CN1103612A - Drawing-continuous casting-stretch process for producing oxygen-free copper pipe - Google Patents
Drawing-continuous casting-stretch process for producing oxygen-free copper pipe Download PDFInfo
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- CN1103612A CN1103612A CN 93115264 CN93115264A CN1103612A CN 1103612 A CN1103612 A CN 1103612A CN 93115264 CN93115264 CN 93115264 CN 93115264 A CN93115264 A CN 93115264A CN 1103612 A CN1103612 A CN 1103612A
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Abstract
The process of producing oxygen-free copper pipe is that electrolytic copper is passed through melting, temp. maintaining in insulating furnace, cooling in crystallizer, pipe blank casting via drawing and continuous casting in drawing machine and stretch through stretcher to produce oxygen-free copper pipe. Compared with available techn process, the said one is greatly simplified, which replaces the complicated processes including casting, heating, extrusion or inclined-rolling, boring and pickling with one step of drawing and continuous casting.
Description
The present invention relates to a kind of process of producing oxygen-free copper pipe, relate to the process that a kind of drawing-continuous casting-stretch is produced oxygen-free copper pipe specifically.
Produce oxygen-free copper pipe at present,, in fusion-casting process, adopt straight empty melting in order to control oxygen content, casting circle copper base under gas shield, through heating, extruding, being rolled into then stretches produces oxygen-free copper pipe.Straight empty smelting technology complexity also must take special measure to prevent that oxygen content from exceeding standard in the subsequent thermal processing process, yield rate is low, and the energy consumption height, and metal loss is big, the cost height.
Purpose of the present invention is to provide a kind of process of drawing-continuous casting-stretch production oxygen-free copper pipe to produce oxygen-free copper pipe, to overcome the deficiency of said method.This process technology is simple, the yield rate height, and energy consumption is low, and metal loss is little, and cost is low.
The object of the present invention is achieved like this: cathode copper enters the holding furnace insulation through passage after melting furnace fusing, again by after the crystallizer cooling, enters to draw on the hauling machine and casts out the copper pipe pipe continuously, and the stretched machine of copper pipe pipe stretches, and pulls out oxygen-free copper pipe.
When cathode copper melted in melting furnace, the temperature of copper liquid was 1100-1250 ℃, and the pressure of crystallizer cooling water is 0.2-0.6mpa, and the lead speed of continuous up-casting is 150-600mm/min, on draw that to stop drawing frequency be 50-250 time/minute, on to draw pitch be 2-6mm.
This process is owing to replaced technical process such as the casting in the traditional handicraft, heating, extruding or rolling, pickling with continuous up-casting one procedure, thereby simplified technological process greatly, with short production cycle, equipment investment is few, energy resource consumption is low, and metal loss is few, the yield rate height, production cost is low, has remarkable economic efficiency.
The invention will be further described below by embodiment.
Embodiment 1, produces φ 35 * 2.5 * 3350 oxygen-free copper pipes.Cathode copper is cut into the wide bar of 250mm, put into the melting furnace melting, copper liquid temperature is controlled in 1200-1250 ℃, for preventing that copper liquid from polluting, at the thick charcoal layer of its surface coverage 80-120mm, copper liquid enters the holding furnace insulation through passage, enter crystallizer then and carry out crystallization, the crystallizer cooling water pressure is controlled between the 0.5-0.6mpa, after the crystallization of copper liquid, by hauling machine upwards traction cast out the copper pipe pipe of φ 50 * 5 continuously, lead speed is 150mm/min, on to draw pitch be 4mm, on draw that to stop drawing frequency be 80 times/minute, on draw temperature and be controlled at about 1180 ℃, the copper pipe pipe sawing that continuous casting is gone out becomes the length of 4022mm, makes the long chuck of 150mm, to stretching-machine, stretch, the copper pipe pipe fund-raising of φ 50 * 5 is stretched to φ 42.8 * 4, φ 37.8 * 3.2, φ 35 * 2.5 * 10640, and sawing becomes the finished product length of 3350mm then, carries out alignment again, finishing.Annealed furnace annealing forms finished product.Annealing temperature is controlled at about 470 ℃, is incubated 5 hours, inflated with nitrogen protection during annealing.
