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Corrosion-resisting weldable aluminum alloy board for box tank car and manufacturing method of board

A technology of aluminum alloy sheet and manufacturing method, which is applied in the corrosion-resistant and weldable aluminum alloy sheet for tank trucks and its manufacturing field, can solve the problems of low mechanical strength, welding performance and corrosion resistance of aluminum alloy sheet, and achieve comprehensive mechanical properties Excellent, good formability, energy saving effect

Active Publication Date: 2017-11-24
NORTHEAST LIGHT ALLOY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of low mechanical strength, welding performance and corrosion resistance of the aluminum alloy plate, the present invention provides a corrosion-resistant weldable aluminum alloy plate for tank trucks and a manufacturing method thereof

Method used

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Examples

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Comparison scheme
Effect test

specific Embodiment approach 1

[0023] Embodiment 1: A corrosion-resistant and weldable aluminum alloy plate for tank trucks according to this embodiment is composed of 0.10% to 0.4% of Cu, 0.25% to 0.55% of Mn, 1.5% to 2.0% of Mg, 5.0% % to 5.6% of Zn, 0.15% to 0.45% of Er and the rest of Al.

specific Embodiment approach 2

[0024] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that a corrosion-resistant weldable aluminum alloy plate for tank trucks is composed of 0.23% Cu, 0.38% Mn, 1.7% Mg, 5.3% The composition of Zn, 0.2% Er and the balance Al. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0025] Specific implementation mode three: a method for manufacturing a corrosion-resistant weldable aluminum alloy plate for tank trucks according to this implementation mode is carried out in the following steps:

[0026] 1. Weighing raw materials: according to the mass fraction of each element in the corrosion-resistant weldable aluminum alloy sheet for tank trucks: 0.10% to 0.4% of Cu, 0.25% to 0.55% of Mn, 1.5% to 2.0% of Mg, 5.0% ~5.6% of Zn, 0.15%~0.45% of Er and the balance of Al weigh aluminum-copper master alloy, aluminum-manganese master alloy, metal magnesium, metal zinc, aluminum-erbium master alloy and aluminum ingot for later use;

[0027] 2. Preparation of aluminum alloy melt: Add the aluminum ingot weighed in step 1 into the resistance reverberatory furnace, then add aluminum-manganese master alloy and aluminum-copper master alloy, add flux I to cover, and the amount of flux I added is based on the amount of aluminum-manganese master alloy and The total mass o...

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Abstract

The invention relates to a corrosion-resisting weldable aluminum alloy board for a box tank car and a manufacturing method of the board. The board comprises materials including, by mass percent, 0.10 to 0.4% of Cu, 0.25 to 0.55% of Mn, 1.5 to 2.0% of Mg, 5.0 to 5.6% of Zn, 0.15 to 0.45% of Er and the balance Al. The method comprises steps of firstly, raw material weighing, secondly, aluminum melt preparing, thirdly, semi-continuous casting, fourthly, annealing, fifthly, rolling, sixthly, quenching, seventhly, straightening and eighthly, aging. The board surface quality is good, the combination mechanical property is excellent, the welding coefficient reaches 77%, and the welding coefficient is higher than that of an existing conventional heat-treatable hardening aluminum alloy, the tensile strength is not smaller than 443 MPa, the percentage elongation after fracture is not smaller than 3%, welding and machining forming performance is good, and post processing is facilitated.

Description

technical field [0001] The invention relates to a corrosion-resistant and weldable aluminum alloy plate for tank trucks and a manufacturing method thereof. Background technique [0002] At present, the tank trucks used for transporting hazardous chemicals such as asphalt, methanol, and ethylene glycol are made of 6mm steel plates and weigh about 4 tons. Because the country has clear regulations on the total weight of transport vehicles, the loading capacity of steel tank trucks is limited and transportation costs increase. [0003] The aluminum alloy material is used to make the tank body, which can reduce the weight by more than 50%, that is, increase the loading capacity by about 2 tons, and significantly reduce the transportation cost. When choosing aluminum alloy, the existing conventional weldable aluminum alloy has low strength after welding, and the weight reduction effect is not obvious after finite element simulation. The market demand for aluminum alloy plates wi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/10C22C1/03C22F1/053
CPCC22C1/026C22C1/03C22C21/10C22F1/053
Inventor 刘世雷王国军徐涛吕建伟丛福官王金花高新宇贾宁张辉玲佟有志
Owner NORTHEAST LIGHT ALLOY CO LTD
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