CN103056311B - Process for shaping furnace outlet nozzle of calcium carbide smelting furnace by using V method - Google Patents
Process for shaping furnace outlet nozzle of calcium carbide smelting furnace by using V method Download PDFInfo
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- CN103056311B CN103056311B CN201310037974.2A CN201310037974A CN103056311B CN 103056311 B CN103056311 B CN 103056311B CN 201310037974 A CN201310037974 A CN 201310037974A CN 103056311 B CN103056311 B CN 103056311B
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- converter nose
- sandbox
- calcium carbide
- template
- goes out
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Abstract
The invention provides a process for shaping a furnace outlet nozzle of a calcium carbide smelting furnace by using a V method, and belongs to a dry sand negative-pressure casting process. The furnace outlet nozzle which is shaped and cast by using the V method has the advantages of being smooth in surface, free from air vents, sand inclusion and shrinkage porosity, high in precise size and high in density. Through service tests of various calcium carbide plants, the service life of the normal furnace nozzle is 2-3 months, and the service life of the furnace outlet nozzle manufactured by using the process provided by the invention can reach 4-6 months. Therefore, the process provided by the invention can be used for manufacturing the furnace outlet nozzle which is long in service life, free from the air vents, the sand inclusion and the shrinkage porosity, high in precise size and high in density.
Description
technical field:
The present invention relates to industrial casting field, particularly a kind of V method moulding calcium carbide smelting furnace goes out converter nose technique.
background technology:
Traditional die model hollow greensand casting process and real core foamed plastics formative method, technique is complicated, and labour intensity is large, and the converter nose that goes out cast out exists the casting flaws such as pore, burning into sand, shrinkage porosite, thus make to cast out to go out converter nose shorter for service life.
summary of the invention:
In view of this, be necessary to provide a kind of V method moulding calcium carbide smelting furnace to go out converter nose technique, by this technique can produce service life higher go out converter nose.
A kind of V method moulding calcium carbide smelting furnace goes out converter nose technique and comprises the following steps:
Manufacture the template with exhaust chamber and aspirating hole, aspirating hole communicates with exhaust chamber;
To go out converter nose die model plate is fixed on template plate, goes out on converter nose die model plate and has aspirating hole, goes out aspirating hole on converter nose die model plate relative with the aspirating hole of template and communicate;
Use infrared heater by plastic sheeting thermoplastic, heating-up temperature is 60 degrees Celsius to 80 degrees Celsius, and rapid Cover is going out in converter nose die model plate, template;
Adopt vacuum air pump to vacuumize from the aspirating hole of template, make plastic sheeting be close to out on converter nose die model plate;
Be coated with on a plastic film and brush high-temperature resistant coating;
After coating dries, the interlayer sandbox with filtering suction pipe is placed on be coated with plastic sheeting go out in converter nose die model plate and template;
In sandbox, fill dry sand, dry sand comprises silica sand, and the water content of dry sand is no more than 0.3%, and makes the sandbox microseism being filled with dry sand, and the method for microseism is the method adopting bumper to control sandbox microseism;
Molding sand strikes off plane on casting mold after filling up sandbox, plastic sheeting in covering, and extruding extrudes cup;
Be connected with the filtration extraction tube of sandbox by vavuum pump, and extracted out by the air in sandbox, vacuum pressure is 5MPa to 6MPa, and molding sand is consolidation gradually;
Remove template vacuum, lift, is connected cooling water pipe with the die cavity of foundry goods;
Logical upper carbon dioxide in cooling water pipe;
Make to use the same method and produce mo(u)ld bottom half, the number of pressing mould assembling, vacuumizes cast, and foundry goods solidifies rear stopping vacuum completely;
After removing vacuum, sand mold is automatically defeated and dispersed;
Foundry goods is taken out cleaning polishing;
Carry out annealing in process, separate de-stress.
The thickness that above-mentioned V method moulding calcium carbide smelting furnace goes out the high-temperature resistant coating brushed on a plastic film in converter nose technical process is 1mm to 2mm.
The granularity that above-mentioned V method moulding calcium carbide smelting furnace goes out dry sand used in converter nose technical process is 100 order to 200 orders.