Embodiment 2, produce the oxygen-free copper pipe of φ 16 * 1.Cathode copper is cut into wide for the bar of 250mm, put into the melting furnace melting, copper liquid temperature is controlled between 1100-1200 ℃, for preventing that copper liquid from polluting, at the thick charcoal layer of its surface coverage 80-120mm, after copper liquid enters the holding furnace insulation through passage, enter the crystallizer crystallization again, the pressure of crystallizer cooling water is controlled between the 0.4-0.5mpa, by upwards traction of hauling machine, casts out the copper pipe pipe of φ 40 * 4 continuously after the crystallization.During continuous up-casting, lead speed is 600mm/min, on draw pitch 6mm, on draw that to stop drawing frequency be 50 times/minute, on draw temperature and be controlled at about 1180 ℃.The copper pipe pipe sawing that continuous casting is gone out becomes the length of 4000mm, makes the long chuck of 130mm, sends on the stretching-machine to stretch.With the copper pipe pipe of φ 40 * 4, be stretched to φ 33.7 * 3.05, φ 30.7 * 2.25, φ 27.8 * 1.8 successively, final length is 1180mm; its sawing is interrupted, and length is 5900mm, makes the chuck of long 120mm; send into stretching-machine once more and stretch, be stretched to φ 24.8 * 1.5, φ 22.8 * 1.2 successively, its length is 10430mm; its sawing is interrupted; length is 5200mm, sends into annealing furnace annealing, about 460 ℃ of annealing temperatures; 5 hours heat tracing time, and inflated with nitrogen protection.Annealed tube blank is made length and is the chuck of 100mm, sends into stretching-machine and stretches, and is stretched to φ 17.85 * 1.25, φ 16 * 1 successively, and long is 8640mm, then its sawing is become the finished product length of 4300mm, again through aligning, finishing formation finished product.
Embodiment 3, produce φ 4 * 0.5 oxygen-free copper pipe coil pipes.Cathode copper is cut into the wide bar of 200mm, put into the melting furnace melting, copper liquid temperature is controlled between 1100-1200 ℃, for preventing that copper liquid from polluting, at the thick charcoal layer of its surface coverage 80-120mm, after copper liquid enters the holding furnace insulation through passage, enter the crystallizer crystallization again, the pressure of crystallizer cooling water is controlled between the 0.2-0.4mpa, by upwards traction of hauling machine, casts out the copper pipe pipe of φ 40 * 4 continuously after the crystallization.During continuous up-casting, lead speed is 150mm/min, on to draw pitch be 2mm, on draw and stop drawing frequency 250 times/minute, on draw temperature and be controlled at about 1130 ℃.The copper pipe pipe sawing that casts out is continuously become the length of 6300mm, make the long chuck of 130mm, sending into stretching-machine stretches, be stretched to φ 34.7 * 3.2, φ 31.7 * 2.55, φ 29.8 * 1.95, φ 24.8 * 1.65, φ 20.8 * 1.37 successively, length is 32700mm, crop clot, coil diameter are φ 1000～φ 1500mm.Send in the annealing furnace after the clot and anneal, annealing temperature is about 500 ℃, and the heat tracing time is 5 hours, the inflated with nitrogen protection.Copper pipe pipe after the clot is made chuck, sends into stretching-machine again and coils and draw, and is stretched to φ 17.35 * 1.25, φ 14.35 * 0.95, φ 11.9 * 0.82, φ 10.85 * 0.8 successively, and length is 105000mm, and then the crop clot.The copper pipe pipe that clot is good is annealed once more, and annealing temperature is about 450 ℃, 5 hours heat tracing time, inflated with nitrogen protection.Make chuck after the annealing, coil again and draw, be stretched to φ 8.8 * 0.67, φ 7.1 * 0.57, φ 5.7 * 0.52, φ 4.4 * 0.51 successively, anneal behind the crop again, annealing temperature is about 500 ℃, 5 hours heat tracing time, inflated with nitrogen protection.After the annealing, make chuck and carry out hub disk and draw, be stretched to φ 4 * 0.5, form finished product.
Claims (6)
1, the process of oxygen-free copper pipe is produced in a kind of continuous up-casting-stretching, it is characterized in that cathode copper is after the melting furnace fusing, enter the holding furnace insulation through passage, again by after the crystallizer cooling, enter to draw on the hauling machine and cast out the copper pipe pipe continuously, the stretched machine of copper pipe pipe stretches, and pulls out oxygen-free copper pipe.
2, the process of oxygen-free copper pipe is produced in continuous up-casting according to claim 1-stretching, and the temperature that it is characterized in that copper liquid is 1100-1250 ℃.
3, the process of oxygen-free copper pipe is produced in continuous up-casting according to claim 1-stretching, and the pressure that it is characterized in that the crystallizer cooling water is 0.2-0.6mpa.
4, the process of oxygen-free copper pipe is produced in continuous up-casting according to claim 1-stretching, and the lead speed that it is characterized in that continuous up-casting is 150-600mm/min.
5, continuous up-casting according to claim 1-stretching is produced the process of oxygen-free copper pipe, it is characterized in that drawing that to stop drawing frequency be 80-250 time/minute.
