CN103071763A - Dry-sand negative pressure casting method of calcium carbide smelting caldron and calcium carbide smelting caldron - Google Patents
Dry-sand negative pressure casting method of calcium carbide smelting caldron and calcium carbide smelting caldron Download PDFInfo
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- CN103071763A CN103071763A CN2013100378684A CN201310037868A CN103071763A CN 103071763 A CN103071763 A CN 103071763A CN 2013100378684 A CN2013100378684 A CN 2013100378684A CN 201310037868 A CN201310037868 A CN 201310037868A CN 103071763 A CN103071763 A CN 103071763A
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- calcium carbide
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- caldron
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Abstract
The invention belongs to the field of industrial casting, and relates to a dry-sand negative pressure casting method of a calcium carbide smelting caldron and the calcium carbide smelting caldron, in particular to a dry-sand negative pressure casting technology of an calcium carbide smelting caldron and the calcium carbide smelting caldron adopting the technology for production. The technology comprises the steps of equipment and technological equipment preparation, molding sand preparation, negative pressure molding, pouring ladle preparation, pouring and a high-temperature resistant and insulating treatment process of the calcium carbide smelting caldron. The dry-sand negative pressure casting of the calcium carbide smelting caldron is achieved; the technology is direct and simple; the traditional green-sand molding is not used; the environmental pollution is reduced; the labor intensity of workers is reduced; and the economic benefits of an enterprise are improved effectively.
Description
Affiliated technical field
Calcium carbide of the present invention smelts pot dried sand negative-pressure casting method and calcium carbide smelting pot belongs to industrial casting field, and particularly a kind of calcium carbide is smelted pot dried sand negative-pressure casting technique and used the method production calcium carbide to smelt pot.
Background technology
At present, calcium carbide is smelted pot industry casting and is adopted traditional die model hollow greensand casting process and real core foamed plastics formative method, die model hollow greensand casting process comprises that grinding sand joins sand, greensand mo(u)lding, wooden model somatotype core assembly, flask oven dry ...., technique is complicated, labour intensity is large, and pattern draft, burr technical conditions are required height, and the timber use amount is large, cost is high, and environmental pollution is serious; Real core foamed plastics formative method adopts the molding of artificial cutting cystosepiment, although simplified the moulding operation, add furane resins, curing agent, quick hardening cement, the multiple moulding auxiliary material of waterglass in molding sand, and the complex procedures environmental pollution is large.
Summary of the invention
Purpose of the present invention just is to overcome the defective of above-mentioned prior art, provides a kind of calcium carbide to smelt pot dried sand negative-pressure casting technique and makes calcium carbide smelting pot.
Cast steel calcium carbide pot dried sand negative-pressure casting technique for achieving the above object.The technical scheme of taking is:
Comprise the preparation of equipment and process equipment, molding sand preparation and vacuum moulding, casting ladle preparation and cast and calcium carbide and smelt a pot high-temperature insulation treatment process;
The equipment and process equipment prepares to comprise water-ring vacuum pump, vacuum meter, filter tank, filter distributor, suction branch, model, film far-infrared heater, sandbox preparation, bumper, the plank sheathing with exhaust chamber and aspirating hole, coating and plastic sheeting; Film far-infrared heater, shake table, water-ring vacuum pump, vacuum meter, filter tank, filter dispenser device are intact, interconnect unobstructed, working properly; Suction branch leaks gas without breakage; Plank sheathing with exhaust chamber and aspirating hole uses pine or use to make than soft wood, and the die model surface roughness reaches 3.2, and vertical plane will leave pattern draft; Fixedly be shaped with dividing plate in the middle of sandbox is wanted, the dividing plate lower floor suction branch of arranging, during use so that sandbox formation vacuum; Model is made wooden model or cement mould by the workpiece requirement; Coating uses has stronger cohesive force, sapecial coating that fire resistance is high to plastic sheeting; Plastic film thickness is 0.03-1.2mm;
