Technique for processing semihard phosphorus deoxidized copper pipes

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...

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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