CN103084546A - Casting method of valve cover casting - Google Patents
Casting method of valve cover casting Download PDFInfo
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- CN103084546A CN103084546A CN2013100460636A CN201310046063A CN103084546A CN 103084546 A CN103084546 A CN 103084546A CN 2013100460636 A CN2013100460636 A CN 2013100460636A CN 201310046063 A CN201310046063 A CN 201310046063A CN 103084546 A CN103084546 A CN 103084546A
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- valve gap
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- foundry goods
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Abstract
The invention discloses a casting method of a valve cover casting. The method concretely comprises the following steps: 1, designing a technology and dies according to a proportional solidification technology, and making a lower type die, an upper type die and a cast die; 2, shooting on corresponding hot core box shooters to make a lower type sand core, an upper type sand core and a cast sand core; and 3, trimming and assembling the above sand cores, tightly clamping the assembled sand cores with a clamp, and carrying out cast molding to obtain the valve core casting. The valve cover casting has a high coated die sand mold surface hardness, can fully perform the graphitization expansion in nodular cast iron to carry out self-feeding, and adopts hot side casting of a cast gate, and the cast gate which is short, thin and wide can fully perform its self-adaptive adjustment effect; the shrinkage porosity and shrinkage cavity defects are thoroughly eliminated, the cast gate which is thin has a good slag baffling effect, defects comprising slag blowholes and the like are basically eliminated, and the casting yield is above 95%; and cold iron is thoroughly removed, the operation is simple, and the production efficiency is improved to a great extent.
Description
Technical field
The present invention relates to a kind of pouring technology method, particularly relate to a kind of pouring technology method of valve gap foundry goods.
Background technology
Former technique running gate system is to solidify principle according to general the time to formulate, as shown in Figure 1, must could process rear without shrinkage porosity defect of contraction cavity by basic guarantee thermal center part surface by the feeding of chill 3 and running gate system, due to this product employing is shell moulded casting, shell is the system of penetrating on hot box shoot core machine, and larger in batches, uses a large amount of chills not only to have influence on manufacturing schedule, and chill needs processing, coating.Chill not only can lose efficacy after using for several times, and because coating is uneven, moisture absorption also can produce the defectives such as pore, cinder hole, real uncomfortable production in batches, and under the normal condition of production, yield rate is difficult to reach 80% left and right.
Summary of the invention
For the deficiencies in the prior art, the object of the invention is to, all pouring procedures of very high valve gap foundry goods of a kind of simple to operation, production efficiency and yield rate are provided.
For solving the problems of the technologies described above, the technical solution used in the present invention is: a kind of pouring procedure of valve gap foundry goods, it is characterized in that, and its concrete steps are:
(1) at first carry out technique, Design of Dies according to the Equilibrium Solidification principle, be made into mo(u)ld bottom half, mo(u)ld top half and valve gated mold;
(2) penetrate mo(u)ld bottom half core processed, mo(u)ld top half core and cast gate core on corresponding hot box shoot core machine;
(3) finishing, assembling core clamp with fixture the core that assembles the moulding of valve gap casting pouring.
The pouring procedure of aforesaid a kind of valve gap foundry goods is characterized in that: the cast gate of described valve cover die comprises ingate, adopts hot side to water ingate, and the width of described ingate is not less than 40 ㎜, and thickness is not more than 7 ㎜, and length is less than 10 ㎜.
The pouring procedure of aforesaid a kind of valve gap foundry goods is characterized in that: the cast gate of described valve cover die comprises down gate, and the diameter of described down gate is more than the twice of the maximum thermal center of valve gap.
The pouring procedure of aforesaid a kind of valve gap foundry goods is characterized in that: the diameter of described down gate is 50 ㎜.
The pouring procedure of aforesaid a kind of valve gap foundry goods is characterized in that: the material of described valve gap is spheroidal graphite cast-iron.
The pouring procedure of aforesaid a kind of valve gap foundry goods is characterized in that: the head thermal center thickness of described valve gap is 20 ㎜.
The invention has the beneficial effects as follows:
1. cover the model sand mold case hardness high, can give full play to graphitization Peng in spheroidal graphite cast-iron and rise to produce and carry out from feeding, and adopt hot side to water ingate, ingate is short, book, wide, makes ingate give full play to its adaptive regulating action;
2. through small quantities of, large quantities of production checking, the valve gap foundry goods has thoroughly been eliminated shrinkage porosite, shrinkage cavity defect, and due to ingate than book, played better pushing off the slag effect, also substantially eliminated the defectives such as cinder hole, casting yield reaches more than 95%;
3. thoroughly remove chill, make operation simpler and more direct, improved to a great extent production efficiency.
Description of drawings
Fig. 1 is the structural representation of the valve gap produced of the pouring procedure of former valve gap foundry goods;
Fig. 2 is the structural representation that utilizes the valve gap of pouring procedure production of the present invention;
Fig. 3 is process chart of the present invention.
In figure, the implication of each main Reference numeral is: 1. valve gap peripheral wall; 2. thermal center easily produces the shrinkage porosite place; 3. chill.
The specific embodiment
For further disclosing technical scheme of the present invention, describe embodiments of the present invention in detail below in conjunction with accompanying drawing: as shown in Figure 3, a kind of pouring procedure of valve gap foundry goods, its concrete steps are:
(1) at first carry out technique, Design of Dies according to the Equilibrium Solidification principle, be made into mo(u)ld bottom half, mo(u)ld top half and valve gated mold;
(2) penetrate mo(u)ld bottom half core processed, mo(u)ld top half core and cast gate core on corresponding hot box shoot core machine;
(3) finishing, assembling core clamp with fixture the core that assembles the moulding of valve gap casting pouring.
