A quenching method for aerodynamic thermoforming of complex components of ultra-high-strength steel

An ultra-high-strength steel and ultra-high-strength technology, applied in quenching devices, forming tools, heat treatment furnaces, etc., can solve the problems of high design cost of cooling system, high cost of cooling pipeline design, and large thermal shock damage of molds, etc., to achieve Reduce the difficulty of forming technology and manufacturing cost, the effect of low technical implementation difficulty and high mold cost
CN107597966BActive Publication Date: 2019-04-12NANJING INST OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
NANJING INST OF TECH
Publication Date
2019-04-12

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Abstract

The invention discloses a pneumatic hot forming-atomization quenching method and device for an ultrahigh-strength steel complex component, and belongs to the technical fields of advanced metal manufacturing and plastic forming. The method comprises the steps that firstly, a punched plate is heated until austenization is complete; secondly, the punched plate is placed in a pneumatic forming device,a mold is closed, the plate and a female mold body are completely attached by gradually increasing the air pressure, and pressure maintaining is conducted for a period of time; thirdly, high-pressureatomized gas flowing at a high speed is formed in stamping equipment by atomizing supercooled liquid drops with circulating protection gas in a matched mode through a gas circulating control system,quick and uniform quenching is conducted on the ultrahigh-strength steel plate, and the complete Martensite structure is obtained; and lastly, cutting operation, punching operation and the like are conducted. According to the method, the non-uniform quenching phenomenon generated in the ultrahigh-strength steel cooling process can be effectively solved, the service life of the mold can be prolonged, the processes can be reduced, and the product surface quality can be improved; the forming efficiency of ultrahigh-strength steel can be improved, the cost can be reduced, and the high engineeringapplication value is achieved.
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Description

technical field

[0001] The invention belongs to the technical field of metal plastic forming, and in particular relates to a rapid mixing atomization gas quenching forming method for ultra-high-strength steel plates. Background technique

[0002] Technological innovation in the automobile manufacturing industry is of great significance to promote my country's economic development and industrial modernization. Among them, strengthening the passive safety of automobiles through the improvement of the structural strength of key safety components is the core element of the development of the automobile manufacturing industry. At the same time, the development of automobile lightweight technology is an important theme in the current automobile manufacturing industry and an important way to solve the global energy crisis and environmental problems. "National Medium and Long-Term Science and Technology Development Plan (2006-2020)" and "Made in China 2025" clearly set the research...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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