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Production technology of iron white copper and red copper composite pipe

A production process, a technology of iron white copper, applied in the direction of pipes, rigid pipes, pipeline protection, etc., can solve the problem of lack of heat exchange effect, and achieve the effect of increasing heat exchange effect, reducing manufacturing cost and good heat exchange performance.

Inactive Publication Date: 2020-11-06
江苏隆达超合金股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In chemical equipment, there is a need for a corrosion-resistant heat exchange tube with good corrosion resistance on the outer surface and good heat transfer performance on the inner surface. The original B Fe30-1-1 pipe has good corrosion resistance but the heat transfer effect is not as good as T2: in At 20°C, the thermal conductivity of BFe30-1-1 is 29 / W·(m·K) -1 , the thermal conductivity of T2 is 380 / W•(m•K)-1

Method used

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  • Production technology of iron white copper and red copper composite pipe
  • Production technology of iron white copper and red copper composite pipe

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] Finished product specification outer diameter*wall thickness*length=φ16*1.5*6000mm, the wall thickness of BFe30-1-1 is required to be 1.15±0.05mm.

[0022] The purpose of the present invention is to overcome the above disadvantages and provide a production technology of iron-nickel copper and red copper composite pipe according to the technical solution provided by the present invention. In this embodiment, the iron-nickel copper is BFe30-1-1, and the red copper is T2.

[0023] Proceed as follows:

[0024] 1) On the XB-450 / 150 type horizontal continuous casting furnace, BFe30-1-1 with outer diameter φ102*inner diameter φ60mm and T2 hollow ingot with outer diameter φ60*inner diameter φ38mm were cast respectively, with a length of 15 meters; chemical composition According to the corresponding brand ratio of GB5231;

[0025] 2) Mill the outer surface of the above hollow ingot so that the outer diameter of T2 is φ58.5mm and the outer diameter of BFe30-1-1 is φ100mm, and th...

Embodiment 2

[0032] Finished product specification outer diameter*wall thickness*length=φ12.7*1.25mm*LWC, the wall thickness of BFe30-1-1 is required to be 0.95±0.05mm.

[0033] A kind of production technology of BFe30-1-1 and T2 composite pipe according to the technical scheme provided by the present invention, the steps are as follows:

[0034] 1) On the XB-450 / 150 type horizontal continuous casting furnace, BFe30-1-1 with outer diameter φ98*inner diameter φ60mm and T2 hollow ingot with outer diameter φ60*inner diameter φ41mm were cast respectively, with a length of 20 meters; chemical composition According to the corresponding brand ratio of GB5231;

[0035] 2) Mill the outer surface of the above hollow ingot so that the outer diameter of T2 is φ58.5mm, the outer diameter of BFe30-1-1 is φ96mm, and the T2 hollow ingot is set on the BFe30-1-1 hollow ingot In the ingot, the two are aligned and welded to one end face, and the inner layer of BFe30-1-1 and the outer end face of T2 are respe...

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Abstract

The invention relates to a production technology of an iron white copper and red copper composite pipe, mainly aims at the production technology of a corrosion-resistant heat exchange pipe with good corrosion resistance on the outer surface and good heat exchange performance on the inner surface of the composite pipe, and belongs to the technical field of alloy pipe preparation. The production technology comprises the steps of respectively and horizontally connecting cast iron white copper and red copper hollow pipes; respectively milling the outer surfaces; sleeving and welding one end surface; carrying out planetary rolling; carrying out coil drawing; carrying out combined drawing and on-line flaw detection; carrying out cleaning and finishing; and carrying out annealing, packaging and warehousing. According to the production technology, copper and copper alloy pipes with two different grades are installed in a sleeving mode on the basis that the iron white copper and the red copperare produced by the traditional process, and the copper and copper alloy pipes are subjected to planetary rolling so as to generate intermetallic molecular interpenetration welding, so that the corrosion-resistant heat exchange pipe with good corrosion resistance on the outer surface and good heat exchange performance on the inner surface required by a heat exchanger of chemical equipment is wellproduced.

Description

technical field [0001] The invention relates to the technical field of alloy pipe preparation, in particular to a production process of iron-nickel-nickel copper and red copper composite pipe. Background technique [0002] BFe30-1-1 has good corrosion resistance in seawater, fresh water and steam; at the same time, it has excellent weldability and cold and hot processing performance, and is widely used in petrochemical, aerospace and shipbuilding industries; Excellent thermal processing performance is used in various heat exchangers in various industries. In chemical equipment, there is a need for a corrosion-resistant heat exchange tube with good corrosion resistance on the outer surface and good heat transfer performance on the inner surface. The original B Fe30-1-1 pipe has good corrosion resistance but the heat transfer effect is not as good as T2: in At 20°C, the thermal conductivity of BFe30-1-1 is 29 / W·(m·K) -1 , the thermal conductivity of T2 is 380 / W•(m•K)-1. The...

Claims

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Application Information

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IPC IPC(8): B23P15/00C21D1/26C21D9/08F16L9/02F16L58/08
CPCB23P15/00C21D1/26C21D9/08F16L9/02F16L58/08
Inventor 周向东浦益龙
Owner 江苏隆达超合金股份有限公司