CN103223474A - Casting strengthened drossing method of iron casting machine - Google Patents
Casting strengthened drossing method of iron casting machine Download PDFInfo
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- CN103223474A CN103223474A CN2013101976524A CN201310197652A CN103223474A CN 103223474 A CN103223474 A CN 103223474A CN 2013101976524 A CN2013101976524 A CN 2013101976524A CN 201310197652 A CN201310197652 A CN 201310197652A CN 103223474 A CN103223474 A CN 103223474A
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- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention relates to a metallurgical iron-casting process improvement technology and in particular relates to a casting strengthened drossing method of an iron casting machine. The casting strengthened drossing method is characterized in that blast-furnace molten iron enters a special double-layer drossing machine for carrying out strengthened drossing and then flows to an iron casting mould after being placed to a molten iron bin; the double-layer drossing machine is formed by connecting two molten iron storage slots in series, wherein the width and the depth of the first molten iron storage slot are bigger than those of the second molten iron storage slot; the bottom of the first molten iron storage slot is higher than the bottom of the second molten iron storage slot; the two molten iron storage slots share a blocking wall, wherein a molten iron discharging port is formed on the shared blocking wall; a sprue is formed on the front side wall of the second molten iron storage slot; the port diameter of the discharging port is equal to that of the sprue; and when the molten iron flows through the two molten iron storage slots, artificial drossing is carried out onto the two molten iron storage slots, so that drossing of molten iron is completed. The casting strengthened drossing method of the iron casting machine can be used for solving the problems that the existing iron casting block has large slag content, the surface quality and inherent quality of the iron block are severely affected, and therefore, the casting strengthened drossing method is applicable to iron casting process improvement of the iron casting machine.
Description
Technical field
The present invention relates to metallurgical casting iron craft improvement technology, the skimming process is strengthened in especially a kind of pig machine casting.
Background technology
Blast furnace and pig machine are on a lines in existing pig machine industry, and blast furnace is put the molten iron direct cast iron, always contain the slag thing when blast furnace is put molten iron and are mixed with molten iron and put into ladle and send pig machine cast iron.The problem that exists is: a) impurity, slag thing together flow into pig mold with molten iron in the molten iron, simultaneously cast iron process operation personnel dredge ditch material, the ditch mud that the cast iron ditch takes up and also together flow into pig mold with molten iron, can't distinguish and make casting pig shaping rear surface slag inclusion, have a strong impact on the casting pig presentation quality; B) casting pig surface dregginess is big, as semi-finished product associated user reprocessing, needs through row secondary fusion process, and iron block surface slag inclusion is not accepted by the client.
Summary of the invention
Purpose of the present invention will solve in the existing pig machine Cast Iron Production process exactly, no skimming technology, and casting pig product surface slag inclusion has a strong impact on the problem of iron block surface quality and inherent quality, and a kind of pig machine casting reinforcement skimming process is provided.
Concrete scheme of the present invention is: the skimming process is strengthened in the casting of a kind of pig machine, it is characterized in that: blast-melted put into the molten iron storehouse after, enter and flow into pig mold again after a special double-deck skimming tool is strengthened skimming; Described double-deck skimming tool is to be in series by two molten iron storage tanks, wherein the width of the first molten iron storage tank and the degree of depth are all greater than the second molten iron storage tank, and the bottom of the first molten iron storage tank is higher than the bottom of the second molten iron storage tank, the shared barrier wall of two molten iron storage tanks, promptly the preceding side wall of the first molten iron storage tank is the back side wall of the second molten iron storage tank, have the molten iron floss hole on shared barrier wall, have cast gate on the preceding side wall of the second molten iron storage tank, described floss hole equates with the cast gate bore; When molten iron is flowed through two molten iron storage tanks, keep the molten iron liquid level to be higher than molten iron floss hole and cast gate all the time, molten iron produces eddy flow, and foreign material are floated on the molten iron liquid level, simultaneously two molten iron storage tanks is manually skimmed, and finishes the molten iron skimming and purifies.
