In-line destresing process and apparatus for Cu-alloy pipe wire

A treatment method and a treatment device technology, which are applied in the production of copper alloy continuous casting and rolling pipes and wires, on-line stress relief treatment methods and special devices for copper alloy pipes and wires, and can solve the problem of limited space in annealing furnaces, small equipment footprints, and problems in annealing Low efficiency and other problems, achieve continuous high-efficiency online annealing, ensure continuous production process, and fast annealing treatment

Inactive Publication Date: 2004-10-20
GOLDEN DRAGON PRECISE COPPER TUBE GROUP
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  • Abstract
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AI Technical Summary

Problems solved by technology

The advantage of this method is that it can match the continuous production of pipes and wires, realize large-scale and high productivity, and can apply gas protection devices; the disadvantage is that the pipes and wires need to be coiled, the annealing efficiency is low, and the equipment takes up a lot of space Big
The advantage of the box-type discontinuous annealing method is that the equipment occupies less space, the production is flexible, and it can organize miniaturization and discontinuous production; chemical production
The advantages of the electric heating semi-continuous annealing method are high annealing efficiency, small equipment footprint, and high flexibility; its disadvantages are that it is not suitable for processing too long pipelines, extremely thin-walled tubes, and extremely thin wires, and it is difficult to apply gas protection measures

Method used

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  • In-line destresing process and apparatus for Cu-alloy pipe wire
  • In-line destresing process and apparatus for Cu-alloy pipe wire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 25

[0022] 1) The pipe and wire 3 coming out of the rolling or drawing area first enters the heating zone 1 of the special device, and the heating is divided into two stages: first enters the heating stage, the copper alloy pipe and wire 3 is heated under the action of the induction coil 11, Rapidly heat up to the temperature range of stress relief annealing at a rate of 50°C / s (300°C in this embodiment), the power of the first group of induction coils 11 is controlled in the range of 15-50kW, and the frequency is controlled in the medium-high frequency range of 5-50kHz Induction coil (power 35kW, frequency 15kHz in this embodiment); then enter the constant temperature stage, keep warm at a uniform temperature, and in the constant temperature stage induction coil 11 adopts a medium and high frequency induction coil, its power is all controlled in the range of 15 ~ 40kW, and the frequency is controlled at 5 ~50kHz range (this embodiment 25kW, frequency 15kHz);

[0023] 2) Then the ...

Embodiment 2

[0031] The difference from Example 1 is:

[0032] In the present invention, gas protection (argon or nitrogen, etc.) can be applied while heating, and argon protection is applied in this embodiment; the induction coils 11 can be 3 to 6 groups.

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Abstract

A process for in-line stress removal of Cu-alloy tube or wire includes such steps as rolling or drawing to obtain tube or wire, heating by a special apparatus for annealing, holding the temp.; then cooling to 50-100 deg.C by air, and finally liquid cooling to quickly lower temp. to carling temp.. Its advantages are high effect and no oxidizing.

Description

technical field [0001] The invention relates to the preparation technology of copper alloy pipes, in particular to an online stress relief treatment method and special device for copper alloy pipes and wires, especially suitable for the production of copper alloy continuous casting and rolling pipes and wires. Background technique [0002] Because of its good corrosion resistance and high strength, copper alloy pipes are widely used in industries such as condensers for power generation, condensers for ships, water supply heaters, distillers, oil coolers, and heat exchangers for water treatment devices. . Copper alloys (such as brass, etc.) have a larger work hardening index than copper, and their deformation ability and deformation resistance are different. In the manufacturing process of pipes and wires, the amount of plastic deformation (rolling, drawing) passes is small, and the number of annealing between passes is also large. The most common and important problem in t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22F1/08
Inventor 张金利张士宏周文龙许沂李长杰胡新胜赵红生于传富蒋强
Owner GOLDEN DRAGON PRECISE COPPER TUBE GROUP
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