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Battery-assembled compact electric car platform and heat pump-typed cooling/heating system

March 17, 2016 by Leave a Comment

Technology overview: The traditional air conditioning devices for electric cars are comprised of a cooling system that uses refrigerant, ie. vapor compression cycle, and a heating system that uses an electric heater, and it operates these two systems at the same time to maintain an appropriate temperature and comfort inside the car. This product has commercialized a heat pump system for electric car, which uses the existing vapor compression cycle, capable of using the cold spot of refrigerant for cooling use under the condition where outdoor temperature is high, and the hot spot https://korean-machinery.com///inquiryof refrigerant can be used for heating use under the condition where outdoor temperature is low. Traditional heaters that use electricity have thermal efficiency lower than 1 (0.9~0.95), consuming electricity energy more than required quantity of heat. While, the heat pump  system  has COP bigger  than 1 at all times (1.5~4), which helps reduce energy consumption by 30~60% compared to the system that uses an electricity heater to get the equivalent heating performance. In addition, it collects waste heat generated from application components of an electric car, such as inverter and drive motor, with the use of the heat pump system helping improve COP and reduce parasitic power. As a result, we could extend distance per charge by about 21% through power saving of the battery of a system requiring heating source up to 7kW for an electric car, and we have secured technology for domestically designing a heat pump system for electric cars.

Industrialization: With regard to developing a high-performance heat pump system using waste heat for the first time in the world, we have enhanced the endurance for components, at the same time being capable of domestically producing all components except for a refrigerant change valve. In addition, as we have realized power saving required for heating the inner space of a vehicle, compared to other competitor’s performance, with driving distance per charge of an electric car being increased. With this, we could satisfy customers’ requirements for increasing driving distance per charge, and have secured better competitiveness than our competitors, resulting in enhanced productivity. Further, with respect to applying a heat pump system to a vehicle, it was required to run dehumidifying and defrosting operations at the same time to remove moisture and frost on the window to assure a driver’s visibility and automatic temperature variable control operation to control the indoor air conditioning. To realize these, we have implemented integrated control logic of optimized operation satisfying the performance required by an air conditioning system for automobiles by properly combining cooling/heating modes, frost recognition and continuous operation modes. As a result, we have secured an independent technology for domestically designing a high- performance heat pump system.

Untitled-17Problem-solving in industrialization: With respect to developing a high-performance air conditioning system to extend the driving distance of an electric car, we have dramatically extended it by about 21% when running a heating system through COP improvement and power-saving by collecting only waste heat generated from application components, such as an inverter and a drive motor, of an electric car with the use a heat pump system. Then, with respect to extending the operation range of a heat pump system when it is -20℃ outside, a heat pump system tends to have deteriorated performance and endurance as the exterior temperature becomes low, due to the characteristics of refrigerant. Thus, it was not possible to run the system at low temperatures. This technology enables the waste heat generated in the application components suffers heat exchange with the refrigerant of low temperature at the entrance of the compressor, increasing the amount of refrigerant flow, and leading to secure an endurance enabling the system to run at up to -20℃. Finally, with respect to developing control technology enabling continuous operation after recognizing frost generation and ice formation on the outdoor fan, in order to overcome the frost generation and ice formation issues, which are chronic ones of a heat pump system, we have developed a method to recognize frost generation and ice formation in an outdoor fan, leading the refrigerant to the inner circulation cycle mode if frost generation is recognized so that the heat pump can continuously work in the heating mode without having a section of defrost operation.

