CN104152782A - Process method for casting corrosion-resistant heat-resistant steel by induction furnace - Google Patents
Process method for casting corrosion-resistant heat-resistant steel by induction furnace Download PDFInfo
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- CN104152782A CN104152782A CN201410366587.8A CN201410366587A CN104152782A CN 104152782 A CN104152782 A CN 104152782A CN 201410366587 A CN201410366587 A CN 201410366587A CN 104152782 A CN104152782 A CN 104152782A
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Abstract
The invention discloses a process method for casting corrosion-resistant heat-resistant steel by an induction furnace. The process method disclosed by the invention takes an operating process that smelting is started from packing and finished by casting into consideration. The process method not only tries to realize fast smelting, but also remarkably enhances the process integrity of refining, deoxygenating and deteriorating. According to the method disclosed by the invention, fast and accurate temperature information is provided to important monitor points in the smelting process by virtue of a modern temperature measuring instrument, so that the control effect of casting is improved.
Description
Technical field
The present invention relates to high-abrasive material treatment process field, relate in particular to a kind of processing method with induction furnace casting wear-resistant erosion high temperature steel.
Background technology
The domestic medium-sized and small enterprises with induction furnace production erosion resistant, heat-resistant casting steel are all realized this class steel casting and are had in process of production more outstanding metallurgy characteristic.With regard to melting aspect, control the bad major cause that produces often be full of cracks, directivity crackle, elephant skin, pore, slag inclusion and various simple or combined type shrink defects, therefore by controlling smelting temperature, tapping temperature, teeming temperature and carrying out all conventional melting technologies to controlling the larger effect of casting quality generation.But on producing, also Chang Yin runs into some technical measures that adopted all castings, melting aspect and still can not effectively overcome the problem of casting defect, produce to tissue and the performance of enterprises is brought certain difficulty and loses.Investigate by production, in these problems quite a few be due to lack understanding to refining effect or because of fusion process in the refining means taked ineffective, method is improper causes.Based on this, now study a kind of processing method with induction furnace casting wear-resistant erosion high temperature steel.
Summary of the invention
The defect existing in order to overcome above-mentioned prior art, the invention provides the processing method with induction furnace casting wear-resistant erosion high temperature steel that a kind of technique is simple, can effectively improve high-abrasive material quality.
Technical problem solved by the invention can adopt following technical scheme to realize:
By a processing method for induction furnace casting wear-resistant erosion high temperature steel, it is characterized in that, comprise the following steps:
(1) in fusing and molten steel superheating process, drop into selectively 5%～10% steel scrap bits according to melting operating mode, wherein oxidation of coal generates CO, causes molten steel to float.
(2) adopt comprehensive reductor better than the deoxidation effect of independent use aluminium, manganese, silicon, calcium.It is much bigger that the deoxidation products size of comprehensive reductor produces than independent reductor, is easy to get rid of from molten steel, effectively reduces inclusion, thereby obviously reduce crackle tendency.
(3) 0.8%～1.4% rare earth ferrosilicon alloy is come out of the stove respectively after deoxidation before and go out the molten steel time-division and add for 2 times.As the additive of molten steel, rare earth can play the effect of reductive agent, reductor, sweetening agent, getter, alterant, adjusting material, and the effect of its actual performance is determined by technique and working condition.After deoxidation, rare earth ferrosilicon alloy is dropped in stove, play on the one hand further cleaning molten steel effect, on the other hand owing to making molten steel Quench tendency increase the effect of playing refinement primary crystal tissue; When tapping, in stokehold, rare earth ferrosilicon alloy is poured in casting ladle with stream, both can maintain the oxygen activity after steel liquid deoxidation, can play again alterant effect, promote crystal boundary to purify, obviously change size, form and the minimizing quantity of nonmetal inclusion, crystal grain thinning.
(4) fast melting.Fast melting not only can be realized economize on electricity, energy-conservation, reduces alloying element scaling loss, is also an essential condition that obtains to greatest extent high-quality melting.In fusion process, use temperature measurer to measure temperature, thereby for correct formulate the processing parameter of this type of alloy steel grade smelting temperature and effectively control aborning rotten and other core process quality point of deoxidation, " secondary treatment method " foundation is provided, guarantee realizes the fast melting on practical significance.
(5) casting mold is used to quick-drying alcohol-base paint, can obtain high-quality erosion resistant high temperature steel.
Preferably, the content of the bits of the steel scrap in described step (1) is 5%.
Preferably, the content of the bits of the steel scrap in described step (1) is 7.5%.
