Method for realizing gradient property distribution of hot stamping workpiece

A technology of pressed parts and high performance, applied in the field of hot stamping, can solve the problems of high cost, long production cycle, complex design, etc., and achieve the effect of convenient application, flexible use and saving manufacturing cost

Active Publication Date: 2013-11-27
SHANGHAI JIAO TONG UNIV
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

These methods generally need to design and manufacture different molds according to the different performance requirements of the parts, and need t

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  • Method for realizing gradient property distribution of hot stamping workpiece
  • Method for realizing gradient property distribution of hot stamping workpiece

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Embodiment Construction

[0019] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention.

[0020] see figure 1 and figure 2 . It should be noted that the diagrams provided in this embodiment are only schematically illustrating the basic idea of ​​the present invention, and only the components related to the present invention are shown in the diagrams rather than the number, shape and shape of the components in actual implementation. Dimensional drawing, the type, quantity and proportion of each component can be changed a...

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Abstract

The invention provides a method for realizing gradient property distribution of a hot stamping workpiece, comprising the following steps of: according to property requirements on the hot stamping workpiece, determining the mechanical properties that the hot stamping workpiece is necessary to have in different positions; according to the relationship between the final mechanical property and a cooling speed in the quenching process, determining the cooling speeds of the different positions of the hot stamping workpiece at the hot stamping quenching stage; determining the position of a thermal barrier coating needing to be formed on the inner surface of a mould, the material of the thermal barrier coating and the thickness of the thermal barrier coating according to the obtained corresponding cooling speeds of the hot stamping workpiece at different positions; forming the thermal barrier coating in a corresponding position of the mould in a corresponding way; performing moulding and quenching treatment on a plate through a hot stamping process to obtain the hot stamping workpiece, and realizing the gradient distribution of the mechanical properties by virtue of the difference of the cooling speeds at different positions of the hot stamping workpiece. The method is simple and convenient to implement so that lots of manufacture cost and production period are saved; the method is also flexible and efficient to use.

Description

technical field [0001] The invention relates to a hot stamping method, in particular to a method for realizing gradient performance distribution of hot stamping parts. Background technique [0002] At present, the application of ultra-high-strength steel has become one of the mainstream development trends in automobiles and other manufacturing fields, and hot stamping is an important way to realize ultra-high-strength steel parts. The process flow adopted by the existing hot stamping forming technology is as follows: select special hot stamping material - blanking - sheet metal heating and heat preservation (sheet material is fully austenitized) - move to the mold - complete forming and quenching at the same time Cooling—Ultra-high-strength stamped parts are finally obtained (the structure is martensite, and the strength is around 1500MPa or even higher). For anti-collision components in the modern automotive industry, different parts of the same component need to have diff...

Claims

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Application Information

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IPC IPC(8): C21D11/00C21D1/673C21D1/68C21D8/00
Inventor 韩先洪陈军颜震郝新
Owner SHANGHAI JIAO TONG UNIV
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