Manufacturing method for forging die

Abstract

The invention relates to a manufacturing method for a forging die. The method comprises the steps that a whole die is designed, and the load and stress distributing situations of the die in working condition are calculated; according to obtained mechanical data, appropriate joint line positions are selected, so that the same die cavities in the whole die are formed by jointing all sub-dies; connecting pieces are designed according to the mechanical data, and it is required that the requirement for the design strength can be met by jointing the sub-dies into the whole die through the connecting pieces; all real objects are manufactured and are subjected to rough machining and heat treatment, and finish machining is conducted on planes for positioning and key grooves; positioning keys are installed in the positioning planes and used as a positioning datum, and then jointing and installing are conducted on other positions; and the jointed whole die is obtained, and the die cavities are machined. As the sizes of the sub-dies are small, the machining quality of the sub-dies can be guaranteed more easily, and the manufacturing cost is also reduced significantly; in addition, the multiple sub-dies can be manufactured at the same time, so that the machining period of the die is shortened correspondingly.

Description

Technical field [0001] The invention relates to a die for forging, in particular to a manufacturing method suitable for large forging die. Background technique [0002] Hot die forging requires a forging die. The forging mold cavity has a corresponding shape that is opposite to the concave and convex of the forging. The pressure of the forging equipment presses the blank into the forging die to obtain a forging of the corresponding shape. [0003] With the development of forging technology, the demand for large forgings is increasing, and the size of the corresponding forging die increases accordingly. Because the performance and dimensional accuracy requirements of the forging die are very high, the larger the size of the forging die, the more difficult it is to guarantee the quality of its products and the higher the manufacturing cost. Summary of the invention [0004] The technical problem to be solved by the present invention is to provide a forging die manufacturing method, w...

AI Technical Summary

Problems solved by technology

Due to the high performance and dimensional accuracy requirements of the forging die, the larger the forging die size, the more difficult it is to guarantee the product quality, and the higher the manufacturing cost

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