What are the causes of blisters and pore defects after processing the forged flange sealing surface?-Jiangyin Jintong Petrochemical Equipment Co., Ltd

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What are the causes of blisters and pore defects after processing the forged flange sealing surface?

05 Aug,2026

There are pores and slag inclusions inside the forging blank raw material steel ingot, the forging compaction is insufficient, and the defects are exposed after machining and turning the sealing surface;
During the forging heating process, the oxide scale of the steel penetrated into the matrix, the forging was not completely welded, and the finishing surface peeled off to form holes;
The post-forging heat treatment process is abnormal, the internal residual stress is released, resulting in micro-porosity, and blisters appear after grinding.

During the use of high-pressure forged flanges, the bolt fastening parts are prone to deformation and leakage. What are the core reasons?

What are the key differences between forged pipe fittings and seamless rolled pipe fittings in terms of pressure bearing and applicable working conditions?

During the use of high-pressure forged flanges, the bolt fastening parts are prone to deformation and leakage. What are the core reasons?

What are the key differences between forged pipe fittings and seamless rolled pipe fittings in terms of pressure bearing and applicable working conditions?

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