CN103480816B - A kind of ship cylinder casting process of cylinder cap - Google Patents
A kind of ship cylinder casting process of cylinder cap Download PDFInfo
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- CN103480816B CN103480816B CN201210191350.1A CN201210191350A CN103480816B CN 103480816 B CN103480816 B CN 103480816B CN 201210191350 A CN201210191350 A CN 201210191350A CN 103480816 B CN103480816 B CN 103480816B
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- cylinder cap
- external mold
- cylinder
- molten iron
- casting process
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Abstract
The invention discloses a kind of ship cylinder casting process of cylinder cap, it is characterized in that, select GB to be RuT420-1, tensile strength is>=440N/mm
2, the cast iron materials of percentage elongation>=1%, is smelted into molten iron as in fusing stove; Select the sand mold containing resin as the external mold of cylinder cap, and clean out in cylinder cap external mold; To smear in cylinder cap external mold evenly with Mog coating, mould assembly, is cast in the cylinder cap external mold after smearing by molten iron, and workpiece is taken out in insulation.The present invention is imitated and is solved cylinder cap outbreak surface CV alienation problem, improves product quality, greatly reduces the loss due to spoiled work of foundry goods.
Description
Technical field
The present invention relates to a kind of cylinder part casting technique, be specifically related to a kind of ship cylinder casting process of cylinder cap.
Background technology
Cylinder cap will note 2 points in casting process, the selection of mould, and due to when casting in the past, due to the employing of mould external form is sand mold external mold, and containing a large amount of S, H in sand mold
2, O
2harmful element, and these harmful elements, cause Mg content during molten iron compactedization to reduce, thus have impact on the quality of cylinder cap.
Summary of the invention
Technical problem to be solved by this invention is that providing a kind of effectively solves cylinder cap outbreak surface CV alienation problem, improves product quality, greatly reduces a kind of ship cylinder casting process of cylinder cap of the loss due to spoiled work of foundry goods.
Technical problem to be solved by this invention realizes by the following technical solutions.
A kind of ship cylinder casting process of cylinder cap, it is characterized in that, the casting technique step of this invention is as follows:
Step a, select GB to be RuT420-1, tensile strength is>=440N/mm
2, the cast iron materials of percentage elongation>=1%, is smelted into molten iron as in fusing stove;
Step b, select the sand mold containing resin as the external mold of cylinder cap, and clean out in cylinder cap external mold;
Step c, will smear in cylinder cap external mold evenly with Mog coating, mould assembly, is cast in the cylinder cap external mold after smearing by the molten iron in step a, insulation, takes out workpiece.
Smelting temperature in above-mentioned steps a is between 1490-1510 DEG C.
In above-mentioned steps b containing resin bonded sand mould cylinder cap external mold, the ratio that its resin accounts for sand is 0.9%-1%.
Mg in above-mentioned steps c in Mgo coating can in and sand mold in S, H
2, O
2deng harmful element, ensure that the Mg content of molten iron compactedization is not reduced, heat insulation effect can be played after casting molten iron again simultaneously.
The invention has the beneficial effects as follows:
1, by the sand mold external mold containing resin, ensure that the intensity of sand mold when casting and watering;
2, by smearing Mgo coating in sand mold inside and coming and the harmful element such as S, H, O in sand mold, ensure that the Mg content of molten iron compactedization is not reduced, effectively solve cylinder cap outbreak surface CV alienation problem, thus improve casting quality.
Detailed description of the invention
Embodiment 1
A kind of ship cylinder casting process of cylinder cap, the casting technique step of this invention is as follows:
1., select GB to be RuT420-1, tensile strength is>=440N/mm
2, the cast iron materials of percentage elongation>=1%, as in fusing stove, is smelted into molten iron with the high temperature of 1500 DEG C by cast iron materials;
2., select the sand mold containing resin as the external mold of cylinder cap, and clean out in cylinder cap external mold;
3., with Mog coating will smear in cylinder cap external mold evenly, mould assembly, is cast in the cylinder cap external mold after smearing by the molten iron 1., insulation, takes out workpiece.
Above-mentioned 2. in containing resin bonded sand mould cylinder cap external mold, the ratio that its resin accounts for sand is 0.9%-1%.