Preferably, the content of the bits of the steel scrap in described step (1) is 10%.
Preferably, in described step (2), comprehensive reductor is the comprehensive reductor of manganese sial calcium.
Preferably, in described step (4), temperature measurer is infrared thermometer.
Beneficial effect of the present invention is: the present invention considers that melting is from the bedding and padding beginning to cast operating process only, should strive for fast melting, the technique globality of outstanding strengthening refining, deoxidation, rotten this three step again, the present invention uses modern temperature measuring device to provide temperature information fast and accurately to the important control point of fusion process, has improved the control action kou of casting.
Embodiment
Below in conjunction with specific embodiment, technical scheme of the present invention is further described in detail:
Embodiment 1
By a processing method for induction furnace casting wear-resistant erosion high temperature steel, comprise the following steps:
(1) in fusing and molten steel superheating process, drop into selectively 5% steel scrap bits according to melting operating mode, wherein oxidation of coal generates CO, causes molten steel to float.
(2) adopt comprehensive reductor better than the deoxidation effect of independent use aluminium, manganese, silicon, calcium.It is much bigger that the deoxidation products size of comprehensive reductor produces than independent reductor, is easy to get rid of from molten steel, effectively reduces inclusion, thereby obviously reduce crackle tendency.
(3) 0.8% rare earth ferrosilicon alloy is come out of the stove respectively after deoxidation before and go out the molten steel time-division and add for 2 times.As the additive of molten steel, rare earth can play the effect of reductive agent, reductor, sweetening agent, getter, alterant, adjusting material, and the effect of its actual performance is determined by technique and working condition.After deoxidation, rare earth ferrosilicon alloy is dropped in stove, play on the one hand further cleaning molten steel effect, on the other hand owing to making molten steel Quench tendency increase the effect of playing refinement primary crystal tissue; When tapping, in stokehold, rare earth ferrosilicon alloy is poured in casting ladle with stream, both can maintain the oxygen activity after steel liquid deoxidation, can play again alterant effect, promote crystal boundary to purify, obviously change size, form and the minimizing quantity of nonmetal inclusion, crystal grain thinning.
(4) fast melting.Fast melting not only can be realized economize on electricity, energy-conservation, reduces alloying element scaling loss, is also an essential condition that obtains to greatest extent high-quality melting.In fusion process, use temperature measurer to measure temperature, thereby for correct formulate the processing parameter of this type of alloy steel grade smelting temperature and effectively control aborning rotten and other core process quality point of deoxidation, " secondary treatment method " foundation is provided, guarantee realizes the fast melting on practical significance.
(5) casting mold is used to quick-drying alcohol-base paint, can obtain high-quality erosion resistant high temperature steel.
Beneficial effect of the present invention is: the present invention considers that melting is from the bedding and padding beginning to cast operating process only, should strive for fast melting, the technique globality of outstanding strengthening refining, deoxidation, rotten this three step again, the present invention uses modern temperature measuring device to provide temperature information fast and accurately to the important control point of fusion process, has improved the control action kou of casting.
Embodiment 2
By a processing method for induction furnace casting wear-resistant erosion high temperature steel, comprise the following steps:
(1) in fusing and molten steel superheating process, drop into selectively 10% steel scrap bits according to melting operating mode, wherein oxidation of coal generates CO, causes molten steel to float.
(2) adopt comprehensive reductor better than the deoxidation effect of independent use aluminium, manganese, silicon, calcium.It is much bigger that the deoxidation products size of comprehensive reductor produces than independent reductor, is easy to get rid of from molten steel, effectively reduces inclusion, thereby obviously reduce crackle tendency.
(3) 1.4% rare earth ferrosilicon alloy is come out of the stove respectively after deoxidation before and go out the molten steel time-division and add for 2 times.As the additive of molten steel, rare earth can play the effect of reductive agent, reductor, sweetening agent, getter, alterant, adjusting material, and the effect of its actual performance is determined by technique and working condition.After deoxidation, rare earth ferrosilicon alloy is dropped in stove, play on the one hand further cleaning molten steel effect, on the other hand owing to making molten steel Quench tendency increase the effect of playing refinement primary crystal tissue; When tapping, in stokehold, rare earth ferrosilicon alloy is poured in casting ladle with stream, both can maintain the oxygen activity after steel liquid deoxidation, can play again alterant effect, promote crystal boundary to purify, obviously change size, form and the minimizing quantity of nonmetal inclusion, crystal grain thinning.
