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A kind of 5182-o state aluminum alloy sheet material and production method thereof for automobile inner panel

A technology of aluminum alloy plate and production method, which is applied in the direction of metal rolling, etc., can solve the problems of uniform and limited grain size, easy occurrence of orange peel defects, poor surface quality, etc., and achieve fast heating speed, uniform and fine surface, The effect of temperature uniformity

Active Publication Date: 2021-05-18
河南明晟新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems caused by the traditional annealing method, such as the uniformity and fineness of the crystal grains, the poor surface quality after annealing, and the easy occurrence of orange peel defects during stamping, the present invention provides a stable performance, uniform internal structure, good processing plasticity and 5182-O aluminum alloy sheet with no orange peel pattern after stamping and high strength, suitable for stamping inner panels of automobile panels

Method used

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  • A kind of 5182-o state aluminum alloy sheet material and production method thereof for automobile inner panel

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A kind of production method of 5182-O state aluminum alloy sheet material for automobile interior plate, comprises the following steps:

[0035] Step 1: Ingredients:

[0036] Raw materials are prepared according to the following weight percentages: Si 0.128%, Fe 0.174%, Cu 0.013%, Mn 0.247%, Mg 4.570%, Cr 0.037%, Zn 0.025%, Ti 0.024%, and the balance is Al.

[0037] Step 2: Melting and Casting:

[0038] Smelting the mixed metal at 700°C-750°C for 5-8 hours, standing and refining as usual, degassing, adding grain refiner Al-5Ti-1B wire, filtering, and measuring the hydrogen content in the launder ≤0.12mL / 100gAL; then casting at 700℃~730℃ by semi-continuous casting method, the casting speed is 45~55mm / min, and the ingot size is determined according to the actual width of the product.

[0039]Step 3: Homogenizing heat treatment:

[0040] The ingot is subjected to a homogenization heat treatment at 500°C to 520°C for a holding time of 12 to 14 hours. After cooling, it i...

Embodiment 2

[0053] A kind of production method of 5182-O state aluminum alloy sheet material for automobile interior plate, comprises the following steps:

[0054] Step 1: Ingredients:

[0055] Raw materials are prepared according to the following weight percentages: Si 0.120%, Fe 0.205%, Cu 0.015%, Mn 0.252%, Mg 4.623%, Cr 0.038%, Zn 0.023%, Ti 0.027%, and the balance is Al.

[0056] Step 2: Melting and Casting:

[0057] Smelting the mixed metal at 700°C-750°C for 5-8 hours, standing and refining as usual, degassing, adding grain refiner Al-5Ti-1B wire, filtering, and measuring the hydrogen content in the launder ≤0.12mL / 100gAL; then casting at 700℃~730℃ by semi-continuous casting method, the casting speed is 45~55mm / min, and the ingot size is determined according to the actual width of the product.

[0058] Step 3: Homogenizing heat treatment:

[0059] The ingot is subjected to a homogenization heat treatment at 500°C to 520°C for a holding time of 12 to 14 hours. After cooling, it ...

Embodiment 3

[0071] Raw materials are prepared according to the following weight percentages: Si 0.142%, Fe 0.252%, Cu 0.015%, Mn 0.272%, Mg 4.831%, Cr 0.042%, Zn 0.024%, Ti 0.031%, and the balance is Al.

[0072] Step 2: Melting and Casting:

[0073] Smelting the mixed metal at 700°C-750°C for 5-8 hours, standing and refining as usual, degassing, adding grain refiner Al-5Ti-1B wire, filtering, and measuring the hydrogen content in the launder ≤0.12mL / 100gAL; then casting at 700℃~730℃ by semi-continuous casting method, the casting speed is 45~55mm / min, and the ingot size is determined according to the actual width of the product.

[0074] Step 3: Homogenizing heat treatment:

[0075] The ingot is subjected to a homogenization heat treatment at 500°C to 520°C for a holding time of 12 to 14 hours. After cooling, it is machined, and the head and tail are cut and face milled.

[0076] Step 4: Hot rolling:

[0077] Heat the ingot to 480°C-510°C, keep it warm for more than 3 hours, and perfo...

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Abstract

The invention relates to a 5182-O state aluminum alloy plate for automobile inner panels, which is composed of the following raw materials in weight percentage: Si 0.1-0.15%, Fe 0.15-0.3%, Cu≤0.03%, Mn 0.2-0.4%, Mg4. 5~4.9%, Cr0.03~0.07%, Zn≤0.1%, Ti 0.015~0.04%, and the balance is Al. Production method: batching; smelting and casting; ingot homogenization heat treatment, machining face milling; hot rolling; cold rolling; continuous complete annealing of finished products, the temperature in the annealing furnace is 420 ℃ ~ 480 ℃, the aluminum alloy strip is in the annealing furnace The internal speed is 10 ~ 20m / min; tension bending straightening cleaning, tension straightening plate shape; flying shearing sheet. The aluminum alloy plate in the 5182-O state of the present invention has stable performance, uniform internal structure, good processing plasticity, no orange peel texture after stamping, and high strength.

Description

technical field [0001] The invention relates to the field of metal manufacturing, in particular to a 5182-O state aluminum alloy plate for automobile inner panels and a production method thereof. Background technique [0002] Traditional automotive materials are mostly processed by deep-drawn steel sheets. In recent years, with the development of automotive lightweight technology, the degree of aluminum alloying of auto parts is increasing day by day. Taking plates as an example, the application of aluminum alloy plates in automobiles is mainly divided into outer panels and inner panels. As the automobile industry pays more and more attention to the beautiful appearance and smooth lines of the car body, all of these need to be realized by stamping, which has extremely high requirements on the forming performance of the material. As far as the outer and inner panels of the car are concerned, the strength and stiffness of the components are mainly provided by the inner panels...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/08C22C1/02C22C1/06C22F1/047B21B3/00
CPCB21B3/00B21B2003/001C22C1/026C22C1/06C22C21/08C22F1/047
Inventor 宋喜波李克振柴明科李坤朋
Owner 河南明晟新材料科技有限公司
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