CN102304659A - Casting production technology of gray iron - Google Patents
Casting production technology of gray iron Download PDFInfo
- Publication number
- CN102304659A CN102304659A CN 201110283725 CN201110283725A CN102304659A CN 102304659 A CN102304659 A CN 102304659A CN 201110283725 CN201110283725 CN 201110283725 CN 201110283725 A CN201110283725 A CN 201110283725A CN 102304659 A CN102304659 A CN 102304659A
- Authority
- CN
- China
- Prior art keywords
- iron
- iron ore
- casting production
- smelting
- gray
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Landscapes
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
Abstract
The invention discloses casting production technology of gray iron. The raw materials are as follows: iron ore or iron ore powder, waste gray cast iron, scrap steel and coke in a weight ratio 13:7:5:5. In the smelting process, a cupola is used, the temperature of the furnace chamber of the cupola is kept at 1450+/-100 DEG C and the smelting time is 1h+/-10min. In the invention, the raw materials include iron ore or iron ore powder, waste gray cast iron, scrap steel and coke in the weight ratio of 13:7:5:5, and shoe-shaped iron is not used so that the price of the raw materials can be reduced; and as other chemical agents are not required, the cost is saved, the process steps are reduced, and the manpower and material resources are saved. The temperature of the furnace chamber is kept at 1450+/-100 DEG C and the smelting time is 1h+/-10min so as to obtain the best quality of the smelted product.
Description
Technical field
The present invention relates to casting production process, especially relate to a kind of casting production process of gray iron.
Background technology
Cast iron refers to that carbon content is at the iron-carbon more than 2%.The general carbon content of industrial cast iron is 2%～4%.Carbon is many in cast iron to be existed with graphite form, also exists with the cementite form sometimes.Outside the de-carbon, also contain 1%～3% silicon in the cast iron, and element such as manganese, phosphorus, sulphur.Cast alloy iron also contains elements such as nickel, chromium, molybdenum, aluminium, copper, boron, vanadium.Carbon, silicon are the principal elements that influences cast iron microstructure and performance.Cast iron can be divided into: grey cast iron, white cast iron, spheroidal graphite cast iron etc.It is with foundry iron (part conversion pig) (cupola furnace or circuit) refuse in stove, and adds iron alloy nucleating agents such as () ferro-silicons, steel scrap, foundry return adjustment composition and obtain.
Wherein, the carbon content of grey cast iron higher (2.7%～4.0%), carbon mainly exists with free state flake graphite form, and the fracture gray is called for short gray iron.Fusing point low (1145～1250 ℃), shrinkage is little when solidifying, and ultimate compression strength and hardness are near carbon steel, and damping property is good.
It has good castability, machinability is good; Anti-attrition property, the notch sensitivity that wear resistance is good, low adds that its fusing batching is simple; Cost is low, be widely used in manufacturing structure intricate casting and wearing piece, as: structural parts such as the lathe bed that produces lathes, cylinder, casing.
And the casting technique of existing gray iron 250 is:
One, the buying V-block is a raw material.
Two,, increase various alloys by the material requirement.
Three, increase rust remover.
Four, increase carburelant.
Five, according to the requirement of producer, increase and decrease various chemicaladditivess,, use cupola furnace to smelt by various proportioning raw materials to material.
Six, cast.
The shortcoming of this technology is: the buying V-block need spend substantial contribution; Increase various chemicaladditivess, allocation process is complicated, has increased working strength of workers and production cost.
Summary of the invention
The object of the present invention is to provide a kind of reduction prices of raw and semifnished materials, save the grey iron casting process that adds various chemicaladditivess.
Technical scheme of the present invention is:
The gray iron casting production process, used raw material is: iron ore or powdered iron ore, useless grey cast iron, steel scrap, coke, their weight ratio is 13:7:5:5.
Smelting process adopts cupola furnace, and the temperature of cupola furnace furnace chamber remains on 1450 ± 100 ℃, and the time of smelting is 1h ± 10 minute.
Raw material of the present invention is: iron ore or powdered iron ore, useless grey cast iron, steel scrap, coke, and weight ratio is 13:7:5:5, and does not re-use V-block; Reduce cost of material, do not needed to add again other chemical reagent, not only practiced thrift cost; And reduced process step, use manpower and material resources sparingly.The temperature of furnace chamber is remained on 1450 ± 100 ℃, and the time of smelting is 1h ± 10 minute, can make the best in quality of matallurgical products.
Description of drawings
Fig. 1 is the structural representation of cupola furnace of the present invention.
Embodiment
The finished product of the present invention are gray iron 250.The present invention is different with the employed raw material of existing processes, and what existing technology was used is V-block.
Raw material of the present invention is: iron ore or powdered iron ore, and useless grey cast iron, steel scrap, coke, weight ratio is 13:7:5:5.Adopt this batching, need not add various chemicaladditivess such as rust remover, carburelant again.Reduce the starting material purchase cost, save process step, use manpower and material resources sparingly.Technology is simple, and personnel operation is easy.
As shown in Figure 1, during smelting, charcoal 3 on base plate 2 upper berths of cupola body 1; Gas blower 7 is sent into oxygen to body of heater 1 air blast, after charcoal 3 burnings, raw material 4 is put on the charcoal 3; The temperature of furnace chamber should remain on 1450 ± 100 ℃ during smelting, and the time of smelting is 1h ± 10 minute.