(4) fast melting.Fast melting not only can be realized economize on electricity, energy-conservation, reduces alloying element scaling loss, is also an essential condition that obtains to greatest extent high-quality melting.In fusion process, use temperature measurer to measure temperature, thereby for correct formulate the processing parameter of this type of alloy steel grade smelting temperature and effectively control aborning rotten and other core process quality point of deoxidation, " secondary treatment method " foundation is provided, guarantee realizes the fast melting on practical significance.
(5) casting mold is used to quick-drying alcohol-base paint, can obtain high-quality erosion resistant high temperature steel.
Beneficial effect of the present invention is: the present invention considers that melting is from the bedding and padding beginning to cast operating process only, should strive for fast melting, the technique globality of outstanding strengthening refining, deoxidation, rotten this three step again, the present invention uses modern temperature measuring device to provide temperature information fast and accurately to the important control point of fusion process, has improved the control action kou of casting.
Embodiment 3
By a processing method for induction furnace casting wear-resistant erosion high temperature steel, comprise the following steps:
(1) in fusing and molten steel superheating process, drop into selectively 7.5% steel scrap bits according to melting operating mode, wherein oxidation of coal generates CO, causes molten steel to float.
(2) adopt comprehensive reductor better than the deoxidation effect of independent use aluminium, manganese, silicon, calcium.It is much bigger that the deoxidation products size of comprehensive reductor produces than independent reductor, is easy to get rid of from molten steel, effectively reduces inclusion, thereby obviously reduce crackle tendency.
(3) 1.1% rare earth ferrosilicon alloy is come out of the stove respectively after deoxidation before and go out the molten steel time-division and add for 2 times.As the additive of molten steel, rare earth can play the effect of reductive agent, reductor, sweetening agent, getter, alterant, adjusting material, and the effect of its actual performance is determined by technique and working condition.After deoxidation, rare earth ferrosilicon alloy is dropped in stove, play on the one hand further cleaning molten steel effect, on the other hand owing to making molten steel Quench tendency increase the effect of playing refinement primary crystal tissue; When tapping, in stokehold, rare earth ferrosilicon alloy is poured in casting ladle with stream, both can maintain the oxygen activity after steel liquid deoxidation, can play again alterant effect, promote crystal boundary to purify, obviously change size, form and the minimizing quantity of nonmetal inclusion, crystal grain thinning.
(4) fast melting.Fast melting not only can be realized economize on electricity, energy-conservation, reduces alloying element scaling loss, is also an essential condition that obtains to greatest extent high-quality melting.In fusion process, use temperature measurer to measure temperature, thereby for correct formulate the processing parameter of this type of alloy steel grade smelting temperature and effectively control aborning rotten and other core process quality point of deoxidation, " secondary treatment method " foundation is provided, guarantee realizes the fast melting on practical significance.
(5) casting mold is used to quick-drying alcohol-base paint, can obtain high-quality erosion resistant high temperature steel.
Beneficial effect of the present invention is: the present invention considers that melting is from the bedding and padding beginning to cast operating process only, should strive for fast melting, the technique globality of outstanding strengthening refining, deoxidation, rotten this three step again, the present invention uses modern temperature measuring device to provide temperature information fast and accurately to the important control point of fusion process, has improved the control action kou of casting.
It should be noted last that, above embodiment is only unrestricted in order to technical scheme of the present invention to be described, although the present invention is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement technical scheme of the present invention, and not departing from the spirit and scope of technical solution of the present invention, it all should be encompassed in the middle of claim scope of the present invention.
Claims (6)
1. by a processing method for induction furnace casting wear-resistant erosion high temperature steel, it is characterized in that, comprise the following steps:
(1) in fusing and molten steel superheating process, drop into selectively 5%～10% steel scrap bits according to melting operating mode, wherein oxidation of coal generates CO, causes molten steel to float;
(2) adopt comprehensive reductor better than the deoxidation effect of independent use aluminium, manganese, silicon, calcium.It is much bigger that the deoxidation products size of comprehensive reductor produces than independent reductor, is easy to get rid of from molten steel, effectively reduces inclusion, thereby obviously reduce crackle tendency;
(3) 0.8%～1.4% rare earth ferrosilicon alloy is come out of the stove respectively after deoxidation before and go out the molten steel time-division and add for 2 times.As the additive of molten steel, rare earth can play the effect of reductive agent, reductor, sweetening agent, getter, alterant, adjusting material, and the effect of its actual performance is determined by technique and working condition.After deoxidation, rare earth ferrosilicon alloy is dropped in stove, play on the one hand further cleaning molten steel effect, on the other hand owing to making molten steel Quench tendency increase the effect of playing refinement primary crystal tissue; When tapping, in stokehold, rare earth ferrosilicon alloy is poured in casting ladle with stream, both can maintain the oxygen activity after steel liquid deoxidation, can play again alterant effect, promote crystal boundary to purify, obviously change size, form and the minimizing quantity of nonmetal inclusion, crystal grain thinning;
(4) fast melting.Fast melting not only can be realized economize on electricity, energy-conservation, reduces alloying element scaling loss, is also an essential condition that obtains to greatest extent high-quality melting.In fusion process, use temperature measurer to measure temperature, thereby for correct formulate the processing parameter of this type of alloy steel grade smelting temperature and effectively control aborning rotten and other core process quality point of deoxidation, " secondary treatment method " foundation is provided, guarantee realizes the fast melting on practical significance;
(5) casting mold is used to quick-drying alcohol-base paint, can obtain high-quality erosion resistant high temperature steel.