The clean dark h of the second molten iron storage tank in the double-deck skimming tool described in the present invention 〉=600 millimeters.
The floss hole of molten iron described in the present invention position is higher than gate location, and lays respectively at the Lower Half of body of wall separately.
The bore of floss hole of molten iron described in the present invention and cast gate is 90mm.
One side of two molten iron storage tanks described in the present invention is equipped with impurity separately deposits platform, and it is concordant with the sidewall end face of molten iron storage tank that impurity is deposited the table top of platform.
Process of the present invention is simple, and is easy to operate, invests little (entering before the pig mold as long as double-deck skimming tool of the refractory material system of employing is contained in molten iron).The casting pig surface quality that adopts the inventive method to produce improves greatly, and surperficial slag inclusion reduces to 2%-3% by original 20%-30%, and the inherent quality of corresponding product also is greatly improved.
Description of drawings
Fig. 1 is the front view of double-deck skimming tool among the present invention;
Fig. 2 is the vertical view of double-deck skimming tool among the present invention;
Among the figure: 1-the first molten iron storage tank, 2-shared barrier wall, 3-molten iron floss hole, 4-the second molten iron storage tank, the preceding side wall of 5-the second molten iron storage tank, 6-cast gate, 7-impurity is deposited platform.
The specific embodiment
The process that adopts the present invention to carry out the cast iron skimming is: the skimming process is strengthened in a kind of pig machine casting, particularly: blast-melted put into the molten iron storehouse after, enter and flow into pig mold again after a special double-deck skimming tool is strengthened skimming; Described double-deck skimming tool is referring to Fig. 1,2, it is to be in series by two molten iron storage tanks 1 and 4, wherein the width of the first molten iron storage tank 1 and the degree of depth are all greater than the second molten iron storage tank 4, and the bottom of the first molten iron storage tank 1 is higher than the bottom (approximately 50mm gets final product) of the second molten iron storage tank 4, two molten iron storage tanks 1 and 4 shared barrier walls 2, promptly the preceding side wall of the first molten iron storage tank 1 is the back side wall of the second molten iron storage tank 4, on shared barrier wall 2, have molten iron floss hole 3, have cast gate 6 on the preceding side wall of the second molten iron storage tank 4, described floss hole 3 equates to be 90mm with cast gate 6 bores; Molten iron flow through two molten iron storage tanks 1 and 4 o'clock keep the molten iron liquid level to be higher than molten iron floss hole 3 and cast gate 6 all the time, and molten iron produces eddy flow, and foreign material are floated on the molten iron liquid level, simultaneously two molten iron storage tanks is manually skimmed, and finishes the molten iron skimming and purifies.
The clean dark h of the second molten iron storage tank 4 in the double-deck skimming tool described in the present invention 〉=600 millimeters is specially 600 millimeters.
The floss hole of molten iron described in the present invention 3 positions are higher than cast gate 6 positions, and lay respectively at the Lower Half of body of wall separately.
Two molten iron storage tanks 1 described in the present invention and a side of 4 are equipped with impurity separately deposits platform 7, and it is concordant with the sidewall end face of molten iron storage tank that impurity is deposited the table top of platform 7.
Claims (5)
1. the skimming process is strengthened in pig machine casting, it is characterized in that: blast-melted put into the molten iron storehouse after, enter and flow into pig mold again after a special double-deck skimming tool is strengthened skimming; Described double-deck skimming tool is to be in series by two molten iron storage tanks, wherein the width of the first molten iron storage tank and the degree of depth are all greater than the second molten iron storage tank, and the bottom of the first molten iron storage tank is higher than the bottom of the second molten iron storage tank, the shared barrier wall of two molten iron storage tanks, promptly the preceding side wall of the first molten iron storage tank is the back side wall of the second molten iron storage tank, have the molten iron floss hole on shared barrier wall, have cast gate on the preceding side wall of the second molten iron storage tank, described floss hole equates with the cast gate bore; When molten iron is flowed through two molten iron storage tanks, keep the molten iron liquid level to be higher than molten iron floss hole and cast gate all the time, molten iron produces eddy flow, and foreign material are floated on the molten iron liquid level, simultaneously two molten iron storage tanks is manually skimmed, and finishes the molten iron skimming and purifies.