The nozzle surface of coming out of the stove gone out by above-mentioned V method Molding Casting is smooth, pore-free, burning into sand, shrinkage porosite, dimensional accuracy, density ratio are higher, through too much household electrical appliances stone factory service test, usual converter nose service life is 2 to 3 months, what utilize the present invention to produce goes out converter nose and can reach 4 to 6 months service life, employing the present invention like this can produce service life long and pore-free, burning into sand, shrinkage porosite, and what dimensional accuracy, density ratio were higher goes out converter nose.
detailed description of the invention:
V method moulding calcium carbide smelting furnace goes out converter nose technique and comprises the following steps:
Manufacture the template with exhaust chamber and aspirating hole, aspirating hole communicates with exhaust chamber;
To go out converter nose die model plate is fixed on template plate, goes out on converter nose die model plate and has aspirating hole, goes out aspirating hole on converter nose die model plate relative with the aspirating hole of template and communicate;
Use infrared heater by plastic sheeting thermoplastic, heating-up temperature is 60 degrees Celsius to 80 degrees Celsius, and rapid Cover is going out in converter nose die model plate, template;
Adopt vacuum air pump to vacuumize from the aspirating hole of template, make plastic sheeting be close to out on converter nose die model plate;
Be coated with on a plastic film and brush high-temperature resistant coating, the thickness of brushing paint is 1mm to 2mm;
After coating dries, the interlayer sandbox with filtering suction pipe is placed on be coated with plastic sheeting go out in converter nose die model plate and template;
In sandbox, fill dry sand, dry sand comprises silica sand, and the water content of dry sand is no more than 0.3%, and dry sand granularity is 100 order to 200 orders, and makes the sandbox microseism being filled with dry sand, and the method for microseism is the method adopting bumper to control sandbox microseism;
Molding sand strikes off plane on casting mold after filling up sandbox, plastic sheeting in covering, and extruding extrudes cup;
Be connected with the filtration extraction tube of sandbox by vavuum pump, and extracted out by the air in sandbox, vacuum pressure is 5MPa to 6MPa, and molding sand is consolidation gradually;
Remove template vacuum, lift, is connected cooling water pipe with the die cavity of foundry goods;
Logical upper carbon dioxide in cooling water pipe;
Make to use the same method and produce mo(u)ld bottom half, the number of pressing mould assembling, vacuumizes cast, and foundry goods solidifies rear stopping vacuum completely;
After removing vacuum, sand mold is automatically defeated and dispersed;
Foundry goods is taken out cleaning polishing;
Carry out annealing in process, separate de-stress.
In above-mentioned technical process, the dry sand of filling in sandbox is more thin better.In order to meet the requirement of environment, V method moulding line is also furnished with good ventilating dust-arrester.
The nozzle surface of coming out of the stove gone out by above-mentioned V method Molding Casting is smooth, pore-free, burning into sand, shrinkage porosite, dimensional accuracy, density ratio are higher, through too much household electrical appliances stone factory service test, usual converter nose service life is 2 to 3 months, what utilize the present invention to produce goes out converter nose and can reach 4 to 6 months service life, employing the present invention like this can produce service life long and pore-free, burning into sand, shrinkage porosite, and what dimensional accuracy, density ratio were higher goes out converter nose.
Claims (3)
1. V method moulding calcium carbide smelting furnace goes out a converter nose technique, it is characterized in that: V method moulding calcium carbide smelting furnace goes out converter nose technique and comprises the following steps:
Manufacture the template with exhaust chamber and aspirating hole, aspirating hole communicates with exhaust chamber;
To go out converter nose die model plate is fixed on template plate, goes out on converter nose die model plate and has aspirating hole, goes out aspirating hole on converter nose die model plate relative with the aspirating hole of template and communicate;
Use infrared heater by plastic sheeting thermoplastic, heating-up temperature is 60 degrees Celsius to 80 degrees Celsius, and rapid Cover is going out in converter nose die model plate, template;
Adopt vacuum air pump to vacuumize from the aspirating hole of template, make plastic sheeting be close to out on converter nose die model plate;
Be coated with on a plastic film and brush high-temperature resistant coating;
After coating dries, the interlayer sandbox with filtering suction pipe is placed on be coated with plastic sheeting go out in converter nose die model plate and template;
In sandbox, fill dry sand, dry sand comprises silica sand, and the water content of dry sand is no more than 0.3%, and makes the sandbox microseism being filled with dry sand, and the method for microseism is the method adopting bumper to control sandbox microseism;
Molding sand strikes off plane on casting mold after filling up sandbox, plastic sheeting in covering, and extruding extrudes cup;
Be connected with the filtration extraction tube of sandbox by vavuum pump, and extracted out by the air in sandbox, vacuum pressure is 5MPa to 6MPa, and molding sand is consolidation gradually;
Remove template vacuum, lift, is connected cooling water pipe with the die cavity of foundry goods;
Logical upper carbon dioxide in cooling water pipe;
Make to use the same method and produce mo(u)ld bottom half, the number of pressing mould assembling, vacuumizes cast, and foundry goods solidifies rear stopping vacuum completely;
After removing vacuum, sand mold is automatically defeated and dispersed;
Foundry goods is taken out cleaning polishing;
Carry out annealing in process, separate de-stress.
