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A manufacturing process of an extrusion die

A manufacturing process, extrusion die technology, applied in the field of extrusion die manufacturing process, can solve the problem of difficulty in ensuring the actual size and roundness of the upper die core head, inaccurate wall thickness, and the tolerance of the wall thickness of the die hole cannot be processed at one time, etc. problems, to achieve the effect of removing manual intervention, avoiding mold wall thickness deviation, and optimizing process steps

Active Publication Date: 2018-10-26
GUANGDONG JMA ALUMINUM PROFILE FACTORY GRP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although this process can correct the defect of inaccurate wall thickness due to the position deviation of the die hole caused by the wire-cut lower die, it is difficult to guarantee the actual size and roundness of the upper core head when processing the circular pipe die, so the die hole The wall thickness tolerance cannot be processed in one pass

Method used

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  • A manufacturing process of an extrusion die

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Experimental program
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Effect test

Embodiment 1

[0040] 1S: Rough milling of CNC lower mold: No allowance is left for the depth of the welding chamber, empty cutter after milling 5° tapered shape, 2mm allowance for the length of the working belt, center drilling for positioning screw holes, milling out the calibration position

[0041] 2S: CNC upper mold rough milling; reserve 0.7mm allowance on one side of the core head, 1mm pre-height of the upper space knife, leave 0.2mm allowance for the depth and height of the lower space knife, drill pin holes, and mill out the calibration position.

[0042]3S: Vacuum quenching is used for heat treatment, heating from room temperature to 850°C for 1 hour, then heating to 1000°C for 1 hour, oil cooling to 200°C for release; tempering twice, first heating to 550°C for 3.5 hours, Cool to room temperature with blowing, heat for the second time to 570°C for 3.5 hours, and cool to room temperature with blowing. Finishing seam, mating surface and grinding surface.

[0043] 4S: Fine milling o...

Embodiment 2

[0047] 1S: Rough milling of CNC lower mold: No allowance is left for the depth of the welding chamber, the empty cutter is milled after 3° conical shape, 0.5mm allowance is left for the length of the working belt, the positioning screw hole is drilled in the center, and the calibration position is milled out

[0048] 2S: CNC upper mold rough milling; reserve 0.5mm allowance on one side of the core head, 0.5mm pre-height of the upper space knife, and 0.05mm allowance for the depth and height of the lower space knife; drill pin holes and mill out the calibration position.

[0049] 3S: Vacuum quenching is used for heat treatment, heating from room temperature to 850°C for 1.5 hours, then heating to 1050°C for 1.5 hours, oil cooling to 200°C for release; tempering twice, first heating to 580°C for 3.5 hours, Cool to room temperature with blowing, heat for the second time to 590°C for 3.5 hours, and cool to room temperature with blowing. Finishing seam, mating surface and grinding ...

Embodiment 3

[0054] 1S: Rough milling of CNC lower mold: no allowance is left for the depth of the welding chamber, empty cutter after milling 4° tapered shape, 1mm allowance is left for the length of the working belt, the positioning screw hole is drilled in the center, and the calibration position is milled out

[0055] 2S: CNC upper mold rough milling; reserve 0.6mm allowance on one side of the core head, 0.8mm pre-height of the upper space knife, and 0.1mm allowance for the depth and height of the lower space knife; drill pin holes and mill out the calibration position.

[0056] 3S: Vacuum quenching is used for heat treatment, heating from room temperature to 850°C for 2 hours, then heating to 1100°C for 2.5 hours, oil cooling to 200°C for release; tempering twice, first heating to 600°C for 3.5 hours, Cool to room temperature with blowing, heat for the second time to 610°C for 3.5 hours, and cool to room temperature with blowing. Finishing seam, mating surface and grinding surface.

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Abstract

The invention provides a manufacturing process for extrusion die. The manufacturing process comprises the following steps of 1S, CNC lower die body rough milling, 2S, CNC upper die body rough milling, 3S, heat treatment and finish turning of a spigot, fitting surfaces and ground surfaces, 4S, CNC upper die body finish milling, 5S, CNC lower die body finish milling and 6S, polishing. Compared with the prior art, the manufacturing process for the extrusion diverting die removes manual interference, and die wall thickness deviation caused by accumulative errors due to tedious procedures and some manual interference is avoided; the process steps are optimized, one-time finish machining of core mark and die hole sizes is achieved, and die arrangement can be succeeded through one-time assembling by a bench worker.

Description

technical field [0001] The invention relates to a manufacturing process of a gold extrusion die, in particular to a manufacturing process of a porous aluminum alloy extruding circular tube splitter die. Background technique [0002] In production, the manufacturing process of the aluminum alloy extrusion splitter mold generally adopts the traditional manufacturing process of matching the upper mold with a reserved allowance, that is, when the upper mold is finished, a 0.1-0.3mm allowance is reserved for the size of the working belt, and then the fitter more It is a manufacturing process that detects the actual wall thickness deviation in the second assembly and then removes the allowance or corrects it. Although this process can correct the defect of inaccurate wall thickness due to the position deviation of the die hole caused by the wire-cut lower die, it is difficult to guarantee the actual size and roundness of the upper core head when processing the circular pipe die, s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/24
CPCB23P15/24
Inventor 徐敏
Owner GUANGDONG JMA ALUMINUM PROFILE FACTORY GRP
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