2. the skimming process is strengthened in a kind of pig machine casting according to claim 1, it is characterized in that: the clean dark h of the second molten iron storage tank in the described double-deck skimming tool 〉=600 millimeters.
3. the skimming process is strengthened in a kind of pig machine casting according to claim 1, and it is characterized in that: described molten iron floss hole position is higher than gate location, and lays respectively at the Lower Half of body of wall separately.
4. strengthen the skimming process according to claim 1 or 3 described a kind of pig machine casting, it is characterized in that: the bore of described molten iron floss hole and cast gate is 90mm.
5. the skimming process is strengthened in a kind of pig machine casting according to claim 1, and it is characterized in that: a side of described two molten iron storage tanks is equipped with impurity separately deposits platform, and it is concordant with the sidewall end face of corresponding molten iron storage tank that impurity is deposited the table top of platform.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101976524A CN103223474A (en) | 2013-05-24 | 2013-05-24 | Casting strengthened drossing method of iron casting machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101976524A CN103223474A (en) | 2013-05-24 | 2013-05-24 | Casting strengthened drossing method of iron casting machine |
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| CN103223474A true CN103223474A (en) | 2013-07-31 |
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| CN2013101976524A Pending CN103223474A (en) | 2013-05-24 | 2013-05-24 | Casting strengthened drossing method of iron casting machine |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5658909A (en) * | 1979-10-22 | 1981-05-22 | Kawasaki Steel Corp | Separating method of molten iron and molten slag remaining in tapping spout |
| US5332416A (en) * | 1992-04-23 | 1994-07-26 | Allegheny Ludlum Corporation | Method for separating slag and nonmetallic particles during molten metal teeming operations using meltable dam |
| DE19902441A1 (en) * | 1999-01-22 | 2000-07-27 | Sms Demag Ag | Pig casting machine, especially for casting iron pigs, has a melt distributor with a melt reception portion connected to a pouring portion by a bottom opening in a partition wall |
| CN1410196A (en) * | 2002-11-29 | 2003-04-16 | 南京钢铁集团有限公司 | Blast furnace molten iron and slag iron separation device |
| JP2008138230A (en) * | 2006-11-30 | 2008-06-19 | Jfe Steel Kk | Method for separating molten pig iron slag in tapping trough for blast furnace |
| CN102717060A (en) * | 2012-07-13 | 2012-10-10 | 黄石新兴管业有限公司 | Pig-casting machine skimming casting process method |
-
2013
- 2013-05-24 CN CN2013101976524A patent/CN103223474A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5658909A (en) * | 1979-10-22 | 1981-05-22 | Kawasaki Steel Corp | Separating method of molten iron and molten slag remaining in tapping spout |
| US5332416A (en) * | 1992-04-23 | 1994-07-26 | Allegheny Ludlum Corporation | Method for separating slag and nonmetallic particles during molten metal teeming operations using meltable dam |
| DE19902441A1 (en) * | 1999-01-22 | 2000-07-27 | Sms Demag Ag | Pig casting machine, especially for casting iron pigs, has a melt distributor with a melt reception portion connected to a pouring portion by a bottom opening in a partition wall |
| CN1410196A (en) * | 2002-11-29 | 2003-04-16 | 南京钢铁集团有限公司 | Blast furnace molten iron and slag iron separation device |
| JP2008138230A (en) * | 2006-11-30 | 2008-06-19 | Jfe Steel Kk | Method for separating molten pig iron slag in tapping trough for blast furnace |
| CN102717060A (en) * | 2012-07-13 | 2012-10-10 | 黄石新兴管业有限公司 | Pig-casting machine skimming casting process method |
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Application publication date: 20130731 |