CN104862523A - Treatment process of copper pipe for double-metal air cooler - Google Patents
Treatment process of copper pipe for double-metal air cooler Download PDFInfo
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- CN104862523A CN104862523A CN201510291586.6A CN201510291586A CN104862523A CN 104862523 A CN104862523 A CN 104862523A CN 201510291586 A CN201510291586 A CN 201510291586A CN 104862523 A CN104862523 A CN 104862523A
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Abstract
The invention discloses a treatment process of a copper pipe for a double-metal air cooler. Rare earth elements are fed into a smelting furnace in three times in the smelting process, the mass of the rare earth elements fed each time is the same, and the rare earth comprises the following components in percentage by weight: 15-18% of Gd, 3-5% of Pr, 7-9% of Dy, 12.5-12.8% of Ac, 15-20% of Nd, 11-13% of Sm and the balance of La. Particularly, after deslagging treatment, the temperature of alloy liquid is reduced to 1145-1150 DEG C and heat preservation is performed for 20-30 minutes. The rare earth elements are added again after the furnace temperature is lowered to 1130-1140 DEG C. A refining agent is added at 1130-1140 DEG C, and degassing refining is carried out by argon for 5-10 minutes. The designed treatment process of the copper pipe for the double-metal air cooler has the advantages that the pipe is enabled to have the advantages of high temperature resistance, corrosion resistance and wear resistance; meanwhile, the production efficiency is greatly improved, customer requirements are met, the technical treatment process is reduced, and the production cost is further reduced.
Description
Technical field
The present invention relates to the section bar processing technology field of water cooler, particularly a kind for the treatment of process of bimetal air-cooler copper pipe.
Background technology
Nuclear power generating sets are often in high temperature, high pressure, high humidity environment, its axle is in continuously in high speed rotating, therefore for the vitals as nuclear power generating sets---water cooler, its material has very high requirement in high temperature resistant, corrosion-resistant, wear-resisting and the performance such as oilness, adaptability; Because nuclear power generating sets work operation life, turnaround etc. all require very long, therefore strict requirement is also had to the life-span of water cooler material, i.e. water cooler, especially heat transfer tube alloy needs to possess higher intensity and hardness, to bear the cyclic load shock and vibration of larger unit load and axle journal.
Manufacturer domestic is at present difficult to produce high performance heat transfer tube alloy, and can only rely on import completely, the water cooler once nuclear power generating sets goes wrong, and can only need to wait for that external manufacturer solves, waste a large amount of human and material resources and financial resources.
Summary of the invention
Technical problem to be solved by this invention is, overcomes the shortcoming of prior art, provides a kind for the treatment of process of bimetal air-cooler copper pipe.
In order to solve above technical problem, the invention provides a kind for the treatment of process of bimetal air-cooler copper pipe, comprising following concrete steps:
A: select alloy material as requested, its each weight percentages of components is C:0.25-0.28%, Si:0.26-0.28%, Mn:1.0-1.2%, P:0.020-0.030%, Al:0.7-0.9%, Cr:0.35-0.45%, Ni:0.45-0.52%, Mo:0.15-0.22%, V:0.02-0.03%, W:0.05-0.10%, Zn:12-15%, all the other are Cu and trace impurity;
B: dropped in smelting furnace by above-mentioned alloy material, and drop into rare earth element in smelting furnace, the gross weight of rare earth element is the 0.10-0.125% of above-mentioned alloy material; In rare earth, comprise following component by weight percentage: Gd:15-18%, Pr:3-5%, Dy:7-9%, Ac:12.5-12.8%, Nd:15-20%, Sm:11-13%, surplus is La;
C: smelting furnace temperature rise to 1510 DEG C-1540 DEG C, fully stirs, and be incubated 1-3h at 1510 DEG C-1540 DEG C after furnace charge all melts;
D: above-mentioned alloy liquid is naturally cooled to alloy liquid temperature 1180 DEG C-1270 DEG C, adds the rare earth element of quality same with step b again;
E: fully stir when alloy liquid greenhouse cooling to 1152 DEG C-1154 DEG C, and at 1152 DEG C-1154 DEG C, add refining agent refining slagging-off 5min-10min;
F: after Slag treatment, is down to 1145-1150 DEG C by alloy liquid temperature and is incubated 20min-30min, furnace temperature is down to 1130-1140 DEG C, again adds the rare earth element of quality same with step b; At temperature 1130-1140 DEG C, add refining agent, carry out refinery by de-gassing 5min-10min with argon gas;
G: alloy liquid homo(io)thermism cast at 1105-1100 DEG C, carries out successively subsequently extruding, sawing, aligns, rolls. system, dish draw, rewinding, annealing and drawing process.
