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Processing technology for magnesium alloy and aluminum alloy sections

A technology of aluminum alloy profile and processing technology, which is applied in the field of metal material processing, can solve the problems of scratching the profile surface, low extrusion efficiency, and increased extrusion cost, so as to improve economic benefits, improve extrusion efficiency, and reduce short extrusion The effect of pressing time

Inactive Publication Date: 2012-12-12
ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Light metals such as aluminum and magnesium have high chemical activity. After repeated heating and contact with air, it is easy to produce an oxide layer (skin) on the surface of the alloy round rod. During the extrusion process, the oxide skin scratches the surface of the profile, resulting in poor surface quality of the extruded profile.
On the other hand, the flat dies currently used keep the extrusion excess of 10-15cm in the alloy bar, which requires four actions of "unlocking, scissors down, scissors up, and locking" to complete the excess shearing and extrusion. Low compression efficiency and low utilization of raw materials lead to increased extrusion costs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0008] For a hollow structure AZ31 magnesium alloy profile, its wall thickness is 3.5mm, the diameter of the outer cut circle is φ82mm, and the length is 9000mm.

[0009] Send the AZ31 magnesium alloy semi-continuous casting bar with a diameter of 178mm and a length of 2-3m into the hot shear furnace, heat it at 420-450°C for 6-10h, and cut it to a length of 400-600mm at the outlet of the hot frying furnace The extruded blank enters the clamping mechanism of the peeling machine through the slideway, and after being peeled by the inverted tooth-shaped props of the peeling machine, the bright-surfaced bar is directly sent into the extrusion cylinder through the feeding mechanism, and the secondary fusion mold (front type Die), high-temperature extrusion forming, and the subsequent bar material repeats the above actions to realize continuous extrusion processing of profile products without residual material.

Embodiment 2

[0011] For a ZK60 magnesium alloy profile with a large aspect ratio with cantilever beam, its wall thickness is 6mm, the diameter of the outer truncated circle is φ226mm, and the length to length is 8000mm.

[0012] Send the ZK60 magnesium alloy semi-continuous casting bar with a diameter of 178mm and a length of 2-3m into a hot shear furnace, undergo homogenization heat treatment at 400-420°C for 6-12h, cool down to 350-380°C with the furnace, and continue heating for 4- After 8 hours, cut the extruded blanks with a length of 400-600mm at the discharge port of the hot frying furnace, and enter the clamping mechanism of the peeling machine through the slideway. The material mechanism is directly fed into the backlog cylinder, and the secondary fusion mold (front-type mold) is used to extrude at high temperature, and the subsequent bar material repeats the above action to realize continuous extrusion processing of profile products without residual material.

Embodiment 3

[0014] For a hollow structure of 6063 or 6082 aluminum alloy profile, the wall thickness is 3mm, the diameter of the outer truncated circle is φ156mm, and the length is 10m.

[0015] Send the 6063 or 6082 aluminum alloy semi-continuous casting bar with a diameter of 178mm and a length of 2-3m into the hot shear furnace, heat it at 450-500°C for 4-8h, and cut it to 300-600mm at the outlet of the hot frying furnace The extruded blanks of length size enter the clamping mechanism of the peeling machine through the slideway, and after being peeled by the inverted tooth-shaped props of the peeling machine, the bright-surfaced bars are directly sent into the backlog barrel through the feeding mechanism, and the secondary fusion mold (front type mold), high-temperature extrusion forming, and the subsequent bar material repeats the above actions to realize continuous extrusion processing of profile products without residual material.

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Abstract

The invention discloses a processing technology for magnesium alloy and aluminum alloy sections, wherein a processing mode comprising the steps of hot shearing, hot peeling and front-located die no-residue extrusion is adopted. The processing technology has the advantages of overcoming the influence of heating and extrusion processing on the performance and the quality of the sections, shortening the extrusion time, increasing the extrusion efficiency, reducing the processing cost of the magnesium alloy and the aluminum alloy sections and obviously improving the economic benefit.

Description

technical field [0001] The invention belongs to the technical field of metal material processing, in particular to the machining of aluminum alloys and magnesium alloys. Background technique [0002] Magnesium, aluminum and other metals have small densities of 1.79 / cm3 and 2.79 / cm3 respectively, and are usually called light metals, and their corresponding magnesium alloys and aluminum alloys are called light alloys. Lightweight alloys such as magnesium alloys and aluminum alloys have many advantages such as high specific strength, high specific modulus, friendly biocompatibility, excellent process performance, easy cutting and recycling, and play an increasingly important role in modern industry , is considered to be the most potential "green material" for development and application in the 21st century. [0003] Extrusion of light alloy profiles such as magnesium alloys and aluminum alloys generally uses semi-continuous casting round bars as the original billet. The extru...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/00
Inventor 李永兵姜肇理宋如超张艳姝于建胜葛丽丽
Owner ADVANCED MFG TECH CENT CHINA ACAD OF MASCH SCI & TECH
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