CN104942226A - Casting process of engine cylinder body - Google Patents
Casting process of engine cylinder body Download PDFInfo
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- CN104942226A CN104942226A CN201510261772.5A CN201510261772A CN104942226A CN 104942226 A CN104942226 A CN 104942226A CN 201510261772 A CN201510261772 A CN 201510261772A CN 104942226 A CN104942226 A CN 104942226A
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- bauxite
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Abstract
The invention discloses a casting process of an engine cylinder body. The casting process comprises the following steps: preparation of molding sand, molding, mold assembly, casting and clearing of falling sand, wherein the step of preparation comprises the specific operations: adopting 44%-58% of bauxite powder, 15%-28% of bauxite sand, 4%-8% of silicate powder, 10%-17% of silica sol, 3%-9% of dextrin according to the mass percentage, and adopting a sand mixing machine for preparing the molding sand; and firstly adding the bauxite powder, the bauxite sand and the silicate powder into the sand mixing machine, stirring for 2-4 hours, then adding the dextrin with the formula ratio, stirring for 30-40 minutes, and preparing out the molding sand. The casting process disclosed by the invention has the advantages that the prepared molding sand is high in strength and slow in heat conductivity; compared with the graphite, the chilling action of mold casting can be effectively reduced, the mold filling capability of liquid metal can be improved, and the defect probability of cold shut and flow marks and the like on the surface can be effectively reduced; the production period is short, and the production efficiency is high; the process is simple in manufacture, and the source of materials is wide.
Description
Technical field
The present invention relates to the application in diesel engine part Casting Technology field, particularly relate to a kind of casting technique of engine cylinder block.
Background technology
The condition of work of engine cylinder block is very severe.It will bear the strong friction of sharply change and the piston movement of pressure and temperature in combustion process.Therefore, it should have following performance:
Have enough strength and stiffness, be out of shape little, ensure that each moving parts position is correct, work well, vibration noise is little, and possesses good cooling performance.Therefore, part producer can select the material of some high chemical stabilities, the metal that when often having some high temperature in these materials, activity is high, and they easily react with sand mold, the effect that impact manufactures a finished product.
Summary of the invention
In order to solve the problem existing for background technology, the object of this invention is to provide a kind of casting technique of engine cylinder block, the mould strength that the sand mould material that it uses makes is high, heat conduction is slow, manufacture craft is simple, material source is wide.
To achieve these goals, technical scheme of the present invention is achieved in that a kind of casting technique of engine cylinder block, described processing step comprises: molding sand preparation-moulding-mould assembly-cast-peeling, the concrete operations of described molding sand preparation are: according to sand using amount, according to mass percent bauxite powder 44% ~ 58%, bauxite sand 15% ~ 28%, silicate powder 4% ~ 8%, Ludox 10% ~ 17%, dextrin 3% ~ 9%, adopt puddle mixer preparation molding sand; First described bauxite powder, bauxite sand, silicate powder are added in puddle mixer, stir after 2 ~ 4 hours, add the described Ludox of formula ratio, then add the described dextrin of formula ratio, stir after 30 ~ 40 minutes, prepare molding sand.
Further, inovulant is added in described casting process.
The present invention has following beneficial effect: adopt the present invention can produce the high sand mold of intensity, is applicable to the foundry goods pouring into a mould active metal; Sand mold heat conduction is slow, can effectively reduce casting mold chilling action with graphite-phase ratio, improves the mold-filling capacity of liquid metal, effectively lowers surface and occurs the defect such as cold shut, current mark probability; With short production cycle, production efficiency is high; Technique makes simple, and raw material sources is extensive.
Detailed description of the invention
Embodiment one:
Molding sand is prepared: add in puddle mixer according to formula ratio by bauxite powder 44%, bauxite sand 28%, silicate powder 8%, stir after 4 hours, add described Ludox 11%, then add described dextrin 9%, stir after 30 minutes, prepare molding sand;
Moulding: according to casting technique drawing making mould.Appropriate molding sand is loaded in mould and produces mo(u)ld top half, mo(u)ld bottom half, core, by the mold drying made;
Mould assembly: dried mo(u)ld top half, mo(u)ld bottom half, core are combined;
Cast: liquid metals is injected described mould assembly sand mold inner, and add inovulant;
Peeling: be separated sand mold after cooling, obtains casting finished products.