Technology developer:

Hyundai Kia Motors / +82-80-600-6000 / www.hyundai.com

Hanonsystems Co., Ltd. / +82-42-930-6114 / www.hanonsystems.com

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Polymer new material stone unit panel system

March 17, 2016 by Leave a Comment

Technology overview: Structures that are recently being constructed are often high-rise buildings of various forms, in particular reflecting the trend of luxurious image. According to this construction trend, the external walls of the structures are getting using stones, the representative high quality finishing materials showing outstanding endurance. When using stones as finishing materials for mid-to-high rise buildings, the wet construction https://korean-machinery.com///inquirymethod using mortar is often adopted, which requires longer construction period and has issues like whiteout. To deal with these issues and reduce the weight of stone finishing materials used in high rise buildings, dry construction method, including a setting method, is used, which uses adhesive and connecting hardware for weight lightening. However, stones are heavy objects and raise issues at the connecting part of the structure, and as time goes by, significant pollution tends to occur around masonry joint that connects stone plates, which is harmful to the aesthetics of a building. This technology uses polymer new material for an economic and efficient exterior finishing method for structures, capable of resolving issues of the dry construction method. This technology synthesize stone and steel frames using polymer new material, filling in and synthesizing the polymer new material based on the existing method that connects stones and steel frames with iron goods, resulting in preventing the masonry joint of an external wall from being polluted due to rainfall infiltration, and improving heat insulation property. As it is possible to do manufacture by a large panel system unit, this technology reveals structural stability and outstanding construct ability, above all, and even it is easy to do maintenance after construction.

Industrialization: This technology mainly applies to environment-friendly buildings and the external wall construction of buildings which require a high energy management class, and as it helps shrink the thickness more than the stones used in the existing buildings, it is an economic technology contributing to cutting down on construction cost. Further, we have recently developed and applied steel frames that are optimized enough to saving construction cost, and have introduced a system that helps shrink term of works by streamlining installation processes of the fields. Due to these, Samjistone Co. Ltd., which joined in the development of this technology has achieved field application results worth more than KRW 5 billion since the technology development, and it is expected that it will be able to reach more than KRW 10 billion by 2016. In addition, many overseas project sites other than the existing ones are vigorously applying this technology to their works.

Problem-solving in industrialization: For the existing exterior masonry stone works, similar to this technology, it is essential to do the works on a scaffold or a gondola, which is vulnerable to risks. However, this technology involves producing stones by panel unit and using cranes to install them so that we can do construction works safely than before. As most construction works use equipment, it is possible to do the works with one-third of the manpower used in the existing exterior stone works, which helps lower the rate of human life loss accidents. Moreover, as it does not produce dusts or wastes coming from stones cutting, scrap stones or the pallet of imported stones, we can minimize civil complaints raised around the field, and in particular, this technology is better suitable to a construction field that is located in downtown areas.

Technology developer:

Myongji University’s Industry and Academy Cooperation Agency / +82-31-324-1063 / www.mju.ac.kr

 Keimyung University’s industry and academy cooperation agency / +82-53-580-6708 / www.kmu.ac.kr

Samjistone Co., Ltd./ +82-2-981-0027 / www.samjistone.co.kr / Basf Korea / +82-2-3707-7529 / www.basf.co.kr

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Environment-friendly propeller cavitation performance control technology

March 17, 2016 by Leave a Comment

Technology overview: Identifying the cavitation performance of a real vessel propeller through a model propeller test is critical as it forms the basis of vessel propeller design and technology development. We have developed a three-dimensional ship wake flow reproduction technique and a model propeller cavitation performance test technique, which minimize the effect of Reynolds Number, generated due to difference in velocity of flow, and the relative sizes of a model vessel, used in the model test, and a real vessel.

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We have compared and verified the results of the model test with the results of the real vessel propeller real sea trial run, and found it shows excellence in the generation of a real vessel propeller cavitation, and the expected level of variable pressure and propeller noise. Such foundation technologies apply to mostly commercial vessels, including container ship, LNG carrier,  LPG carrier,  VLCC, and PC. We have gathered credible data on various vessel types. We have secured a technology capable of estimating a vessel body’s effective velocity, which uses the numerical analysis of organic speed generated by a propeller, and the results of total velocity measurement of a propeller, in a large cavitation tunnel. We have developed a numerical analysis technique that helps optimize the load distribution of a propeller and minimize cavitation generation, seeking for improving the efficiency of controlling and propelling a propeller cavitation, based on the aforementioned test techniques. We also have developed a technology for verifying the torque balance of a counter rotating propeller (CRP), a technology for improving propulsion efficiency using a Hub Vortex Control Fin, a technology for reducing the cavitation of a propeller blade and controlling the wake flow of a ship body, which makes use of a Vortex Generator, and a technology for reducing and stabilizing cavitations on a Rudder’s tip and shoe.

