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Cooling-gas direct cooling process and device based on hot forming mould of boron steel plate

A technology of cooling gas and hot forming, applied in the direction of forming tools, manufacturing tools, metal processing equipment, etc., can solve the problem of dependent and limited heat transfer efficiency of die steel, and achieve the effect of high cooling efficiency and improving cooling efficiency.

Inactive Publication Date: 2013-10-23
陈扬
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this technology enters the pressure-holding and cooling stage after being stamped and formed by the die. First, the heat is transferred to the die steel, and the die steel transfers the heat to the cooling liquid circuit arranged in it, so as to realize the cooling of the boron steel workpiece; this way The cooling efficiency of the workpiece not only depends on the arrangement of the cooling liquid circuit, but also is limited by the heat transfer efficiency of the die steel. It belongs to the hot forming process in which the cooling liquid indirectly cools the workpiece.

Method used

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  • Cooling-gas direct cooling process and device based on hot forming mould of boron steel plate
  • Cooling-gas direct cooling process and device based on hot forming mould of boron steel plate
  • Cooling-gas direct cooling process and device based on hot forming mould of boron steel plate

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Experimental program
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Effect test

Embodiment 1

[0040] Such as figure 2 As shown, this embodiment includes: an upper mold 1 , a lower mold 2 and a semi-open cooling air channel 6 arranged on the contact surface of the upper mold 1 and the lower mold 2 . The cooling gas channels are unified into D6 semicircular grooves, and the distance between the centers of the grooves is uniformly 12mm. The press is a 150T special press for thermoforming, providing 4 sets of common industrial air-cooling air sources, the initial temperature of each set is -18C, the flow rate is 1000g / min, and the rated power is 7.5KW.

[0041] The workpiece is a 1.5mm thick boron steel plate with a length of 100mm and a section width of 150mm. The rounded corners are uniformly R9, and the draft angle is 60°C, that is, the arc length is 9.42mm.

[0042] Depending on the characteristics of the product workpiece 6, respective convex corners 2 and concave corners 3, as well as associated planar regions 4, are formed. During the high-temperature forming pro...

Embodiment 2

[0051] Such as figure 2 As shown, this embodiment includes: an upper mold 1 , a lower mold 2 and a semi-open cooling air channel 6 arranged on the contact surface of the upper mold 1 and the lower mold 2 . The cooling gas channels are unified into D6 semicircular grooves, and the distance between the centers of the grooves is uniformly 12mm. The press is a 150T special press for thermoforming, providing 8 sets of common industrial air-cooling air sources, the initial temperature of each set is -18C, the flow rate is 1000g / min, and the rated power is 7.5KW.

[0052] The workpiece is a 1.5mm thick boron steel plate with a length of 200mm and a section width of 150mm. The rounded corners are uniformly R6, and the draft angle is 60°C, that is, the arc length is 6.28mm.

[0053] Depending on the characteristics of the product workpiece 6, respective convex corners 2 and concave corners 3, as well as associated planar regions 4, are formed. During the high-temperature forming pro...

Embodiment 3

[0062] Such as figure 2 As shown, this embodiment includes: an upper mold 1 , a lower mold 2 and a semi-open cooling air channel 6 arranged on the contact surface of the upper mold 1 and the lower mold 2 . The cooling gas channels are uniformly formed as 3mm wide and 9mm deep rectangular grooves, and the groove spacing is uniformly 12mm. The press is a 150T special press for thermoforming, providing 6 sets of common industrial air-cooling air sources, the initial temperature of each set is -18C, the flow rate is 1000g / min, and the rated power is 7.5KW.

[0063] The workpiece is a 2.5mm thick boron steel plate with a length of 100mm and a section width of 150mm. The rounded corners are uniformly R6, and the draft angle is 30°C, that is, the arc length is 3.14mm.

[0064] Depending on the characteristics of the product workpiece 6, respective convex corners 2 and concave corners 3, as well as associated regions 4, are formed. During the high-temperature forming process, due t...

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Abstract

The invention relates to a cooling-gas direct cooling process and device based on a hot forming mould of a boron steel plate, belonging to the technical field of heat-treatment plastic forming. The device comprises an upper die, a lower die, semi-open cooling gas passages and a cooling gas supply system, wherein the semi-open cooling gas passages are arranged in the contact surface of the upper die and the lower die, and the cooling gas supply system is provided by a press machine for the mould; the upper die and the lower die are respectively composed of a plurality of plane areas, a convex angle area and a concave angle area; and the semi-open cooling gas passages are respectively arranged in the plane areas and the concave angle area of the lower die and the plane areas and the concave angle area of the upper die. The device can cause a workpiece to be formed smoothly through mould stamping in a forming stage and can also realize that cooling gas directly cools the workpiece in a pressure-maintaining cooling stage.

Description

technical field [0001] The invention relates to a method and equipment in the technical field of heat treatment plastic forming, in particular to a cooling gas direct cooling process and device for a hot forming mold based on a boron steel plate. Background technique [0002] As a series of hot-formed steel plates, boron steel plates are produced in the following ways: figure 1 As shown, it is divided into two stages: forming and quenching and cooling, in which: the forming stage needs to be stamped and formed by a mold at high temperature; The transformation of the structure results in extremely high strength and hardness: depending on the type of boron steel, its strength can reach 500-2000MPa. The chemical composition of common boron steel with a strength of 1500MPa after hot forming is: [0003] C Si mn P S Cr B min 0.20 0.20 1.00 - - 0.15 0.0015 max 0.25 0.35 1.30 0.025 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/16
Inventor 陈扬
Owner 陈扬
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