Molding sand is prepared and vacuum moulding, and molding sand uses silica sand and limestone sand, and molding sand must be dry, and water content is no more than 0.3%; Granularity is at the 60-200 order, and clay content is below 3%; Vacuum moulding carries out as follows: a is fixed on calcium carbide with model and smelts on the pot pattern board, pattern board is hollow structure, in-built suction branch connects water-ring vacuum pump, b uses film far-infrared heater thermoplastic plastic sheeting, rapid Cover is smelted on the pot model at pattern board and calcium carbide, the c water-ring vacuum pump is bled, plastic sheeting is close on pattern board and the calcium carbide smelting pot model, vacuum meter shows that vacuum reaches 25-60Kpa, d on plastic sheeting swabbing 2-3 time, brushing thickness is 0.3-1.2mm, 5 place pattern board and calcium carbide to smelt on the pot model the special interlayer sandbox with suction branch, e fills dry molding sand in sandbox, and shake at bumper, f strikes off plane covered with plastic film on the casting mold, extrude cup, make top swage, g will vacuumize with the interlayer sandbox of suction branch, vacuum reaches 25-56 Kpa, assurance is with the poor 30-56 Kpa of interlayer sandbox external and internal pressure of suction branch, molding sand consolidation hardness reaches 80-100 Gong Jin/㎡, h remove model base plate vacuum, molding, j uses same method to produce anvil swage, the number of pressing mould assembling, upper anvil swage vacuumizes, and vacuum reaches 40-60 Kpa, can stop until foundry goods solidifies fully;
Casting ladle is prepared and cast, waters and is surrounded by tilting, spout of a teapot formula, bottom filling, will package with refractory material before casting ladle uses and fix, and brushing paint, dries heat, bakes to wrap temperature and reach more than 600-700 ℃, and steel ladle, ladle can not be used with; The cast operation contains: a pours molten steel into casting ladle, removes scum silica frost, measures liquid steel temperature, pouring temperature guarantees at 1580-1600 ℃, the b molten steel surface spreads poly-slag agent, and with pushing off the slag Wooden Batten slag, c accelerates poring rate after aiming at and watering beam during cast, liquid steel level rises to the dead head root and slows down cast, until molten steel is full of rising head, after d was poured 30 minutes, removes anvil swage and vacuumize negative pressure, top box is proposed, and foundry goods keeps taking-up in 4-6 hour in nowel;
The present invention has realized the casting of calcium carbide smelting pot dried sand negative-pressure, and process is directly simple, does not use the conventional wet sand molding, alleviates environmental pollution, alleviates labor strength, the Effective Raise Business Economic Benefit.
The specific embodiment
Comprise the preparation of equipment and process equipment, molding sand preparation and vacuum moulding, casting ladle preparation and cast and calcium carbide and smelt a pot high-temperature insulation treatment process.
The equipment and process equipment prepares to comprise water-ring vacuum pump, vacuum meter, filter tank, filter distributor, suction branch, model, film far-infrared heater, sandbox preparation, bumper, the plank sheathing with exhaust chamber and aspirating hole, coating and plastic sheeting; Film far-infrared heater, shake table, water-ring vacuum pump, vacuum meter, filter tank, filter dispenser device are intact, interconnect unobstructed, working properly; Suction branch leaks gas without breakage; Plank sheathing with exhaust chamber and aspirating hole uses pine or use to make than soft wood, and the die model surface roughness reaches 3.2, and vertical plane will leave pattern draft; Fixedly be shaped with dividing plate in the middle of sandbox is wanted, the dividing plate lower floor suction branch of arranging, suction branch connects water-ring vacuum pump, vacuum meter, filter tank, filter distributor, during use so that sandbox formation vacuum; Model is made wooden model or cement mould by the workpiece requirement; Coating uses has stronger cohesive force, sapecial coating that fire resistance is high to plastic sheeting; Plastic film thickness is 1.00mm.
Molding sand is prepared and vacuum moulding, and molding sand uses silica sand and limestone sand, and molding sand must be dry, and water content is no more than 0.3%; Granularity is at 120 orders, and clay content is below 3%; Vacuum moulding carries out as follows: a smelts the pot model with calcium carbide and is fixed on the pattern board, pattern board is hollow structure, in-built suction branch connects water-ring vacuum pump, b uses film far-infrared heater thermoplastic plastic sheeting, rapid Cover is smelted on pot pattern board and the model at calcium carbide, the c water-ring vacuum pump is bled, plastic sheeting is close on pattern board and the model, vacuum meter shows that vacuum reaches 50Kpa, d on plastic sheeting swabbing 2-3 time, brushing thickness is 1.2mm, 5 place the special interlayer sandbox with suction branch on pattern board and the model, e fills dry molding sand in sandbox, and shake at bumper, f strikes off plane covered with plastic film on the casting mold, extrude cup, make top swage, g will vacuumize with the interlayer sandbox of suction branch, and vacuum reaches 50 Kpa, guarantees to differ from 50 Kpa with the interlayer sandbox external and internal pressure of suction branch, molding sand consolidation hardness reaches 100 Gong Jin/㎡, h remove model base plate vacuum, molding, j uses same method to produce anvil swage, the number of pressing mould assembling, upper anvil swage vacuumizes, and vacuum reaches 50 Kpa, until foundry goods solidifies can stop fully.
