High-strength steel automobile metal stamping part and preparing technology thereof

A preparation process and technology for stamping parts, applied in the field of high-strength steel automotive metal stamping parts and its preparation, can solve the problems of low carbon content on the surface of parts, poor mechanical properties, poor formability, etc., and achieve good formability , reduce crack phenomenon, good strength effect

Inactive Publication Date: 2016-09-28
ANHUI HONGQIAO METAL MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In recent years, the vigorous promotion of the "energy saving and emission reduction" policy in the automotive industry has led to the use of alternative materials such as high-strength steel in vehicle manufacturing. There are obvious advantages in quantifying and improving safety performance. At present, there are many manufacturing methods for steel automotive metal stamping parts, but there are generally problems such as general quality, poor formability, low strength, poor wear resistance, and poor mechanical properties.
In addition, the hardware produced by the current process generally has the problems of low carbon content on the surface of the parts and poor hardness.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A high-strength steel automotive hardware stamping, composed of the following elements in mass percentage: C 0.15%, Si 0.47%, Mn 0.8%, B 0.0015%, Al 0.04%, Ti 0.04%, Ni 0.03%, Mo 0.09% , P≤0.01%, S≤0.01%, N≤0.002%, and the balance is Fe and unavoidable impurities.

[0022] The preparation process of high-strength steel automobile metal stamping parts includes the following steps:

[0023] 1) Smelting: put ordinary steel scrap and pig iron into the converter for smelting, the smelting temperature is 1480°C, after the molten steel is melted, add ferrosilicon and ferromanganese for precipitation deoxidation, adjust the composition, and then add aluminum, ferro-titanium, ferronickel, Ferromolybdenum, adjust the composition of each element in the steel, and finally add ferroboron to remove slag;

[0024] 2) Casting: pouring molten steel into a mold for molding at a pouring temperature of 1370°C, after cooling to room temperature, cleaning burrs and flashes to obtain a steel...

Embodiment 2

[0031] A high-strength steel automotive hardware stamping, composed of the following elements in mass percentage: C 0.17%, Si 0.50%, Mn 0.85%, B 0.002%, Al 0.04%, Ti 0.03%, Ni 0.03%, Mo 0.10% , P≤0.01%, S≤0.01%, N≤0.002%, and the balance is Fe and unavoidable impurities.

[0032] The preparation process of high-strength steel automobile metal stamping parts includes the following steps:

[0033] 1) Smelting: Add ordinary steel scrap and pig iron into the converter for smelting at a temperature of 1470°C. After the molten steel is melted, add ferrosilicon and ferromanganese for precipitation deoxidation, adjust the composition, and then add aluminum, ferro-titanium, ferro-nickel, Ferromolybdenum, adjust the composition of each element in the steel, and finally add ferroboron to remove slag;

[0034] 2) Casting: pouring molten steel into a mold for molding at a pouring temperature of 1360°C, after cooling to room temperature, cleaning burrs and flashes to obtain a steel plate; ...

Embodiment 3

[0041] A high-strength steel automotive hardware stamping, composed of the following elements in mass percentage: C 0.16%, Si 0.43%, Mn 0.9%, B 0.0025%, Al 0.03%, Ti 0.035%, Ni0.02%, Mo 0.08 %, P≤0.01%, S≤0.01%, N≤0.002%, and the balance is Fe and unavoidable impurities.

[0042] The preparation process of high-strength steel automobile metal stamping parts includes the following steps:

[0043] 1) Smelting: put ordinary steel scrap and pig iron into the converter for smelting, the smelting temperature is 1450°C, after the molten steel is melted, add ferrosilicon and ferromanganese for precipitation deoxidation, adjust the composition, and then add aluminum, ferro-titanium, ferronickel, Ferromolybdenum, adjust the composition of each element in the steel, and finally add ferroboron to remove slag;

[0044] 2) Casting: pouring molten steel into a mold for molding at a pouring temperature of 1350°C, after cooling to room temperature, cleaning burrs and flashes to obtain a steel...

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PUM

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Abstract

The invention discloses a high-strength steel automobile hardware stamping part, which is composed of the following elements in mass percentage: C 0.17%, Si 0.50%, Mn 0.85%, B 0.002%, Al 0.04%, Ti 0.03%, Ni 0.03% , Mo 0.10%, P≤0.01%, S≤0.01%, N≤0.002%, the balance is Fe and unavoidable impurities, and its preparation process includes smelting, casting, processing, surface treatment, carburizing, quenching and tempering fire steps. The metal stamping parts prepared by the invention have good quality, high strength, good formability, good wear resistance, not easy to break, good safety performance, long service life and broad application prospects.

Description

technical field [0001] The invention relates to the technical field of auto parts preparation, in particular to a high-strength steel auto hardware stamping part and a preparation process thereof. Background technique [0002] Many parts in automobiles are automobile stamping parts that are welded or machined after stamping or stamping. For example, spring brackets, compression valve covers, oil seal seats, bottom covers, impellers, etc. on automobiles all belong to automobile stamping parts. Automobile metal stamping parts for different purposes choose metal materials with different mechanical properties according to their use characteristics, so as to ensure the quality of their products. In recent years, the vigorous promotion of the "energy saving and emission reduction" policy in the automotive industry has led to the use of alternative materials such as high-strength steel in vehicle manufacturing. There are obvious advantages in quantifying and improving safety perf...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/14C22C38/08C22C38/12C22C33/06C23C8/22C21D1/18
CPCC22C38/02C21D1/18C22C33/06C22C38/001C22C38/04C22C38/06C22C38/08C22C38/12C22C38/14C23C8/22
Inventor 余昌国魏筘松
Owner ANHUI HONGQIAO METAL MFG
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