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Manufacturing method of high-strength automobile brake hub

A technology of automobile braking and manufacturing method, applied in the field of auto parts, can solve the problems of low hardness, difficult to popularize and apply, and the performance cannot reach the performance index of automobile wheel hub, and achieves the effect of solving the poor strength and reducing the use efficiency.

Inactive Publication Date: 2013-10-16
宁波吉威熔模铸造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the performance of the spokes and thick parts of cast automobile wheels cannot meet the performance indicators of automobile wheels, the hardness is too low, so it is difficult to popularize and apply

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The manufacture method of embodiment 1 automobile brake hub

[0042] The composition of the alloy is (by weight %):

[0043] 0.27% carbon;

[0044] 0.60% tellurium;

[0045] 0.10% phosphorus;

[0046] 0.16% sulfur;

[0047] 0.80% silicon;

[0048] 0.03% aluminum;

[0049] 0.005% nitrogen;

[0050] 0.57% chromium;

[0051] 0.05% niobium;

[0052] 0.30% copper;

[0053] 0.55% europium;

[0054] 1.00% molybdenum;

[0055] 0.3% vanadium;

[0056] 0.0085% ytterbium;

[0057] 0.035% titanium:

[0058] The rest is iron and unavoidable impurities.

[0059] 30 kg of a steel material having the above composition was melted in a high-frequency vacuum furnace, followed by casting in which the cooling rate was 1.6° C. / min to form an ingot. The ingot was held at 900°C for 8 hours and then at 550°C for 60 minutes. Thereafter, hot forging was performed using a 500-ton hammer forging machine, thus producing Alloy 1.

[0060] Put the alloy into the preheating furnace for...

Embodiment 2

[0061] The preparation of embodiment 2 automobile brake hub

[0062] The automobile brake hub 2 was prepared in the same manner as in Example 1, except that the alloy did not contain molybdenum.

Embodiment 3

[0063] The preparation of embodiment 3 automobile brake hub

[0064] The automobile brake hub 3 was prepared in the same manner as in Example 1, except that the alloy did not contain ytterbium.

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Abstract

The invention relates to a manufacturing method of a high-strength automobile brake hub. The manufacturing method of the high-strength automobile brake hub comprises the following steps of manufacturing an automobile hub alloy spinning wheel blank according to the gravity casting method, conducting surface treatment and homogenization treatment on the surface of the cast spinning wheel blank, manufacturing an automobile brake hub blank according to the hot spinning technology, manufacturing the automobile brake alloy hub after conducting heat treatment, fine machining and surface coating on the automobile brake hub blank. The manufacturing method of the high-strength automobile brake hub can solve the problem that an existing automobile brake hub is poor in strength, and can remarkably improve the usage efficiency of the automobile brake hub.

Description

technical field [0001] The invention relates to the field of auto parts, in particular to a method for manufacturing a high-strength auto brake hub. Background technique [0002] As one of the heaviest auto parts, the automobile wheel hub is also the part with the most obvious lightweight effect. At present, the alloy automobile hub mainly adopts casting, forging, casting and forging and extrusion-spin composite forming methods. Casting automobile hubs are mainly prepared by gravity casting, low pressure casting, squeeze casting and other methods, and there have been related reports at home and abroad. However, because the performance of the spokes and the thick parts of the cast automobile hub cannot reach the performance index of the automobile hub, the hardness is too low, so it is difficult to popularize and apply. Contents of the invention [0003] The purpose of this invention is to provide a kind of manufacture method of high-strength automobile brake hub [0004]...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23P15/00C22C38/60C21D8/00
Inventor 罗绍康
Owner 宁波吉威熔模铸造有限公司