CN101709403A - Method for preparing brass seamless tubes by adopting hollow ingots - Google Patents
Method for preparing brass seamless tubes by adopting hollow ingots Download PDFInfo
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- CN101709403A CN101709403A CN200910185340A CN200910185340A CN101709403A CN 101709403 A CN101709403 A CN 101709403A CN 200910185340 A CN200910185340 A CN 200910185340A CN 200910185340 A CN200910185340 A CN 200910185340A CN 101709403 A CN101709403 A CN 101709403A
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Abstract
The invention relates to a method for preparing brass seamless tube by adopting hollow ingots. The brass seamless tube comprises the following elements in percent by weight: 76-79 percent of electrolytic copper, 1.8-2.5 percent of aluminum, 0.02-0.06 percent of arsenic, and the balance of zinc. The method comprises the following steps of: 1, placing the electrolytic copper, aluminum, zinc and arsenic in a low frequency electric furnace, heating to the temperature of 1130-1160 DEG C, shaking while smelting, and casting into hollow ingots; 2, extruding into blank tubes with the size of phi 83mm*7mm; 3, rolling into tubes to have the size of phi 45mm*2.8mm; 4, firstly stretching till the tubes have the size of phi 39mm*2.3mm, then stretching to have the size of phi 34mm*2.0mm, then shaving to the condition of phi 33.6mm, carrying out intermediate annealing and stretching in sequence till the stretched tubes have the size of phi 30*1.5mm, and annealing in a furnace for brightness; 5, firstly stretching to have the size phi 28mm*1.2mm, then stretching to phi 25mm*1mm which is the size of finished products; 6, aligning, sizing, cleaning and then carrying out eddy current testing of tubes one by one; and 7, annealing the finished products. The brass seamless tubes prepared by adopting the method have small geometric loss and high yield.
Description
(1) technical field
The present invention relates to a kind of preparation method of brass seamless tubes.
(2) background technology
Brass seamless tubes is good at seawater and coastal waters water quality corrosion resistance nature and processing characteristics because of it, and the heat exchanger that therefore is widely used in industries such as power station, boats and ships and refrigeration is made heat transfer tube.Present brass seamless tubes is to adopt solid billet preparation, because it needs advanced eleven punch 11 to push in the course of processing again, therefore, how much losses are bigger, and lumber recovery is lower, and cost is also higher.
(3) summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, provide the less and higher employing hollow ingots of lumber recovery of a kind of how much losses to prepare the method for brass seamless tubes.
The object of the present invention is achieved like this: a kind of method that adopts hollow ingots to prepare brass seamless tubes, and the weight percent of described each element of brass seamless tubes is:
Electrolytic copper 76～79%
Aluminium 1.8～2.5%
Arsenic 0.02～0.06%
Surplus is a zinc
The weight percent summation of each element is 100%;
Described method comprises following processing step:
Step 1, get electrolytic copper, aluminium, zinc and arsenic by proportioning and place low frequency furnace, be heated to 1130～1160 ℃, fusing of margin refining limit vibrations adopt the method for horizontal casting to be cast as the hollow ingots of ￠ 160mm * ￠ 65mm * 400mm;
Step 2, fluid origin hollow ingots is squeezed into the shell of ￠ 83mm * 7mm;
Step 3, the shell after will pushing are rolled into ￠ 45mm * 2.8mm;
Step 4, the shell after rolling is stretched to ￠ 39mm * 2.3mm earlier with stretching die, be stretched to ￠ 34mm * 2.0mm again, dig skin then to ￠ 33.6mm, carry out process annealing, annealing temperature is 680 ℃ ± 5 ℃, annealing speed is 280mm/min ± 2mm/min, shell after the annealing is removed surface oxide layer to stretch with stretching die again, be of a size of ￠ 30 * 1.5mm after the stretching, shell after the stretching is annealed in furnace for brightness, annealing temperature is 650 ℃ ± 5 ℃, and annealing speed is 350mm/mi ± 2mm/min;