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Industrialization: The method of testing a large cavitation tunnel, developed in this project will apply to a model test for propulsor and will be used in the cavitation performance verification of a propeller designed in the basic design stage before constructing a vessel, followed by suggesting the direction of design improvement, based on the results. For example, for a 8800TEU container ship, we designed it having the optimal ratio of the expanded area ratio reduced by 15~20% based on the credible results of the model test, resulting in propelling efficiency improved by about 3~4%, and we were successful in commercialization. Moreover, the numerical analysis technology for optimizing propeller design has been transferred to the participating companies and being in use in designing propellers for export vessels. Currently, the research results of this project are utilized not only in the verification of commercial vessels’ propeller cavitation performance, built by domestic shipbuilders and technology development, but also in the national R&D research projert.

Problem-solving in industrialization: Cavitation, generated in a vessel’s propeller, gives various harms, including reduced propelling force and efficiency of a vessel, generation of variable pressure triggering vibrations in the vessel body, eroded surfaces of propellers and rudders, and radiated noise under the water. As such phenomena are not still fully numerically analyzed around the world, we are applying experimental methods at the same time to verify the technology. When we needed to submit precise test results, we had no option but to use foreign test facilities because we were lack in a large cavitation tunnel. Now, we have domestically secured the related test facilities, performance tests and designing methods, as aforementioned, it is now possible to conduct a credible verification in Korea. The technologies will contribute to improving domestic shipbuilding industry’s competitiveness in receiving orders due to the technological superiority, and will give a foundation to independent technology development.

Technology developer: Korea Research Institute of Ships and Ocean Engineering (KRISO) / +82-42-866-3114 / www.kriso.re.kr

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Next-generation semiconductor wafer level wiring material technology

March 17, 2016 by Leave a Comment

Technology overview: With regard to manufacturing the next-generation high-density semiconductor device, a process that uses Cu substituting the existing AI material has been realized and semiconductor companies of other countries are actively conducting studies on the Cu wiring process. In these circumstances, in the material sector, which is a rear industry, leading companies of other https://korean-machinery.com///inquirycountries are supplying technocratic products to the market to response to the technology. With domestic  ICT industry,  which is a front industry, having good international competitiveness, we need to enhance the domestic material industry’s technology power to create a stable industrial environment in the future, and to maintain our competitiveness. At this time, we have developed technologies for manufacturing  Cu, Ta and Ni-Cr sputtering targets to apply to the next generation semiconductor, through the project. The sputtering target adopts the PVD method and is used in the form of high purity monometal or alloy as raw material for laminating thin-film onto the substrate. As it is used in LCDs, semiconductors and HDD storage devices to form thin-films of IT devices, it conditions not only the properties of a thin film, but also the performance of an IT device as a key raw material. So, it is required to secure a technology for controlling the purity and microtissues of a material, and to apply the technology to the industrial setting. It is also required to optimize these technology elements. With respect to the Cu target, we have developed a textured material having purity 6N, crystal grain sized 10㎛ or less, and 30% or more of <111>//ND; and a target which sputter yield is improved by 39% compared to the existing target. For Ni-Cr target, its average crystal grain is sized between 0.2 and 2.8㎛, and we have developed a target having a sputter yield at the same level to the existing target for common use.

Industrialization: We have industrialized  Cu(>4N5 grade) and Ni-Cr(>2N5 grade) target products since 2011, creating sales amount of KRW 1,200 million and KRW 2,800 million, respectively, until 2014. We have secured some KRW 1 billion of fixed sales every year, and we are now preparing for subsidiary facilities such as a clean room in order to penetrate the semiconductor target market in the future. We have expanded and transferred our factory in 2014 to enhance our competitiveness in terms of size and quality, and making use of the high purity metal dissolution process technology and microtissue controlling technology, developed through the project, we are expanding our business area to other high-value metal product manufacturing.