Technique effect: bimetal air-cooler copper pipe treatment process in the present invention, the tensile strength of alloy material can reach more than 100MPa, Brinell hardness can reach more than 45, and ultimate compression strength can reach more than 200MPa, and yield strength can reach more than 90MPa; The heat transfer tube adopting the tubing after treatment process process designed by the present invention to prepare, can possess the advantages such as high temperature resistant, corrosion-resistant, wear-resisting and oilness is good; The refining agent that preparation process adds can solve the content of impurity element in alloy material effectively, thus considerably improves the mechanical property of alloy material;
Substantially increase production efficiency simultaneously, meet customer need, and decrease process treatment process, further reduce production cost.
The technical scheme that the present invention limits further is:
Further, the treatment process of aforesaid bimetal air-cooler copper pipe, comprises following concrete steps:
A: select alloy material as requested, its each weight percentages of components is C:0.25-0.28%, Si:0.26-0.28%, Mn:1.0-1.2%, P:0.020-0.030%, Al:0.7-0.9%, Cr:0.35-0.45%, Ni:0.45-0.52%, Mo:0.15-0.22%, V:0.02-0.03%, W:0.05-0.10%, Zn:12-15%, all the other are Cu and trace impurity;
B: dropped in smelting furnace by above-mentioned alloy material, and drop into rare earth element in smelting furnace, the gross weight of rare earth element is the 0.10-0.125% of above-mentioned alloy material; In rare earth, comprise following component by weight percentage: Gd:15-18%, Pr:3-5%, Dy:7-9%, Ac:12.5-12.8%, Nd:15-20%, Sm:11-13%, surplus is La;
C: smelting furnace temperature rise to 1510 DEG C, fully stirs after furnace charge all melts, and is incubated 1-3h at 1510 DEG C;
D: above-mentioned alloy liquid is naturally cooled to alloy liquid temperature 1180 DEG C, adds the rare earth element of quality same with step b again;
E: fully stir when alloy liquid greenhouse cooling to 1154 DEG C, and at 1154 DEG C, add refining agent refining slagging-off 5min-10min;
F: after Slag treatment, is down to 1145 DEG C by alloy liquid temperature and is incubated 20min-30min, furnace temperature is down to 1130 DEG C, again adds the rare earth element of quality same with step b; At temperature 1130 DEG C, add refining agent, carry out refinery by de-gassing 5min-10min with argon gas;
G: alloy liquid homo(io)thermism cast at 1105 DEG C, carries out successively subsequently extruding, sawing, aligns, rolls. system, dish draw, rewinding, annealing and drawing process.
The treatment process of aforesaid bimetal air-cooler copper pipe, in rare earth, comprises following component: Gd:16%, Pr:4%, Dy:8%, Ac:12.6%, Nd:16%, Sm:12% by weight percentage, and surplus is La.
The treatment process of aforesaid bimetal air-cooler copper pipe, casting speed is 2.5-3.5m/h;
In annealing operation, bright annealing oven is adopted to carry out clean annealing to the pipe after rewinding, annealing process Heating temperature: 360-600 DEG C, roller speed: 100-240mm/min, soaking time: 70-130min;
In drawing procedure: use associating cold drawing bench to carry out the vertical bar drawing processing of the large working modulus of last passage stretch process out tape to the pipe after annealing, coefficient of extension controls: between 1.40-1.60.
