2017年2月21日星期二

Vacuum furnace characteristics

Vacuum furnace characteristics


Two professional vacuum heat treatment of vacuum technology and heat treatment technology that combines an integrated, refers to the whole and part of heat treatment process in a vacuum. Our country could be divided into low, medium and high vacuum and high vacuum. At present most of the vacuum heat treatment furnace work vacuum degree in 1.33 ~ 1.33 x 10 ˉ sup3; Pa.
Industrial vacuum hot water boiler from Zurich polytechnic university in 1972 invented the basic principles of vacuum boiler. Founded in 1974 by the Japanese tanokuma polytechnic institute is developed on the basis of principle of the vacuum hot water boiler, and won the invention patent, in 1982, South Korea Fuji corporation will vacuum hot water boiler, boiler to market, become the brand of the first commercial use vacuum boiler:
Next, with the technology quickly popular in European and American countries, become a landmark greenhouse culture of new products.
The late 1980 s, Fuji, formal mass production vacuum hot water boiler, boiler, products not only domestic gained popularity in Korea, but also sells in distant markets, including Russia, China, southeast Asia, the americas, Europe and other more than 40 countries and regions.

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