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Welding aluminum alloy sheet for railway motor train set with two hundred kilometers per hour and manufacturing method

A technology of an aluminum alloy sheet and a manufacturing method, applied in the field of aluminum alloy sheet and its manufacturing, can solve the problems of high cost, heavy vehicle body weight, etc., and achieve the effects of weight reduction, weight reduction, and strong guidance

Active Publication Date: 2009-06-17
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem that stainless steel plates are used in the railway EMUs with a speed of 200 kilometers per hour, and the weight of the car body is relatively heavy and the cost is high. method

Method used

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specific Embodiment approach 1

[0006] Specific implementation mode 1: The (Al-Zn-Mg) weldable aluminum alloy sheet for the 200-kilometer-per-hour railway EMU in this embodiment consists of Si≤0.30%, Fe≤0.35%, Cu≤0.20%, and Mn by weight percentage: 0.20~0.70%, Mg: 1.00~2.00%, Cr≤0.30%, Zn: 4.00~5.00%, Ti≤0.20%, Zr≤0.25%, V≤0.10%, single impurity≤0.05%, total impurity≤0.15% and the balance of Al.

specific Embodiment approach 2

[0007] Specific embodiment 2: The weldable aluminum alloy sheet for the 200-kilometer-per-hour railway EMU in this embodiment consists of Si: 0.19%, Fe: 0.34%, Cu: 0.19%, Mn: 0.30-0.60%, Mg: 1.90%, Cr: 0.29%, Zn: 4.10-4.90%, Ti: 0.19%, Zr: 0.24%, V: 0.09%, single impurity: 0.04%, total impurity: 0.14%, and the balance of Al.

specific Embodiment approach 3

[0008] Specific embodiment three: The weldable aluminum alloy sheet for the 200-kilometer-per-hour railway EMU in this embodiment consists of Si: 0.18%, Fe: 0.33%, Cu: 0.18%, Mn: 0.40-0.50%, Mg: 1.80%, Cr: 0.28%, Zn: 4.20-4.80%, Ti: 0.18%, Zr: 0.23%, V: 0.08%, single impurity: 0.04%, total impurity: 0.13% and the balance of Al.

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Abstract

The invention discloses a weldable aluminum alloy plate for a railway motor train unit with the speed of 200km per hour and a manufacturing method and relates to an aluminum alloy plate and the manufacturing method thereof. The invention aims at solving the problems of heavy car body and high cost caused by the use of stainless steel plates in the railway motor train unit with the speed of 200km per hour currently. The plate comprises the following compositions by weight percent: 0.30% of Si, 0.35% of Fe, 0.20% of Cu, 0.20-0.70% of Mn, 1.00-2.00% of Mg, 0.30% of Cr, 4.00-5.00% of Zn, 0.20% of Ti, 0.25% of Zr, 0.10% of V and the balance of Al. The method comprises the following steps: setting the solid-melting treatment temperature between 468 and 472 DEG C; pre-stretching a thick plate for 60 to 90 minutes, and cold quenching in the water with the temperature below 34 DEG C. The plate has a tensile strength not smaller than 315N / mm<2>, a disproportionate extension strength not smaller than 195N / mm<2>, a simple process and a high qualified rate of products.

Description

technical field [0001] The invention relates to an aluminum alloy plate and a manufacturing method thereof. Background technique [0002] Most of the existing railway passenger cars are made of steel plates or stainless steel plates. The 200-kilometer-per-hour railway EMUs are now made of stainless steel plates, which have the disadvantages of heavy weight and high cost. Contents of the invention [0003] The purpose of the present invention is to solve the problem that stainless steel plates are used in the railway EMUs with a speed of 200 kilometers per hour, and the weight of the car body is relatively heavy and the cost is high. method. The weldable aluminum alloy sheet for the 200-kilometer-per-hour railway EMU of the present invention is composed of Si≤0.30%, Fe≤0.35%, Cu≤0.20%, Mn: 0.20-0.70%, Mg: 1.00-2.00%, Cr≤ 0.30%, Zn: 4.00~5.00%, Ti≤0.20%, Zr≤0.25%, V≤0.10%, single impurity≤0.05%, total impurity≤0.15% and the balance made of Al. The manufacturing method of...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22F1/053
Inventor 吕新宇杨志强李念奎冯正海罗建华师雪飞魏继承
Owner NORTHEAST LIGHT ALLOY CO LTD
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