Pressure cooling technology for segmented and strengthened parts of hot-formed steel pipe and press servo top rod devices

A segmented strengthening and hot forming technology, applied in the field of high-strength steel stamping, can solve problems such as complex structure, achieve the effect of unifying processing technology, protecting human safety, and simplifying requirements

Active Publication Date: 2014-05-21
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 heati...

Method used

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  • Pressure cooling technology for segmented and strengthened parts of hot-formed steel pipe and press servo top rod devices
  • Pressure cooling technology for segmented and strengthened parts of hot-formed steel pipe and press servo top rod devices
  • Pressure cooling technology for segmented and strengthened parts of hot-formed steel pipe and press servo top rod devices

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] like Figure 3-Figure 5 As shown, the workpiece is 1.8mm thick, 80mm in diameter, 1000mm in length, and the schematic diagram of the cross-section forming and quenching of the hot-formed boron steel pipe workpiece. The workpiece product requirement is f 6 The corresponding product area is HS400 soft area, and the rest are hard area HS1150. A schematic diagram of the specific preparation process of this method, wherein:

[0064] figure 1 in the 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 servo ejector pin 3 on the press, a lower servo ejector pin 4, an upper molding material core 5, a lower molding material core 6, and an upper sliding block 7 on the press , Press lower table 8, die mandrel 9.

[0065] The upper die 1 covers the product hard area HS1150, and the material is high-quality die steel SKD61;

[0066] The upper molding material core 5 covers the product soft are...

Embodiment 2

[0078] like Figure 3-Figure 5 As shown, the workpiece is 1.8mm thick, 80mm in diameter and 1000mm in length, the schematic diagram of cross-section forming and quenching of hot-formed boron steel workpiece. The workpiece product requirement is f 6 The corresponding product area is HS400 soft area, f 8 The area is the soft area HS700, and the rest of the product area is the hard area HS1150.

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

[0080] The upper die 1 covers all areas of the product hard zone HS1150, and the material is high-quality die steel SKD61;

[0081] The upper molding material core 5 covers all areas of the product soft area HS400, and the material is high-quality mold steel SKD61;

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

[0083] The lower die 2 covers all areas of the product hard zone HS1150, and the material is high-quality...

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Abstract

A pressure cooling technology for segmented and strengthened parts of a hot-formed steel pipe and press servo top rod devices are characterized in that through the independent press servo top rod devices, the magnitude of loading force applied on workpieces and/or the length of time of stress and pressure applied on the workpieces can be adjusted, the each sub-regional cooling speed of the workpieces can be controlled, so that the mechanical performances of different materials in each sub-regional of the workpieces can be obtained. By means of the pressure cooling technology for the segmented and strengthened parts of the hot-formed steel pipe and the press servo top rod devices, the needed material performance can be achieved in any region according to a requirement of a design, an extra die heating device is not needed to be arranged, and production cost and process complexity can be reduced greatly.

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 press servo ejector pin device for a 1500MP or so hot-formed steel pipe segment reinforced part. Background technique [0002] As a new type of ultra-high-strength hot-formed steel pipe, automotive boron steel pipe provides the possibility for segmental strengthening technology - the same part, according to the needs of automobile design, different heat treatment processes can be used in different areas of the part, 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 pipe to the temperature required for heat treatment; [0004] 2) Transfer: transfer the boron steel pipe to the die to be punched; [0005] 3) Forming: stamping and forming by die at high tempe...

Claims

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Application Information

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IPC IPC(8): B21D22/02B21D37/16B30B15/22C21D1/18C21D1/673
Inventor 陈扬
Owner WUXI LANGXIAN LIGHTWEIGHT TECH CO LTD
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