2. the processing method with induction furnace casting wear-resistant erosion high temperature steel according to claim 1, is characterized in that, the content of the steel scrap bits in described step (1) is 5%.
3. the processing method with induction furnace casting wear-resistant erosion high temperature steel according to claim 1, is characterized in that, the content of the steel scrap bits in described step (1) is 7.5%.
4. the processing method with induction furnace casting wear-resistant erosion high temperature steel according to claim 1, is characterized in that, the content of the steel scrap bits in described step (1) is 10%.
5. the processing method with induction furnace casting wear-resistant erosion high temperature steel according to claim 1, is characterized in that, in described step (2), comprehensive reductor is the comprehensive reductor of manganese sial calcium.
6. the processing method with induction furnace casting wear-resistant erosion high temperature steel according to claim 1, is characterized in that, in described step (4), temperature measurer is infrared thermometer.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106148807A (en) * | 2016-07-01 | 2016-11-23 | 宁国市开源电力耐磨材料有限公司 | A kind of smelting technology making high-chromium alloy wear resisting cast ball |
| CN104694704B (en) * | 2015-04-01 | 2016-11-23 | 山东瑞泰新材料科技有限公司 | The vacuum metling technique of nitrogen austenite heat resisting steel |
| CN110484807A (en) * | 2019-08-27 | 2019-11-22 | 共享铸钢有限公司 | The method of rare-earth element cerium is added in cast steel fusion process |
Citations (3)
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| US3767380A (en) * | 1970-05-29 | 1973-10-23 | Lenin Kohaszati Muvek | Process for the production of free-cutting carbon steels with special deoxidation |
| CN87104407A (en) * | 1987-06-27 | 1987-12-23 | 邯郸建华钢管厂 | Rare-earth low-chrome cast iron for making grinding ball and production technique |
| CN101280382A (en) * | 2007-04-02 | 2008-10-08 | 长春市东方菲斯特机械设备制造有限公司 | Globe mill austenitic-bainitic nodular cast iron grinding ball and manufacturing method thereof |
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2014
- 2014-07-28 CN CN201410366587.8A patent/CN104152782A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3767380A (en) * | 1970-05-29 | 1973-10-23 | Lenin Kohaszati Muvek | Process for the production of free-cutting carbon steels with special deoxidation |
| CN87104407A (en) * | 1987-06-27 | 1987-12-23 | 邯郸建华钢管厂 | Rare-earth low-chrome cast iron for making grinding ball and production technique |
| CN101280382A (en) * | 2007-04-02 | 2008-10-08 | 长春市东方菲斯特机械设备制造有限公司 | Globe mill austenitic-bainitic nodular cast iron grinding ball and manufacturing method thereof |
Non-Patent Citations (1)
| Title |
|---|
| 王仲珏: "一种用感应炉熔炼高品质铸造耐磨蚀耐热钢的工艺方法", 《铸造》, vol. 53, no. 11, 30 November 2004 (2004-11-30), pages 935 - 936 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104694704B (en) * | 2015-04-01 | 2016-11-23 | 山东瑞泰新材料科技有限公司 | The vacuum metling technique of nitrogen austenite heat resisting steel |
| CN106148807A (en) * | 2016-07-01 | 2016-11-23 | 宁国市开源电力耐磨材料有限公司 | A kind of smelting technology making high-chromium alloy wear resisting cast ball |
| CN110484807A (en) * | 2019-08-27 | 2019-11-22 | 共享铸钢有限公司 | The method of rare-earth element cerium is added in cast steel fusion process |
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