Embodiment two:
Molding sand is prepared: add in puddle mixer according to formula ratio by bauxite powder 58%, bauxite sand 15%, silicate powder 6%, stir after 3 hours, add described Ludox 17%, then add described dextrin 4%, stir after 35 minutes, prepare molding sand;
Moulding: according to casting technique drawing making mould.Appropriate molding sand is loaded in mould and produces mo(u)ld top half, mo(u)ld bottom half, core, by the mold drying made;
Mould assembly: dried mo(u)ld top half, mo(u)ld bottom half, core are combined;
Cast: liquid metals is injected described mould assembly sand mold inner, and add inovulant;
Peeling: be separated sand mold after cooling, obtains casting finished products.
Embodiment three:
Molding sand is prepared: add in puddle mixer according to formula ratio by bauxite powder 50%, bauxite sand 22%, silicate powder 4%, stir after 2 hours, add described Ludox 15%, then add described dextrin 9%, stir after 40 minutes, prepare molding sand;
Moulding: according to casting technique drawing making mould.Appropriate molding sand is loaded in mould and produces mo(u)ld top half, mo(u)ld bottom half, core, by the mold drying made;
Mould assembly: dried mo(u)ld top half, mo(u)ld bottom half, core are combined;
Cast: liquid metals is injected described mould assembly sand mold inner, and add inovulant;
Peeling: be separated sand mold after cooling, obtains casting finished products.
What finally illustrate is, above embodiment is only in order to illustrate technical scheme of the present invention and unrestricted, other amendments that those of ordinary skill in the art make technical scheme of the present invention or equivalently to replace, only otherwise depart from the spirit and scope of technical solution of the present invention, all should be encompassed in the middle of right of the present invention.
Claims (2)
1. the casting technique of an engine cylinder block, described processing step comprises: molding sand preparation-moulding-mould assembly-cast-peeling, it is characterized in that, the concrete operations of described molding sand preparation are: according to sand using amount, according to mass percent bauxite powder 44% ~ 58%, bauxite sand 15% ~ 28%, silicate powder 4% ~ 8%, Ludox 10% ~ 17%, dextrin 3% ~ 9%, adopt puddle mixer preparation molding sand; First described bauxite powder, bauxite sand, silicate powder are added in puddle mixer, stir after 2 ~ 4 hours, add the described Ludox of formula ratio, then add the described dextrin of formula ratio, stir after 30 ~ 40 minutes, prepare molding sand.
2. the casting technique of a kind of engine cylinder block according to claim 1, is characterized in that, adds inovulant in described casting process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510261772.5A CN104942226A (en) | 2015-05-21 | 2015-05-21 | Casting process of engine cylinder body |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510261772.5A CN104942226A (en) | 2015-05-21 | 2015-05-21 | Casting process of engine cylinder body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104942226A true CN104942226A (en) | 2015-09-30 |
Family
ID=54157584
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510261772.5A Pending CN104942226A (en) | 2015-05-21 | 2015-05-21 | Casting process of engine cylinder body |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104942226A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108687675A (en) * | 2018-04-24 | 2018-10-23 | 上柴动力海安有限公司 | A kind of cylinder head casting cleaning conveying production technology of environment-friendly type diesel engine for automobile |
| CN111482556A (en) * | 2020-05-21 | 2020-08-04 | 宜宾普什联动科技有限公司 | Casting method of engine cylinder block casting |
-
2015
- 2015-05-21 CN CN201510261772.5A patent/CN104942226A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108687675A (en) * | 2018-04-24 | 2018-10-23 | 上柴动力海安有限公司 | A kind of cylinder head casting cleaning conveying production technology of environment-friendly type diesel engine for automobile |
| CN108687675B (en) * | 2018-04-24 | 2020-04-03 | 上柴动力海安有限公司 | Cleaning and conveying production process for cylinder cover casting of environment-friendly vehicle diesel engine |
| CN111482556A (en) * | 2020-05-21 | 2020-08-04 | 宜宾普什联动科技有限公司 | Casting method of engine cylinder block casting |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150930 |
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| WD01 | Invention patent application deemed withdrawn after publication |