Technique for processing semihard phosphorus deoxidized copper pipes

A phosphorus deoxidized copper, processing technology, applied in the direction of pipes, rigid pipes, pipes/pipe joints/pipe fittings, etc., can solve problems such as unstable performance, large fluctuations in product quality, and difficulty in ensuring the performance range of Vickers hardness. , to achieve the effect of stable product performance and high production feasibility

Inactive Publication Date: 2007-11-28
江苏张铜集团有限公司
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Problems solved by technology

[0002] The traditional processing technology of semi-hard phosphorus-deoxidized copper pipe mainly includes melting electrolytic copper, adding phosphorus-bronze master alloy into the melting furnace, rapid analysis before the furnace, pouring into billet, extruding the billet, rolling pipe, Complete recrystallization annealing, stretching, finishing, finished product annealing, performance inspection, and finally packaging and storage of pipes, but due to the limitations of annealing equipment and annealing process, the quality of products produced by this process fluctuates greatly, and the performance is very unstable , it is difficult to ensure the performance range requirements for Vickers hardness (HV) in semi-hard phosphorus deoxidized copper pipes, HV is between 65 and 75

Method used

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Embodiment 1

[0008] Embodiment 1, processing the semi-hard phosphorus deoxidized copper pipe material of Φ 28 * 1.2mm, earlier will need the electrolytic copper 2000kg of smelting (the total amount of electrolytic copper is 2995kg) and the iron-copper alloy of 4.5kg (the content of iron is 30% ) into the smelting furnace for smelting, then the electrolytic copper of remaining 995kg is added in the smelting furnace, fully stirred, and 6.5kg (the content of phosphorus is 15%) phosphor-bronze master alloy is added in the smelting furnace, passed through the front of the furnace Analyze and pour into ingots to obtain Φ150mm copper ingots, extrude the ingots to obtain Φ65×7.5mm tube blanks, and then roll the tubes to obtain Φ40×2mm tube blanks, and carry out complete hard stretching. Get a Φ28×1.2mm pipe, then finish it, complete recrystallization annealing (the annealing temperature is 410°C, and the time is 90min), perform performance inspection, and finally pack the pipe into storage.

[000...

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Abstract

The invention discloses a processing technology for half-hard phosphorous deoxidized copper pipe, comprising following procedures. Most melting electrolytic copper and iron element with the content of 0.045%-0.05% are added into melting furnace to be melted. Then small residual electrolytic copper is added into the melting furnace to be mixed fully. Phosphor-copper master alloy is added into the melting furnace. Through quick analysis on-the-spot sample it is cast into ingot. Extrusion, rolling pipe, complete hard tension, finishing, complete recrystallization annealing, performance testing are carried out for ingot. Finally pipes are packaged and stored. The merit is that as iron element is added in the melting process, performance range requirement of HV in half-hard phosphorous deoxidized copper pipe can be guaranteed while requirements such as elongation, tensile strength, yield strength and grain size so on of half-hard phosphorous deoxidized copper pipe can be guaranteed. It is provided with stable product performance and high producing feasibility.

Description

technical field [0001] The invention relates to a processing technology of a semi-hard phosphorus deoxidized copper pipe. Background technique [0002] The traditional processing technology of semi-hard phosphorus-deoxidized copper pipe mainly includes melting electrolytic copper, adding phosphorus-bronze master alloy into the melting furnace, rapid analysis before the furnace, pouring into billet, extruding the billet, rolling pipe, Complete recrystallization annealing, stretching, finishing, finished product annealing, performance inspection, and finally packaging and storage of pipes, but due to the limitations of annealing equipment and annealing process, the quality of products produced by this process fluctuates greatly, and the performance is very unstable , it is difficult to ensure the performance range requirements for Vickers hardness (HV) in semi-hard phosphorus deoxidized copper pipes, and HV is between 65 and 75. Contents of the invention [0003] The techni...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/02
Inventor 杨存利肖翔董江华朱卫东郭进
Owner 江苏张铜集团有限公司
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