Problem-solving in industrialization: With respect to Cu (>4N5 grade) and Ni-Cr (>3N5 grade) sputtering targets, developed through technology development, a credibility test by consumer and a field optimization stage were carried out, and we are now in the delivery stage. For Cu (>6N grade) sputtering target, which is a product of semiconductor class, as the requirements for credibility rather than price has priority, it is required to grow material companies in terms of quality and quantity in order to substitute the existing suppliers, i.e. foreign leading companies.

Technology developer: HanKook Vacuum Metallurgy Co., Ltd. / +82-31-433-7477 / www.hvm.co.kr

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Ultralight aluminum heat-shield manufacturing technology for automobile engines with its heat radiation and vibration endurance improved by 10%

March 17, 2016 by Leave a Comment

Technology overview: Heat-Shield for automobile engines protects parts vulnerable to the heat generated around the engine by shutting off high-temperature heat and noise that are radiated from the exhaust system during the engine stroke, and improves the https://korean-machinery.com///inquiryinner environment and ride comfort of a vehicle. Technology reports, produced by overseas leading companies in the countries such as Germany and Japan, suggested that a heat-shield that uses aluminum plate can shut off heat and reduce vibrations, as well as can reduce noise greatly. Thus, many domestic companies tried to domestically produce it, but it was hard to produce a copied one because of its complex shapes, and they also had limitations in their original shapes, resulting in creating no outcome with regard to the domestic production. Currently, domestic technology is on the level of applying an embossing shape to a single aluminum plate, and the aluminum composite panel heat-shields having good performance had been all imported from overseas companies. Amid the recent improvement of automobile engine performance and efficiency, the roles played by the heat-shield and specifications for required performance are getting enhanced. We have developed a lightweight aluminum heat-shield made of aluminum materials having a specific gravity of 30% level and more than three times of thermal conductivity compared to the traditional steel materials. To implement not only light weight, but also stiffness, heat insulation, vibration control and lower noise properties at the same time, we have developed a heat-shield manufacturing technology that has a structure of stacking aluminum plates in multiple layers. As such, we have secured a manufacturing technology for parts and materials, which can contribute to the future eco-friendly green growth. We have domestically developed an aluminum heat-shield manufacturing technology having good performance compared to overseas advanced parts, through R&Ds, which satisfies the intent of the parts and materials technology development enterprise, enhances our country’s competitiveness, and substitutes imported ones.

Industrialization: We have secured our own composite panel sectional shape, applicable to the heat-shields for automobile engines, and domestically developed a composite panel manufacture technology of sandwich structure, holding a process patent capable of producing the pattern shape of a specific model, with the patents pending in overseas countries such as China and India. We have developed a device capable of simultaneously forming plates of sandwich structure, reducing investment and production costs due to reduced processes. Based on the patent holding, production cost reduction, securing a peculiar model and our own aluminum composite panel manufacturing technology, we are carrying out a practical endurance assessment to apply the technology to mass production, in collaboration with a automotive company, to domestically produce aluminum heat-shield parts that have been imported. In addition, we have provided a samples to carry out an assessment for mass production application, at a demand from an Indian automobile company, and a practical performance assessment is being carried out.

Problem-solving in industrialization: To conduct a heat radiation assessment, a key function of the heat-shield, we tried to commission a standardized testing institute to conduct the tests. As there were no efficiency evaluation standards nor testing devices for heat-shield parts, we manufactured a testing facility ourselves and performed verifications and calibrations, establishing an efficiency evaluation system, and based on this. In addition, we manufactured a sample of the practical application model after conducting a plate forming interpretation and physical modeling test, performing a practical evaluation according to the customer company’s standard.

