What are the reasons for internal interlayer and delamination cracks in forged pipe fittings?-Jiangyin Jintong Petrochemical Equipment Co., Ltd

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What are the reasons for internal interlayer and delamination cracks in forged pipe fittings?

05 Aug,2026

The raw material billet itself has shrinkage cavities, looseness, and slag inclusion defects. During forging, the metal stretches and tears to form delamination;

The raw material billet itself has shrinkage cavities, looseness, and slag inclusion defects. During forging, the metal stretches and tears to form delamination;
The forging heating temperature is uneven, the core temperature of the billet is too low, the plasticity of the inner and outer metals is greatly different, and extrusion and stretching produce internal interlayers;
Forging reduction is too large, single hammering deformation is severe, metal flow is disordered, and internal stress concentration cracks;
The cooling rate after forging is too fast, the thermal stress superimposes the forging residual stress, and delamination cracks extend.

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

None

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

None

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.