The treatment process of aforesaid bimetal air-cooler copper pipe, smelting furnace is intermediate frequency furnace, and whole preparation technology vibrates in intermediate frequency furnace under vacuum conditions airtightly to carry out melting.
The treatment process of aforesaid bimetal air-cooler copper pipe, refining agent is NH4Cl and rosin.
Embodiment
embodiment 1
The treatment process of a kind of bimetal air-cooler copper pipe that the present embodiment provides, comprises following concrete steps:
A: select alloy material as requested, its each weight percentages of components is C:0.25%, Si:0.28%, Mn:1.0%, P:0.030%, Al:0.7%, Cr:0.45%, Ni:0.45%, Mo:0.22%, V:0.02%, W:0.10%, Zn:12%, all the other are Cu and trace impurity;
B: dropped in smelting furnace by above-mentioned alloy material, and drop into rare earth element in smelting furnace, the gross weight of rare earth element is the 0.10-0.125% of above-mentioned alloy material; In rare earth, comprise following component by weight percentage: Gd:15%, Pr:3%, Dy:9%, Ac:12.5%, Nd:20%, Sm:11%, surplus is La;
C: smelting furnace temperature rise to 1510 DEG C-1540 DEG C, fully stirs, and be incubated 1-3h at 1510 DEG C-1540 DEG C after furnace charge all melts;
D: above-mentioned alloy liquid is naturally cooled to alloy liquid temperature 1180 DEG C-1270 DEG C, adds the rare earth element of quality same with step b again;
E: fully stir when alloy liquid greenhouse cooling to 1152 DEG C-1154 DEG C, and at 1152 DEG C-1154 DEG C, add refining agent refining slagging-off 5min-10min;
F: after Slag treatment, is down to 1145-1150 DEG C by alloy liquid temperature and is incubated 20min-30min, furnace temperature is down to 1130-1140 DEG C, again adds the rare earth element of quality same with step b; At temperature 1130-1140 DEG C, add refining agent, carry out refinery by de-gassing 5min-10min with argon gas;
G: alloy liquid homo(io)thermism cast at 1105-1100 DEG C, carries out successively subsequently extruding, sawing, aligns, rolls. system, dish draw, rewinding, annealing and drawing process;
The treatment process of aforesaid bimetal air-cooler copper pipe, casting speed is 2.5-3.5m/h;
In annealing operation, bright annealing oven is adopted to carry out clean annealing to the pipe after rewinding, annealing process Heating temperature: 360-600 DEG C, roller speed: 100-240mm/min, soaking time: 70-130min;
In drawing procedure: use associating cold drawing bench to carry out the vertical bar drawing processing of the large working modulus of last passage stretch process out tape to the pipe after annealing, coefficient of extension controls: between 1.40-1.60.
embodiment 2
The treatment process of a kind of bimetal air-cooler copper pipe that the present embodiment provides, comprises following concrete steps:
A: select alloy material as requested, its each weight percentages of components is C:0.25-0.28%, Si:0.26-0.28%, Mn:1.0-1.2%, P:0.020-0.030%, Al:0.7-0.9%, Cr:0.35-0.45%, Ni:0.45-0.52%, Mo:0.15-0.22%, V:0.02-0.03%, W:0.05-0.10%, Zn:12-15%, all the other are Cu and trace impurity;
B: dropped in smelting furnace by above-mentioned alloy material, and drop into rare earth element in smelting furnace, the gross weight of rare earth element is the 0.10-0.125% of above-mentioned alloy material; In rare earth, comprise following component by weight percentage: Gd:16%, Pr:4%, Dy:8%, Ac:12.6%, Nd:16%, Sm:12%, surplus is La;
C: smelting furnace temperature rise to 1510 DEG C, fully stirs after furnace charge all melts, and is incubated 1-3h at 1510 DEG C;
D: above-mentioned alloy liquid is naturally cooled to alloy liquid temperature 1180 DEG C, adds the rare earth element of quality same with step b again;
