CN101709407A - Preparation method of ferrimanganic copper-nickel tube - Google Patents
Preparation method of ferrimanganic copper-nickel tube Download PDFInfo
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- CN101709407A CN101709407A CN200910185341A CN200910185341A CN101709407A CN 101709407 A CN101709407 A CN 101709407A CN 200910185341 A CN200910185341 A CN 200910185341A CN 200910185341 A CN200910185341 A CN 200910185341A CN 101709407 A CN101709407 A CN 101709407A
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Abstract
The invention relates to a preparation method of a ferrimanganic copper-nickel tube. The ferrimanganic copper-nickel tube comprises the following elements by weight percent: 29-32% of nickel, 1.5-2.5% of manganese, 1.7-2.3% of iron, 0.008% of mixed rare earth, and the balance electrolytic copper; the sum of each element is 100%; the mixed rare earth is prepared by mixing lanthanum, cerium and yttrium according to the weight ratio of 2:2:1. The preparation method comprises the following steps: taking electrolytic copper, nickel, manganese and iron; placing into a low-frequency electric furnace; heating, vibrating while smelting; adding the mixed rare earth; casting into a solid billet by adopting a horizontal continuous casting method; heating, extruding into a blank pipe; rolling, stretching and acid cleaning; carrying out multichannel stretching until the finished product is prepared; and annealing the finished product. As the mixed rare earth is added, the preparation method of the invention can improve the surface quality of the billet, refine alloy crystal particles, and improve cold machining performance, so that better manganese and iron can be added into the alloy, and high manganese and high iron can greatly improve corrosion resistance and washing resistance of the ferrimanganic copper-nickel tube.
Description
(1) technical field
The present invention relates to a kind of preparation method of ferrimanganic copper-nickel tube.This copper pipe is mainly used on the heat exchanger of industries such as power station, boats and ships, refrigeration, sea water desaltination, as heat transfer tube.
(2) background technology
At present, along with the development of industries such as power station, boats and ships, refrigeration, sea water desaltination, need to seek the heat exchange tube material of a kind of highly corrosion resistant performance and Nai Gao performance of flushing.The heat transfer tube that uses mostly is market brass pipe and Alpaka pipe at present.Market brass pipe and common Alpaka pipe all have its deficiency, and existing division is as follows:
Brazed copper tube: the brazed copper tube cost is lower, but corrosion resistance nature and processing characteristics do not have copper-nickel alloy to run well, just wants maintain and replace a collection of in general about 3 years.Power station, the boats and ships maintenance cost of suspending is big, and the influence of refrigeration shutdown maintenance is big.
The Alpaka pipe: Alpaka pipe corrosion resistance nature and abrasion resistance can be better, but still not enough at high-corrosion resistant and Nai Gao performance of flushing.
(3) summary of the invention
The objective of the invention is to overcome above-mentioned deficiency, the preparation method of the good ferrimanganic copper-nickel tube of a kind of high-corrosion resistant and Nai Gao performance of flushing is provided.
