BLOG MAGAZINE OF KOREAN MACHINERY AND AUTOMOTIVE
This vaporizer, made of stainless steel, is designed/manufactured ranging from the low pressure to high pressure (350 bar) to suit the system. It is used for natural gas fuel engine systems and regasification systems for vaporizing the liquefied natural gas, thereby playing a vital role in supplying natural gas, and they are mainly used in LNG vessels and both offshore and onshore plants.
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MYTEC Co. Ltd. is a leading heat exchanger solution provider that designs, manufactures, supplies, and exports heat exchangers for shipbuilding, marine construction, power generation, and nuclear power plants. Since its establishment in August 2003, MYTEC has been registered in all shipyards in Korea and has been producing and providing high-quality products.
MYTEC’s product line consists of heat exchangers, pressure vessels, industrial structures, and modules and packages. 
The heat exchanger is composed of a shell and tube heat exchanger, a plate heat exchanger, and a fin-type heat exchanger, etc. The pressure vessel is composed of a pressure vessel, tank, a pulsation damper, etc. MYTEC’s customized heat exchangers are all designed, manufactured, and supplied through optimized design technology to the specifications required by customers.
In particular, MYTEC designs and exports its specialized heat exchangers as follows in the fuel system part and the supply system part of eco-friendly gas energy (LNG):
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Dongil Green Sys Co., Ltd. has been manufacturing TMS for atmosphere, TMS for water quality, and Gold mates, with related technical services since its establishment. With accumulated know-how, Dongil Green Sys performs consulting services targeting integrated overall environment systems. This company aims at increasing its presence in markets by consistently upgrading its competitiveness focused on its expert technological background.
TMS for Atmosphere
This product is a monitoring system for integrally monitoring the atmosphere designed for increasingly complicated atmosphere environment yearly, including pollution and water conditions. This is an automatic monitoring system and employs latest technology so it performs high-precision automatic monitoring operations.
It is regularly upgraded for advanced functions including full automatic sensitivity correction function, compounding function for standard gas, checking function for self-movement, etc., 
and this TMS system thus carries out highly reliable analyses for monitoring data.
The monitored data can be delivered through on-line, telemeter, etc. and processes information swiftly, daily and monthly. This TMS can be widely used including installation on vehicles exclusive for moving observation and used monitoring of indoor air quality.
TMS for Water Quality
This TMS is a system available for all-time ceaseless monitoring of anytime variable polluted status, caused by weather conditions including eutrophication in environmental zones (river, lakes, etc.), and pollution matter in water sources.
This TMS integrally controls monitoring of sources of pollution, supervision of discharging of waste water and thus ensures high reliable monitoring. And it is designed to carry out long-time of ceaseless and safe monitoring with competitive functions including automatic cleaning. This product can thus be widely utilized.
Gold Mate
The produced crude liquid processed by this product was certified by the American FDA and Japanese Department of Health and Human Services, as a substance harmless to the human body. The produced crude liquid is easily decomposed by sunlight and general air so that it has no harmful effects on the 
environment.
Moreover, it has strong sterilizing power against influenza, viruses, bacteria, fungi, and food poisoning bacteria so that common home can use it for disinfection and deodorization. As it does not emit any toxic substance and pungent smell at all, it does not affect the original taste of certain food. This product thus deserves to be called eco-friendly manufacturing equipment for hypochlorite water to be used in general water.
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NAOTECH Co., Ltd. was established in 2000 in order to develop, manufacture, and sell special paints. The major products include water repellent-coated wiper blades, special paints, and products for vehicles maintenance. For supplying products customized to meet customers’ needs, NAOTECH produces all of its products according to order.
For special paints, this company provides technical assistance for the entire process ranging from selection of products to coating, and thus helping clients in need of technology assistance.
NAOTECH sold its water repellent wiper to global companies in the United States, Japan, Canada, Europe, and South Korea. This was the first developed water-repellent wiper in the world and the company holds patents effective in five countries. And also it holds a number of patents in Korea. In an effort to ensure the quality of the products it produces, this company seeks to receive ISO certification from TUV, which is known as a strict certifier in quality specification.
NAOTECH’s water repellent-coated wiper blade reproduces high water-repellency. It boasts high-durability with guarantee of 200,000 times of use (about one year). This realizes more than 95 degrees contact angle of water drop (other products have less than 80 degrees.)
Some competitive technologies such as hydrophobic nano projections utilize the effects of lotus leaves, and surface treatment technology of nano-thin film coating is applied to this product, so moisture on an automobile’s windscreen can be swiftly removed.
By using an oligome (a kind of silicon and fluorine) and a nano carbon particle, this product overcame the flaws of the existing hydrophobic water repellency and obtained more than 95 degrees of contact angle of water repellency. This product thus significantly improved capability in terms of high water-repellency, flexibility, visibility, light penetrability, high water-repellency, and water-repellent endurance.
