CN104451357A - Process for smelting and pouring engine body - Google Patents
Process for smelting and pouring engine body Download PDFInfo
- Publication number
- CN104451357A CN104451357A CN201410671224.5A CN201410671224A CN104451357A CN 104451357 A CN104451357 A CN 104451357A CN 201410671224 A CN201410671224 A CN 201410671224A CN 104451357 A CN104451357 A CN 104451357A
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- engine body
- melting
- molten iron
- pouring technology
- pouring
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Abstract
The invention discloses a process for smelting and pouring an engine body. The process comprises the following steps: preparing a raw material; smelting the raw material into molten iron; pouring the molten iron into a pouring ladle to form pouring liquid; and pouring to from a cast. By adopting the process disclosed by the invention, the percent of pass of the cast can be effectively improved, the cost of a manufacturing enterprise is reduced, and the benefit of the enterprise is increased at the same time.
Description
Technical field
The invention belongs to melting and placingJi Shu field, particularly a kind of melting of engine body and pouring technology.
Background technology
At present, for the making of engine body, this product surface is seen just common HT250 foundry goods, structure is also not very complicated, but due to its Working environment changeable, sometimes work in the suitable rugged environment of weather condition, thus quite high to the requirement of aspect of performance, in view of above-mentioned standard, current casting technique is molten with in casting process in refining, learies is large, impacts the production of enterprise.
Summary of the invention
The invention provides a kind of melting and pouring technology of engine body.
Technical scheme of the present invention is: a kind of melting of engine body and pouring technology, and this technique comprises the steps:
(1) raw material containing following chemical percents content is prepared:
C: 2.75-2.95%; Si: 1.90-2.05%; Mn: 0.95-1%; P≤0.12%; S≤0.11%; All the other are Fe;
(2) pearl sand is added on above-mentioned raw materials surface and be heated to smelting temperature, be smelted into molten iron;
(3) in casting ladle, place nucleating agent and aluminium liquid, and preheating is carried out to casting ladle molten iron;
(4) pour molten iron into casting ladle, breed rear skim rapidly after form potting syrup, ensure the content of following chemical composition: C: 3.0-3.3%; Si: 2.1-2.3%; Mn: 0.8-1.3%; P≤0.6%; S≤0.3%;
(5) at potting syrup surface coverage skim agent, after skimming, potting syrup is poured in sandbox, when potting syrup overflows rising head 100kg on sandbox, complete and pour into a mould and form foundry goods;
(6) add covering flux immediately after casting complete, and make foundry goods be incubated more than 72 hours in sandbox.
Preferably, remove the gred after raw material being smelted into molten iron in described step (2), then cover one deck pearl sand and come out of the stove.
Preferably, the aluminium liquid in described step (3) is 0.2% of iron water amount.
Preferably, described tapping temperature is 1610 DEG C-1620 DEG C.
Preferably, in described step (5), during cast, teeming temperature is 1540 DEG C-1570 DEG C.
Beneficial effect of the present invention: the qualification rate that effectively can be improved foundry goods by technique of the present invention, while reducing manufacturing enterprise's cost, adds the benefit of enterprise.
Embodiment
Embodiment provided by the invention is described in further detail:
The melting of engine body and a pouring technology, this technique comprises the steps:
(1) raw material containing following chemical percents content is prepared:
C: 2.75-2.95%; Si: 1.90-2.05%; Mn: 0.95-1%; P≤0.12%; S≤0.11%; All the other are Fe;
(2) pearl sand is added on above-mentioned raw materials surface and be heated to smelting temperature, be smelted into molten iron;
(3) in casting ladle, place nucleating agent and aluminium liquid, and preheating is carried out to casting ladle molten iron;
(4) pour molten iron into casting ladle, breed rear skim rapidly after form potting syrup, ensure the content of following chemical composition: C: 3.0-3.3%; Si: 2.1-2.3%; Mn: 0.8-1.3%; P≤0.6%; S≤0.3%;
(5) at potting syrup surface coverage skim agent, after skimming, potting syrup is poured in sandbox, when potting syrup overflows rising head 100kg on sandbox, complete and pour into a mould and form foundry goods, wherein, follow the principle of " slow, fast, slow " during cast, that is: water slowly during cast gate, avoid molten steel to water outside and to water on rim of a cup, aim at after water soon make foundry goods fill fast type, Filling Processes of Castings complete rear water slowly to reach water while the effect of mending;
(6) add covering flux immediately after casting complete, and make foundry goods be incubated more than 72 hours in sandbox.
Preferably, remove the gred after raw material being smelted into molten iron in described step (2), then cover one deck pearl sand and come out of the stove.
Preferably, the aluminium liquid in described step (3) is 0.2% of iron water amount.
Preferably, described tapping temperature is 1610 DEG C-1620 DEG C.
Preferably, in described step (5), during cast, teeming temperature is 1540 DEG C-1570 DEG C.
