Die structure for forging and pressing shell forgings and manufacturing and repairing method of die structure

By decomposing the shell forging mold into upper and lower mold components and adjusting the size and shape of each component, the problems of mold deformation and forging dimension control are solved, high-precision forming and low-cost molding are achieved, and production efficiency and quality stability are improved.

CN119702932APending Publication Date: 2025-03-28CHONGQING JIEPIN TECH +3
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Patent Information

Application Number
CN202411970496.5
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2024-12-30
Publication Date
2025-03-28

AI Technical Summary

Technical Problem

In the prior art, shell forging molds will deform during use, resulting in difficult control of the size and contour accuracy of the forging, and the traditional mold repair method is costly and time long.

Method used

A combined mold structure divided into upper mold assembly and lower mold assembly is adopted. The mold assembly is divided through numerical simulation software and the size and shape of each component are adjusted to achieve precision forming of forgings and mold repair.

Benefits of technology

It improves the consistency of mechanical properties and deformation controllability of the mold, realizes precise control of forging dimensions and contours, reduces mold repair costs and time, and improves production efficiency and quality stability.

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Abstract

The invention discloses a mold structure for forging and pressing shell forgings and a manufacturing and repairing method thereof.The mold structure comprises an upper mold assembly and a lower mold assembly, and the upper mold assembly comprises an upper mold core module, an upper mold sleeve module and an upper mold base plate; the lower die assembly comprises a lower die core module, a lower die sleeve module and a lower die base plate. The manufacturing method comprises the following steps: 1) determining the initial size of each component; 2) performing a first test; 3) carrying out a second test; 4) carrying out a third test; the repairing method comprises the following steps: 1) comparing an obtained forge piece with a theoretical size, and adjusting a deviation value; the method comprises the steps of (1) forging and pressing, (2) forging and pressing again, comparing the obtained forge piece with the theoretical size and adjusting the deviation value, and (3) forging and pressing again, comparing the obtained forge piece with the theoretical size and adjusting the deviation value again, and is high in machining precision, convenient to repair, capable of achieving large-batch precision machining, high in production efficiency and stable and reliable in quality.
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