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Sheet, tape and foil brand HN70Yu with a high content of nickel and chromium, due to the heat resistance today is quite actively used in various areas of industrial production. Unique properties make it possible to use them for the production of equipment operating in an aggressive environment at elevated temperatures. High content of nickel and chromium and addition of additional alloying components in the charge. Aluminum, barium, iron, manganese, cerium, silicon, etc. determine the high operating and working parameters of finished semi-finished products.
The percentage composition of HN70YU is GOST 5632−72 .
|Al||C||Cu||Fe||Ni||Cr||Mn||Ce||S and P||Si||Ba|
|2.8−3.5||≤0,1||≤0,07||≤1||65−71.2||26−29||≤0.3||≤0,03||≤0.012 and 0.015||≤0.8||≤0,1|
To obtain a high-quality material, the process of smelting of steel ХН70Ю is made using special induction furnace equipment of an open type. Such an alloy can be obtained by remelting the raw material in a special bath using an electric current (electroslag remelting method). The second method, despite the considerable laboriousness, helps to improve the quality of the finished product. In the manufacture of flat products, it is necessary to very accurately observe the temperature conditions of processing from 1150 to 900 ° C (from the beginning to the end of the procedure). Hardening is performed in liquid or air at 1200 ° C.
Sheet, tape and foil brand KhN70Yu are widely in demand by the modern industry from the oil refining complex to the food or chemical industry. The sheet and tape are actual in the production of impellers of gas turbine engines, heat-resistant furnace equipment, foil boxes for carburization, etc. It should be noted that, despite the high heat resistance and heat resistance index, the sheet, tape and foil of grade ХН70Ю are unstable in sulfur and hydrogen sulphide. Given the limitations on weldability, to ensure the reliability and high performance of butt joints, the semi-finished products must be heated to 200 ° C. To remove residual stresses from parts after the end of welding, additional heat treatment is carried out. This chromium-nickel alloy has proved very well in the production of combustion turbine engine parts whose operation is associated with loads in the temperature range from 1100 to 1200 ° C.
BUY AT THE BEST PRICE
The huge assortment and the optimal combination of useful characteristics against the background of a moderate price predetermined the high popularity of products from the alloy ХН70Ю at various sites of the production complex. A wide range of products from chromium-nickel steels presented in our company will not leave you without a choice. High quality workmanship with the availability of quality certificates, favorable delivery conditions will provide maximum comfort when making a deal.