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6061 aluminum alloy bar production method capable of eliminating coarse grain rings

A production method and technology for aluminum alloys, applied in the field of aluminum alloy processing, can solve the problems of material physical properties decline, coarse-grained rings, etc., and achieve the effects of improving mechanical properties, promoting coarse-grained rings, and reducing use risks

Pending Publication Date: 2021-04-30
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The present invention aims to solve the technical problem that the existing 6061 aluminum alloy rod production process often has coarse crystal rings during extrusion, resulting in a significant decline in the physical properties of the material, and provides a production method for 6061 aluminum alloy rods that eliminates the coarse crystal rings

Method used

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Effect test

specific Embodiment approach 1

[0016] Specific implementation mode one: a kind of production method of 6061 aluminum alloy bar material that eliminates coarse crystal ring, concretely carries out according to the following steps:

[0017] 1. According to the mass percentage of elements: Si: 0.4% ~ 0.8%, Fe: 0.7%, Cu: 0.15% ~ 0.40%, Mn: 0.08% ~ 0.12%, Mg: 0.8% ~ 1.2%, Cr: 0.04 %~0.35%, Zn≤0.25%, Ti:≤0.15%, single impurity≤0.05%, total impurity≤0.15% and the balance Al are melted and casted to obtain aluminum alloy ingots; the raw materials are pure aluminum ingots and pure magnesium Ingots, aluminum-titanium master alloys, aluminum-silicon master alloys, aluminum-iron master alloys, cathode copper, aluminum-chromium master alloys, aluminum-manganese master alloys and zinc ingots;

[0018] 2. Heating the aluminum alloy ingot obtained in step 1, controlling the heating temperature of the induction furnace to be 490-530° C., and the heating time to be 1-30 minutes;

[0019] 3. Heat the mold to 450-500°C, heat ...

specific Embodiment approach 2

[0023] Embodiment 2: This embodiment differs from Embodiment 1 in that: in step 1, the casting temperature is 710-750° C., and the casting speed is 25-95 mm / min. Others are the same as the specific implementation one.

specific Embodiment approach 3

[0024] Embodiment 3: This embodiment differs from Embodiment 1 or Embodiment 2 in that: in step 2, the heating temperature is controlled to 510° C., and the heat treatment is 10 minutes. Others are the same as the specific implementation 1 or 2.

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Abstract

The invention discloses a 6061 aluminum alloy bar production method capable of eliminating coarse grain rings, and relates to the technical field of aluminum alloy machining. The technical problem that in an existing 6061 aluminum alloy bar production process, coarse grain rings frequently appear in the extrusion process, and consequently the physical performance of materials is obviously reduced is solved. The method comprises the steps of cast ingot casting, cast ingot heating, an extrusion process, bar quenching, stretching straightening and bar artificial aging. The aluminum alloy product extruded by the method has no coarse grain ring structure defect, various performance indexes meet the standard requirements, the mechanical property of the material is improved, the bearing capacity, the service life and the use safety of the material are improved, and the use risk of the material is reduced. The method is used for preparing 6061 aluminum alloy bars.

Description

technical field [0001] The invention relates to the technical field of aluminum alloy processing. Background technique [0002] 6061 aluminum alloy belongs to Al-Mg-Si alloy, which has good plasticity and high temperature performance. In the extrusion of 6061 aluminum alloy rods, coarse crystal rings often appear, which will cause a significant decrease in the physical properties of the material, affect the normal use of the material, and cause use risks. [0003] In view of the above problems, it is necessary to optimize and improve the process of 6061 aluminum alloy rods to avoid the occurrence of structural defects such as coarse grain rings, meet user standards, improve the physical performance level of the material, and also have good economic benefits. Contents of the invention [0004] The present invention aims to solve the technical problem that the existing 6061 aluminum alloy rod production process often has coarse crystal rings during extrusion, resulting in a...

Claims

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Application Information

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IPC IPC(8): C22C21/08C22C1/03C22F1/047
CPCC22C1/026C22C1/03C22C21/08C22F1/002C22F1/047
Inventor 杨瑞青王强于峰满正良石钰谭艺哲刘海涛张骊珠
Owner NORTHEAST LIGHT ALLOY CO LTD
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