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

A process method, copper alloy technology, applied in the direction of pipes, rigid pipes, pipes/pipe joints/pipe fittings, etc., can solve problems such as extrusion and lubrication, high cost of mold maintenance, complicated production processes, etc., and meet personnel needs The effect of less space, small footprint and low labor intensity

Inactive Publication Date: 2010-01-06
高玉树
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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%

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] Example 1, producing H65Y2Φ10×0.8×4000 copper alloy pipe. The electrolytic copper and zinc ratios are 65%, 35%, and put into the melting furnace for melting in turn. The temperature of the copper alloy melt is controlled at 1020-1080°C. In order to prevent the copper alloy melt from being polluted, the surface is covered with 80-150mm thick charcoal Layer, the copper alloy melt enters the static chamber through the bottom channel underflow to further uniform alloy composition, and then enters the holding furnace through the bottom channel underflow to keep warm after the temperature is balanced. After sampling and analysis of the composition is qualified, it then enters the crystallizer for cooling and crystallization. The crystallizer cooling water pressure is controlled between 0.3-0.4MPa. After the copper alloy melt is crystallized, the copper alloy tube billet of Φ45×3.5 is continuously cast by the tractor upwards. The up-drawing speed is 130mm / min, the up-drawing p...

Embodiment 2

[0014] Example 2, to produce H68M Φ25×1×6000 copper alloy tubes, put purple copper and zinc in proportions of 68% and 32% in a melting furnace for smelting, and control the temperature of the copper alloy melt at 1040-1100°C, in order to prevent The copper alloy melt is polluted, and its surface is covered with a 80-150mm thick charcoal layer. The copper alloy melt flows into the static chamber through the bottom channel to further uniform the alloy composition, and after the temperature is balanced, it enters the holding furnace through the bottom channel to keep warm and take samples for analysis. After the ingredients are qualified, enter the crystallizer for cooling and crystallization. The cooling water pressure of the crystallizer is controlled between 0.35-0.45MPa. After crystallization, it is pulled upward by the tractor, and the Φ50×4 copper alloy tube billet is continuously cast. The pitch is 1.5mm, the frequency of pulling up and stopping is 80 times / minute, and the...

Embodiment 3

[0015] Example 3, to produce H62Y2Φ50×1×4000 straight pipes, select yellow miscellaneous copper and zinc according to the proportion of copper 62% and zinc 38% and put them into the melting furnace for melting, and the temperature of the copper alloy melt is controlled at 950-1020°C , in order to prevent the copper alloy melt from being polluted, the surface is covered with a 80-150mm thick charcoal layer. The copper alloy melt enters the static chamber through the bottom channel underflow to further uniform the alloy composition. After the temperature is balanced, it enters the holding furnace through the bottom channel underflow to keep warm. After the sampling composition is qualified, it enters the crystallizer for cooling and crystallization. The cooling water pressure of the crystallizer is controlled between 0.35-0.5MPa. After crystallization, it is drawn up by a tractor to continuously cast Φ70×4.5H62 copper alloy tube blanks. During up-drawing continuous casting, the ...

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PUM

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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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16L9/02B21C1/00
Inventor 赵玉
Owner 高玉树
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