CN100451143C - Process of smelting copper alloy by steel ladle refining furance - Google Patents
Process of smelting copper alloy by steel ladle refining furance Download PDFInfo
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- CN100451143C CN100451143C CNB2006101665667A CN200610166566A CN100451143C CN 100451143 C CN100451143 C CN 100451143C CN B2006101665667 A CNB2006101665667 A CN B2006101665667A CN 200610166566 A CN200610166566 A CN 200610166566A CN 100451143 C CN100451143 C CN 100451143C
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- ladle refining
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- refining furnace
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Abstract
The process of smelting copper alloy in a refining ladle includes the following steps: bricking up ladle and filling the seam with magnesia-chromia filler, pre-heating the refining ladle, filling small amount of smelted copper alloy liquid, adding covering agent, introducing argon, heating under controlled voltage and current, adding the rest copper alloy blocks, smelting, maintaining temperature and casting. The present invention adopts small amount of copper alloy for easy arc starting, covering agent to reduce burning loss, argon to stirring copper alloy liquid for homogenizing components and temperature and raise casting quality, and smelting temperature within 1400 deg.c for reaching required copper alloy liquid components and internal quality. The present invention has burning loss of copper alloy below 15 %, short smelting period, high quality of copper alloy and low cost.
Description
Technical field
The present invention relates to a kind of method of utilizing the ladle refining furnace smelting copper alloy of steel-making usefulness.
Background technology
Domestic in the past smelting copper alloy uses crucible furnace, reverberatory furnace, electrosmelting copper alloy, and metal loss is generally about 10%～15%.When using the crucible furnace melting, first preheating body of heater adds after copper melts fast in batches, adds non-ferrous metal meltings such as zinc, tin, lead and heats up, and fully stirs and makes alloy liquid homogenizing; When using reverberatory smelting, open big air port adjusting throttle behind first preheating body of heater and the furnace charge and carry out melting with oxidisability flame; When using electrosmelting, behind the body of heater of energising preheating earlier, alloy materials such as the copper of in batches packing into energising carrying out melting.The electrosmelting time is longer, and the melting capacity is less.
Ladle refining furnace generally is used for STEELMAKING PRODUCTION, and during smelting copper alloy, because of electric current, voltage are bigger, it is too fast to heat up, and has quickened the scaling loss of copper alloy, and there is certain degree of difficulty in temperature control, has strengthened the scaling loss of copper alloy; During the refining furnace melting, the furnace bottom Argon, argon gas stirs the difficult control of pressure, and pressure is crossed ambassador's liquid level and is exposed the scaling loss that strengthens copper alloy in air, too smallly then stirs the ineffective disconnected argon that easily causes; The difficult control of temperature of copper alloy liquid when having a power failure insulation.
Summary of the invention
The objective of the invention is at above-mentioned present situation, the scaling loss that aims to provide an Albatra metal-is little, smelting time short, can guarantee the copper alloy quality, the method with the ladle refining furnace smelting copper alloy that production cost is low.
The implementation of the object of the invention is that with the method for ladle refining furnace smelting copper alloy, concrete steps are as follows:
When 1) ladle is built by laying bricks or stones, smear evenly with magnesium chromium stopping composition in the contact position of brick,
2) the ladle refining furnace baking is preheated to 800-950 ℃,
3) 20% the copper alloy piece that will need melting is in the copper alloy liquid that other smelting furnace is smelted into is packed ladle refining furnace into, and the ratio in 0.5%～1.5% adds insulating covering agent, and connect argon gas and stir,
4) be warming up to 1100 ℃～1400 ℃ with 200-220V, the energising of 10500-11500A electric current,
5) the copper alloy piece with remainder adds in batches, and every batch adds the 2-4 ton, and energising is melted under 900 ℃～1400 ℃ temperature,
6) copper alloy liquid is incubated down at 1150-1250 ℃, promptly pourable.
The present invention adopt a small amount of copper alloy liquid as drawing liquid so that be easy to starting the arc energising when sending electricity; Add insulating covering agent so that reduce scaling loss; Stir copper alloy liquid so that evenly composition, temperature with argon gas, thereby make the copper-alloy casting quality good; The temperature of control fusion process is no more than 1400 ℃, makes the chemical ingredients of copper alloy liquid and internal soundness all reach satisfied effect.
Adopt the present invention, the scaling loss of copper alloy is controlled at below 15%, smelting time shortens 1/3rd, has guaranteed the quality of copper alloy simultaneously, has saved production cost greatly.Copper-alloy casting process repeated detection with the present invention produces confirms that its internal soundness, metallurgical quality, chemical ingredients all reach the requirement of product.
Embodiment
The inventive method is, when ladle was built by laying bricks or stones, magnesium chromium stopping composition, ladle refining furnace preheating were smeared in the contact position of brick, with on a small quantity in the copper alloy liquid of melting is packed ladle refining furnace into, add insulating covering agent, connect argon gas, control voltage, electric current heat up, remaining copper alloy piece is added in batches, fusing, insulation, promptly pourable.