E: fully stir when alloy liquid greenhouse cooling to 1154 DEG C, and at 1154 DEG C, add refining agent refining slagging-off 5min-10min;
F: after Slag treatment, is down to 1145 DEG C by alloy liquid temperature and is incubated 20min-30min, furnace temperature is down to 1130 DEG C, again adds the rare earth element of quality same with step b; At temperature 1130 DEG C, add refining agent, carry out refinery by de-gassing 5min-10min with argon gas;
G: alloy liquid homo(io)thermism cast at 1105 DEG C, carries out successively subsequently extruding, sawing, aligns, rolls. system, dish draw, rewinding, annealing and drawing process;
The treatment process of aforesaid bimetal air-cooler copper pipe, casting speed is 2.5-3.5m/h;
In annealing operation, bright annealing oven is adopted to carry out clean annealing to the pipe after rewinding, annealing process Heating temperature: 360-600 DEG C, roller speed: 100-240mm/min, soaking time: 70-130min;
In drawing procedure: use associating cold drawing bench to carry out the vertical bar drawing processing of the large working modulus of last passage stretch process out tape to the pipe after annealing, coefficient of extension controls: between 1.40-1.60;
The treatment process of aforesaid bimetal air-cooler copper pipe, smelting furnace is intermediate frequency furnace, and whole preparation technology vibrates in intermediate frequency furnace under vacuum conditions airtightly to carry out melting;
The treatment process of aforesaid bimetal air-cooler copper pipe, refining agent is NH4Cl and rosin.
Above embodiment is only and technological thought of the present invention is described, can not limit protection scope of the present invention with this, and every technological thought proposed according to the present invention, any change that technical scheme basis is done, all falls within scope.
Claims (6)
1. a treatment process for bimetal air-cooler copper pipe, is characterized in that, comprises following concrete steps:
A: select alloy material as requested, its each weight percentages of components is C:0.25-0.28%, Si:0.26-0.28%, Mn:1.0-1.2%, P:0.020-0.030%, Al:0.7-0.9%, Cr:0.35-0.45%, Ni:0.45-0.52%, Mo:0.15-0.22%, V:0.02-0.03%, W:0.05-0.10%, Zn:12-15%, all the other are Cu and trace impurity;
B: dropped in smelting furnace by above-mentioned alloy material, and drop into rare earth element in smelting furnace, the gross weight of described rare earth element is the 0.10-0.125% of above-mentioned alloy material; In described rare earth, comprise following component by weight percentage: Gd:15-18%, Pr:3-5%, Dy:7-9%, Ac:12.5-12.8%, Nd:15-20%, Sm:11-13%, surplus is La;
C: smelting furnace temperature rise to 1510 DEG C-1540 DEG C, fully stirs, and be incubated 1-3h at 1510 DEG C-1540 DEG C after furnace charge all melts;
D: above-mentioned alloy liquid is naturally cooled to alloy liquid temperature 1180 DEG C-1270 DEG C, adds the rare earth element of quality same with step b again;
E: fully stir when alloy liquid greenhouse cooling to 1152 DEG C-1154 DEG C, and at 1152 DEG C-1154 DEG C, add refining agent refining slagging-off 5min-10min;
F: after Slag treatment, is down to 1145-1150 DEG C by alloy liquid temperature and is incubated 20min-30min, furnace temperature is down to 1130-1140 DEG C, again adds the rare earth element of quality same with step b; At temperature 1130-1140 DEG C, add refining agent, carry out refinery by de-gassing 5min-10min with argon gas;
G: alloy liquid homo(io)thermism cast at 1105-1100 DEG C, carries out successively subsequently extruding, sawing, aligns, rolls. system, dish draw, rewinding, annealing and drawing process.
