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Production method for improving elongation of 3004 alloy annealed product

A technology of annealed state and production method is applied in the production field of improving the elongation rate of 3004 alloy annealed state products, which can solve the problem that the elongation rate of the 3004 alloy base metal cannot meet the requirements, and achieve the effect of improving deep drawing processing performance and easy processing.

Inactive Publication Date: 2021-04-27
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to solve the problem that the elongation of the existing 3004 alloy base material cannot meet the requirements, and to provide a production method for improving the elongation of the annealed 3004 alloy product

Method used

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach 1

[0016] Embodiment 1: In this embodiment, a production method for improving the elongation rate of products in the annealed state of 3004 alloy is realized according to the following steps:

[0017] 1. Soak heating and hot rolling of ingot

[0018] Soak the 3004 alloy ingot. When the material temperature reaches 605-615°C, keep it for 20-22 hours to complete the ingot soaking; then set the heating temperature of the heating furnace to 480°C, keep it for 2-5 hours, and roll it out of the furnace The temperature is controlled at 440°C to 480°C, and then hot rolling is started until the thickness is 5.0mm;

[0019] 2. Cold rolling

[0020] The hot-rolled 3004 alloy product is cold-rolled, and the cold-rolling machine undergoes 4 to 6 passes to roll the thickness of the finished product, and the last two passes are continuously rolled, and the final rolling temperature is ≥130°C;

[0021] 3. Annealing

[0022] Put the cold-rolled 3004 alloy product into a box-type resistance fur...

specific Embodiment approach 2

[0027] Embodiment 2: This embodiment is different from Embodiment 1 in that: when the material temperature reaches 610° C. in step 1, keep it for 21 hours. The specific embodiment one is the same.

specific Embodiment approach 3

[0028] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that: Step 1 uses a hot finishing mill for hot rolling, three passes of rolling, and the final rolling temperature of the hot rolling is controlled at 320-350°C. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention discloses a production method for improving the elongation of a 3004 alloy annealed product, and relates to a production method for improving the elongation of a 3004 alloy annealed product. The production method aims to solve the problem that the elongation of existing 3004 alloy base metal cannot meet the requirement. The method comprises the steps of firstly, cast ingot soaking and heating and hot rolling, secondly, cold rolling and thirdly, annealing. According to the method, the elongation of the annealed product is increased by 5% or above through the methods of increasing the homogenizing temperature of a 3004 alloy cast ingot, controlling the total cold rolling processing rate to be larger than or equal to 80%, controlling the annealing temperature and the like. The method is applied to the field of 3004 alloy production.

Description

technical field [0001] The invention relates to a production method for improving the elongation rate of products in the annealed state of 3004 alloy. Background technique [0002] The application of 3004 aluminum alloy strips is widely used in various industries such as decoration, packaging, construction, transportation, electronics, aviation, aerospace, weapons, etc. Aluminum is used in aircraft skins, fuselage frames, etc. [0003] The 3004 alloy annealed product has good deep drawing performance and is widely used in automobile heat insulation and heat exchange and curtain wall decoration. With the continuous improvement of technology, the requirements for 3004 alloy base material for deep drawing are getting higher and higher, so high elongation is constantly required to solve the problem of punching cracking. Contents of the invention [0004] The purpose of the invention is to solve the problem that the elongation of the existing 3004 alloy base material cannot me...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/04C22F1/047
CPCC22F1/04C22F1/047
Inventor 徐宏大韩冰张强万旭刘玉龙赵国奇邱大伟张雪濛
Owner NORTHEAST LIGHT ALLOY CO LTD
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