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A kind of isothermal extrusion processing method of square tube aluminum alloy profile

An aluminum alloy profile, isothermal extrusion technology, applied in the field of warm extrusion processing, can solve problems such as cracking, mold outlet temperature affecting profile size accuracy, structure and performance, distortion, etc., to achieve uniform distribution, stable strength and plasticity, and guarantee uniformity effect

Active Publication Date: 2017-04-26
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the difference in die outlet temperature during the extrusion process seriously affects the dimensional accuracy, structure and performance of the profile, and even causes cracking and distortion

Method used

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  • A kind of isothermal extrusion processing method of square tube aluminum alloy profile
  • A kind of isothermal extrusion processing method of square tube aluminum alloy profile
  • A kind of isothermal extrusion processing method of square tube aluminum alloy profile

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] An isothermal extrusion processing method for a square tube aluminum alloy profile, comprising the following steps:

[0033] Step 1. According to the specifications of the square tube aluminum alloy profiles to be processed, the extrusion equipment is selected, and the size of the extrusion billet is calculated. The diameter of the extrusion billet is 200mm, and the length is 250mm.

[0034] Step 2. According to the extrusion production experience and data of the square tube aluminum alloy profile to be processed, determine that the heating temperature of the extrusion billet is 440°C, the temperature of the extrusion die is 430°C, the temperature of the extrusion pad is 420°C and The temperature of the extrusion barrel was 410°C.

[0035] Step 3. Set the segmented speed change model of the extrusion rod in the control system of the extrusion equipment, and divide the total extrusion stroke of 150mm into 5 sections. When the extrusion stroke is 0-40mm, the extrusion spe...

Embodiment 2

[0038] An isothermal extrusion processing method for a square tube aluminum alloy profile, comprising the following steps:

[0039] Step 1. According to the specifications of the square tube aluminum alloy profiles to be processed, the extrusion equipment is selected, and the size of the extruded billet is calculated. The diameter of the extruded billet is 190 mm, and the length is 240 mm.

[0040] Step 2. According to the extrusion production experience and data of the square tube aluminum alloy profiles to be processed, determine that the heating temperature of the extrusion billet is 435°C, the temperature of the extrusion die is 425°C, the temperature of the extrusion pad is 415°C and The temperature of the extrusion barrel was 405°C.

[0041]Step 3. Set the segmented speed change model of the extrusion rod in the control system of the extrusion equipment, and divide the total extrusion stroke of 150mm into 5 sections. When the extrusion stroke is 0-40mm, the extrusion spe...

Embodiment 3

[0044] An isothermal extrusion processing method for a square tube aluminum alloy profile, comprising the following steps:

[0045] Step 1. According to the specifications of the square tube aluminum alloy profiles to be processed, the extrusion equipment is selected, and the size of the extrusion billet is calculated. The diameter of the extrusion billet is 210mm, and the length is 260mm.

[0046] Step 2. According to the extrusion production experience and data of the square tube aluminum alloy profile to be processed, it is determined that the heating temperature of the extrusion billet is 445°C, the temperature of the extrusion die is 435°C, and the temperature of the extrusion pad is 425°C and extrusion barrel temperature was 415°C.

[0047] Step 3. Set the segmented speed change model of the extrusion rod in the control system of the extrusion equipment, and divide the total extrusion stroke of 150mm into 5 sections. When the extrusion stroke is 0-40mm, the extrusion spe...

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Abstract

The invention relates to the field of metal material extrusion processing, in particular to an isothermal extrusion processing method of a square pipe aluminum alloy section. The isothermal extrusion processing method of the square pipe aluminum alloy section comprises the steps of selecting extrusion equipment according to the specification of the square pipe aluminum alloy section to be processed, and calculating the size of an extrusion billet; determining the heating temperature of the extrusion billet, the temperature of an extrusion mold, the temperature of an extrusion pad and the temperature of an extrusion cylinder according to the extrusion production experience and data of the square pipe aluminum alloy section to be processed; arranging the sectional variable-speed model of an extrusion bar in a control system of the extrusion equipment, dividing a 150mm total extrusion travel into five sections and respectively controlling the extrusion speeds; performing the isothermal extrusion production of the square pipe aluminum alloy section according to parameters determined in the steps. The isothermal extrusion processing method of the square pipe aluminum alloy section has the advantages that the output temperature of the square pipe aluminum alloy section is kept within a certain range, thereby the uniformity of the organization and performance of the section along an extrusion direction is guaranteed and the hardness, strength, plasticity and stability of the section are improved.

Description

technical field [0001] The invention relates to the field of extrusion processing of metal materials, in particular to an isothermal extrusion processing method of square tube aluminum alloy profiles. Background technique [0002] Due to its own advantages, aluminum alloy profiles are widely used in various fields such as home appliances, construction, transportation, and aviation. Extruded aluminum alloy profiles have no cutting processing, and have the advantages of material saving, energy saving, and high performance of workpieces, making extrusion an irreplaceable production process for aluminum alloy profiles. However, the difference in die outlet temperature during the extrusion process seriously affects the dimensional accuracy, structure and performance of the profile, and even causes cracking and distortion. The rapid development of the isothermal extrusion process in recent years can effectively keep the metal temperature in the deformation zone of the die hole co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C31/00
Inventor 庞祖高杨志高班米扁
Owner GUANGXI UNIV
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