Step 5, the shell after will annealing are stretched to ￠ 28mm * 1.2mm earlier with stretching die, are stretched to ￠ 25mm * 1mm again, are final dimension;
By Zhi Jinhang eddy current test, the eddy current test gain is 31dB after step 6, alignment, scale, the cleaning, and phase place is 128Deg, is filtered into 15N, and frequency is 5KHz;
Step 7, finished products, annealing temperature are 620 ℃ ± 5 ℃, and annealing speed is 380mm/min ± 2mm/min;
Packing warehouse-in after step 8, the inspection after construction;
The structure of described stretching die is made up of four parts: Lubricanting cone, work zone, calibrating strap and go out prostomum, and the each several part processing requirement is as follows:
1), Lubricanting cone: the cone angle beta of Lubricanting cone=40 °, the length of Lubricanting cone is 0.6 times of calibrating strap diameter;
2), work zone: the cone angle of work zone=11～12 °;
3), calibrating strap: the length of calibrating strap determines that according to the stretching die diameter stretching die diameter is at 3～20mm, and calibrating strap length is controlled at 1～1.5mm, and the stretching die diameter is at 20.1～40mm, and calibrating strap length is controlled at 1.5～2.0mm;
4), go out prostomum: go out cone angle gamma=45～60 ° of prostomum, the length that goes out prostomum is 0.2～0.5 times of calibrating strap diameter.
The present invention has following characteristics:
1, melting and casting: shake continuous casting with melting, can improve billet crystalline homogeneity greatly.Control the copper water liquid level 〉=60cm of the holding furnace of low frequency furnace, can guarantee the castability and the surface quality of ingot casting.Because the inner cavity size length and width of holding furnace height is 750mm * 700mm * 800mm, removing bottom copper outlet height is 200mm, and actual copper volume of water is 392000cm
3, the proportion of seamless copper pipe of the present invention is 8.6, then the pressure of copper water weight is 260 kPas in the stove.And the pressure of the copper outlet of the holding furnace of low frequency furnace should be greater than 250 kPas in theory, so the liquid level of copper water should be greater than 60cm.
2, cold rolling: the viscous deformation when cold rolling is produced by the metal inside slippage.Such texturizing condition just can utilize the plasticity of metal fully, makes to obtain big deflection under the situation of not destroying metallic integrity.And through the processing of cold rolling aximal deformation value, metal inside is organized fine and close more, and this to the further work material of brass seamless tubes, for example efficiently rolls the raising that the processing characteristics of tooth pipe can be big for needs.
3, stretch: owing to have good viscous deformation performance in the material of the present invention.This raising to the tensile deformation coefficient has bigger effect, coefficient of extension can be controlled in 1.2～1.4, can specify rational processing passage and reasonably join mold technique according to this coefficient of extension scope, copper pipe stretches and rationally joins the scantlings of the structure that the mould key issue is optimization drawing die nib district.
4, flaw detection: because that the aluminum brass pipe requires to compare to the parameter setting of eddy current test is higher, therefore selecting suitable gain, phase place, filtering, frequency is exactly the key of flaw detection quality.
The invention has the beneficial effects as follows:
The inventive method uses hollow ingots to prepare brass seamless tubes, compares than preparing seamless copper pipe with solid billet, and how much losses reduce 8%, and lumber recovery improves 5%, so cost is also lower.In addition, contain 1.8～2.5% aluminium and 0.02～0.06% arsenic in the material of the present invention, corrosion resistance nature of the present invention and abrasion resistance can be better.
(4) embodiment
The employing hollow ingots that the present invention relates to prepares the method for brass seamless tubes, and the weight percent of described each element of brass seamless tubes is:
Electrolytic copper 76～79%
Aluminium 1.8～2.5%
Arsenic 0.02～0.06%
Surplus is a zinc
The weight percent summation of each element is 100%.
