Manufacturing process of aluminum-steel composite pipe with high thermal conductivity for petrochemical

A manufacturing process, high thermal conductivity technology, applied in manufacturing tools, metal processing equipment, metal wire drawing, etc., can solve the problem of insufficient rigidity and strength, and achieve the effect of prolonging life, saving aluminum, and improving heat dissipation efficiency.

Inactive Publication Date: 2013-10-30
常熟市异型钢管有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the aluminum tube used as a radiator also has certain defects, that is, the rigidity is not enough, and it has no effect when used for a short time, but it may cause some problems when used for a long time with a heavy load

Method used

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  • Manufacturing process of aluminum-steel composite pipe with high thermal conductivity for petrochemical
  • Manufacturing process of aluminum-steel composite pipe with high thermal conductivity for petrochemical

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Embodiment Construction

[0012] The following describes the technical solution of the present invention in detail through a best embodiment in conjunction with the accompanying drawings, but the protection scope of the present invention is not limited to the embodiment.

[0013] Such as figure 2 As shown, a manufacturing process of high thermal conductivity aluminum-steel composite pipe for petrochemical industry, the main materials include aluminum pipe 1 and steel pipe 2.

[0014] Such as figure 1 As shown, the aluminum pipe 1 and the steel pipe 2 are first pickled and dried. The specific expression is: when pickling the inner and outer surfaces of the aluminum pipe 1, dilute hydrochloric acid solution is used, the concentration range is 10% to 15%, and the temperature is 30- 40°C, acid wash for 8-10 minutes, put in 2% NaNO after flushing 3 Passivate the solution, then blow it off with compressed air, and dry it with steam; when pickling the steel pipe 2, use a dilute sulfuric acid solution with ...

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Abstract

The invention discloses a manufacturing process of an aluminum-steel composite pipe with high thermal conductivity for petrochemical. The adopted raw materials comprise an aluminum pipe and a steel pipe. The manufacturing process comprises the following steps: firstly, pickling and drying the aluminum pipe and the steel pipe; then, sleeving the aluminum pipe at the outside of the steel pipe, reserving a gap of 0.3-0.4 mm between the inside diameter of the aluminum pipe and the outside diameter of the steel pipe, simultaneously heating the aluminum pipe and the steel pipe through super audio induction coils, and firmly compounding the heads of the aluminum pipe and the steel pipe through a special head rolling machine; lubricating the aluminum pipe; finally, performing cold drawing through a speed drawing machine. Therefore, the produced aluminum-steel composite pipe not only has excellent heat conducting performance, and the rigidity is improved, meanwhile, the aluminum material is greatly saved and the heat dissipation efficiency is enhanced.

Description

technical field [0001] The invention relates to a production process of a composite pipe, in particular to a production process of a high thermal conductivity aluminum-steel composite pipe for petrochemical use. Background technique [0002] Composite tubes are more and more widely used in our life. Due to the particularity of the petrochemical industry, the heat pipes used for a long time are all aluminum tubes. Due to the high thermal conductivity of aluminum tubes, the heat dissipation effect is good. However, the aluminum tube used as a radiator also has certain defects, that is, the rigidity is not strong enough, and it has no effect when used for a short time, but it may cause some problems when used for a long time with a heavy load. Such a composite tube that requires the overall structural rigidity of the radiator to be strengthened and the service life of the radiator can be extended has become a common demand in the industry. [0003] Therefore, we continue to ex...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/06C23G1/08C23G1/12B21C1/22B21C19/00B21C9/00B21D41/00
Inventor 张根明殷正新
Owner 常熟市异型钢管有限公司
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