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A continuous rolling metal composite pipe manufacturing process

A technology of metal composite pipe and manufacturing process, which is applied in the field of metal manufacturing technology and can solve the problem of unequal inner diameter

Active Publication Date: 2018-03-13
LIAONING PETROLEUM EQUIP INST +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In actual production, the inner diameter of the two ends of the hot-rolled tube may be different due to the temperature drop, which can be solved by properly setting the power frequency heating

Method used

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  • A continuous rolling metal composite pipe manufacturing process
  • A continuous rolling metal composite pipe manufacturing process
  • A continuous rolling metal composite pipe manufacturing process

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Embodiment Construction

[0009] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0010] Such as figure 1 , figure 2 , image 3 as shown, figure 2 It is a schematic diagram of inserting the prefabricated special alloy steel liner 2 into the red hot steel pipe 1, image 3 It is a schematic diagram of the final rolling mill, rolled to the standard specification of the steel pipe, and made into a composite pipe.

[0011] In the above two thermal lining composite processes:

[0012] Process one is simpler and has the lowest cost. The thicker the steel pipe wall, the larger the diameter reduction and the stronger the bond. The key to the process is to accurately calculate the inner diameter of the heat pipe and the cooling shrinkage diameter according to the inner diameter and wall thickness of the steel pipe, and refine the special alloy steel liner 2.

[0013] The second process, lining and continuous rolling...

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Abstract

The invention discloses a continuous rolling metal composite pipe manufacturing process. The product includes an outer pipe and an inner liner pipe. The outer pipe is generally a relatively thick steel pipe. The lining pipe is a thin-walled pipe of stainless steel or special alloy compounded on the inner wall of the steel pipe. The present invention is realized through two technical approaches. One is the thermal expansion and contraction composite process, and the other is the hot-piercing and rail-connecting composite process. The feature of this process is that it can be realized on the steel rolling production line of the steel plant without additional equipment. The production is simple, the cost is low, and the economic significance of promotion it is good.

Description

technical field [0001] The invention relates to the technical field of metal production technology, in particular to a continuous rolling metal composite pipe production process. Background technique [0002] In order to solve the problems of corrosion, fouling and wax deposition on the inner wall of the pipeline during the process of studying the fluid transmission in the pipeline, various technical methods are used in the industry to treat the inner wall of the pipe. Technologies such as inner coating (organic chemical coating), electroless plating, inner glass lining and stainless steel inner lining are widely used now. The internal treatment technologies of the above-mentioned various pipes are all secondary processing of the finished pipes from the steel factory. For example, the stainless steel-lined composite pipe is to penetrate the stainless steel liner into the steel pipe, and combine the stainless steel liner to the inner wall of the steel pipe through explosion,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C37/06
Inventor 潘德岐戴克文郭胜
Owner LIAONING PETROLEUM EQUIP INST