Cast: molten iron is poured into preceding bag 5, and then pour into 6 li of mobile bags, pour in the mould; So far, accomplish the primary smelting engineering.Continue to add raw material, proceed to pour into a mould next time.
Claims (2)
1. gray iron casting production process, it is characterized in that: used raw material is: iron ore or powdered iron ore, useless grey cast iron, steel scrap, coke, their weight ratio is 13:7:5:5.
2. gray iron casting production process according to claim 1 is characterized in that: smelting process adopts cupola furnace, and the temperature of cupola furnace furnace chamber remains on 1450 ± 100 ℃, and the time of smelting is 1h ± 10 minute.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110283725 CN102304659A (en) | 2011-09-22 | 2011-09-22 | Casting production technology of gray iron |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110283725 CN102304659A (en) | 2011-09-22 | 2011-09-22 | Casting production technology of gray iron |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102304659A true CN102304659A (en) | 2012-01-04 |
Family
ID=45378571
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110283725 Pending CN102304659A (en) | 2011-09-22 | 2011-09-22 | Casting production technology of gray iron |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102304659A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676723A (en) * | 2012-05-08 | 2012-09-19 | 乔永刚 | Method for smelting ash iron by using cupola furnace |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306190A (en) * | 2000-01-19 | 2001-08-01 | 陈金河 | Direct-combustion hot air cupola furnace |
| CN1360062A (en) * | 2001-11-26 | 2002-07-24 | 张德安 | Process for producing nodular graphite cast iron and gray cast iron with cast iron filings in cupola furnace |
| CN101555565A (en) * | 2008-04-11 | 2009-10-14 | 广西玉柴机器股份有限公司 | Process for producing vermicular cast iron by cupola-line frequency furnace duplex melting |
| CN101671753A (en) * | 2009-10-09 | 2010-03-17 | 青特集团有限公司 | Method for preparing gray cast iron |
-
2011
- 2011-09-22 CN CN 201110283725 patent/CN102304659A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1306190A (en) * | 2000-01-19 | 2001-08-01 | 陈金河 | Direct-combustion hot air cupola furnace |
| CN1360062A (en) * | 2001-11-26 | 2002-07-24 | 张德安 | Process for producing nodular graphite cast iron and gray cast iron with cast iron filings in cupola furnace |
| CN101555565A (en) * | 2008-04-11 | 2009-10-14 | 广西玉柴机器股份有限公司 | Process for producing vermicular cast iron by cupola-line frequency furnace duplex melting |
| CN101671753A (en) * | 2009-10-09 | 2010-03-17 | 青特集团有限公司 | Method for preparing gray cast iron |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102676723A (en) * | 2012-05-08 | 2012-09-19 | 乔永刚 | Method for smelting ash iron by using cupola furnace |
| CN102676723B (en) * | 2012-05-08 | 2013-06-26 | 乔永刚 | Method for smelting ash iron by using cupola furnace |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101864533B (en) | Grinding ball specialized for mine | |
| CN101956140B (en) | Lining plate for large ball mill and casting method thereof | |
| CN104846265A (en) | Ultralow-temperature austenite wear-resistant ductile iron material and preparation method thereof | |
| CN105525190A (en) | Gray cast iron and manufacturing method thereof | |
| CN103725950B (en) | A kind of Low chrome multielement alloy cast ball production technique | |
| CN105441782A (en) | Ductile iron casting and manufacturing method thereof | |
| CN103320677A (en) | Spheroidal graphite cast iron and manufacturing method thereof | |
| CN106367671A (en) | Nodular cast iron edging roll suitable for universal rolling mill and manufacturing method thereof | |
| CN104480377B (en) | Vermicular graphite cast iron single cylinder diesel engine body with high vermicular graphite rate and preparation method thereof | |
| CN103436810A (en) | Production process for steel casting of martensitic wear-resistant steel | |
| CN103614644A (en) | Highly-wear-resistant alloy steel material used for pump trucks and preparation method of the alloy steel material | |
| CN103952618A (en) | Preparation method of abrasion-resistant alloy cast iron | |
| CN103589965A (en) | Low-alloy high-strength cast steel and preparation method thereof | |
| CN103614658A (en) | High-strength wear-resistant low-carbon steel material and preparation method thereof | |
| CN104073712B (en) | High-carbon vanadium titanium grey cast iron and manufacturing method thereof, as well as vehicle brake disk and manufacturing method thereof | |
| CN105401063A (en) | As-cast malleable cast iron cylinder sleeve produced through centrifugal casting and production process of as-cast malleable cast iron cylinder sleeve | |
| CN105132790A (en) | Vanadium-containing carbidic austempered ductile iron and preparation method thereof | |
| CN102304659A (en) | Casting production technology of gray iron | |
| CN105695856A (en) | Nodular cast iron for high-toughness driving axle housing of high-end load-bearing forklift and production method thereof | |
| CN104988378A (en) | Mold special for ductile iron grinding balls and manufacturing technology of mold | |
| CN105316566A (en) | Abrasion-resistant ball special for mines and manufacturing method for abrasion-resistant ball | |
| CN111748722A (en) | Nodular cast iron and preparation method thereof | |
| CN106367663B (en) | A kind of trace alloying technology of spheroidal graphite cast-iron | |
| CN102251169B (en) | Smelting ingredients of support | |
| CN106566978A (en) | Boron containing wear-resisting cast iron and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20120104 |