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Automobile hub outer ring closed forging technology

A technology of automobile wheel hub and process, applied in the direction of wheels, vehicle parts, transportation and packaging, etc., can solve the problems of low efficiency, waste of raw materials, increased costs, etc., and achieve the effect of improving the qualification rate, reducing production costs, and precise forging technology.

Inactive Publication Date: 2018-01-23
WANXIANGQIANCHAO CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the traditional forging technology is open die forging. Open die forging is die forging with flash. During the forging process, it can ensure that the metal flows into the hole to fill the cavity, and finally the excess metal flows out from the flash, which can be used during forging. Guarantee that there will be no defects such as hollows in the mold, and ensure the quality of forgings. However, due to the existence of burrs, a large amount of raw materials will be wasted, which will increase the cost and cause low efficiency due to the need to remove burrs.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] A closed forging process for the outer ring of an automobile wheel hub, comprising the following steps:

[0027] a) Blanking: use the sawing process to make blanks, and control the weight difference between blanks and forgings within 0.3% when blanking;

[0028] b) Heating: heating the billet to 1100°C with an intermediate frequency heating furnace;

[0029] c) Upsetting: the billet is subjected to upsetting on the upsetting equipment to obtain a drum-shaped blank;

[0030] d) Pre-forging: the drum-shaped blank is made into a pre-forging through a pre-forging die;

[0031] e) Precision forging: the pre-forging is made into a forging through a precision forging die and a hot die forging press. The ejector stroke of the hot die forging press is 6cm;

[0032] f) cooling.

Embodiment 2

[0034] A closed forging process for the outer ring of an automobile wheel hub, comprising the following steps:

[0035] a) Blanking: use the sawing process to make blanks, and control the weight difference between blanks and forgings within 0.3% when blanking;

[0036] b) Heating: The billet is heated to 1400°C in an intermediate frequency heating furnace;

[0037] c) Upsetting: the billet is subjected to upsetting on the upsetting equipment to obtain a drum-shaped blank;

[0038] d) Pre-forging: the drum-shaped blank is made into a pre-forging through a pre-forging die;

[0039] e) Precision forging: the pre-forging is made into a forging through a precision forging die and a hot die forging press, and the ejector stroke of the hot die forging press is 8cm;

[0040] f) cooling.

Embodiment 3

[0042] A closed forging process for the outer ring of an automobile wheel hub, comprising the following steps:

[0043] a) Blanking: use the sawing process to make blanks, and control the weight difference between blanks and forgings within 0.1% when blanking;

[0044] b) Heating: heating the billet to 1100°C with an intermediate frequency heating furnace;

[0045] c) Upsetting: the billet is subjected to upsetting on the upsetting equipment to obtain a drum-shaped blank;

[0046] d) Pre-forging: the drum-shaped blank is made into a pre-forging through a pre-forging die, and the pre-forging process is performed once;

[0047] e) Precision forging: the pre-forging is made into a forging through a precision forging die and a hot die forging press. The ejector stroke of the hot die forging press is 6cm;

[0048] f) Cooling: first heat the forged piece after forging to 900°C and keep it warm for 30 minutes; then carry out continuous forced cooling of the processed forging piece ...

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PUM

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Abstract

The invention discloses an automobile hub outer ring closed forging technology. The automobile hub outer ring closed forging technology comprises the technological steps of blanking, heating, upsetting, pre-forging, precision forging, cooling and the like; according to blanking, a material sawing technology is adopted, and therefore the accuracy of a blanked blank can be better controlled, and burrs generated after forging can be reduced; and according to the cooling step, the lingering warmth normalizing technology can be adopted, it is guaranteed that forging waste heat is sufficiently used,the energy using high efficiency is improved, it is guaranteed that a metallographic structure of a treated forging piece is fine and evenly distributed, and the good mechanical property is achieved.By means of the automobile hub outer ring closed forging technology, trimming-free forging is achieved, and raw material consumption of the forging piece can be reduced; and the more accurate forgingtechnology is adopted, the product rejection rate is reduced, the product yield is improved, and the production cost of the forging piece is reduced.

Description

technical field [0001] The invention relates to the technical field of metal material processing, in particular to a closed forging process for the outer ring of an automobile wheel hub. Background technique [0002] Forging is a processing method that uses forging machinery to apply pressure to metal blanks to cause plastic deformation to obtain forgings with certain mechanical properties, certain shapes and sizes. It is one of the two major components of forging (forging and stamping). Forging can eliminate defects such as as-cast porosity produced in the metal smelting process and optimize the microstructure. At the same time, due to the preservation of complete metal flow lines, the mechanical properties of forgings are generally better than castings of the same material. [0003] However, the traditional forging technology is open die forging. Open die forging is die forging with flash. During the forging process, it can ensure that the metal flows into the hole to fill...

Claims

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Application Information

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IPC IPC(8): B21K1/40B21J1/04B21J1/06B21J5/08B21J5/02
Inventor 冯雪忠
Owner WANXIANGQIANCHAO CO LTD
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