Its preparation method comprises following processing step:
Step 1, get electrolytic copper, aluminium, zinc and arsenic by proportioning and place low frequency furnace, be heated to 1130～1160 ℃, fusing of margin refining limit vibrations, the method for employing horizontal casting is cast as the hollow ingots of ￠ 160mm (external diameter) * ￠ 65mm (internal diameter) * 400mm (length);
Step 2, fluid origin hollow ingots is squeezed into the shell of ￠ 83mm (external diameter) * 7mm (wall thickness);
Step 3, the shell after will pushing are rolled into ￠ 45mm * 2.8mm;
Step 4, the shell after rolling is stretched to ￠ 39mm * 2.3mm earlier with stretching die, be stretched to ￠ 34mm * 2.0mm again, dig skin then to ￠ 33.6mm, carry out process annealing, annealing temperature is 680 ℃ ± 5 ℃, annealing speed is 280mm/min ± 2mm/min, shell after the annealing is removed surface oxide layer to stretch with stretching die again, be of a size of ￠ 30 * 1.5mm after the stretching, shell after the stretching is annealed in furnace for brightness, annealing temperature is 650 ℃ ± 5 ℃, and annealing speed is 350mm/mi ± 2mm/min;
Step 5, the shell after will annealing are stretched to ￠ 28mm * 1.2mm earlier with stretching die, are stretched to ￠ 25mm * 1mm again, are final dimension;
By Zhi Jinhang eddy current test, the eddy current test gain is 31dB after step 6, alignment, scale, the cleaning, and phase place is 128Deg, is filtered into 15N, and frequency is 5KHz;
Step 7, finished products, annealing temperature are 620 ℃ ± 5 ℃, and annealing speed is 380mm/min ± 2mm/min;
Packing warehouse-in after step 8, the inspection after construction.
The structure of stretching die of the present invention is made up of four parts: Lubricanting cone, work zone, calibrating strap and go out prostomum, and the each several part processing requirement is as follows:
1, Lubricanting cone: the cone angle beta of Lubricanting cone=40 °, the length of Lubricanting cone is 0.6 times of calibrating strap diameter;
2, work zone: the cone angle of work zone=11～12 °;
3, calibrating strap: the length of calibrating strap determines that according to the stretching die diameter stretching die diameter is at 3～20mm, and calibrating strap length is controlled at 1～1.5mm, and the stretching die diameter is at 20.1～40mm, and calibrating strap length is controlled at 1.5～2.0mm;
4, go out prostomum: go out cone angle gamma=45～60 ° of prostomum, the length that goes out prostomum is 0.2～0.5 times of calibrating strap diameter.
Claims (1)
1. method that adopts hollow ingots to prepare brass seamless tubes is characterized in that the weight percent of described each element of brass seamless tubes is:
Electrolytic copper 76～79%
Aluminium 1.8～2.5%
Arsenic 0.02～0.06%
Surplus is a zinc
The weight percent summation of each element is 100%;
Described method comprises following processing step:
Step 1, get electrolytic copper, aluminium, zinc and arsenic by proportioning and place low frequency furnace, be heated to 1130～1160 ℃, fusing of margin refining limit vibrations adopt the method for horizontal casting to be cast as the hollow ingots of ￠ 160mm * ￠ 65mm * 400mm;
Step 2, fluid origin hollow ingots is squeezed into the shell of ￠ 83mm * 7mm;
Step 3, the shell after will pushing are rolled into ￠ 45mm * 2.8mm;
Step 4, the shell after rolling is stretched to ￠ 39mm * 2.3mm earlier with stretching die, be stretched to ￠ 34mm * 2.0mm again, dig skin then to ￠ 33.6mm, carry out process annealing, annealing temperature is 680 ℃ ± 5 ℃, annealing speed is 280mm/min ± 2mm/min, shell after the annealing is removed surface oxide layer to stretch with stretching die again, be of a size of ￠ 30 * 1.5mm after the stretching, shell after the stretching is annealed in furnace for brightness, annealing temperature is 650 ℃ ± 5 ℃, and annealing speed is 350mm/mi ± 2mm/min;