When the present invention builds by laying bricks or stones at ladle,, help preventing the seepage of copper alloy liquid with the contact position that magnesium chromium stopping composition is evenly smeared brick; The copper alloy raw material is with copper, zinc, tin non-ferrous metal or alloy, uses a spot of copper alloy liquid as drawing liquid during melting, starting the arc operation and as the follow-up mother liquor that adds the copper alloy piece in batches when helping switching on; Add insulating covering agent and cover the copper alloy liquid level, help reducing the scaling loss of copper alloy; With argon gas copper alloy liquid is stirred fully, help the homogenizing of copper alloy, reduce the segregation of copper alloy; Power supply system with big voltage, big electric current helps being rapidly heated of copper alloy liquid, shortens smelting time; The temperature of copper alloy liquid is controlled at 900 ℃～1400 ℃, the consumption that helps reducing the scaling loss of copper alloy and reduce the energy; Copper alloy liquid is poured into a mould preceding insulation, help controlling teeming temperature.When the copper alloy liquid temperature reaches teeming temperature, pour into foundry goods.Through foundry goods is detected, confirm to satisfy the mentioned every performance requriements of technical qualification of copper-alloy casting with the copper alloy liquid of melting of the present invention.
Insulating covering agent of the present invention sodium-chlor insulating covering agent commonly used.
Claims (2)
1, with the method for ladle refining furnace smelting copper alloy, it is characterized in that concrete steps are as follows:
When 1) ladle is built by laying bricks or stones, smear evenly with magnesium chromium stopping composition in the contact position of brick,
2) the ladle refining furnace baking is preheated to 800-950 ℃,
3) 20% the copper alloy piece that will need the melting amount is after other smelting furnace is smelted into copper alloy liquid, and in the ladle refining furnace of packing into, the ratio in 0.5%～1.5% adds insulating covering agent, and connect argon gas and stir,
4) be warming up to 1100 ℃～1400 ℃ with 200-220V, the energising of 10500-11500A electric current,
5) the copper alloy piece with remainder adds in batches, and every batch adds the 2-4 ton, and energising is melted under 900 ℃～1400 ℃ temperature,
6) copper alloy liquid is incubated down at 1150-1250 ℃, promptly pourable.
2, the method with the ladle refining furnace smelting copper alloy according to claim 1 is characterized in that the alloy of copper alloy raw material with copper, zinc and tin non-ferrous metal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101665667A CN100451143C (en) | 2006-12-30 | 2006-12-30 | Process of smelting copper alloy by steel ladle refining furance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101665667A CN100451143C (en) | 2006-12-30 | 2006-12-30 | Process of smelting copper alloy by steel ladle refining furance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN100999791A CN100999791A (en) | 2007-07-18 |
| CN100451143C true CN100451143C (en) | 2009-01-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNB2006101665667A Active CN100451143C (en) | 2006-12-30 | 2006-12-30 | Process of smelting copper alloy by steel ladle refining furance |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104662709A (en) * | 2013-01-08 | 2015-05-27 | 新神户电机株式会社 | Method for manufacturing electrode plate group for lead-acid battery |
| CN104087765A (en) * | 2014-06-30 | 2014-10-08 | 山东中佳新材料有限公司 | Non-vacuum melt casting device of pipe with high thermal conductivity and processing process thereof |
| CN104959538A (en) * | 2015-06-17 | 2015-10-07 | 陈文建 | Forging method of copper alloy |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6287364B1 (en) * | 1999-03-01 | 2001-09-11 | Osaka Alloying Works, Co., Ltd. | Method for producing copper alloy ingot |
| JP2002086251A (en) * | 2000-09-13 | 2002-03-26 | Hitachi Cable Ltd | Method for continuously casting alloy |
| CN1366088A (en) * | 2001-09-08 | 2002-08-28 | 李倬 | Process for preparing high-strength copper alloy |
| CN1222391C (en) * | 2001-04-04 | 2005-10-12 | 费友康 | Smelting method for phosphorus-copper solder |
-
2006
- 2006-12-30 CN CNB2006101665667A patent/CN100451143C/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6287364B1 (en) * | 1999-03-01 | 2001-09-11 | Osaka Alloying Works, Co., Ltd. | Method for producing copper alloy ingot |
| JP2002086251A (en) * | 2000-09-13 | 2002-03-26 | Hitachi Cable Ltd | Method for continuously casting alloy |
| CN1222391C (en) * | 2001-04-04 | 2005-10-12 | 费友康 | Smelting method for phosphorus-copper solder |
| CN1366088A (en) * | 2001-09-08 | 2002-08-28 | 李倬 | Process for preparing high-strength copper alloy |
Non-Patent Citations (2)
| Title |
|---|
| LFV钢包精炼炉生产操作实践. 徐徽，王雪峰.炼钢，第21卷第5期. 2005 |
| LFV钢包精炼炉生产操作实践. 徐徽，王雪峰.炼钢，第21卷第5期. 2005 * |
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| CN100999791A (en) | 2007-07-18 |
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