Technology developer: Saehan Industry Co., Ltd. / +82-31-499-3355 / www.saehani.com  IAE / +82-31-330-7516 / www.iae.re.kr

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Technology development of application & integrated control for the commercialization of the 4WD electric tractor with 35hp

March 17, 2016 by Leave a Comment

Technology overview: Responding to strengthened regulations by advanced countries for exhaust https://korean-machinery.com///inquirygas and fossil fuel depletion, the development of an electrical-powered tractor that uses conversion from fossil fuel to electric energy as power source was conducted as a top priority in order to remove trade barriers caused by regulation of exhaust gas of advanced countries and to pioneer a new market. Through a project for development of components and materials, the purpose was to develop pure electric system that can replace diesel engines, and the pure, genuine, electric tractor was the world’s first product of its kind. In order to realize the same performance as the existing diesel tractor, its weight was reduced to be lightweight, and construction technology for the optimal layout of components for creating the maximum traction power was developed. In addition, the structure was built so that battery, a heavy material, can be easily detached and attached, with a patent application completed.

For vehicle simulation through ASM and Carsim software, tractor modeling was developed so that simulation can be performed through defining electrical property parameters of core electronics such as motor, battery, and inverter and parameters for driving environment such as condition of packaging. Unlike electric cars, agricultural tractors perform high-load works consistently under poor conditions; therefore, with consideration of environmental conditions such as temperature and waterproofing, motor, inverter, battery, BMS system, transmission, and hydraulic system were developed to be suitable for agricultural use.

In order to increase use time by one charge, the research on improvement of energy efficiency was conducted through development of vehicle integrated control logic and echologic linked to an integrated controller. In particular, a dual-motor system was implemented in order to perform driving and jobs, and development of optimally integrated control logic was completed through the research for maximizing energy efficiency when two motors simultaneously perform jobs and driving.

Industrialization: Currently, a market for urban tractor attached with farm working machinery is being developed so that it can be used in amusement park, arboretum, and public offices that are sensitive to exhaust gas and noise. A market was opened through a target strategy focusing on closed workspace such as vinyl greenhouse and areas where agricultural products that are sensitive to exhaust gas are processed, such as orchards, and the business can be expanded to construction and transfer of indoor distribution.

Problem-solving in industrialization: Comparing the cost of lithium battery and use time with those of diesel tractor, prejudice about a tractor being only used for agricultural purposes, etc.

Technology developer:

Daedong Industrial Co., Ltd. / +82-53-610-3000 / www.daedong.co.kr

VCTech Co., Ltd. / +82-31-477-5050 / www.vctech.co.kr

Motion Control & Systems Co., Ltd. / +82-32-621-3322 / www.mcsys.co.kr

PNE Solution  Co., Ltd. / +82-31-343-1221 / www.pnesolution.com

Daedong Gear Co., Ltd. / +82-55-851-2448 / www.daedonggear.com

Hydrotech Co., Ltd. / +82-53-593-8468 / www.hydrotech.kr

University of Ulsan / +82-52-259-1287 / www.ulsan.ac.kr

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Cross-roller rotation bearing that has rotation precision of 5㎛(outer rim) 3㎛(inner rim), endurance time with more than one million rotations, and diameter of 150nm and 250nm

March 17, 2016 by Leave a Comment

Technology overview: Heavy-duty cross-roller rotation bearings are mainly composed of outer rim, inner rim, roller, retainer and seal. Outer rim and inner rim are made with bearing steel (SUJ2) with high abrasion resistance and rigidity. Since rotation is conducted by roller as a medium, low friction resistance, stable rotary motion and high rotation precision can be realized. For smooth circulation of roller, skew (misalignment of roller) is prevented by space retainer, and side seal is attached in order to block penetration of external, foreign substances. The developed product selects a structure equipped with space retainer, which reduces noises in rotary movement and enables precise rotation.

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Industrialization: There has been dramatic increase of demand in the field of machine tool and industrial automation such as turning joint area of robot, rotation table in machining center, precision rotation stage, and medical equipment. In addition, the export to Southeast Asia, Europe and the USA is expected to grow. Therefore, more investments need to be recruited to maximize production and train technicians, thereby improving competitiveness through high-quality, rapid delivery, and cost reduction.