The object of the present invention is achieved like this: a kind of preparation method of ferrimanganic copper-nickel tube, and the weight percent of described each element of ferrimanganic copper-nickel tube is:
Nickel 29-32%
Manganese 1.5-2.5%
Iron 1.7-2.3%
Mishmetal 0.008%
Surplus is an electrolytic copper
The summation of each element is 100%,
Described mishmetal by lanthanum, cerium and yttrium by lanthanum: cerium: the weight ratio of yttrium=2: 2: 1 mixes;
Its preparation method comprises following processing step:
Step 1, get electrolytic copper, nickel, manganese and iron by proportioning and place low frequency furnace, be heated to 1560～1610 ℃, fusing of margin refining limit vibration, and add mishmetal adopts the method for horizontal casting to be cast as the solid billet of φ 160nn * 250mm,
Step 2, fluid origin solid billet is heated to 1000-1050 ℃, is squeezed into the shell of φ 83mm * 11.5mm,
Step 3, the shell after will pushing are rolled into φ 45mm * 3.5mm, and its rolling feed is 3-5mm/ time, roll speed 140mm/ branch,
Step 4, the shell after rolling is stretched to φ 40mm * 3.2mm with stretching die, digs skin then, carry out two passages and stretch, be of a size of after two passages stretch and be respectively φ 35 * 2.65mm and φ 32 * 2.4mm digging shell behind the skin to φ 38mm; Shell after two passages stretch carries out process annealing, and annealing temperature is 800 ℃ ± 5 ℃, and annealing speed is 340mm/min ± 2mm/min,
Surface oxide layer is removed in step 5, pickling,
Step 6, the blank after the pickling is carried out multi-pass stretch, be of a size of after multi-pass stretches and be respectively φ 28 * 2.2mm, φ 26 * 2mm, φ 22 * 1.85mm and φ 19 * 1.78mm, until finished product,
By Zhi Jinhang eddy current test, the eddy current test gain is 31dB after step 7, alignment, scale, the cleaning, and phase place is 125Deg, is filtered into 15N, and frequency is 5KHz,
Step 8, finished products, annealing temperature are 770 ℃ ± 5 ℃, and annealing speed is 180-200mm/min;
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:
Lubricanting cone: the cone angle beta of Lubricanting cone=40 °, the length of Lubricanting cone is 0.6 times of calibrating strap diameter,
The work zone: the cone angle of work zone=11～12 °,
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 drawing-die diameter is at 20.1～40mm, and calibrating strap length is controlled at 1.5～2.0mm,
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:
In the material because the content of iron and manganese than the content height of BFe30-1-1 (C71500), high manganese high ferro can improve the anti-erosion corrosion performance of ferrimanganic copper-nickel tube and media-resistant corrosion life (see Table one, table two) greatly, but, high manganese high ferro is difficult to add, and high manganese high ferro skewness in alloy, crystal grain is thicker, easily forms surface imperfection, cause cold worked fragility, cold-forming property is bad.The present invention is by adding 0.008% lanthanum, cerium and yttrium mixed rare earth in melting, the interpolation lanthanum plays slag making when melting, may improve the surface quality of ferrimanganic copper-nickel tube; Adding cerium can crystal grain thinning, adds yttrium and can improve alloy plasticity (cold-forming property).So the performance of anti-erosion corrosion of copper pipe of the present invention and media-resistant corrosion life is very high in the similar trade mark.
2, melting and casting: well-known, the fusing point of nickel in order to guarantee billet crystalline homogeneity, adopts the mode of vibration continuous casting can improve billet crystalline homogeneity greatly than the fusing point height of copper.
3, 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 ferrimanganic copper-nickel tube, for example efficiently rolls the raising that the processing characteristics of tooth pipe can be big for needs.
4, stretch: because nickel content is higher in the material of the present invention, and iron, manganese content is also than higher, thus this control requires also relatively stricter to the tensile deformation coefficient.Coefficient of extension can be controlled in 1.1～1.3, can specify rational processing passage and reasonably join mold technique according to this coefficient of extension scope, and copper pipe stretches and rationally joins the scantlings of the structure that the mould key issue is optimization drawing die nib district.
5, flaw detection: because that the Alpaka pipe requires requirement than brazed copper tube 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.
Table one: the contrast of the different manganese content of the present invention mechanical property
| Chemical ingredients % (manganese) | Tensile strength kg/mm 2 | Elongation % |
| ??1 | ??52 | ??45 |
| Chemical ingredients % (manganese) | Tensile strength kg/mm 2 | Elongation % |
| ??2 | ??58 | ??39 |
| ??3 | ??62 | ??36 |
Table two: the present invention and the C71500 corrosion speed in various media
To sum up, the present invention is owing to added mishmetal in alloy, can improve the surface quality of billet, and refinement alloy grain, improve cold-forming property, thisly can in alloy, add better manganese and iron, and high manganese high ferro can improve the corrosion-resistant of ferrimanganic copper-nickel tube and abrasion resistance energy greatly.
(4) embodiment
The present invention relates to a kind of preparation method of ferrimanganic copper-nickel tube, the weight percent of described each element of ferrimanganic copper-nickel tube is:
Nickel 29-32%
Manganese 1.5-2.5%
Iron 1.7-2.3%
Mishmetal 0.008%
Surplus is an electrolytic copper
The summation of each element is 100%,
Described mishmetal by lanthanum, cerium and yttrium by lanthanum: cerium: the weight ratio of yttrium=2: 2: 1 mixes.