The high water-repellency wiping technology is a biological simulation technology performing an effect of lotus leaf. The basic factor of this technology is how to realize the hydrophobic nano projections and air pocket structure.
The effect of lotus leaf supports water drops like solid objects by numerous times of hydrophobic nano projections, and therefore the surface of the front door of automobiles is not wet with the rolling occurrence of water drops like a ball. Even in rainy situations, stains of dirty water are not spotted at all. Furthermore, the removal of the dust in the surface of front doors, foreign substances, and grunge is possible. Thus, the super-hydrophobic self-washing function, differentiated from the performance of the existing hydrophobic water repellency, is ensured.
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Currently, this company exports its pump units mainly to Japanese Hitachi Toshiba, Taiwanese CHEM.
The company delivers its own brand of pump units, separately manufactured by discharge flux, to many countries worldwide.
Composed of radial piston structure, this pump unit operates by a series of previous operations including cylinder block’s rotation, and piston head’s operation.
This pump has no air charging structure composed of relief valve, and stop valve. This therefore can be called a pump unit that helps increase customers’ satisfaction, with no specific problems in quality.
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Until now, Korean companies have been importing piston seals, an essential component of piston accumulators for high voltage circuit breakers, from foreign markets. The reason is that there are some problems regarding durability, quality, and high/low temperature.
KUMAHYDPOWER CO., LTD. without relying on importing has successfully localized a new-concept piston accumulator made by designing two ribs into one rib that could be manufactured locally. This company solved the delivery matter and lowered high importing prices, thus increasing its global competitiveness.
KUMAHYDPOWER simplified the complex structure of the existing gas valves and it therefore improved its price competitiveness. A series of these flows led to the strengthening of local technology level. Given that many local companies engaged in this area still suffer from difficulties in making the complex structure of piston accumulators manufactured for high voltage circuit breakers for securing durability and safety, KUMAHYDPOWER recently released a more simplified structure of piston accumulator through tests for obtaining of reliability and a series of reviews. The option sale for this product is available depending on customers’ demands.
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DAK Korea Co., Ltd., as a company specializing in steel-material processing, has been professionally engaged in manufacturing of electrode terminals for secondary batteries.
DAK Korea started in dealing with trade business exclusive for materials and parts for secondary batteries, and then started engaging in processing of electrode terminal materials in 2011. In 2015, DAK Korea became a member of Pooongsan Group as an affiliate.
Currently DAK Korea mainly manufactures metal surface treatment materials for electrode terminals for secondary batteries, PP films for electrode terminals for secondary batteries, and electrode terminals for secondary batteries.
DAK Korea has the world’s first succeeded in applying Ni electroless plating of the cathodic electrode terminal for pouch-type secondary battery and in mass-production using the non-cr surface treatment method.
Thanks to such noteworthy achievements, DAK Korea has been recording yearly more than 150 percent of sales growth. DAK Korea is capable of producing products by establishing lines for electrolyzation/ electroless plating and surface treatment, and thereby meeting the quality demanded by customers.
Currently DAK Korea’s products are being applied to EV and ESS products of global domestic and foreign battery makers. DAK Korea holds professional qualifications for production of electrode terminals for secondary batteries and initiated joint development of various products with global top-rank companies.
DAK Korea mainly manufactures metal surface treatment materials for electrode terminals for secondary batteries, PP films for electrode terminals for secondary batteries, and electrode terminals for secondary batteries.
Now there is a challenge over how to expand its global presence by aggressively pioneering global markets with its advanced products such as metal surface treatment materials for electrode terminals for secondary batteries, PP films for electrode terminals for secondary batteries, and electrode terminals for secondary batteries.
DAK Korea holds such highly competitive basic technologies as processing technology of metal materials for electrode terminals, manufacturing technology of PP film, and manufacturing technology of electrode terminals.
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Jungwoo Motor developed smaller and lighter motors with aluminum for the first time in Korea in line with a trend where motors are beco
ming smaller and lighter and, feature nicer designs. Jungwoo Motor developed a premium (IE3) class motors.
Jungwoo Motor is active in developing new markets while participating in major overseas exhibitions regularly to make forays into overseas markets by expanding beyond the Korean market.
Jungwoo Motor is aiming at developing a customized motor market that can meet the various needs of customers rather than standard motors in which large companies are already engaged. CEO Kim Shin-ho explained the advantages of customized motors, saying that they can be tailored to customers’ needs by taking their needs into consideration.
