Device for testing thermal friction coefficient of sheet material in hot stamping forming process

A technology of hot stamping and thermal friction, which is used in measurement devices, mechanical devices, analysis of materials, etc.

Inactive Publication Date: 2014-03-12
马鸣图
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Device for testing thermal friction coefficient of sheet material in hot stamping forming process
  • Device for testing thermal friction coefficient of sheet material in hot stamping forming process

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Embodiment

[0021] Embodiments, the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the present invention is not limited thereto.

[0022] A device for testing the friction coefficient of a plate during hot stamping forming, including a heating furnace 10, an argon gas bottle 11, an infrared thermometer 9, a pressurizing device, and a drawing device, characterized in that: the heating furnace 10 is connected to the argon gas bottle 11 through a pipeline ; The pressurizing device is installed at the mouth of the heating furnace 10;

[0023] Described pressurizing device is made up of hydraulically driven indenter 7 and pressure sensor 8; Wherein indenter 7 is divided into upper indenter 7-1 and lower indenter 7-2, and they are placed perpendicular to horizontal direction respectively; Upper indenter 7 -1 is provided with a threaded rotating device, which is used to adjust the size of the gap, and can be freely ro...

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Abstract

A device for testing thermal friction coefficient of a sheet material in a hot stamping forming process is used for testing the friction coefficient of a high strength steel sheet at a high temperature. The device comprises an argon bottle connected with a heating furnace through a pipeline, an infrared thermometer, a pressure head, a hydraulic mechanism, a sensor, a drawing device and the like, wherein in the heating furnace with protective atmosphere, a tested sheet material sample is heated; after a corresponding temperature is reached, the tested sheet material sample is discharged from a furnace mouth under the drawing of the drawing device and penetrates through the middle part of the pressure head; a pressure is exerted by the pressure head, and the sensor records a pressure value of the pressure head and a drawing force value; and according to a Coulomb friction formula, the friction coefficient is calculated by a computer processing system. The device is simple in structure, and can accurately test the friction coefficient value of a high-strength steel sheet at high temperature, so as to provide a significant parameter for design and numerical simulation of a hot forming process.

Description

technical field [0001] The invention belongs to the field of testing equipment for testing parameters, specifically, it is suitable for testing the friction coefficient value in the hot stamping forming process of high-strength steel plates. Background technique [0002] With the increasingly serious environmental and energy problems, more and more attention has been paid to the realization of energy saving and emission reduction in the automotive industry. Automobile lightweight is one of the important means to achieve energy saving and emission reduction of automobiles. In order to realize the lightweight of automobiles, the application of high-strength steel materials has become an important means. As an important forming method of high-strength steel materials, hot forming process has begun to be applied in the forming process of automobile parts. [0003] Friction and lubrication play an important role in sheet metal forming. The value of the friction coefficient is o...

Claims

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Application Information

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IPC IPC(8): G01N19/02
Inventor 马鸣图郭怡晖易洪亮孙致富宋磊峰方刚张均萍
Owner 马鸣图
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