Its preparation method comprises following processing step:
Step 1, get electrolytic copper, nickel, manganese and iron by proportioning and place low frequency furnace, be heated to 1560～1610 ℃, fusing of margin refining limit vibration, and add mishmetal adopts the method for horizontal casting to be cast as the solid billet of φ 160nn * 250mm;
Step 2, fluid origin solid billet is heated to 1000-1050 ℃, is squeezed into the shell of φ 83mm * 11.5mm;
Step 3, the shell after will pushing are rolled into φ 45mm * 3.5mm, and its rolling feed is 3-5mm/ time, roll speed 140mm/ branch;
Step 4, the shell after rolling is stretched to φ 40mm * 3.2mm with stretching die, digs skin then, carry out two passages and stretch, be of a size of after two passages stretch and be respectively φ 35 * 2.65mm and φ 32 * 2.4mm digging shell behind the skin to φ 38mm; Shell after two passages stretch carries out process annealing, and annealing temperature is 800 ℃ ± 5 ℃, and annealing speed is 340mm/min ± 2mm/min;
Surface oxide layer is removed in step 5, pickling;
Step 6, the blank after the pickling is carried out multi-pass stretch, be of a size of after multi-pass stretches and be respectively φ 28 * 2.2mm, φ 26 * 2mm, φ 22 * 1.85mm and φ 19 * 1.78mm are until finished product;
By Zhi Jinhang eddy current test, the eddy current test gain is 31dB after step 7, alignment, scale, the cleaning, and phase place is 125Deg, is filtered into 15N, and frequency is 5KHz;
Step 8, finished products, annealing (soft attitude) temperature is 770 ℃ ± 5 ℃, annealing speed is 180-200mm/min.
Packing warehouse-in after step 9, 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 drawing-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. the preparation method of a ferrimanganic copper-nickel tube, it is characterized in that: the weight percent of described each element of ferrimanganic copper-nickel tube is:
Nickel 29-32%
Manganese 1.5-2.5%
Iron 1.7-2.3%
Mishmetal 0.008%
Surplus is an electrolytic copper
The summation of each element is 100%,
Described mishmetal by lanthanum, cerium and yttrium by lanthanum: cerium: the weight ratio of yttrium=2: 2: 1 mixes;
Its preparation method comprises following processing step:
Step 1, get electrolytic copper, nickel, manganese and iron by proportioning and place low frequency furnace, be heated to 1560～1610 ℃, fusing of margin refining limit vibration, and add mishmetal adopts the method for horizontal casting to be cast as the solid billet of φ 160nn * 250mm,
Step 2, fluid origin solid billet is heated to 1000-1050 ℃, is squeezed into the shell of φ 83mm * 11.5mm,
Step 3, the shell after will pushing are rolled into φ 45mm * 3.5mm, and its rolling feed is 3-5mm/ time, roll speed 140mm/ branch,
Step 4, the shell after rolling is stretched to φ 40mm * 3.2mm with stretching die, digs skin then, carry out two passages and stretch, be of a size of after two passages stretch and be respectively φ 35 * 2.65mm and φ 32 * 2.4mm digging shell behind the skin to φ 38mm; Shell after two passages stretch carries out process annealing, and annealing temperature is 800 ℃ ± 5 ℃, and annealing speed is 340mm/min ± 2mm/min,
Surface oxide layer is removed in step 5, pickling,
Step 6, the blank after the pickling is carried out multi-pass stretch, be of a size of after multi-pass stretches and be respectively φ 28 * 2.2mm, φ 26 * 2mm, φ 22 * 1.85mm and φ 19 * 1.78mm, until finished product,
By Zhi Jinhang eddy current test, the eddy current test gain is 31dB after step 7, alignment, scale, the cleaning, and phase place is 125Deg, is filtered into 15N, and frequency is 5KHz,
Step 8, finished products, annealing temperature are 770 ℃ ± 5 ℃, and annealing speed is 180-200mm/min;
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:
Lubricanting cone: the cone angle beta of Lubricanting cone=40 °, the length of Lubricanting cone is 0.6 times of calibrating strap diameter,
The work zone: the cone angle of work zone=11～12 °,
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 drawing-die diameter is at 20.1～40mm, and calibrating strap length is controlled at 1.5～2.0mm,
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.