Problem-solving in industrialization: Domestic production of heavyweight cross roller circular bearing is still in early stage, and in fact, products made by Japan THK have dominated the Korean market. Technology in cross roller guide by MID, which can be considered as directly related technology, is the most advanced in Korea, and development of gonio cross roller guide was completed as the first in Korea and is now being marketed. Currently, MID mostly manufactures precision guide; however, endurance time and productivity have been improved to be competitive against advanced, foreign companies. In addition, test equipment for self-evaluation of durability have been established, authorized by national certification organization. Based on this, industrialization has become successful through mass- production.

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Technology developer: MID / +82-31-998-9581 / www.midcop.co.kr

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Fine pulverization technique utilizing jet milling technology for production of aluminum powder

March 17, 2016 by Leave a Comment

Technology overview: https://korean-machinery.com///inquiryA pulverization technique preventing stickiness and clotting in high speed pulverization of aluminum scrap that is ductile and has low melting point was developed. Localization of the related technology was made possible due to development of fine pulverization technique of aluminum. Jet milling technology cannot be leaked outside. Developed technology was applied with expansion to Flexible  PCB board that has similar properties with aluminum among wastes of electrical and electronic equipment. For aluminum scrap that contains more than 98% aluminum, the technology overcame ductility and low melting point, and fine pulverization technique without the risk of explosion of aluminum powder was developed while removing various foreign substances included in aluminum scrap, thereby developing manufacturing technique of high value-added aluminum fine powder with more than 98% of aluminum and below 0.4% impurities.

Untitled-7Industrialization: Environmental-friendly method through re-utilization of aluminum wastes and reduction of carbon emission was developed. Aluminum granule (99%) is used as a material for high-quality ferroalloy (ferromolybdenum, ferrovanadium), and the size of the global market is about KRW 500 billion. Therefore, the balance of trade would be achieved with exports around the world. Essential technology and recycling facilities will be exported.

Problem-solving in industrialization: To overcome ductility, ultra-high speed pulverization (higher than 3500rpm) is utilized to pulverize ductile metals. For milling foreign substances in the surface, the gap in still blade and rotator blade is controlled from 8mm to 1mm in stages to provide crush effect in cutting process simultaneously, thereby polishing on the surface. Since the gap in still blade and rotator blade is at least 1mm, flexible plastic that is not sorted out by magnets will not be cut and extracted out as large particle. For overcoming low melting point, the flow of pulverized materials inside high-speed milling machine is controlled through air flow made by strong turbo impeller, creating natural pneumatic system. Through a 25RW cooler (water cooling jacket in pulverized space of pulverization machine) and sensor for indicating temperature of discharged air in the indicator, the input amount of materials can be controlled, thereby setting the temperature below 80˚C (controller).

Technology developer: JMTECH Co., Ltd. / +82-31-997-4437 / www.jmtechkorea.com

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Lightweight aluminum bumper system against the full-speed crash (pedestrian~high speed clash)

March 17, 2016 by Leave a Comment

Technology overview: An ultralight bumper system was developed to effectively protect pedestrians from head-on collision with vehicles. To ensure the safety of pedestrians, a bumper-mounted lower https://korean-machinery.com///inquirystiffener was developed in an attempt to not only reduce pedestrians’ leg injuries in a crash accident but also prevent the damage of cooling systems caused by lower stiffener in a low speed crash. In addition, plate-type lower stiffener, which can be used as a vehicle’s undercover, was developed and helped improve the design degree of freedom for vehicles. Aluminum is in general widely used for bumpers due to its lightweight element, and considering the characteristics of the element, it had facture in a crash, thus leading to lower crash performance. In particular, a crash box was installed in a bumper (back beam) to prevent the fracture of the bumper because factures between bumper back beam and the crush box often occurred. Furthermore, to minimize the weight of back beam, the crash pattern was analyzed ranging from low speed to high speed, and the optimal cross-section of back beam was made.

