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

A technology of hydraulic ejector and segmental strengthening, which is applied in the field of high-strength steel stamping, can solve problems such as complex structures, and achieve the effects of unified processing technology, cost saving, and improved product strength or elongation

Active Publication Date: 2016-05-04
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 hydraulic ejector device of press
  • Pressure cooling process of hot-formed steel pipe segment strengthening parts and hydraulic ejector device of press
  • Pressure cooling process of hot-formed steel pipe segment strengthening parts and hydraulic ejector device of press

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0062] like Figure 2-Figure 4 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:

[0063] figure 2 In its original state, according to figure 2 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 The upper slide block 7, the lower workbench 8 of the press, and the mold mandrel 9.

[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 mate...

Embodiment 2

[0077] like Figure 2-Figure 4 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, f 8 The area is the soft area HS700, and the rest of the product area is the hard area HS1150.

[0078] This method realizes the device such as figure 2 shown, where:

[0079] 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;

[0080] 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;

[0081] 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;

[0082] The lower mold 2 covers all areas of the hard area HS1150 of the product, and the material is high-quality mold steel SKD61;

[0083] The upper and lower hyd...

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Abstract

The invention discloses a pressure cooling process of segmented reinforcing type parts of a hot forming steel pipe, and pressing machine hydraulic ejector rod devices. By turning on and turning off the independent pressing machine hydraulic ejector rod devices, the magnitude of average loading force borne by a workpiece is adjusted, and the cooling speed of each sub-area of the workpiece is controlled, and therefore different types of material mechanical performance of the sub-areas of the workpiece are obtained. Required material characteristics can be achieved for any area according to the design requirements, no additional die heating device needs to be arranged, and production cost and procedure complexity are greatly reduced.

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 pipe 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 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...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D37/16B30B15/32B30B15/22C21D1/673
Inventor 陈扬
Owner WUXI LANGXIAN LIGHTWEIGHT TECH CO LTD
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