CN104032185A - Method for manufacturing high-hardness wear-resisting valve - Google Patents
Method for manufacturing high-hardness wear-resisting valve Download PDFInfo
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- CN104032185A CN104032185A CN201410211016.7A CN201410211016A CN104032185A CN 104032185 A CN104032185 A CN 104032185A CN 201410211016 A CN201410211016 A CN 201410211016A CN 104032185 A CN104032185 A CN 104032185A
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Abstract
The invention relates to the field of valve manufacturing, in particular to a method for manufacturing a high-hardness wear-resisting valve. According to the method for manufacturing the high-hardness wear-resisting valve, the valve is manufactured through steps of smelting, primary degumming, refining, repeated refining, pouring, shakeout, cleaning, heat treatment and the like of raw materials, and therefore the problems that the valve is low in intensity and poor in wear resistance are solved.
Description
Technical field
The present invention relates to valve and manufactured field, related in particular to a kind of preparation method of high hardness wear-resisting valve.
Background technology
At present, valve is often applied to the industrial circles such as oil, chemical industry, metallurgy, and the preparation material used of valve is often metallic substance, and in need to improving the hardness of metal, its wear resistance also needs to improve.
Summary of the invention
The deficiency existing for prior art, object of the present invention is just to provide a kind of preparation method of high hardness wear-resisting valve, has solved the low problem with wearing no resistance of valve intensity.
To achieve these goals, the technical solution used in the present invention is such:
A preparation method for high hardness wear-resisting valve, is characterized in that, comprises the following steps:
(1) raw material: prepare the described raw material for the manufacture of valve, described raw material contains Cu, Sn, Zn, Pb, P, Ni, Al, Fe, Sb and Si, described each component content Sn1.9 ~ 4.2%, Zn5.8 ~ 9.1%, Pb3.85 ~ 7.12%, P0.01 ~ 0.05%, Ni0.5 ~ 1.5%, Al0.01 ~ 0.02%, Fe0.01 ~ 0.4%, Sb0.01 ~ 0.3%, Si0.01 ~ 0.02% and all the other are Cu, and wherein the total content of impurity P, Al, Fe, Sb, Si is no more than 1.0%;
(2) raw material melting: be aluminium alloy by putting into melting equipment melting for the manufacture of the raw material of valve, temperature be controlled to 1200-1250 DEG C, and keep 1h;
(3) just refining: use slag former to carry out slag making, and by furnace bottom nozzle, bottom blown gas is blown in melting equipment; Stir aluminium alloy;
(4) refining: the aluminium alloy refining at the beginning of completing is transferred to vacuum or is full of in the container of rare gas element and carry out deoxidation, degassed and desulfurization, reductor is added on the liquid level of the aluminium alloy just refining, make to carry out deoxidation on interface, reductor has charcoal, carbide of calcium, boronation magnesium, boron slag, these reductors are captured oxygen copper reduction out, resultant floating slagging venting, and by the mass parts of spectrum analyzer and density tester acquisition inclusion;
(5) refining repeatedly: repeating step (4), until the mass parts of the inclusion containing in aluminium alloy is without obviously reducing or having reached minimum;
(6) valve cast: aluminium alloy is warming up to 1150-1200 DEG C, the calmness of coming out of the stove; After calm 10-15min, aluminium alloy is cast in mould, forms valve part;
(7) knockout: when the valve part in step (6) is cooled to 400 ~ 500 DEG C by the time, first make valve part separate with sandbox, then make it separate with molding sand;
(8) cleaning: the valve part from step (7) is removed and watered, rising head, removes remaining core sand, removes scab, burr, the oxide skin on valve part surface;
(9) thermal treatment: the valve part of step (8) is put into electric furnace, according to not being warming up to 850-950 DEG C higher than the speed of 72 DEG C/h, insulation 4-5h, stove is chilled to room temperature; Again according to not being warming up to 720-780 DEG C higher than 88 DEG C/h, after insulation 3.5-4h, come out of the stove, at the quenching-in water of 55-70 DEG C to 270-350 DEG C; Return in electric furnace and be warming up to 350-400 DEG C, carry out low-temperaturetempering processing, after insulation 5h, the air cooling of coming out of the stove;
(10) anneal: valve part is heated to 880-920 DEG C, insulation 4-5h, then be cooled to 620-660 DEG C with the speed of 50-60 DEG C/h, the air cooling of coming out of the stove;
(11) valve inner surface treatment: the valve internal surface after annealing air cooling is carried out to degreasing and dry, clean draining, use lubricating fluid to soak, form lubricated dry film;
(12) dry for standby: the container of the valve part of handling well being put into 60-70 DEG C is dried, and is incubated 1-1.5h.