2. V method moulding calcium carbide smelting furnace as claimed in claim 1 goes out converter nose technique, it is characterized in that: the thickness that V method moulding calcium carbide smelting furnace goes out the high-temperature resistant coating brushed on a plastic film in converter nose technical process is 1mm to 2mm.
3. V method moulding calcium carbide smelting furnace as claimed in claim 1 goes out converter nose technique, it is characterized in that: the granularity that V method moulding calcium carbide smelting furnace goes out dry sand used in converter nose process engineering is 100 order to 200 orders.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310037974.2A CN103056311B (en) | 2013-01-31 | 2013-01-31 | Process for shaping furnace outlet nozzle of calcium carbide smelting furnace by using V method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310037974.2A CN103056311B (en) | 2013-01-31 | 2013-01-31 | Process for shaping furnace outlet nozzle of calcium carbide smelting furnace by using V method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103056311A CN103056311A (en) | 2013-04-24 |
| CN103056311B true CN103056311B (en) | 2015-07-08 |
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| CN201310037974.2A Expired - Fee Related CN103056311B (en) | 2013-01-31 | 2013-01-31 | Process for shaping furnace outlet nozzle of calcium carbide smelting furnace by using V method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103920850B (en) * | 2014-04-28 | 2016-07-06 | 文水县易鑫铸造有限公司 | A kind of V method casting technique |
| CN106670385A (en) * | 2016-12-29 | 2017-05-17 | 马正松 | V-method model casting process for casting household appliance 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 |
| CN114273609A (en) * | 2020-12-01 | 2022-04-05 | 安阳市凯创科技有限公司 | Medium-large precision casting part shell casting technology |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1478622A (en) * | 2003-01-21 | 2004-03-03 | 兰州理工大学 | Dissolve mould casting method and sand box |
| CN101342573A (en) * | 2008-09-09 | 2009-01-14 | 曲靖成浩实芯铸造有限公司 | Vacuum negative pressure real type phenolic sand molding lost foam casting method |
| CN102371353A (en) * | 2011-09-23 | 2012-03-14 | 浙江武精机器制造有限公司 | Sand negative pressure gravity casting die and casting method |
| CN102764852A (en) * | 2012-07-12 | 2012-11-07 | 中建材宁国新马耐磨材料有限公司 | Method for producing ultrahigh manganese steel jaw plate by adopting V-method casting |
-
2013
- 2013-01-31 CN CN201310037974.2A patent/CN103056311B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1478622A (en) * | 2003-01-21 | 2004-03-03 | 兰州理工大学 | Dissolve mould casting method and sand box |
| CN101342573A (en) * | 2008-09-09 | 2009-01-14 | 曲靖成浩实芯铸造有限公司 | Vacuum negative pressure real type phenolic sand molding lost foam casting method |
| CN102371353A (en) * | 2011-09-23 | 2012-03-14 | 浙江武精机器制造有限公司 | Sand negative pressure gravity casting die and casting method |
| CN102764852A (en) * | 2012-07-12 | 2012-11-07 | 中建材宁国新马耐磨材料有限公司 | Method for producing ultrahigh manganese steel jaw plate by adopting V-method casting |
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| CN103056311A (en) | 2013-04-24 |
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Granted publication date: 20150708 Termination date: 20190131 |