Technological method for upwardly continuously casting, rolling, drawing and producing copper alloy tubes

Abstract

The invention provides a technological method for upwardly and continuously casting, rolling, drawing and producing copper alloy tubes. The technological method comprises the following steps: melting copper alloy raw materials according to a content proportion; further homogenizing the contents of an undercurrent passing by a standing chamber; keeping the temperature of the undercurrent by a maintaining furnace; cooling the undercurrent by a crystallizer to enter a tractor; upwardly drawing and continuously casting copper alloy tube blanks; then rolling the copper alloy tube blanks by a rolling mill; and drawing finished products of copper alloy tubes by a drawing mill. The technological method simplifies a traditional technological process in a new once-forming technology and has little investment, small occupation of land, low energy consumption, high efficiency, high rolling yield, little pollution and low cost, thereby being an advanced technological method with a certain market competitiveness.

Description

Technical field: [0001] The invention relates to a process method for producing copper alloy pipes, in particular to a process method for producing copper alloy pipes by upward continuous casting-rolling and stretching. Background technique: [0002] At present, the main method of producing copper alloy pipes is the extrusion method. Other methods such as oblique casting and perforation are used, and continuous casting and rolling are rarely used. Extruded, pickled, then rolled and stretched to finished tube. The disadvantages are: (1) The production process is complicated, there are many auxiliary facilities, the maintenance cost of the mold is high, the floor area is large, and the personnel requirements are high-quality; (2) The investment scale is large, ranging from hundreds of millions to hundreds of millions. (3) The secondary heating of the round billet requires extrusion molding, extruding cylinders, needles, and high energy consumption such as preheating before wo...

AI Technical Summary

Problems solved by technology

The disadvantages are: (1) The production process is complicated, there are many auxiliary facilities, the maintenance cost of the mold is high, the floor area is large, and the personnel requirements are high-quality; (2) The investment scale is large, ranging from hundreds of millions to hundreds of millions. (3) The secondary heating of the round billet requires extrusion molding, extruding cylinders, needles, and high energy consumption such as preheating before work; (4) Stirring, ingot casting, sawing, heating, pressing, peeling, acid Washing and other processes have large metal loss, low yield, and the yield of billet supply is less than 90%; (5) Semi-continuous casting in a single furnace or split furnace casting is used, which has poor production continuity and low efficiency; (6) Zinc burning loss is large, Stirring, reheating, extrusion and lubrication, etc. have a lot of smoke and serious pollution; (7) The eccentricity of the tube billet affects the subsequent cold processing, especially the extrusion yield of the large-diameter thin-walled brass tube for forward extrusion is 40%~ 60%