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Cited By (9)
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| CN101966564A (en) * | 2010-10-09 | 2011-02-09 | 北京科技大学 | Hot-cold combined casting mould horizontal continuous casting equipment of cupronickel tubing and technology thereof |
| 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 |
| CN102059272A (en) * | 2010-12-01 | 2011-05-18 | 金川集团有限公司 | Method for horizontal continuous casting, Pilger rolling and continuous drawing of copper alloy condenser tube |
| CN102294579A (en) * | 2011-08-29 | 2011-12-28 | 西部钛业有限责任公司 | Method for manufacturing thin-wall and ultra-long nickel-copper alloy pipes |
| CN103337294A (en) * | 2013-06-06 | 2013-10-02 | 江阴新华宏铜业有限公司 | Railway through ground wire and preparation process thereof |
| CN104451251A (en) * | 2014-11-18 | 2015-03-25 | 北京科技大学 | High-iron cupronickel alloy pipe and short-process production method thereof |
| CN104480341A (en) * | 2014-11-28 | 2015-04-01 | 山东中佳新材料有限公司 | Heat-resistant and corrosion-resistant polybasic copper alloy and preparation system thereof |
| CN104694779A (en) * | 2015-01-16 | 2015-06-10 | 中国船舶重工集团公司第七二五研究所 | B30 material and preparation method thereof |
| CN105547029A (en) * | 2015-12-21 | 2016-05-04 | 江苏格林威尔金属材料科技有限公司 | Copper alloy internal groove circular tube used for air conditioner radiator |
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| AU2003292572A1 (en) * | 2003-12-19 | 2005-07-14 | Daido Steel Co., Ltd | Hot work tool steel and mold member excellent in resistance to melting |
| MXPA06011498A (en) * | 2004-04-05 | 2007-03-21 | Swissmetal Ums Usines Metallur | Free-cutting, lead-containing cu-ni-sn alloy and production method thereof. |
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| CN101966564A (en) * | 2010-10-09 | 2011-02-09 | 北京科技大学 | Hot-cold combined casting mould horizontal continuous casting equipment of cupronickel tubing and technology thereof |
| CN102059272A (en) * | 2010-12-01 | 2011-05-18 | 金川集团有限公司 | Method for horizontal continuous casting, Pilger rolling and continuous drawing of copper alloy condenser tube |
| 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 |
| CN102294579A (en) * | 2011-08-29 | 2011-12-28 | 西部钛业有限责任公司 | Method for manufacturing thin-wall and ultra-long nickel-copper alloy pipes |
| CN102294579B (en) * | 2011-08-29 | 2013-01-23 | 西部钛业有限责任公司 | Method for manufacturing thin-wall and ultra-long nickel-copper alloy pipes |
| CN103337294A (en) * | 2013-06-06 | 2013-10-02 | 江阴新华宏铜业有限公司 | Railway through ground wire and preparation process thereof |
| CN103337294B (en) * | 2013-06-06 | 2015-12-23 | 江阴新华宏铜业有限公司 | Railway run-through ground line and preparation technology thereof |
| CN104451251A (en) * | 2014-11-18 | 2015-03-25 | 北京科技大学 | High-iron cupronickel alloy pipe and short-process production method thereof |
| CN104451251B (en) * | 2014-11-18 | 2016-08-17 | 北京科技大学 | A kind of high ferro White brass alloy tubing and short-flow production method thereof |
| CN104480341A (en) * | 2014-11-28 | 2015-04-01 | 山东中佳新材料有限公司 | Heat-resistant and corrosion-resistant polybasic copper alloy and preparation system thereof |
| CN104694779A (en) * | 2015-01-16 | 2015-06-10 | 中国船舶重工集团公司第七二五研究所 | B30 material and preparation method thereof |
| CN105547029A (en) * | 2015-12-21 | 2016-05-04 | 江苏格林威尔金属材料科技有限公司 | Copper alloy internal groove circular tube used for air conditioner radiator |
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| CN101709407B (en) | 2011-09-28 |
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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. |