Manufacturing method for forging die

A manufacturing method and technology of forging dies, applied in the direction of manufacturing tools, forging/pressing/hammering machinery, forging/pressing/hammer devices, etc., can solve problems such as difficulty in product quality assurance and high manufacturing costs, and reduce manufacturing costs. The mold processing cycle is shortened and the processing quality is easily guaranteed

Active Publication Date: 2016-03-02
中国第二重型机械集团德阳万航模锻有限责任公司
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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

Method used

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  • Manufacturing method for forging die

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Embodiment Construction

[0019] The present invention will be further explained below in conjunction with the drawings and embodiments:

[0020] The forging die manufacturing method includes the following steps in sequence:

[0021] A. Design the overall mold and calculate the load and residual stress distribution in three directions in space when the mold is working;

[0022] B. According to the residual stress distribution obtained in step A, design the splicing seam position of the sub-mold. The splicing seam position should avoid the residual stress concentration area, and all sub-molds are spliced ​​to form the same mold cavity as the overall mold;

[0023] C. According to the loads in the three directions of space obtained in step A, design the material, shape and specifications of the connecting parts for the bottom and side surfaces of the sub-mold at the splicing position, and it is required that the connecting parts are used for the sub-mold splicing to meet the overall requirements. The design stre...

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/24B21J13/02
CPCB21J13/02B23P15/24
Inventor 翟瑞志张鹏沈文涛崔明亮
Owner 中国第二重型机械集团德阳万航模锻有限责任公司
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