Manufacturing process for aluminum alloy capillary tube

A production process and aluminum alloy technology, which is applied in the production process of aluminum alloy capillary tubes, can solve the problems of limited strength and service life, aluminum processing performance and use performance are not as good as copper, and pure aluminum has poor corrosion resistance, etc., so as to reduce production costs, Effect of saving copper resources and reducing weight

Active Publication Date: 2008-12-03
苏州宏太铜材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, the processing performance and use performance of aluminum are not as good as copper, and its strength and service life are limited.
And due to the poor corrosion resistance of pure aluminum, it cannot be used in places with corrosion
Practical aluminum or aluminum alloy capillaries cannot be produced by the usual process used to manufacture pure copper capillaries

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] The specific embodiment of the present invention is described below:

[0015] The capillary of the following size is made of aluminum alloy with the grade of 3003: height 2.7×1.1×900, among which: “high” represents the high-grade capillary in the national standard, 2.7 represents the outer diameter of the capillary is 2.7±0.03 mm, and 1.1 represents the inner diameter of the capillary is 1.1 ±0.02mm, 900 means the capillary length is 900±3.5mm. The above tolerances are the deviation range allowed by the national standard. The diameter of the tube blank is 8 mm and the wall thickness is 1.15 mm.

[0016] Drawing the capillary must go through four passes, and each pass includes the following steps:

[0017] (1) Inject the brand that Batoyle Freedom Group manufactures into the tube blank as the internal lubricating oil of Master Draw598;

[0018] (2) Put the floating core head matched with the outer mold in the tube blank.

[0019] (3) Make the head of the tube blank s...

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PUM

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Abstract

The invention discloses a production technology for an aluminum alloy capillary tube, which orderly comprises the following steps that: (1) an aluminum alloy tube blank is prepared, and inner lubricating oil is injected into the tube blank; (2) the tube blank is stretched, the stretching speed is between 70 and 80 meters/minute, and outer lubricating oil is uninterruptedly sprayed on the outer surface of the tube blank during the stretching process; and (3) the step (1) and the step (2) are repeated for 4 to 6 times. The production of the capillary tube by adopting aluminum alloy saves expensive copper resource and greatly reduces production cost. The specific gravity (2.70) of aluminum is only one third or so of the specific gravity (8.93) of copper, so the weight of the capillary tube can be greatly reduced.

Description

technical field [0001] The invention relates to a production process of an aluminum alloy capillary. Background technique [0002] The diameter of the capillary is very small, the inner diameter is only 0.5-0.3 mm, and the outer diameter is only 2.5-3.0 mm, so the processing is very difficult. Capillary tubes are usually made of copper because of its excellent processing and usability properties. However, the production cost of the copper capillary is high, and high-quality metal copper is a relatively expensive resource. [0003] In order to save costs, aluminum or aluminum alloys can be used instead of copper to make capillaries in some occasions, which can greatly reduce the cost of using capillaries and save relatively expensive copper resources. And since the specific gravity (2.70) of aluminum is only about 1 / 3 of the specific gravity (8.93) of copper, the weight of the capillary can be greatly reduced. [0004] However, the processability and use performance of alu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C1/22B21C9/00C22C21/00
Inventor 肖力畅
Owner 苏州宏太铜材有限公司
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