Above-mentioned 3. in Mg in Mgo coating can in and S, H in sand mold
2, O
2deng harmful element, ensure that the Mg content of molten iron compactedization is not reduced, heat insulation effect can be played after casting molten iron again simultaneously.
More than show and describe general principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; the present invention is not restricted to the described embodiments; what describe in above-described embodiment and description just illustrates principle of the present invention; without departing from the spirit and scope of the present invention; the present invention also has various changes and modifications, and these changes and improvements all fall in the claimed scope of the invention.Application claims protection domain is defined by appending claims and equivalent thereof.
Claims (2)
1. a ship cylinder casting process of cylinder cap, is characterized in that: this casting technique step is as follows,
A, select GB to be RuT420-1, tensile strength is>=440N/mm
2, the cast iron materials of percentage elongation>=1%, is placed in fusing stove, and heats to 1490 DEG C-1510 DEG C to fusing stove, makes Castiron Melting become molten iron;
B, select the sand mold containing resin as the external mold of cylinder cap, and clean out in cylinder cap external mold;
C, will smear in cylinder cap external mold evenly with MgO coating, mould assembly, is cast in the cylinder cap external mold after smearing by the molten iron in step a, insulation, takes out workpiece.
2. a kind of ship cylinder casting process of cylinder cap according to claim 1, is characterized in that: the external mold of the cylinder cap of the sand mold containing resin in described step b, the ratio that its resin accounts for sand is 0.9%-1%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210191350.1A CN103480816B (en) | 2012-06-12 | 2012-06-12 | A kind of ship cylinder casting process of cylinder cap |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210191350.1A CN103480816B (en) | 2012-06-12 | 2012-06-12 | A kind of ship cylinder casting process of cylinder cap |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103480816A CN103480816A (en) | 2014-01-01 |
| CN103480816B true CN103480816B (en) | 2016-03-30 |
Family
ID=49821600
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201210191350.1A Active CN103480816B (en) | 2012-06-12 | 2012-06-12 | A kind of ship cylinder casting process of cylinder cap |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103480816B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108952990A (en) * | 2018-06-27 | 2018-12-07 | 山西中条山机电设备有限公司 | A kind of high-strength alloy cast-iron head and its production technology |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1394730A (en) * | 1972-10-10 | 1975-05-21 | Foseco Int | Refractory dressings |
| JPH01138038A (en) * | 1987-11-24 | 1989-05-30 | Mitsui Eng & Shipbuild Co Ltd | Manufacture of mold |
| CN1493414A (en) * | 2002-10-28 | 2004-05-05 | 王玉和 | Method of casting loading machine large speed changing box body using vanishing mould |
| CN1843657A (en) * | 2006-04-25 | 2006-10-11 | 安徽天钰机械股份有限公司 | Lost-foam casting process for cylinder body and cylinder cap of diesel engine and gasoline engine |
| CN101927337A (en) * | 2010-07-27 | 2010-12-29 | 重庆福德助友农业机械有限公司 | Technical process for casting cylinder cover and engine body component of diesel engine |
| CN102039372A (en) * | 2011-01-11 | 2011-05-04 | 大连鸿骏源机械有限公司 | Lost foam casting method |
-
2012
- 2012-06-12 CN CN201210191350.1A patent/CN103480816B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1394730A (en) * | 1972-10-10 | 1975-05-21 | Foseco Int | Refractory dressings |
| JPH01138038A (en) * | 1987-11-24 | 1989-05-30 | Mitsui Eng & Shipbuild Co Ltd | Manufacture of mold |
| CN1493414A (en) * | 2002-10-28 | 2004-05-05 | 王玉和 | Method of casting loading machine large speed changing box body using vanishing mould |
| CN1843657A (en) * | 2006-04-25 | 2006-10-11 | 安徽天钰机械股份有限公司 | Lost-foam casting process for cylinder body and cylinder cap of diesel engine and gasoline engine |
| CN101927337A (en) * | 2010-07-27 | 2010-12-29 | 重庆福德助友农业机械有限公司 | Technical process for casting cylinder cover and engine body component of diesel engine |
| CN102039372A (en) * | 2011-01-11 | 2011-05-04 | 大连鸿骏源机械有限公司 | Lost foam casting method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103480816A (en) | 2014-01-01 |
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