2-201,Fangda Tech Park ,No.266 Tianshan Street, Shijiazhuang

City,Hebei Province, China


Hebei Yunpeng Machinery is a leading enterprise

whose metal parts and duct fittings production.


COPYRIGHT © 2018 Hebei Yunpeng Machinery Co., Ltd.
Quality inspection of Pressed ventilation elbow
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Quality inspection of Pressed ventilation elbow

Pressed ventilation elbowQuality inspection:

1. The Pressed ventilation elbow shall be inspected according to the items and requirements of the corresponding skill file rules;

2. When the mechanical properties of the Pressed ventilation elbow are unqualified, the heat treatment can be repeated, but the number of repeated quenching or solid solution generally does not exceed two times. Supplementary tempering of workpieces does not count as reprocessing;

Pressed ventilation elbow

3, Quenching state or Pressed ventilation elbow after low temperature tempering, preheating, annealing or high temperature tempering should be carried out before repeated quenching;

4. The original heat treatment records should be properly kept for inspection.

Pressed ventilation elbowFinishing:

1. According to the requirements of the Pressed ventilation elbow and the surface condition, use alkali washing, water-soluble cleaning agent, chlorine solvent sandblasting, shot peening and other methods to clean up;

2, Pressed ventilation elbow generally does not use pickling method for finishing.