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A kind of high-toughness steel automobile hardware stamping part and its preparation process

A stamping parts, high toughness technology, applied in the field of auto parts, can solve the problems of short service life, toughness, poor welding performance, poor mechanical properties, etc., to achieve long service life, good processing performance, improve quality and mechanical properties Effect

Active Publication Date: 2018-03-20
ANHUI HONGQIAO METAL MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the carbon content of alloy steel is relatively high. Although its strength is high, its toughness and welding performance are poor, its mechanical properties are not good, and its service life is short.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] A high-toughness steel automotive hardware stamping, composed of the following elements by mass percentage: C 0.25%, Si0.42%, Mn 1.2%, B 0.003%, V 0.035%, Ni 0.025%, Mo 0.03%, Cu 0.075 %, Co0.05%, Ta 0.035%, P≤0.02%, S≤0.02%, N≤0.002%, and the balance is Fe and unavoidable impurities.

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

[0023] 1) Smelting: put ordinary steel scrap and pig iron into the converter for smelting, the melting temperature is 1500°C, after the molten steel is melted, add ferrosilicon and ferromanganese for precipitation deoxidation, adjust the composition, and then add ferrovanadium, ferronickel and ferromolybdenum to it , copper, cobalt iron, adjust the composition of each element in the steel, and finally add tantalum iron and ferroboron to remove slag;

[0024] 2) Casting: pouring molten steel into a mold for molding at a pouring temperature of 1380°C, after cooling to ro...

Embodiment 2

[0031] A high-toughness steel automotive hardware stamping, composed of the following elements by mass percentage: C 0.26%, Si0.44%, Mn 1.1%, B 0.003%, V 0.04%, Ni 0.025%, Mo 0.025%, Cu 0.08 %, Co0.045%, Ta 0.03%, P≤0.02%, S≤0.02%, N≤0.002%, and the balance is Fe and unavoidable impurities.

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

[0033] 1) Smelting: put common steel scrap and pig iron into the converter for smelting, the smelting temperature is 1490°C, add ferrosilicon and ferromanganese for precipitation deoxidation after molten steel is melted, adjust the composition, and then add ferrovanadium, ferronickel and ferromolybdenum to it , copper, cobalt iron, adjust the composition of each element in the steel, and finally add tantalum iron and ferroboron to remove slag;

[0034] 2) Casting: pouring molten steel into a mold for molding at a pouring temperature of 1370°C, after cooling to room temp...

Embodiment 3

[0041] A high-toughness steel automotive hardware stamping, composed of the following elements by mass percentage: C 0.23%, Si0.45%, Mn 1.1%, B 0.004%, V 0.03%, Ni 0.03%, Mo 0.02%, Cu 0.09 %, Co 0.03%, Ta0.04%, P≤0.02%, S≤0.02%, N≤0.002%, and the balance is Fe and unavoidable impurities.

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

[0043]1) Smelting: put ordinary steel scrap and pig iron into the converter for smelting, the smelting temperature is 1460°C, after the molten steel is melted, add ferrosilicon and ferromanganese for precipitation deoxidation, adjust the composition, and then add ferrovanadium, ferronickel and ferromolybdenum to it , copper, cobalt iron, adjust the composition of each element in the steel, and finally add tantalum iron and ferroboron to remove slag;

[0044] 2) Casting: pouring molten steel into a mold for molding at a pouring temperature of 1370°C, after cooling to room t...

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Abstract

The invention discloses a high-tenacity steel automobile hardware stamping part. The high-tenacity steel automobile hardware stamping part is prepared from, by mass percent, 0.21%-0.32% of C, 0.35%-0.52% of Si, 1.1%-1.3% of Mn, 0.001%-0.005% of B, 0.02%-0.05% of V, 0.01%-0.05% of Ni, 0.02%-0.06% of Mo, 0.05%-0.12% of Cu, 0.03%-0.08% of Co, 0.01%-0.05% of Ta, not larger than 0.02% of P, not larger than 0.02% of S, not larger than 0.002% of N and the balance Fe and inevitable impurities. A preparation process of the high-tenacity steel automobile hardware stamping part comprises the steps of smelting, casting, machining forming, surface treatment, nickelizing, quenching and tempering. The prepared hardware stamping part is good in quality, high in tenacity and strength, good in machining performance, not prone to breaking and long in service life and has wide application prospects.

Description

technical field [0001] The invention relates to the technical field of auto parts, in particular to a high-toughness 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 alloy steel in vehicle manufacturing. Steel plates can reduce the quality of parts by reducing the thickness of the plate or th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C38/02C22C38/04C22C38/12C22C38/08C22C38/16C22C38/10C22C33/06C23C10/00C21D1/18
CPCC21D1/18C22C33/06C22C38/02C22C38/04C22C38/105C22C38/12C22C38/16C22C38/32C23C10/00
Inventor 余昌国戚利军
Owner ANHUI HONGQIAO METAL MFG
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