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Pressure cooling process for thermally-formed steel plate sectionally-strengthen-type parts and press hydraulic ejector rod device

A segmented strengthening and hydraulic ejector technology, applied in the field of high-strength steel stamping, can solve problems such as complex structures, achieve uniform processing technology, improve product strength or elongation, and 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 press hydraulic ejector rod device
  • Pressure cooling process for thermally-formed steel plate sectionally-strengthen-type parts and press hydraulic ejector rod device
  • Pressure cooling process for thermally-formed steel plate sectionally-strengthen-type parts and press hydraulic ejector rod device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] Such as Figure 3-Figure 5 As shown, the workpiece is 1.8mm thick, 150mm wide, and 1000mm long. The workpiece product requirement is f6 and 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:

[0063] figure 1 In its original state, according to figure 1 It can be seen that the device for realizing this method includes: an upper die 1, a lower die 2, a hydraulic ejector pin 3 for the upper slider of the press, a hydraulic ejector pin 4 for the lower workbench of the press, an upper die pressing core 5, a lower die pressing core 6, a press Upper slide block 7, working table 8 under the press.

[0064] 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;

[0065] The upper mold pressing material core 5 covers the product soft zone HS400 range, and the material is high-quality mold st...

Embodiment 2

[0078] Such as Figure 3-Figure 5 As shown, the workpiece is 1.8mm thick, 150mm wide, and 1000mm long. The product requirement of the workpiece is that the product area corresponding to f6 is HS400 soft area, f8 is soft area HS700 except for f6 area, and the rest areas of the product are hard area HS1150.

[0079] This method realizes the device such as figure 1 shown, where:

[0080] 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;

[0081] 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;

[0082] The lower mold pressing material core 6 covers all areas of product soft zone HS400 and soft zone HS700, and the material is high-quality mold steel SKD61;

[0083] The lower mold 2 covers all areas of the hard area HS1150 of the product, and the material is high-quality mold steel SKD61;

[008...

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Abstract

Disclosed are a pressure cooling process for thermally-formed steel plate sectionally-strengthen-type parts and a press hydraulic ejector rod device in the field of thermal-forming punching. Through switching on and off of each independent press hydraulic ejector rod device, strength of average loading force applied on a workpiece is controlled to control cooling speed of each sub-region so as to acquire mechanical performance of different materials of all sub-regions of the workpiece. By the pressure cooling process and the press hydraulic ejector rod device, needed material characteristics can be realized at any region according to 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 for segmentally strengthened hot-formed steel plate parts with a strength of about 1500MP and a hydraulic ejector device for a press. 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: Stampi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D22/06B21D37/16B21D37/10B30B15/16B30B15/00
Inventor 陈扬
Owner WUXI LANGXIAN LIGHTWEIGHT TECH CO LTD
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