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We are looking for companies that want a joint venture with us. NAGAISEIKI Co.,Ltd is a turbine blade manufacturer in Takasaki, established in 1955. It takes only 50 min. from Tokyo to Takasaki by Shinkansen superexpress train. Our company employs about 30 workers. Our mainstay products are turbine blades for nuclear power plants and thermal power plants. Turbine blades are important parts which convert energy in the form of high temperature, high pressure steam or gas, for example, into rotational motion in order to generate electricity. Backed by our excellent technology, we specialize in the manufacture of small and medium blades which are required to be of particularly high quality and accuracy. We supply our products to Japanese main heavy electrical equipment manufacturers, and they are currently in use in nuclear power plants and thermal power plants throughout the world. In recent years, we have been utilizing our machining technology developed through the manufacturer of our turbine blades in a steadily increasing range of applications including blades of turbochargers for raising the efficiency of marine engines, turbine blades for turbine ships, and blades of blowers used for blast furnaces. Turbine blades are important feather-shaped components that convert steam and gas energy into rotational movement to generate electric energy. Because the blades rotate at close to the speed of sound while receiving steam at high pressures and high temperatures of over 800 degrees centigrade, they must be extremely strong and precise. Furthermore, products must be cut and shaped from all 360 degrees to produce complex three-dimensional curves. At NAGAISEIKI, we have accumulated technology in blade machining that has led the industry for over half a century. Today, we have established machining technologies to cut and polish three-dimensional curves using special steels, which are rigid and difficult to grind, to an accuracy of 1/100 mm. High-precision machining of the Nickel-base superalloy "Inconel" is an example of our achievements. We are also actively engaged in improving the quality demanded for blade machining which greatly affects the power generation efficiency. This was the reason why we adopted a 3-dimensionsal coordinate measuring instrument manufactured by Carl Zeiss. We have established a setup for accurately checking whether or not the machined product falls within the tolerances demanded by the customer. Another feature of NAGAISEIKI is that the one engineer who is in charge of machining incorporates high quality into the manufacturing process. In blade machining which demands high level cutting and grinding technology, the specifications cannot be met by merely relying on the machining ability of the machining center. We have added "skill" which is based on human sensibility, and by making concerted efforts we have realized high quality products. We hope to cooporate with more clients in the future and welcome all potential buyers to contact us.

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Contact Details

Contact person:Toshihisa Nagai




Street address: 561-23, Kamitoyookamachi



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