Test method and establishment method of thermoforming wrinkling limit surface based on this method

A hot forming and stamping test technology, which is applied in the direction of applying stable tension/pressure to test the strength of materials, to achieve the effect of ingenious design and improved precision

Active Publication Date: 2019-05-10
HUNAN UNIV
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The problem to be solved by the present invention is to provide a method for establishing the wrinkle limit surface of high-strength steel plate hot forming, which can not only solve the wrinkle evaluation problem that can be solved by the traditional forming wrinkle limit surface, but also provide a method that can accurately and intuitively judge Evaluation criteria for wrinkling during hot forming of high-strength steel plates

Method used

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Test method and establishment method of thermoforming wrinkling limit surface based on this method
  • Test method and establishment method of thermoforming wrinkling limit surface based on this method
  • Test method and establishment method of thermoforming wrinkling limit surface based on this method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0042] Attached below Figure 1-8 The technical solution of the present invention is described in detail.

[0043] In order to obtain the thermoforming wrinkling limit line, maintain a stable temperature during the heat preservation and test stages, and prevent excessive oxidation of high-strength steel, the present invention provides a thermoforming stamping test device for high-strength metal sheets, which includes: support 1, gas One-way valve 2, sealing box 3, resistance wire 4, quartz glass 5, high-speed camera 6, infrared temperature sensing device 7, bracket top cover 8, punch hydraulic pump 9, breather pipe 10, punch hydraulic pump connecting rod sealing ring 11. Punch 12, positioning ring 13, test piece 14, die 15, sealing box support 16.

[0044]Wherein, the sealing box support 16 and the support 1 are welded on the base. Both ends of the die 15 have grooves for matching with the seal box support and positioning the die 15 . The locating ring 13 and the punch are ...

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
Login to view more

PUM

No PUM Login to view more

Abstract

The invention provides a thermoforming stamping test device for high-strength metal board materials, which includes: a support (1), a gas one-way valve (2), a sealing box (3), a resistance wire (4), quartz glass (5), a high-speed camera (6), an infrared temperature sensing apparatus (7), a support top cover (8), a stamping head hydraulic pump (9), a gas inlet pipe (10), a stamping head hydraulic pump connecting rod sealing ring (11), a stamping head (12), a positioning ring (13), a test piece (14), a concave die (15) and a sealing box pedestal (16). The invention also provides a test method of the thermoforming stamping test device for the high-strength metal board materials and an establishment method of a thermoforming wrinkling limit surface on the basis of the method. In the invention, the thermoforming anti-wrinkling performance of a high-strength steel plate can be determined on the basis of the height of the wrinkling limit surface. The higher is the wrinkling limit surface; the better is the thermoforming anti-wrinkling performance of the high-strength steel plate.

Description

technical field [0001] The invention relates to the field of thermoforming processing of metal sheets, in particular to a method for establishing a wrinkling limit surface for thermoforming of metal sheets. Background technique [0002] High-strength steel usually refers to steel with a tensile strength higher than 370MPa. It has a good combination of strength and toughness. Its outstanding features are high specific strength and good anti-collision performance. Realizing the lightweight of automobiles has broad market application prospects. However, experiments have shown that the formability of high-strength steel plates is poor at room temperature, and defects such as wrinkling and cracking are prone to occur, which seriously affects the popularization and application of high-strength steel plates. Studies have shown that the hot forming process can effectively improve the formability of high-strength steel plates, and is conducive to obtaining formed parts with high sur...

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
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/18
CPCG01N3/18
Inventor 崔俊佳李光耀孙光永欧航
Owner HUNAN UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap