A processing method of an automobile one-axis forging die

A processing method and mold technology, applied in the field of mold processing, can solve problems such as short service life, and achieve the effect of eliminating cutting stress, eliminating stress and stable performance.

Active Publication Date: 2018-06-08
MAANSHAN CHANGYE HEAVY IND TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to overcome the shortcomings of the short service life of the forging die in the prior art, and provide a processing method for the one-axis forging die of an automobile. The technical proposal of the present invention, through the improvement of the material composition and the heat treatment process, makes the forging die The mechanical properties are improved, the structure and grain are refined, and the service life of the forging die is improved

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] A kind of processing method of automobile one-axis forging mold of the present embodiment, its processing steps are:

[0032] Step 1. Raw material preparation, using a round bar blank to prepare for forging. The components of the round bar blank are calculated by weight percentage: C: 0.43%, Si: 1.10%, Mn: 0.42%, S: ≤0.010%, P: ≤ 0.015%, Cr: 5.0%, Ni: 0.08%, Cu: 0.010%, Mo: 1.25%, and the balance is Fe.

[0033] Step 2. Forging the material with three piers and three pulls, the rough forging ratio of the round bar blank to the blank after forging is 3.8;

[0034] The specific forging process is as follows: heating the blank to 1090°C for the first pier thickening and elongation forging, the forging ratio is 1.7, which is the height ratio after one pier thickening and elongation processing; then the blank Heating to 860°C, carry out the second thickening and elongating forging, the forging ratio is 1.6; after the second forging, heat the workpiece to 860°C, and perform ...

Embodiment 2

[0045] A kind of processing method of automobile one-axis forging mold of the present embodiment, its processing steps are:

[0046]Step 1. Raw material preparation, using a round bar blank to prepare for forging. The components of the round bar blank are calculated by weight percentage: C: 0.41%, Si: 1.08%, Mn: 0.42%, S: ≤0.010%, P: ≤ 0.015%, Cr: 5.2%, Ni: 0.08%, Cu: 0.010%, Mo: 1.25%, and the balance is Fe.

[0047] Step 2. Forging the material with three piers and three pulls, the forging ratio of the round bar blank to the forged blank is 4;

[0048] The specific forging process is as follows: heating the blank to 1100°C for the first pier thickening and elongation forging with a forging ratio of 1.8; then heating the blank to 900°C for the second pier thickening and elongation forging, The forging ratio is 1.6; after the second forging, the workpiece is heated to 860°C, and the third forging pier is thickened and elongated, and the forging ratio is 1.4.

[0049] Step 3,...

Embodiment 3

[0059] A kind of processing method of automobile one-axis forging mold of the present embodiment, its processing steps are:

[0060] Step 1. Raw material preparation, using a round bar blank to prepare for forging. The components of the round bar blank are calculated by weight percentage: C: 0.42%, Si: 1.08%, Mn: 0.41%, S: ≤0.010%, P: ≤ 0.015%, Cr: 5.0%, Ni: 0.10%, Cu: 0.009%, Mo: 1.25%, and the balance is Fe.

[0061] Step 2. Forging the material with three piers and three pulls, the forging ratio of the round bar blank to the forged blank is 4;

[0062] The specific forging process is as follows: heating the blank to 1100°C for the first thickening and elongating forging with a forging ratio of 1.8; then heating the blank to 880°C for the second thickening and elongating forging. The forging ratio is 1.6; after the second forging, the workpiece is heated to 880°C, and the third forging pier is thickened and elongated, and the forging ratio is 1.4.

[0063] Step 3, annealin...

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Abstract

The invention discloses a method for processing an automobile uniaxial forging die and belongs to the field of die processing. The method comprises the steps of preparing raw materials; performing three-compacting three-pulling forging treatment on bars, and enabling the forging ratio to be 3.8-4; performing annealing treatment and machining treated workblank; after rough machining, performing quenching and three-time tempering to make the die hardness be 46-47; and finally performing finish machining, perform fourth-time tempering to remove cutting stress. According to the technical scheme, through the improvement of material compositions and a heating processing technology, the mechanical property of the forging die is improved, tissue grains are refined, and the service life of the forging die is prolonged.

Description

technical field [0001] The invention relates to the technical field of die processing, and more specifically, relates to a processing method of an automobile one-axis forging die. Background technique [0002] The first shaft of the car is a shaft located in the gearbox and connected to the clutch. Its function is to input the power of the car engine into the gearbox through the control of the clutch. In order to make a shaft have good mechanical properties, the shaft is usually processed by forging and machining. [0003] At present, most of the mold steel used for processing the first axis of automobiles is H13 steel, which implements the standard GB / T1299-2000, and the grade is 4Cr5MoSiV1; the chemical composition of H13 is (mass fraction%): C: 0.32~0.45, Si: 0.80~1.20, Mn: 0.20-0.50, Cr: 4.75-5.50, Mo: 1.10-1.75, V: 0.80-1.20, P≤0.030, S≤0.030, and the balance is Fe. Using the standard die steel, the one-axis forging die processed by ordinary processing technology can ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/24B21J5/00C21D1/26C21D1/18C21D9/00C22C38/18C22C38/16C22C38/12C22C38/08C22C38/02C22C38/04
CPCB21J5/002B23P15/24C21D1/18C21D1/26C21D9/0068C22C38/02C22C38/04C22C38/08C22C38/12C22C38/16C22C38/18
Inventor 程圣群夏大亭
Owner MAANSHAN CHANGYE HEAVY IND TECH
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