Industrialization: The bumper mounted lower stiffener was developed by using complex materials in the early stage of this project, but now it is made of various materials such as steel and aluminum. Along with plate-type stiffener, this bumper mounted lower stiffener is used for various vehicles makers such as Hyundai, Kia and others, contributing to higher pedestrian safety and lower repairing expenses. The lightweight aluminum bumper is increasingly in large demand for purposes of the recent improvement in fuel efficiency.

Untitled-6.jpgProblem-solving in industrialization: Plate-type lower stiffener was susceptible to deformation in a crash and was hard to obtain the strength of the car body in the installed part. Accordingly, foam was added to improve the stiffness of stiffener and the number of mounting in the car body was added; this resulted in the deformation of the car body and higher repair costs in a low-speed crash. To solve the problem, stiffener can be separated under more than a certain amount of crash impact.

Technology developer: Hyundai Motor Company /+82-31-368-1252 / www.hyundai.com

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Non-coating metallic bipolar plate for polymer electrolyte membrane fuel cell

March 17, 2016 by Leave a Comment

Technology overview: Fuel cell bipolar plate is a component that plays significant roles in supplying gases for the reaction of unit cells, and in collecting the electricity within fuel https://korean-machinery.com///inquirycell stacks with a layer of dozens to hundreds of unit cells. In the early stage of the development of fuel cell, graphite bipolar plates were used. However, problems with graphite plates include brittleness and the cost. So, metal bipolar plates have gained attention for cheap expenses and the outstanding formability for multiple applications. However, because metals are subject to corrosion and lower conductivity, a coating must be applied to provide a protective layer with high corrosion resistance. This makes the bipolar plate process more complicated and more expensive. To solve such problems, POSCO developed stainless steel Pos 470FC that could make it possible to produce non-coating metal bipolar plate for polymer electrolyte membrane fuel cell (PEMFC). This technology is composed of two technologies: one is to develop materials with high corrosion resistance in corrosive environments through excellent corrosion-resistant stainless alloy; the other is to produce materials with excellent conductivity while maintaining the lower conductivity of the outer layer to the point of having higher corrosion resistance. In addition, the company employed sheet forming technology such as stamping to develop the process technology for the component production of fuel cell bipolar plates. By verifying the long-term durability of fuel cells (25,000 hours for building, 5,700 hours for transportation), it established a base technology that could innovatively reduce manufacturing costs of bipolar plates and accelerate the commercialization of fuel cells.

Untitled-5.jpgIndustrialization: In 2012, POSCO employed non-coating metal bipolar plate using structural steel in cooperation with Doosan Fuel Cell (formerly Fuel Cell Power) for the first time in the world, thus succeeding in producing 1kW stack and obtaining the certificate of new & renewable energy system from the Korea Energy Management  Corporation. In particular, coupled with the development roadmap for eco-friendly vehicles of global automobile companies, the company is in cooperation with bipolar plates for fuel cell vehicles. To promote the strategic items of core materials and components for exports, it is developing a commercialized technology that corresponds to the mass production. In particular, the industrialization of forming parts as well as materials is underway by packaging material technology with fuel cell bipolar plate applied to ultra-thin plate, which was jointly developed with small & medium-sized enterprises. The core material & parts of fuel cell is expected to develop as an export item.

Problem-solving in industrialization: In fuel cell operating environments, POSCO achieved world-class high corrosion resistance and conductivity without the conventional coating process, while the company found it difficult to form a complicated shape of bipolar plate made of ultra-thin plate of 0.1 mm in thickness compared with general stainless steel. Based on the close collaboration with small & medium-sized enterprises, universities, and research institutes, it obtained materials forming technology in a short time by taking systematic approaches such as optimal Channel design, forming interpretation, and forming test. In this process, it discovered many small and medium-sized companies with excellent competency. Based on such efforts, POSCO laid the foundation for a technical base that could provide not only materials for fuel cell bipolar plate but also its application technology and in turn, successfully achieving industrialization.

Technology developer: POSCO / +82-54-220-9849 / www.posco.com

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