The technology of vacuum high – pressure gas quenching

Current vacuum high-pressure gas cooling quenching technology development faster, a negative pressure on pressing (< 1 x 105 pa) air-cooled high flow rate, pressure (1 x 105 ~ 4 x 105 pa) air cooled and high pressure (5 x 105 ~ 10 x 105 pa) air cooled, ultra-high pressure (10 x 20 to 105 x 105 pa) air cooled and other new technology, not only greatly advances the ability of vacuum cooling quenching, and the workpiece surface after quenching brightness is good, small deformation, and high efficiency, energy saving, no pollution and other advantages.

Is the purpose of the vacuum and high pressure gas cooling quenching material quenching and tempering, stainless steel and special alloy solid solution and aging, ion carburizing and carbonitriding, and vacuum sintering, cooling and quenching after soldering.

When quenching with 6 x 105Pa high pressure nitrogen, the cooling load can only be loose, and the high speed steel (W6Mo5Cr4V2) can quench to 70 ~ 100mm, and the high alloy heat as die steel (such as 4Cr5MoSiV) can reach 25 ~ 100mm.

When quenching with 10x105pa high pressure nitrogen, the cooling load can be intensive, and the load density is about 30% ~ 4O % when cooling with 6 x 105Pa.

The cooling load is dense and can be tied together with 20 x 105Pa superhigh pressure nitrogen or helium gas and nitrogen mixture cooling quenching. Its density is 6 x 105 pa nitrogen cooling progress 80% ~ 150%, can be cooled all the high speed steel, high alloy steel, hot work die steel and Cr13 % more chrome steel and alloy oil quenching steel, such as large size of the 9 mn2v steel.

The cooling capacity of dual – chamber air-cooled quenching furnace with separate cooling chamber is superior to that of the same type of single chamber furnace. The cooling effect of 2 x 105Pa nitrogen cooling dual chamber furnace is proportional to the 4 x 105Pa single chamber furnace. But running the money, maintenance of low cost.