Casting ladle is prepared and cast, and casting ladle adopts the tilting casting ladle, will package with refractory material before using and fix, and brushing paint, dries heat, bakes to wrap temperature and reach more than 600 ℃; The cast operation contains: a pours molten steel into casting ladle, removes scum silica frost, measures liquid steel temperature, pouring temperature guarantees at 1580 ℃, the b molten steel surface spreads poly-slag agent, and with pushing off the slag Wooden Batten slag, c accelerates poring rate after aiming at and watering beam during cast, liquid steel level rises to the dead head root and slows down cast, until molten steel is full of rising head, after d was poured 30 minutes, removes anvil swage and vacuumize negative pressure, top box is proposed, and foundry goods keeps taking-up in 4-6 hour in nowel.
Claims (4)
1. calcium carbide smelting pot dried sand negative-pressure casting method and calcium carbide are smelted pot, it is characterized in that: comprise the preparation of equipment and process equipment, molding sand preparation and vacuum moulding, casting ladle preparation and cast operation.
2. according to cast steel calcium carbide pot dried sand negative-pressure casting technique claimed in claim 1, it is characterized in that: the equipment and process equipment prepares to comprise water-ring vacuum pump, vacuum meter, filter tank, filter distributor, suction branch, model, film far-infrared heater, sandbox preparation, bumper, the plank sheathing with exhaust chamber and aspirating hole, coating and plastic sheeting; Film far-infrared heater, shake table, water-ring vacuum pump, vacuum meter, filter tank, filter dispenser device are intact, interconnect unobstructed, working properly; Suction branch leaks gas without breakage; Plank sheathing with exhaust chamber and aspirating hole uses pine or use to make than soft wood, and the die model surface roughness reaches 3.2, and vertical plane will leave pattern draft; Fixedly be shaped with dividing plate in the middle of sandbox is wanted, the dividing plate lower floor suction branch of arranging, during use so that sandbox formation vacuum; Model is made wooden model or cement mould by the workpiece requirement; Coating uses has stronger cohesive force, sapecial coating that fire resistance is high to plastic sheeting; Plastic film thickness is 0.03-1.2mm.
3. according to cast steel calcium carbide pot dried sand negative-pressure casting technique claimed in claim 1, it is characterized in that: molding sand is prepared and vacuum moulding, and molding sand uses silica sand and limestone sand, and molding sand must be dry, and water content is no more than 0.3%; Granularity is at the 60-200 order, and clay content is below 3%; Vacuum moulding carries out as follows: a is fixed on model on the pattern board, pattern board is hollow structure, in-built suction branch connects water-ring vacuum pump, b uses film far-infrared heater thermoplastic plastic sheeting, rapid Cover is on pattern board and model, the c water-ring vacuum pump is bled, plastic sheeting is close on pattern board and the model, vacuum meter shows that vacuum reaches 25-60Kpa, d on plastic sheeting swabbing 2-3 time, brushing thickness is 0.3-1.2mm, 5 place the special interlayer sandbox with suction branch on pattern board and the model, e fills dry molding sand in sandbox, and shake at bumper, f strikes off plane covered with plastic film on the casting mold, extrude cup, make top swage, g will vacuumize with the interlayer sandbox of suction branch, and vacuum reaches 25-56 Kpa, guarantees the poor 30-56 Kpa of interlayer sandbox external and internal pressure with suction branch, molding sand consolidation hardness reaches 80-100 Gong Jin/㎡, h remove model base plate vacuum, molding, j uses same method to produce anvil swage, the number of pressing mould assembling, upper anvil swage vacuumizes, and vacuum reaches 40-60 Kpa, can stop until foundry goods solidifies fully.