As a kind of preferred version, the slag former in described step (3) is low-carbon (LC) submerged arc slag former or converter low-carbon (LC) slag former; Bottom blown gas is Ar, N
2, CO
2or CH
4.
As a kind of preferred version, a kind of melting technology of high hardness wear-resisting valve raw material comprises the following steps:
(1) order of blanking is: first add nickel and part fritter electrolytic copper, improve temperature to 1500-1550 DEG C;
(2) after step (1), add again 2/3rds phosphor-coppers, then behind cooling temperature to 1100 ± 5 DEG C, add zinc;
(3) after step (2), add successively remaining electrolytic copper, tin, lead, finally add remaining phosphor-copper, fully stir;
(4) aluminium alloy of step (3) is passed through to the semicontinuous ingot casting method casting blank formation of direct water-cooling.
Compared with prior art, beneficial effect of the present invention: wear resistance is better, easily processing, good casting property, resistance to air loss is better, corrosion-resistant, can under flowing seawater, work.
Embodiment
Below in conjunction with specific embodiment, the present invention is further described.
Embodiment 1:
A preparation method for high hardness wear-resisting valve, is characterized in that, comprises the following steps:
(1) raw material: prepare the described raw material for the manufacture of valve, described raw material contains Cu, Sn, Zn, Pb, P, Ni, Al, Fe, Sb and Si, described each component content Sn1.9 ~ 4.2%, Zn5.8 ~ 9.1%, Pb3.85 ~ 7.12%, P0.01 ~ 0.05%, Ni0.5 ~ 1.5%, Al0.01 ~ 0.02%, Fe0.01 ~ 0.4%, Sb0.01 ~ 0.3%, Si0.01 ~ 0.02% and all the other are Cu, and wherein the total content of impurity P, Al, Fe, Sb, Si is no more than 1.0%;
(2) raw material melting: be aluminium alloy by putting into melting equipment melting for the manufacture of the raw material of valve, temperature be controlled to 1200-1250 DEG C, and keep 1h;
(3) just refining: use slag former to carry out slag making, and by furnace bottom nozzle, bottom blown gas is blown in melting equipment; Stir aluminium alloy;
(4) refining: the aluminium alloy refining at the beginning of completing is transferred to vacuum or is full of in the container of rare gas element and carry out deoxidation, degassed and desulfurization, reductor is added on the liquid level of the aluminium alloy just refining, make to carry out deoxidation on interface, reductor has charcoal, carbide of calcium, boronation magnesium, boron slag, these reductors are captured oxygen copper reduction out, resultant floating slagging venting, and by the mass parts of spectrum analyzer and density tester acquisition inclusion;
(5) refining repeatedly: repeating step (4), until the mass parts of the inclusion containing in aluminium alloy is without obviously reducing or having reached minimum;
(6) valve cast: aluminium alloy is warming up to 1150-1200 DEG C, the calmness of coming out of the stove; After calm 10-15min, aluminium alloy is cast in mould, forms valve part;
(7) knockout: when the valve part in step (6) is cooled to 400 ~ 500 DEG C by the time, first make valve part separate with sandbox, then make it separate with molding sand;
(8) cleaning: the valve part from step (7) is removed and watered, rising head, removes remaining core sand, removes scab, burr, the oxide skin on valve part surface;
(9) thermal treatment: the valve part of step (8) is put into electric furnace, according to not being warming up to 850-950 DEG C higher than the speed of 72 DEG C/h, insulation 4-5h, stove is chilled to room temperature; Again according to not being warming up to 720-780 DEG C higher than 88 DEG C/h, after insulation 3.5-4h, come out of the stove, at the quenching-in water of 55-70 DEG C to 270-350 DEG C; Return in electric furnace and be warming up to 350-400 DEG C, carry out low-temperaturetempering processing, after insulation 5h, the air cooling of coming out of the stove;
(10) anneal: valve part is heated to 880-920 DEG C, insulation 4-5h, then be cooled to 620-660 DEG C with the speed of 50-60 DEG C/h, the air cooling of coming out of the stove;
(11) valve inner surface treatment: the valve internal surface after annealing air cooling is carried out to degreasing and dry, clean draining, use lubricating fluid to soak, form lubricated dry film;
(12) dry for standby: the container of the valve part of handling well being put into 60-70 DEG C is dried, and is incubated 1-1.5h.