2. the treatment process of bimetal air-cooler copper pipe according to claim 1, is characterized in that, comprise following concrete steps:
A: select alloy material as requested, its each weight percentages of components is C:0.25-0.28%, Si:0.26-0.28%, Mn:1.0-1.2%, P:0.020-0.030%, Al:0.7-0.9%, Cr:0.35-0.45%, Ni:0.45-0.52%, Mo:0.15-0.22%, V:0.02-0.03%, W:0.05-0.10%, Zn:12-15%, all the other are Cu and trace impurity;
B: dropped in smelting furnace by above-mentioned alloy material, and drop into rare earth element in smelting furnace, the gross weight of described rare earth element is the 0.10-0.125% of above-mentioned alloy material; In described rare earth, comprise following component by weight percentage: Gd:15-18%, Pr:3-5%, Dy:7-9%, Ac:12.5-12.8%, Nd:15-20%, Sm:11-13%, surplus is La;
C: smelting furnace temperature rise to 1510 DEG C, fully stirs after furnace charge all melts, and is incubated 1-3h at 1510 DEG C;
D: above-mentioned alloy liquid is naturally cooled to alloy liquid temperature 1180 DEG C, adds the rare earth element of quality same with step b again;
E: fully stir when alloy liquid greenhouse cooling to 1154 DEG C, and at 1154 DEG C, add refining agent refining slagging-off 5min-10min;
F: after Slag treatment, is down to 1145 DEG C by alloy liquid temperature and is incubated 20min-30min, furnace temperature is down to 1130 DEG C, again adds the rare earth element of quality same with step b; At temperature 1130 DEG C, add refining agent, carry out refinery by de-gassing 5min-10min with argon gas;
G: alloy liquid homo(io)thermism cast at 1105 DEG C, carries out successively subsequently extruding, sawing, aligns, rolls. system, dish draw, rewinding, annealing and drawing process.
3. the treatment process of bimetal air-cooler copper pipe according to claim 2, is characterized in that, in described rare earth, comprises following component by weight percentage: Gd:16%, Pr:4%, Dy:8%, Ac:12.6%, Nd:16%, Sm:12%, surplus is La.
4. according to the treatment process of the bimetal air-cooler copper pipe in claims 1 to 3 described in any one claim, it is characterized in that, described casting speed is 2.5-3.5m/h;
In described annealing operation, bright annealing oven is adopted to carry out clean annealing to the pipe after rewinding, annealing process Heating temperature: 360-600 DEG C, roller speed: 100-240mm/min, soaking time: 70-130min;
In described drawing procedure: use associating cold drawing bench to carry out the vertical bar drawing processing of the large working modulus of last passage stretch process out tape to the pipe after annealing, coefficient of extension controls: between 1.40-1.60.
5. the treatment process of bimetal air-cooler copper pipe according to claim 4, is characterized in that, described smelting furnace is intermediate frequency furnace, and whole preparation technology vibrates in intermediate frequency furnace under vacuum conditions airtightly to carry out melting.
6. the treatment process of bimetal air-cooler copper pipe according to claim 1, is characterized in that, described refining agent is NH4Cl and rosin.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105749709A (en) * | 2016-05-06 | 2016-07-13 | 江苏金源腾峰换热设备有限公司 | Boiler flue gas purifying and heat exchanging device and application method thereof |
| CN108018459A (en) * | 2017-12-17 | 2018-05-11 | 博维恩冷冻科技（苏州）有限公司 | A kind of processing technology of heat exchanger tube |
| CN108405820A (en) * | 2018-03-23 | 2018-08-17 | 江西鸥迪铜业有限公司 | A kind of horizontal casting Rolling Production brass tube technique |
-
2015
- 2015-06-01 CN CN201510291586.6A patent/CN104862523A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105749709A (en) * | 2016-05-06 | 2016-07-13 | 江苏金源腾峰换热设备有限公司 | Boiler flue gas purifying and heat exchanging device and application method thereof |
| CN108018459A (en) * | 2017-12-17 | 2018-05-11 | 博维恩冷冻科技（苏州）有限公司 | A kind of processing technology of heat exchanger tube |
| CN108405820A (en) * | 2018-03-23 | 2018-08-17 | 江西鸥迪铜业有限公司 | A kind of horizontal casting Rolling Production brass tube technique |
| CN108405820B (en) * | 2018-03-23 | 2019-11-26 | 江西鸥迪铜业有限公司 | A kind of horizontal casting Rolling Production brass tube technique |
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Application publication date: 20150826 |