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Pressure cooling process for thermally-formed steel plate sectionally-strengthen-type parts and die servo device

A segmented strengthening and hot forming technology, applied in the field of high-strength steel stamping, can solve problems such as complex structure, and achieve the needs of unified and simplified processing technology, and the effect of simple structure

Active Publication Date: 2014-05-28
WUXI LANGXIAN LIGHTWEIGHT TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0018] In terms of mold structure, this technology requires a heating device inside the active punch and die, so the structure is complicated

Method used

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  • Pressure cooling process for thermally-formed steel plate sectionally-strengthen-type parts and die servo device
  • Pressure cooling process for thermally-formed steel plate sectionally-strengthen-type parts and die servo device
  • Pressure cooling process for thermally-formed steel plate sectionally-strengthen-type parts and die servo device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Such as Figure 3-Figure 5 As shown, the workpiece is 2.0mm thick, 150mm wide, and 1000mm long. The workpiece product requirement is f 6 The corresponding product area is HS400 soft area, and the rest are hard area HS1150. The concrete preparation process schematic diagram of this method, wherein:

[0062] figure 1 In its original state, according to figure 1 It can be seen that the device for realizing this method includes: upper mold 1, lower mold 2, upper mold in-mold servo cylinder 3, lower mold in-mold servo cylinder 4, upper mold pressing core 5, lower mold pressing core 6, upper slider 7 of the press 8. Workbench under the press.

[0063] The upper mold 1 covers the range of HS1150 in the hard area of ​​the product, and the material is high-quality mold steel SKD61;

[0064] The upper mold pressing material core 5 covers the product soft zone HS400 range, and the material is high-quality mold steel SKD61;

[0065] The lower mold pressing material core 6 co...

Embodiment 2

[0083] Such as Figure 3-Figure 5 As shown, the workpiece is 2.0mm thick, 150 wide, 1000 long hot-formed boron steel workpiece section forming and quenching diagram. The workpiece product requirement is f 6 The corresponding product area is HS400 soft area, f 8 except f 6 Outside the area is the soft area HS700, and the rest of the product area is the hard area HS1150.

[0084] This method realizes the device such as figure 1 shown, where:

[0085] The upper mold 1 covers all areas of the product soft area HS700 and hard area HS1150, and the material is high-quality die steel SKD61;

[0086] The upper mold pressing material core 3 covers all areas of the soft area HS700 of the product, and the material is high-quality mold steel SKD61;

[0087] The lower mold pressing material core 6 covers all areas of the product soft zone HS400 and soft zone HS700, and the material is high-quality mold steel SKD61;

[0088] The lower mold 2 covers all areas of the hard area HS1150 of...

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Abstract

Disclosed are a pressure cooling process for thermally-formed steel plate sectionally-strengthen-type parts and a die servo device in the field of thermal-forming punching. Through a servo cylinder device in a die, strength and time of pressure-maintaining loading force applied on different regions of a workpiece are controlled according to design needs to control cooling speed of each sub-region so as to acquire different physical characteristics of all sub-regions of a plate. By the pressure cooling process and the die servo device, needed material characteristics can be realized at any region according to the design needs without additionally arranging a die heating device, so that production cost and process complexity are lowered remarkably.

Description

technical field [0001] The invention relates to a method in the technical field of high-strength steel stamping, in particular to a pressure cooling process and a mold servo device for segmentally strengthened parts of high-strength hot-formed steel plates. Background technique [0002] As a new type of ultra-high-strength hot-formed steel plate, automotive boron steel plate provides the possibility for segmental strengthening technology—the same part can adopt different heat treatment processes in different regions of the part according to the needs of automobile design, so as to obtain different strength and plasticity. The production process of the soft zone technology for hot-formed boron steel materials is divided into 4 stages: [0003] 1) Heating: heating the boron steel plate to the temperature required for heat treatment; [0004] 2) Transmission: transfer the boron steel plate to the die to be stamped; [0005] 3) Forming: Stamping and forming by mold at high te...

Claims

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Application Information

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IPC IPC(8): B21D22/06B21D37/16B21D37/10B30B15/16
Inventor 陈扬
Owner WUXI LANGXIAN LIGHTWEIGHT TECH CO LTD
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