Step 5, the shell after will annealing are stretched to ￠ 28mm * 1.2mm earlier with stretching die, are stretched to ￠ 25mm * 1mm again, are final dimension;
By Zhi Jinhang eddy current test, the eddy current test gain is 31dB after step 6, alignment, scale, the cleaning, and phase place is 128Deg, is filtered into 15N, and frequency is 5KHz;
Step 7, finished products, annealing temperature are 620 ℃ ± 5 ℃, and annealing speed is 380mm/min ± 2mm/min;
Packing warehouse-in after step 8, the inspection after construction;
The structure of described stretching die is made up of four parts: Lubricanting cone, work zone, calibrating strap and go out prostomum, and the each several part processing requirement is as follows:
1), Lubricanting cone: the cone angle beta of Lubricanting cone=40 °, the length of Lubricanting cone is 0.6 times of calibrating strap diameter;
2), work zone: the cone angle of work zone=11～12 °;
3), calibrating strap: the length of calibrating strap determines that according to the stretching die diameter stretching die diameter is at 3～20mm, and calibrating strap length is controlled at 1～1.5mm, and the stretching die diameter is at 20.1～40mm, and calibrating strap length is controlled at 1.5～2.0mm;
4), go out prostomum: go out cone angle gamma=45～60 ° of prostomum, the length that goes out prostomum is 0.2～0.5 times of calibrating strap diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101853405A CN101709403B (en) | 2009-11-06 | 2009-11-06 | Method for preparing brass seamless tubes by adopting hollow ingots |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101853405A CN101709403B (en) | 2009-11-06 | 2009-11-06 | Method for preparing brass seamless tubes by adopting hollow ingots |
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| CN101709403A true CN101709403A (en) | 2010-05-19 |
| CN101709403B CN101709403B (en) | 2011-07-20 |
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| CN2009101853405A Expired - Fee Related CN101709403B (en) | 2009-11-06 | 2009-11-06 | Method for preparing brass seamless tubes by adopting hollow ingots |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831572A (en) * | 2010-05-31 | 2010-09-15 | 浙江海亮股份有限公司 | Seawater corrosion resistant drawn aluminum bronze tube and production process thereof |
| CN102179487A (en) * | 2010-10-13 | 2011-09-14 | 中国科学院金属研究所 | Short-flow preparation process for thick-wall ring piece and thick-wall tube piece |
| CN102581061A (en) * | 2012-03-09 | 2012-07-18 | 泉州中宇卫浴科技实业有限公司 | Production method for seamless brass pipe |
| CN102829657A (en) * | 2012-08-16 | 2012-12-19 | 江苏仓环铜业股份有限公司 | High temperature resistant sintered heat tube and producing method thereof |
| CN102974646A (en) * | 2012-12-20 | 2013-03-20 | 西南铝业（集团）有限责任公司 | Manufacturing process of aluminum alloy water-drop-shaped thin-wall tubular material |
| CN103045898A (en) * | 2013-01-16 | 2013-04-17 | 苏州金仓合金新材料有限公司 | Novel environment-friendly high-stibium tin alloy pipe and preparation method thereof |
| CN104324973A (en) * | 2014-09-04 | 2015-02-04 | 明达铝业科技(太仓)有限公司 | Making method of high-strength aluminum section tubes |
| CN108160744A (en) * | 2017-12-29 | 2018-06-15 | 西南铝业（集团）有限责任公司 | A kind of preparation method of the high aluminum alloy conduit of inner surface quality |
| CN108213110A (en) * | 2017-12-29 | 2018-06-29 | 西南铝业（集团）有限责任公司 | A kind of preparation method of catheter blank and aluminum alloy conduit |