Slag former in described step (3) is low-carbon (LC) submerged arc slag former or converter low-carbon (LC) slag former; Bottom blown gas is Ar, N
2, CO
2or CH
4.
Embodiment 2:
A kind of melting technology of high hardness wear-resisting valve raw material comprises the following steps:
(1) order of blanking is: first add nickel and part fritter electrolytic copper, improve temperature to 1500-1550 DEG C;
(2) after step (1), add again 2/3rds phosphor-coppers, then behind cooling temperature to 1100 ± 5 DEG C, add zinc;
(3) after step (2), add successively remaining electrolytic copper, tin, lead, finally add remaining phosphor-copper, fully stir;
(4) aluminium alloy of step (3) is passed through to the semicontinuous ingot casting method casting blank formation of direct water-cooling.
Finished product is tested, and obtaining product strength is 0.21MPa.
Finally it should be noted that, above embodiment is the non-limiting technical scheme in order to technical scheme of the present invention to be described only, those of ordinary skill in the art is to be understood that, those are modified or are equal to replacement technical scheme of the present invention, and do not depart from aim and the scope of the technical program, all should be encompassed in the middle of claim scope of the present invention.
Claims (3)
1. a preparation method for high hardness wear-resisting valve, is characterized in that, comprises the following steps:
(1) raw material: prepare the described raw material for the manufacture of valve, described raw material contains Cu, Sn, Zn, Pb, P, Ni, Al, Fe, Sb and Si, described each component content Sn1.9 ~ 4.2%, Zn5.8 ~ 9.1%, Pb3.85 ~ 7.12%, P0.01 ~ 0.05%, Ni0.5 ~ 1.5%, Al0.01 ~ 0.02%, Fe0.01 ~ 0.4%, Sb0.01 ~ 0.3%, Si0.01 ~ 0.02% and all the other are Cu, and wherein the total content of impurity P, Al, Fe, Sb, Si is no more than 1.0%;
(2) raw material melting: be aluminium alloy by putting into melting equipment melting for the manufacture of the raw material of valve, temperature be controlled to 1200-1250 DEG C, and keep 1h;
(3) just refining: use slag former to carry out slag making, and by furnace bottom nozzle, bottom blown gas is blown in melting equipment; Stir aluminium alloy;
(4) refining: the aluminium alloy refining at the beginning of completing is transferred to vacuum or is full of in the container of rare gas element and carry out deoxidation, degassed and desulfurization, reductor is added on the liquid level of the aluminium alloy just refining, make to carry out deoxidation on interface, reductor has charcoal, carbide of calcium, boronation magnesium, boron slag, these reductors are captured oxygen copper reduction out, resultant floating slagging venting, and by the mass parts of spectrum analyzer and density tester acquisition inclusion;
(5) refining repeatedly: repeating step (4), until the mass parts of the inclusion containing in aluminium alloy is without obviously reducing or having reached minimum;
(6) valve cast: aluminium alloy is warming up to 1150-1200 DEG C, the calmness of coming out of the stove; After calm 10-15min, aluminium alloy is cast in mould, forms valve part;
(7) knockout: when the valve part in step (6) is cooled to 400 ~ 500 DEG C by the time, first make valve part separate with sandbox, then make it separate with molding sand;
(8) cleaning: the valve part from step (7) is removed and watered, rising head, removes remaining core sand, removes scab, burr, the oxide skin on valve part surface;