Based on steady technological development, Jungwoo Motor developed a hoist induction motor for traction with a low malfunction rate by utilizing a small temperature rise. Moreover, a transverse hoist induction motor is easy to install even in small places, thanks to a built-in brake. Also, an induction motor for air conditioners with vacuum decreased by a dustproof device and a fan motor is a more economical than those of other products by adopting high-occupancy coils of stators. In addition, the company supports customized production according to usage and facilities
Jungwoo Motor is receiving positive responses about its products from Europe and Japan. The company is confident about the competitiveness of its products, because customized motors were more than twice as expensive as general motors due to the characteristics of the market.
Jungwoo Motor, which recently moved into a new 1,500-pyeong office building, is devoting itself to product research and development based on expanded production facilities, and doing everything it can do to manage quality by systemizing all processes from design to production, inspection, and post management.
Until now, the company has developed various types of industrial motors such as three-phase motors, single-phase motors, hydraulic motors, and explosion-proof motors.
A spokesperson for the company remarked, “We are enhancing our customers’ competitiveness with state-of-the-art industrial motors through technological innovation in the industry, which is becoming more advanced and sophisticated. We are prepared to go to any lengths to become a leader in the motor industry with perfect quality and stability.”
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Dotech Inc. specializes in manufacturing controllers for the field of environment measurement and refrigerating and air-conditioning and stands out in the energy-saving solution market starting with the industrial air compressor energy-saving controller VSD+. The inverter controlling type that minutely controls the number of rotations of the compressor motor with a frequency is one of the qualified energy-saving technologies that are being rapidly introduced to home appliances.
Dotech’s VSD+ is a device consuming the most electricity in the general manufacturing facility. The key point of the high efficiency air compressor is the compressor control applying the inverter. It is a qualified energy-saving technology with rapidly increasing usage in the air compressor field as well as the refrigerating and air-conditioning field.
This controller can save power consumption significantly by properly adjusting the number of rotations of the motor of the air compressor suitable for the usage of compressed air by controlling the inverter. The VSD+ series is the outer mounted controller maximizing energy efficiency by changing the control type (Y-∆) to the inverter control oriented VSD (Variable Speed Control) type by installing on the general industrial air compressor. Because most existing air compressors cannot control the speed of the internal motor, it cannot avoid unnecessary energy consumption as it is operating at almost 100% output regardless of the usage of air to maintain the mobility stand-by status.
On the other hand, if applying the VSD+, the device’s operation efficiency can be increased 
significantly by finely controlling the number of rotations of the compressor according to the usage of air in real-time. In particular, for the fields where no-load operating time is long or load and no-load operating is working frequently in turn, up to energy can be saved up to 30~40%.
Calculating the annual electricity rate for the case of operating the 100-horsepower air compressor for 8,000 hours after installing the VSD+, approximately 19.7 million won and 19,008 ton CO2 (based on 75kW, load factor 60%, electricity charge 120 won) can be saved compared to pre-installation. It can succeed in killing many birds with one stone, including reduction of electricity charges, extension of life of major parts, reduction of CO2, etc., by removing unnecessary operation of the device. Under ordinary circumstances, the installation fee can be recovered in 1~2 years with energy-saving costs.
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Jalman Precision’s cam followers can be effectively applied to static loads and heavy loads at low and middle high speed. Most of the elements such as shafts, rollers, needles and thrust washers are made of carbon chromium bearing steel.
The NA 49 and NKI series are basic bearings assembled with outer rings, cages with needle rollers and separable inner rings. These bearings can have heavy loads because the friction figure is much higher than ball bearings and can be subjected to high-speed rotations depending on the loads, because a cage assembly prevents friction between all of the needle rollers.
Furthermore, JMC bearings are suitable for many kinds of machines such as automatic machinery, cam working assembly, specialized machinery, transmissions for vehicles, printing machinery, air-pumps, electric clutches, hydraulic machines, etc.
The group of engineers at Jalman Precision specializes in bearings providing customers with solutions based on self-developed systems designed for quality improvement, discover new items, minimize defective products, and monitor in real time any quality abnormalities in order to satisfy the ever-varying and selective demands of customers.
The company provides services via a network in around 30 countries – playing a key role in the development of the machinery industry through environmentally friendly management and corporate philanthropic activities.
The company’s CEO Park Kyung-yoon commented, “Even though our global presence is not great, we retain our strong confidence. In fact, we are delivering our competitive products to more than 30 nations including those in Europe, the Middle East, Australasia, and Asia, as well as North, Central, and South America. Thus, we are steadily elevating our global brand awareness in global markets through such noticeable performance.”
Established in 1974, Jalman Precision has consistently made its advanced products such as needle roller bearings, rod ends, spherical plains, ball joints, LM stroke utilizing its self-developed technology. The company continues to produce rare kinds of bearings with competitiveness in terms of price, quality, design, durability, etc. To meet the demanding requirements from its valued clients in global markets, the firm is fully equipped with such arrangements as upgraded facilities and know-how.
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