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Current location: Precision pipe factory > 45 mm precision tube >
Precision tube in stock
Precision tube in stock
Source: youtube2d.com Release date: 10:11:18, March 18, 2019 Number of hits:

 Precision tube in stock

product texture of material Specifications Place of Origin
45# Precision tube product 45# 48*4.5 Shandong
45# Precision tube 45# 51*3 Shandong
45# Precision tube 45# 27*4 Shandong
45# Precision tube 45# 180*10 Shandong
45# Precision tube 45# 159*8 Shandong
45# Precision tube 45# 559*25 Shandong

In the heat treatment process of 45 ? precision steel pipe, the surface of workpiece is easy to be deteriorated by oil quenching. In addition, the adhesion of carbon black and oil on the surface is unfavorable to simplify the heat treatment process. The development of vacuum quenching technology mainly lies in the development of air-cooled quenching furnace with excellent performance and single working position. The above-mentioned double chamber furnace can also be used for gas quenching (jet cooling in the front chamber), but the double position operation makes it difficult to load the furnace in large quantities, and it is easy to cause workpiece deformation or change workpiece orientation to increase quenching deformation during high temperature movement.
In the heat treatment process of 45 ? precision steel pipe, the single position gas-cooled quenching furnace is jet cooled in the heating room after the completion of heating and insulation. The cooling rate of gas cooling is not as fast as that of oil cooling, and it is also lower than that of isothermal and step quenching in traditional quenching method. Therefore, increasing the pressure of the spray chamber, increasing the flow rate, and using inert gases helium and hydrogen, whose molar mass is smaller than nitrogen and argon, are the mainstream of vacuum quenching technology.

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