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Pressure cooling process of hot-formed steel pipe segment strengthening parts and press servo ejector device

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, simplifying requirements, and improving product strength or elongation

Active Publication Date: 2016-05-25
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 of hot-formed steel pipe segment strengthening parts and press servo ejector device
  • Pressure cooling process of hot-formed steel pipe segment strengthening parts and press servo ejector device
  • Pressure cooling process of hot-formed steel pipe segment strengthening parts and press servo ejector device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] Such as Figure 3-Figure 5 As shown, the workpiece has a thickness of 1.8mm, a diameter of 80mm, and a length of 1000mm. The schematic diagram of the section forming and quenching of the thermally 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. The concrete preparation process schematic diagram of this method, wherein:

[0064] image 3 In its original state, according to image 3 It can be seen that the device for realizing this method includes: upper mold 1, lower mold 2, upper servo ejector pin 3 of the press, lower servo ejector pin 4 of the press, upper mold pressing core 5, lower mold pressing core 6, and upper slider 7 of the press , Press lower table 8, mold mandrel 9.

[0065] 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;

[0066] The upper mold pressing materi...

Embodiment 2

[0078] Such as Figure 3-Figure 5 As shown, the workpiece has a thickness of 1.8mm, a diameter of 80mm, and a length of 1000mm. The schematic diagram of the section forming and quenching of hot-formed boron steel workpieces. 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 image 3 shown, where:

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

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

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

[0083] The lower mold 2 covers all areas of the hard ...

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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 servo ejector device of a press for about 1500MP hot-formed steel pipe section strengthening parts. Background technique [0002] As a new type of ultra-high-strength hot-formed steel pipe for automobiles, boron steel pipes for automobiles provide 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 pipe to the temperature required for heat treatment; [0004] 2) Transmission: transfer the boron steel pipe to the mold to be stamped; [0005] 3) Forming: Stamping and for...

Claims

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Application Information

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