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

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

05 Aug,2026

The forging ratio is insufficient, the metal grains are coarse, the rigidity and yield strength of the flange body are insufficient, and the flange neck and bolt seat undergo pressure creep deformation under high temperature and high pressure conditions;
The thickness of the flange and the forged size of the neck are not up to standard, the effective pressure-bearing wall thickness is too small, the sealing surface is warped after bearing pressure, and the gasket seal fails and leaks;
The tempering temperature of the heat treatment is too low, the residual stress of the forging is not eliminated, the stress deforms when the pipe temperature fluctuates, and the sealing surface fit is reduced.

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

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

The completion ceremony of the new petrochemical high-end equipment R&D and manufacturing project was successfully held

On the morning of December 29, the inauguration ceremony of Jiangyin Golden Boy Petrochemical Equipment-New Petrochemical High-end Equipment R&D and Manufacturing Project was successfully held.