| CN109201770A (en) * | 2018-09-13 | 2019-01-15 | 河北欧通有色金属制品有限公司 | A kind of processing method of large caliber ultra-long bronze pan tube |
| CN115415350A (en) * | 2022-08-30 | 2022-12-02 | 金川集团股份有限公司 | Production method of large-diameter and overweight cupronickel large pipe |
| RU2800258C1 (en) * | 2022-12-09 | 2023-07-19 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | Method for manufacturing wear-resistant crushing plates for jaw crushers |
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2009
- 2009-11-06 CN CN2009101853405A patent/CN101709403B/en not_active Expired - Fee Related
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831572A (en) * | 2010-05-31 | 2010-09-15 | 浙江海亮股份有限公司 | Seawater corrosion resistant drawn aluminum bronze tube and production process thereof |
| CN102179487B (en) * | 2010-10-13 | 2013-04-17 | 中国科学院金属研究所 | Short-flow preparation process for thick-wall ring piece and thick-wall tube piece |
| CN102179487A (en) * | 2010-10-13 | 2011-09-14 | 中国科学院金属研究所 | Short-flow preparation process for thick-wall ring piece and thick-wall tube piece |
| CN102581061A (en) * | 2012-03-09 | 2012-07-18 | 泉州中宇卫浴科技实业有限公司 | Production method for seamless brass pipe |
| CN102581061B (en) * | 2012-03-09 | 2015-04-15 | 泉州中宇卫浴科技实业有限公司 | Production method for seamless brass pipe |
| CN102829657A (en) * | 2012-08-16 | 2012-12-19 | 江苏仓环铜业股份有限公司 | High temperature resistant sintered heat tube and producing method thereof |
| CN102974646A (en) * | 2012-12-20 | 2013-03-20 | 西南铝业（集团）有限责任公司 | Manufacturing process of aluminum alloy water-drop-shaped thin-wall tubular material |
| CN103045898A (en) * | 2013-01-16 | 2013-04-17 | 苏州金仓合金新材料有限公司 | Novel environment-friendly high-stibium tin alloy pipe and preparation method thereof |
| CN104324973A (en) * | 2014-09-04 | 2015-02-04 | 明达铝业科技(太仓)有限公司 | Making method of high-strength aluminum section tubes |
| CN108160744A (en) * | 2017-12-29 | 2018-06-15 | 西南铝业（集团）有限责任公司 | A kind of preparation method of the high aluminum alloy conduit of inner surface quality |
| CN108213110A (en) * | 2017-12-29 | 2018-06-29 | 西南铝业（集团）有限责任公司 | A kind of preparation method of catheter blank and aluminum alloy conduit |
| CN108160744B (en) * | 2017-12-29 | 2020-02-14 | 西南铝业（集团）有限责任公司 | Preparation method of aluminum alloy conduit with high inner surface quality |
| CN108213110B (en) * | 2017-12-29 | 2020-02-18 | 西南铝业（集团）有限责任公司 | Preparation method of conduit blank and aluminum alloy conduit |
| CN109201770A (en) * | 2018-09-13 | 2019-01-15 | 河北欧通有色金属制品有限公司 | A kind of processing method of large caliber ultra-long bronze pan tube |
| CN115415350A (en) * | 2022-08-30 | 2022-12-02 | 金川集团股份有限公司 | Production method of large-diameter and overweight cupronickel large pipe |
| RU2800258C1 (en) * | 2022-12-09 | 2023-07-19 | федеральное государственное бюджетное образовательное учреждение высшего образования "Санкт-Петербургский горный университет" | Method for manufacturing wear-resistant crushing plates for jaw crushers |
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|---|---|
| CN101709403B (en) | 2011-07-20 |
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Address after: 214423 Huahong Industrial Park, Zhouzhuang Town, Jiangyin, Jiangsu 1 Patentee after: Jiangyin and fine Seiko technology Co., Ltd. Address before: 214423 Huahong Industrial Park, Zhouzhuang Town, Jiangyin, Jiangsu 1 Patentee before: Jiangyin Xinhuahong Copper Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
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Granted publication date: 20110720 Termination date: 20201106 |