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Novel thermal forming method of high-strength steel plate stamping part

A high-strength steel plate and hot forming technology, which is applied in the field of hot stamping forming, can solve problems such as plate oxidation, achieve good surface quality, improve service life, and avoid damage

Inactive Publication Date: 2011-06-29
吉林诺亚机电科技有限公司
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The invention provides a new processing method for hot stamping forming parts, which mainly solves the problem of severe surface oxidation of plates at high temperatures during the production process of traditional hot forming technology

Method used

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  • Novel thermal forming method of high-strength steel plate stamping part
  • Novel thermal forming method of high-strength steel plate stamping part
  • Novel thermal forming method of high-strength steel plate stamping part

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Embodiment Construction

[0019] The content of the present invention and its specific implementation are further described below in conjunction with the examples shown in the accompanying drawings.

[0020] figure 1 The direct forming process is shown. The high-strength steel plate 1 is first blanked on the blanking press 2, and then transferred to a heating furnace 6 with a gas protective atmosphere by a manipulator 5 to heat the plate to a temperature above the recrystallization temperature, and keep it for a period of time. The plate is completely austenitized, and then transferred to the preliminary cooling chamber 7 without contact with air. There is still a gas shielding atmosphere in the chamber, and cooling gas is sprayed from the nozzle 9, and the steel plate is cooled. cool down. After the sheet is rapidly cooled to about 600°C at a rate of more than 27°C / S, it is quickly transferred to a hot stamping die for rapid forming, quenching, and pressure-holding for a period of time, so as to obta...

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Abstract

The invention relates to a novel thermal forming method of a high-strength steel plate stamping part, belonging to the field of thermal stamping forming. Based on a theory that a boron alloy plate which temporarily contacts with air below 600 DEG C can not generate oxide scales, the invention improves an original thermal stamping forming technology. The novel thermal forming method comprises the following steps: heating the plate to a temperature over a recrystallization temperature; transferring the plate to a cooling cavity chamber with a gas protection atmosphere under an air-isolation condition; cooling the plate to 600 DEG C at a rate faster than 27 DEG C / S; and then, rapidly transferring the plate to a thermal stamping forming die to rapidly form and cool to obtain a high-strength part without oxide scales on the surface. The invention solves the problem that the oxide scales are easy to generate on the surface of the plate at a high temperature condition in the thermal stampingforming process, improves the surface quality and the spraying performance of the part, lightens the cooling pressure of the die, delays the thermal fatigue failure of the die and prolongs the service life of the die.

Description

Technical field: [0001] The invention relates to a novel hot forming method for high-strength steel plate stamping parts, belonging to the technical field of hot stamping. Background technique: [0002] Hot stamping is a technology specially used to manufacture high-strength steel stamping parts. The parts made by this method have ultra-high strength and good dimensional accuracy. It is used in the field of automobile manufacturing and can improve the crash safety of automobiles. Performance, reduce body weight, and meet the requirements of energy saving and environmental protection, have received extensive attention in recent years. [0003] High-temperature oxidation protection of high-strength steel plates is a key problem to be solved in the hot stamping forming process. In the hot stamping forming process, the sheet needs to be heated above the recrystallization temperature. When the sheet at high temperature is in contact with the air, the surface will be severely oxi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C21D8/04
Inventor 谷诤巍朱超徐虹
Owner 吉林诺亚机电科技有限公司
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