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Manufacturing method of 6A02T651 aluminum alloy seam pipe for air separators

A technology for air separation and manufacturing method, which is applied in the manufacture of 6A02T651Ф411×30 aluminum alloy slit pipe, and the manufacturing field of 6A02T651 aluminum alloy slit pipe for low-temperature oxygen and nitrogen air separators, which can solve the problems of unsuitable preparation methods, etc., To achieve the effect of reducing the waiting time of the process, small dimensional dispersion, and improving the aesthetic sense

Active Publication Date: 2014-10-29
SHANDONG YUHANG SPECIAL ALLOY EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current preparation method is not suitable for the 6A02T651 aluminum alloy seamed pipe, therefore, there is an urgent need for a method for manufacturing the seamed pipe for the air separator of the 6A02T651 aluminum alloy

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] a. The cast aluminum alloy is a six-series aluminum alloy round ingot, and the calculation of ingredients is based on the center line of step a to ensure that the composition of the ingot is controlled within the standard range; the slag is removed once after melting, and the slag is removed once after refining in the melting furnace 1. Slag removal once after refining in the holding furnace; degassing once after refining in the smelting furnace, degassing once after refining in the holding furnace, and degassing with a degasser after refining in the holding furnace. During the whole smelting and casting process, control the input of Fe content and try to avoid contact with iron during slag removal to reduce the adverse effect of iron on welding. The mass percentage of Si in the aluminum alloy ingot used is 1.05%, and Fe is ≤0.20%, Cu 0.52%, Mn or Cr 0.28%, Mg 0.81%, Zn ≤0.20%, Ti ≤0.15%, single impurity ≤0.05%, total impurity ≤0.15%, and the rest are Al; specifications ...

Embodiment 2

[0032] The difference between this embodiment and Example 1 is that the refining degree of the No. 6 aluminum alloy round ingot used in step a meets the requirement of primary oxide film, and other steps and parameters are the same as those of Example 1.

Embodiment 3

[0034] The difference between this embodiment and Example 1 is that the wool is homogeneous, the heating temperature is 540°C, and the temperature is kept for more than 12 hours. The oxide film is checked at low magnification, and the compound segregation is checked to meet the requirements of the primary oxide film. Other steps and parameters are the same as those in the example. 1 is the same.

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Abstract

The invention belongs to the technical field of aluminum alloy materials for air separators, in particular to a manufacturing method of a 6A02T651 aluminum alloy seam pipe for a low-temperature oxygen / nitrogen air separator, more particularly to a manufacturing method of a 6A02T651 (phi 411*30) aluminum alloy seam pipe. According to the manufacturing method, online quenching production of an ultralarge-diameter and large-wall-thickness seam pipe material for an air separator is realized; under the condition that the standard requirements are met, the labor productivity is raised, the cost is reduced and the ordering requirements of users are met.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy materials for air separators, and in particular relates to a method for manufacturing 6A02T651 aluminum alloy seamed pipes for low-temperature oxygen and nitrogen air separators, specifically a method for manufacturing 6A02T651Ф411×30 aluminum alloy seamed pipes. Background technique [0002] With the rapid development of global machinery manufacturing technology, new technologies, new materials, and new processes emerge in endlessly. The rapid development of various industries and the development of new products make the market demand for low-temperature oxygen and nitrogen air separators. Oxygen and nitrogen air separators must have the characteristics of high strength, good plasticity, and high specific strength. The working environment is low temperature, high pressure, and the ambient temperature changes frequently. The material is light, thin-walled, corrosion-resistant, and can be us...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/02C22F1/043B21C37/06
Inventor 王明亮王呈刚张建忠许辉
Owner SHANDONG YUHANG SPECIAL ALLOY EQUIP
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