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5182-O state aluminum alloy plate for automobile inner plate and production method for 5182-O state aluminum alloy plate

An aluminum alloy sheet and production method technology, applied in metal rolling and other directions, can solve the problems of easy occurrence of orange peel defects, poor surface quality, uniform grain size and limited fineness, etc., and achieves fast heating speed, uniform temperature, surface Even and delicate effect

Active Publication Date: 2019-07-09
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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  • 5182-O state aluminum alloy plate for automobile inner plate and production method for 5182-O state aluminum alloy plate

Examples

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] The mixed metals are smelted at 700°C to 750°C for 5 to 8 hours, and the standing refining is carried out as usual, except

[0039] Gas, add grain refiner Al-5Ti-1B wire, filter, and measure the hydrogen content in the launder ≤0.12mL / 100gAL; then cast at 700℃~730℃ by semi-continuous casting method, casting speed 45~55mm / min, the size of the ingot depends on the actual width of the product.

[0040] Step 3: Homogenizing heat treatment:

[0041] 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 cooli...

Embodiment 2

[0054] A kind of production method of 5182-O state aluminum alloy sheet material for automobile interior plate, comprises the following steps:

[0055] Step 1: Ingredients:

[0056] 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.

[0057] Step 2: Melting and Casting:

[0058] 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.

[0059] Step 3: Homogenizing heat treatment:

[0060] 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

[0072] 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.

[0073] Step 2: Melting and Casting:

[0074] The mixed metals are smelted at 700°C to 750°C for 5 to 8 hours, and the standing refining is carried out as usual, except

[0075] Gas, add grain refiner Al-5Ti-1B wire, filter, and measure the hydrogen content in the launder ≤0.12mL / 100gAL; then cast at 700℃~730℃ by semi-continuous casting method, casting speed 45~55mm / min, the size of the ingot depends on the actual width of the product.

[0076] Step 3: Homogenizing heat treatment:

[0077] 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.

[0078] Step 4: Hot rolling:

[0079] Heat the ingot to 480°C-510°C, keep it warm for more than 3 hours, ...

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Abstract

The invention relates to a 5182-O state aluminum alloy plate for an automobile inner plate. The 5182-O state aluminum alloy plate comprises the following raw materials in weight percentage: 0.1-0.15%of Si, 0.15-0.3% of Fe, no more than 0. 03% of Cu, 0.2-0.4% of Mn, 4.5-4.9% of Mg, 0.03-0.07% of Cr, no more than 0.1% of Zn, 0.015-0.04% of Ti and the balance Al. The production method comprises thesteps of batching; smelting and casting; ingot homogenizing heat treatment and milling surface machining; hot rolling; cold rolling; continuous and complete annealing of the finished product, wherein,the annealing furnace temperature is 420-480 DEG C, and the speed of the aluminum alloy strip in the furnace is 10-20 m / min; tension leveling line washing and withdrawing-straightening plate shape; and flying shear slicing. According to the 5182-O state aluminum alloy plate, the properties are stable, the internal texture is uniform, the machining plasticity is high, the orange peel line after stamping does not exist, and the strength is high.

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 Applications(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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