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Novel composite material suitable for automobile wheel hub mold

A composite material, automobile wheel hub technology, applied in the field of materials, can solve the problems of low mechanical strength, high cost, decreased precision, etc., and achieve the effect of reducing processing and manufacturing costs and improving mechanical properties

Inactive Publication Date: 2020-02-21
MAANSHAN CITY XIAOCHUN DIE MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the methods of manufacturing aluminum alloy wheels at home and abroad are mainly divided into two categories: one is the extrusion method, and the other is the casting method. Low, foreign countries have basically eliminated
Traditional extrusion dies adopt integral structure, and most of them use forged alloy die steel, which not only has high cost and complex process, but also has general wear resistance, and the accuracy decreases rapidly with the increase of the number of uses. Therefore, it is selected for automobile wheel hub dies material is extremely important

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Embodiment 1: A new type of composite material suitable for automobile wheel hub molds, with high-chromium white cast iron and scrap steel composed of specific proportion elements as the main raw materials, including high-chromium white cast iron including Cr, Mo, Cu metal elements, Cr, The mass fractions of Mo and Cu are 15 Cr, 0.8Mo, 0.4Cu, respectively. The ratio of high-chromium white cast iron to steel scrap is 120:1, and the heat treatment process after the modification treatment adopts rare earth silicon alloy, and the rare earth silicon alloy is used for modification. The mass fraction of the rare earth silicon alloy used in the treatment process is 0.3, and the heat treatment process adopts the isothermal quenching process. The quenching heating temperature is 1050°C, controlled at the isothermal temperature of 300°C, and cooled to room temperature after 1.0h. The high chromium white cast iron also includes the following The elements of each component are C, Mn,...

Embodiment 2

[0014] Embodiment 2: A new type of composite material suitable for automobile wheel hub molds. The main raw materials are high-chromium white cast iron composed of specific proportion elements and scrap steel, including high-chromium white cast iron including Cr, Mo, Cu metal elements, Cr, The mass fractions of Mo and Cu are 26 Cr, 1.4Mo, 0.8Cu, respectively. The ratio of high-chromium white cast iron to steel scrap is 130:1. The heat treatment process after the modification treatment is austempering by rare earth silicon alloy, and the modification is by rare earth silicon alloy. The mass fraction of the rare earth silicon alloy used in the treatment process is 0.6, and the heat treatment process adopts the isothermal quenching process. The quenching heating temperature is 1050 ° C, controlled at the isothermal temperature of 360 ° C, and cooled to room temperature after 1.5 hours. The high chromium white cast iron also includes the following The elements of each component are...

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PUM

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Abstract

The invention relates to the technical field of materials, in particular to a novel composite material suitable for an automobile wheel hub mold. The novel composite material adopts high-chrome whitecast iron composed of elements by a specific proportion and scrap steel as main raw materials, the high-chrome white cast iron comprises the metal elements of, by mass fraction, 15-26% of Cr, 0.8-1.4%of Mo and 0.4-0.8% of Cu, the proportion of the high-chrome white cast iron and the scrap steel is 120-130:1, rare earth silicon alloy is subjected to modification treatment, and then, a heat treatment technology adopts an isothermal quenching technology. According to the novel composite material, the high-chrome white cast iron and the scrap steel are utilized as the main raw materials, the metal and nonmetal components are added to serve as a mold material, the tissue structure of the cast iron can be transformed, the material mechanical properties are improved, and moreover, the machiningmanufacturing cost is reduced by 20-25% or so.

Description

technical field [0001] The invention relates to the technical field of materials, in particular to a new type of composite material suitable for automobile wheel hub molds. Background technique [0002] Automobile hub, the cylindrical metal part in the automobile tire with the shaft as the center to support the tire. In layman's terms, it is the part where the axle is installed in the center of the wheel. It is an important part connecting the brake drum (brake disc), wheel disc and half shaft. parts. Automobile wheels are an important part of auto parts. With the growth of China's auto parts industry, the wheel industry has gradually grown. In the next few years, China's automobile sales are expected to continue to grow steadily, providing opportunities for the development of the automobile wheel industry. [0003] The world's automobile industry is developing in the direction of light weight, high speed, safety, energy saving, comfort and less environmental pollution, so...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C33/08C21D1/20B21C25/02
CPCB21C25/025C21D1/20C22C33/08Y02P10/20
Inventor 陈世春
Owner MAANSHAN CITY XIAOCHUN DIE MATERIALS CO LTD