4. according to claim 1 cast steel calcium carbide pot dried sand negative-pressure casting technique, it is characterized in that: casting ladle is prepared and cast, water and be surrounded by tilting, spout of a teapot formula, bottom filling, to package with refractory material before casting ladle uses and fix, brushing paint, dry heat, roasting bag temperature reaches more than 600-700 ℃, and steel ladle, ladle can not be used with; The cast operation contains: a pours molten steel into casting ladle, removes scum silica frost, measures liquid steel temperature, pouring temperature guarantees at 1580-1600 ℃, the b molten steel surface spreads poly-slag agent, and with pushing off the slag Wooden Batten slag, c accelerates poring rate after aiming at and watering beam during cast, liquid steel level rises to the dead head root and slows down cast, until molten steel is full of rising head, after d was poured 30 minutes, removes anvil swage and vacuumize negative pressure, top box is proposed, and foundry goods keeps taking-up in 4-6 hour in nowel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310037868.4A CN103071763B (en) | 2013-01-31 | 2013-01-31 | Calcium carbide smelts pot dried sand negative-pressure casting method and calcium carbide smelts pot |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201310037868.4A CN103071763B (en) | 2013-01-31 | 2013-01-31 | Calcium carbide smelts pot dried sand negative-pressure casting method and calcium carbide smelts pot |
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| CN103071763A true CN103071763A (en) | 2013-05-01 |
| CN103071763B CN103071763B (en) | 2016-03-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103586439A (en) * | 2013-11-21 | 2014-02-19 | 四川省祥业机械铸造有限公司 | V-method casting technology for ductile iron manhole cover/ base |
| CN107398530A (en) * | 2017-07-25 | 2017-11-28 | 苏州市鑫渭阀门有限公司 | The V method casting techniques of the high valve body of precision |
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| US4043376A (en) * | 1976-06-16 | 1977-08-23 | Nippon Gakki Seizo Kabushiki Kaisha | Casting process by vacuum molding |
| CN1187397A (en) * | 1997-01-10 | 1998-07-15 | 北京科技大学 | Roller vacuum sealing moulding technique |
| CN1375367A (en) * | 2001-10-08 | 2002-10-23 | 江苏常熟东方模具厂 | Vacuum sealed chill casting process of making glass mold of dot type graphite cast iron |
| CN1593812A (en) * | 2004-06-30 | 2005-03-16 | 黄刚 | Method for manufacturing crankcase of automobile engine by negative pressure cavityless casting |
| CN1701874A (en) * | 2005-06-07 | 2005-11-30 | 如皋市超达模具配套有限公司 | Vacuum negative pressure casting process of foam die casting piece |
| CN1759953A (en) * | 2005-10-27 | 2006-04-19 | 贾林夫 | Molding method for manufacturing ingot mold through vacuseal molding machine |
| JP2007160323A (en) * | 2005-12-12 | 2007-06-28 | Sintokogio Ltd | Vacuum molding |
| CN101823122A (en) * | 2010-03-24 | 2010-09-08 | 河南省前卫实业有限公司 | Negative-pressure molding process of casting refractory material product |
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2013
- 2013-01-31 CN CN201310037868.4A patent/CN103071763B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4043376A (en) * | 1976-06-16 | 1977-08-23 | Nippon Gakki Seizo Kabushiki Kaisha | Casting process by vacuum molding |
| CN1187397A (en) * | 1997-01-10 | 1998-07-15 | 北京科技大学 | Roller vacuum sealing moulding technique |
| CN1375367A (en) * | 2001-10-08 | 2002-10-23 | 江苏常熟东方模具厂 | Vacuum sealed chill casting process of making glass mold of dot type graphite cast iron |
| CN1593812A (en) * | 2004-06-30 | 2005-03-16 | 黄刚 | Method for manufacturing crankcase of automobile engine by negative pressure cavityless casting |
| CN1701874A (en) * | 2005-06-07 | 2005-11-30 | 如皋市超达模具配套有限公司 | Vacuum negative pressure casting process of foam die casting piece |
| CN1759953A (en) * | 2005-10-27 | 2006-04-19 | 贾林夫 | Molding method for manufacturing ingot mold through vacuseal molding machine |
| JP2007160323A (en) * | 2005-12-12 | 2007-06-28 | Sintokogio Ltd | Vacuum molding |
| CN101823122A (en) * | 2010-03-24 | 2010-09-08 | 河南省前卫实业有限公司 | Negative-pressure molding process of casting refractory material product |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103586439A (en) * | 2013-11-21 | 2014-02-19 | 四川省祥业机械铸造有限公司 | V-method casting technology for ductile iron manhole cover/ base |
| CN107398530A (en) * | 2017-07-25 | 2017-11-28 | 苏州市鑫渭阀门有限公司 | The V method casting techniques of the high valve body of precision |
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| Publication number | Publication date |
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| CN103071763B (en) | 2016-03-16 |
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Granted publication date: 20160316 Termination date: 20190131 |