Plasticity machining method for metal composite pipe

A metal composite pipe and plastic processing technology, applied in the field of metal composite spinning, can solve the problems of easy stress release failure of metal composite pipe, long metallurgical composite production cycle, high operation requirements, etc., achieve high bonding strength, low production cost, Good process flexibility

Active Publication Date: 2017-05-17
JIANGSU UNIV OF TECH
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Problems solved by technology

[0006] In order to solve the problem that the metal composite pipe formed by hydraulic lamination and cold drawing lamination is prone to stress release failure, which leads to a narrow use range, and metallurgical lamination has the disadvantages of long production cycle and high operation requirements, the invention provides a plastic processing method for metal clad pipe

Method used

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  • Plasticity machining method for metal composite pipe

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specific example

[0044] Specific examples: (1) Select copper pipe and steel pipe, wherein the inner diameter of the copper pipe is Φ100mm, the wall thickness of the copper pipe is 0.6mm, the inner diameter of the steel pipe is Φ101.2mm, the wall thickness of the steel pipe is 1.8mm, and the copper pipe is 5mm longer than the steel pipe. The hole and the outer circle of the copper tube form an H8 / g7 fit.

[0045] (2) Carry out surface treatment: adopt the hydrochloric acid of mass percentage 10% to clean the inner surface of steel pipe and the outer surface of copper pipe, clean with clear water, then blow dry;

[0046](3) Use a steel wire throwing plate to roughen the outer surface of the copper pipe and the inner surface of the steel pipe respectively, then clean with acetone, and blow dry;

[0047] (4) The copper pipe penetrates into the steel pipe to form a composite pipe blank and is sleeved on the mandrel 2, and the bottom of the pipe wall of the copper pipe is used for positioning, and t...

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Abstract

The invention relates to a plasticity machining method for a metal composite pipe. A heating spinning method is adopted for conducting powerful spinning on an assembled composite pipe blank, a laser is used for conducting local heating on the composite pipe blank in the forming process, interface combination of an inner pipe body and an outer pipe body of the composite pipe blank is achieved under the joint action of the temperature and the large deformation, and a formed interface has high bonding strength. According to the provided plasticity machining method for the metal composite pipe, the production technology is simple, the machining efficiency is high, the technology stability is good, and the production cost is low.

Description

technical field [0001] The invention relates to the field of manufacturing metal composite pipes, in particular to a metal composite spinning forming method. Background technique [0002] The metal composite pipe combines two or more metal pipes with different properties and utilizes their respective advantages to form a metal composite pipe. Through the effective combination of electrical conductivity, thermal conductivity, corrosion resistance and mechanical properties, a single The performance requirements that metal pipes cannot meet can save resources and are cost-effective. Metal composite pipes have expanded the scope of use of materials, so they have been widely used in petrochemical and other fields. [0003] Commonly used metal composite pipe processing methods mainly include mechanical composite technology and metallurgical composite technology: mechanical composite technology is currently mainly divided into hydraulic composite and cold drawn composite, which is...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/15B21D22/16B23P15/00
CPCB21C37/154B21D22/16B23P15/00
Inventor 孙凌燕王江涛王健
Owner JIANGSU UNIV OF TECH
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