6, continuous up-casting according to claim 1-stretching is produced the process of oxygen-free copper pipe to draw pitch on being is 2-6mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93115264 CN1103612A (en) | 1993-12-11 | 1993-12-11 | Drawing-continuous casting-stretch process for producing oxygen-free copper pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 93115264 CN1103612A (en) | 1993-12-11 | 1993-12-11 | Drawing-continuous casting-stretch process for producing oxygen-free copper pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1103612A true CN1103612A (en) | 1995-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 93115264 Pending CN1103612A (en) | 1993-12-11 | 1993-12-11 | Drawing-continuous casting-stretch process for producing oxygen-free copper pipe |
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100337288C (en) * | 2005-06-27 | 2007-09-12 | 江阴市电工合金有限公司 | Oxygen-free copper generatrix and its preparing method |
| CN100369711C (en) * | 2005-05-31 | 2008-02-20 | 江阴市华西铜业有限公司 | Manufacturing method of high performance antioxidation environmental protection copper raft |
| CN102039323A (en) * | 2010-12-02 | 2011-05-04 | 金川集团有限公司 | Heated-mold continuous casting-continuous drawing method for brass alloy condenser pipe |
| CN102039328A (en) * | 2010-12-02 | 2011-05-04 | 金川集团有限公司 | Heated mould continuous casting-continuous drawing method of cupronickel alloy condenser pipes |
| CN101719527B (en) * | 2009-12-03 | 2011-10-26 | 绍兴市力博电气有限公司 | Production technique of copper strips for solar modules |
| CN102581060A (en) * | 2012-02-20 | 2012-07-18 | 绍兴市力博电气有限公司 | Method for processing copper tube having circular inside and quadrate outside |
| CN102990029A (en) * | 2012-12-25 | 2013-03-27 | 富威科技（吴江）有限公司 | Process for producing anaerobic copper billets in upward continuous casting method |
| CN104043943A (en) * | 2013-03-11 | 2014-09-17 | 高玉树 | Manufacturing process of cupronickel pipe |
| CN105149407A (en) * | 2015-09-17 | 2015-12-16 | 特能传热科技（中山）有限公司 | Manufacturing technology for high-purity oxygen-free copper bar for producing magnetron |
| CN106269985A (en) * | 2015-06-12 | 2017-01-04 | 河北欧通有色金属制品有限公司 | The manufacture method of oval copper pipe in foreign side |
| CN106269984A (en) * | 2015-06-12 | 2017-01-04 | 河北欧通有色金属制品有限公司 | The manufacture method of square-outside and round-inside copper pipe |
-
1993
- 1993-12-11 CN CN 93115264 patent/CN1103612A/en active Pending
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100369711C (en) * | 2005-05-31 | 2008-02-20 | 江阴市华西铜业有限公司 | Manufacturing method of high performance antioxidation environmental protection copper raft |
| CN100337288C (en) * | 2005-06-27 | 2007-09-12 | 江阴市电工合金有限公司 | Oxygen-free copper generatrix and its preparing method |
| CN101719527B (en) * | 2009-12-03 | 2011-10-26 | 绍兴市力博电气有限公司 | Production technique of copper strips for solar modules |
| CN102039323A (en) * | 2010-12-02 | 2011-05-04 | 金川集团有限公司 | Heated-mold continuous casting-continuous drawing method for brass alloy condenser pipe |
| CN102039328A (en) * | 2010-12-02 | 2011-05-04 | 金川集团有限公司 | Heated mould continuous casting-continuous drawing method of cupronickel alloy condenser pipes |
| CN102581060A (en) * | 2012-02-20 | 2012-07-18 | 绍兴市力博电气有限公司 | Method for processing copper tube having circular inside and quadrate outside |
| CN102581060B (en) * | 2012-02-20 | 2014-03-19 | 绍兴市力博电气有限公司 | Method for processing copper tube having circular inside and quadrate outside |
| CN102990029A (en) * | 2012-12-25 | 2013-03-27 | 富威科技（吴江）有限公司 | Process for producing anaerobic copper billets in upward continuous casting method |
| CN104043943A (en) * | 2013-03-11 | 2014-09-17 | 高玉树 | Manufacturing process of cupronickel pipe |
| CN106269985A (en) * | 2015-06-12 | 2017-01-04 | 河北欧通有色金属制品有限公司 | The manufacture method of oval copper pipe in foreign side |
| CN106269984A (en) * | 2015-06-12 | 2017-01-04 | 河北欧通有色金属制品有限公司 | The manufacture method of square-outside and round-inside copper pipe |
| CN105149407A (en) * | 2015-09-17 | 2015-12-16 | 特能传热科技（中山）有限公司 | Manufacturing technology for high-purity oxygen-free copper bar for producing magnetron |
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