(9) thermal treatment: the valve part of step (8) is put into electric furnace, according to not being warming up to 850-950 DEG C higher than the speed of 72 DEG C/h, insulation 4-5h, stove is chilled to room temperature; Again according to not being warming up to 720-780 DEG C higher than 88 DEG C/h, after insulation 3.5-4h, come out of the stove, at the quenching-in water of 55-70 DEG C to 270-350 DEG C; Return in electric furnace and be warming up to 350-400 DEG C, carry out low-temperaturetempering processing, after insulation 5h, the air cooling of coming out of the stove;
(10) anneal: valve part is heated to 880-920 DEG C, insulation 4-5h, then be cooled to 620-660 DEG C with the speed of 50-60 DEG C/h, the air cooling of coming out of the stove;
(11) valve inner surface treatment: the valve internal surface after annealing air cooling is carried out to degreasing and dry, clean draining, use lubricating fluid to soak, form lubricated dry film;
(12) dry for standby: the container of the valve part of handling well being put into 60-70 DEG C is dried, and is incubated 1-1.5h.
2. the preparation method of a kind of high hardness wear-resisting valve according to claim 1, is characterized in that: the slag former in described step (3) is low-carbon (LC) submerged arc slag former or converter low-carbon (LC) slag former; Bottom blown gas is Ar, N
2, CO
2or CH
4.
3. the preparation method of a kind of high hardness wear-resisting valve according to claim 1, is characterized in that: the melting technology of described high hardness wear-resisting valve raw material comprises the following steps:
(1) order of blanking is: first add nickel and part fritter electrolytic copper, improve temperature to 1500-1550 DEG C;
(2) after step (1), add again 2/3rds phosphor-coppers, then behind cooling temperature to 1100 ± 5 DEG C, add zinc;
(3) after step (2), add successively remaining electrolytic copper, tin, lead, finally add remaining phosphor-copper, fully stir;
(4) aluminium alloy of step (3) is passed through to the semicontinuous ingot casting method casting blank formation of direct water-cooling.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410211016.7A CN104032185B (en) | 2014-05-19 | 2014-05-19 | The preparation method of a kind of high hardness wear-resisting valve |
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|---|---|---|---|
| CN201410211016.7A CN104032185B (en) | 2014-05-19 | 2014-05-19 | The preparation method of a kind of high hardness wear-resisting valve |
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| CN104032185B CN104032185B (en) | 2016-06-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116005064A (en) * | 2023-02-09 | 2023-04-25 | 陕西特装科技有限公司 | Graphene reinforced valve and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101148714A (en) * | 2007-10-29 | 2008-03-26 | 北京科技大学 | High-voltage resistant casting copper alloy |
| CN102808105A (en) * | 2012-08-24 | 2012-12-05 | 李伟 | Method for preparing shape memory copper alloy |
-
2014
- 2014-05-19 CN CN201410211016.7A patent/CN104032185B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101148714A (en) * | 2007-10-29 | 2008-03-26 | 北京科技大学 | High-voltage resistant casting copper alloy |
| CN102808105A (en) * | 2012-08-24 | 2012-12-05 | 李伟 | Method for preparing shape memory copper alloy |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116005064A (en) * | 2023-02-09 | 2023-04-25 | 陕西特装科技有限公司 | Graphene reinforced valve and preparation method thereof |
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| CN104032185B (en) | 2016-06-01 |
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