Guarantee of trying one's best when shell mould frames up waters that rod is vertical, so that water bar steel liquid feeding foundry goods, shell mould is non-vertical because of handling, and when burying sand, righting back-up sand is fixed.
Shell mould buries sand height to workpiece upper end, the surrounding of frame and water rod place and enclose sand more as far as possible, and to ensure that molten steel speed of cooling is slow, excellent feeding capacity is watered in raising.Sop up the loose sand watering in rod and water rim of a cup with compressed gas simultaneously.
Effectively can be improved the qualification rate of foundry goods by technique of the present invention, while reducing manufacturing enterprise's cost, add the benefit of enterprise.
In this description, the present invention is described with reference to its specific embodiment.But, still can make various amendment and conversion obviously and not deviate from the spirit and scope of the present invention.Therefore, specification sheets is regarded in an illustrative, rather than a restrictive.
Claims (5)
1. the melting of engine body and a pouring technology, is characterized in that: this technique comprises the steps:
(1) raw material containing following chemical percents content is prepared:
C: 2.75-2.95%; Si: 1.90-2.05%; Mn: 0.95-1%; P≤0.12%; S≤0.11%; All the other are Fe;
(2) pearl sand is added on above-mentioned raw materials surface and be heated to smelting temperature, be smelted into molten iron;
(3) in casting ladle, place nucleating agent and aluminium liquid, and preheating is carried out to casting ladle molten iron;
(4) pour molten iron into casting ladle, breed rear skim rapidly after form potting syrup, ensure the content of following chemical composition: C: 3.0-3.3%; Si: 2.1-2.3%; Mn: 0.8-1.3%; P≤0.6%; S≤0.3%;
(5) at potting syrup surface coverage skim agent, after skimming, potting syrup is poured in sandbox, when potting syrup overflows rising head 100kg on sandbox, complete and pour into a mould and form foundry goods;
(6) add covering flux immediately after casting complete, and make foundry goods be incubated more than 72 hours in sandbox.
2. the melting of engine body according to claim 1 and pouring technology, is characterized in that: remove the gred after raw material being smelted into molten iron in described step (2), then cover one deck pearl sand and come out of the stove.
3. the melting of engine body according to claim 1 and 2 and pouring technology, is characterized in that: the aluminium liquid in described step (3) is 0.2% of iron water amount.
4. the melting of engine body according to claim 2 and pouring technology, is characterized in that: described tapping temperature is 1610 DEG C-1620 DEG C.
5. the melting of engine body according to claim 1 and pouring technology, is characterized in that: in described step (5), during cast, teeming temperature is 1540 DEG C-1570 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410671224.5A CN104451357A (en) | 2014-11-21 | 2014-11-21 | Process for smelting and pouring engine body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410671224.5A CN104451357A (en) | 2014-11-21 | 2014-11-21 | Process for smelting and pouring engine body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104451357A true CN104451357A (en) | 2015-03-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410671224.5A Pending CN104451357A (en) | 2014-11-21 | 2014-11-21 | Process for smelting and pouring engine body |
Country Status (1)
| Country | Link |
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| CN (1) | CN104451357A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107243593A (en) * | 2017-05-14 | 2017-10-13 | 南通德瑞森复合材料有限公司 | A kind of glass-reinforced plastic material crankcase manufacture craft |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035069A (en) * | 1988-09-30 | 1989-08-30 | 昆明钢铁公司 | Molten cast iron for pouring steel ingot mould and production method thereof |
| CN102260816A (en) * | 2011-06-08 | 2011-11-30 | 苏州市海威特铸造厂 | Smelting and pouring process of diesel engine body |
| CN102925783A (en) * | 2012-10-09 | 2013-02-13 | 西安交通大学 | Method for preparing hypereutectic high chromium white cast iron |
| CN103045934A (en) * | 2011-10-17 | 2013-04-17 | 严方 | High performance low cast alloy iron air cylinder sleeve and casting process |
-
2014
- 2014-11-21 CN CN201410671224.5A patent/CN104451357A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1035069A (en) * | 1988-09-30 | 1989-08-30 | 昆明钢铁公司 | Molten cast iron for pouring steel ingot mould and production method thereof |
| CN102260816A (en) * | 2011-06-08 | 2011-11-30 | 苏州市海威特铸造厂 | Smelting and pouring process of diesel engine body |
| CN103045934A (en) * | 2011-10-17 | 2013-04-17 | 严方 | High performance low cast alloy iron air cylinder sleeve and casting process |
| CN102925783A (en) * | 2012-10-09 | 2013-02-13 | 西安交通大学 | Method for preparing hypereutectic high chromium white cast iron |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107243593A (en) * | 2017-05-14 | 2017-10-13 | 南通德瑞森复合材料有限公司 | A kind of glass-reinforced plastic material crankcase manufacture craft |
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| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150325 |