The cast gate of valve cover die comprises ingate, adopts hot side to water ingate, and the width of described ingate is not less than 40 ㎜, and thickness is not more than 7 ㎜, and length is less than 10 ㎜.
The cast gate of valve cover die comprises down gate, and the diameter of down gate is that more than the twice of the maximum thermal center of valve gap, the diameter of down gate can be 50 ㎜.
As shown in Figure 2, the material of valve gap is spheroidal graphite cast-iron, and the peripheral wall 1 of valve gap is thick is 7 ㎜, and head thermal center 2 thickness of valve gap are 20 ㎜.The head of valve gap is key position, not only plays positioning action, and plays the guide effect of valve rod, and bore area can not have any casting flaw.Through small quantities of, large quantities of production checking, the valve gap foundry goods has thoroughly been eliminated shrinkage porosite, shrinkage cavity defect, and due to ingate than book, played better pushing off the slag effect, also substantially eliminated the defectives such as cinder hole, casting yield reaches more than 95%; Thoroughly remove chill 3, make operation simpler and more direct, improved to a great extent production efficiency.
More than by description of listed embodiment, the basic ideas and basic principles of the present invention have been set forth.But the present invention never is limited to above-mentioned listed embodiment, and every equivalent variations, improvement and deliberately of inferior quality behavior of change of doing based on technical scheme of the present invention all should belong to protection scope of the present invention.
Claims (6)
1. the pouring procedure of a valve gap foundry goods, is characterized in that, its concrete steps are:
(1) at first carry out technique, Design of Dies according to the Equilibrium Solidification principle, be made into mo(u)ld bottom half, mo(u)ld top half and valve gated mold;
(2) penetrate mo(u)ld bottom half core processed, mo(u)ld top half core and cast gate core on corresponding hot box shoot core machine;
(3) finishing, assembling core clamp with fixture the core that assembles the moulding of valve gap casting pouring.
2. the pouring procedure of a kind of valve gap foundry goods according to claim 1, it is characterized in that: the cast gate of described valve cover die comprises ingate, adopts hot side to water ingate, and the width of described ingate is not less than 40 ㎜, and thickness is not more than 7 ㎜, and length is less than 10 ㎜.
3. the pouring procedure of a kind of valve gap foundry goods according to claim 1, it is characterized in that: the cast gate of described valve cover die comprises down gate, the diameter of described down gate is more than the twice of the maximum thermal center of valve gap.
4. the pouring procedure of a kind of valve gap foundry goods according to claim 3, it is characterized in that: the diameter of described down gate is 50 ㎜.
5. the pouring procedure of a kind of valve gap foundry goods according to claim 1, it is characterized in that: the material of described valve gap is spheroidal graphite cast-iron.
6. the pouring procedure of arbitrary described a kind of valve gap foundry goods according to claim 1-5, it is characterized in that: the head thermal center thickness of described valve gap is 20 ㎜.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310046063.6A CN103084546B (en) | 2013-02-06 | 2013-02-06 | A kind of pouring procedure of valve gap foundry goods |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310046063.6A CN103084546B (en) | 2013-02-06 | 2013-02-06 | A kind of pouring procedure of valve gap foundry goods |
Publications (2)
| Publication Number | Publication Date |
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| CN103084546A true CN103084546A (en) | 2013-05-08 |
| CN103084546B CN103084546B (en) | 2016-08-03 |
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| CN201310046063.6A Active CN103084546B (en) | 2013-02-06 | 2013-02-06 | A kind of pouring procedure of valve gap foundry goods |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557086A (en) * | 2013-10-30 | 2014-02-05 | 宁波裕隆汽车制泵有限公司 | Gear chamber on pump for car as well as die design and manufacturing thereof |
| CN103586414A (en) * | 2013-11-04 | 2014-02-19 | 沈阳化工大学 | Method for production of small and medium-sized steel castings by coated sand technology |
| CN103862000A (en) * | 2014-04-04 | 2014-06-18 | 江苏力源金河铸造有限公司 | Vertical parting horizontal pouring casting technology for end cover casting core shell |
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| JPS58151936A (en) * | 1982-03-02 | 1983-09-09 | Toyota Motor Corp | Construction of core for casting |
| CN101020226A (en) * | 2007-03-15 | 2007-08-22 | 繁昌县金贸铸造有限责任公司 | Flange casting process |
| CN201455180U (en) * | 2009-06-23 | 2010-05-12 | 河南省西峡汽车水泵股份有限公司 | Ductile iron non-riser casting die |
| CN202174212U (en) * | 2011-08-01 | 2012-03-28 | 繁昌县胜达铸造厂 | Coated sand valve cover die |
| CN102418028A (en) * | 2011-12-12 | 2012-04-18 | 大丰市海纳机械有限公司 | Impeller special for automobile cooling water pump and casting process of impeller |
| CN102489667A (en) * | 2011-12-16 | 2012-06-13 | 十堰市泰祥实业有限公司 | Casting method for spheroidal graphite cast iron main bearing cap of gasoline engine and casting mould applying same |
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| CN102814465A (en) * | 2012-04-06 | 2012-12-12 | 河北锐利机械科技有限公司 | Spheroidal graphite cast iron casting mould and riser-free casting method adopting same |
| CN102861894A (en) * | 2012-09-23 | 2013-01-09 | 衡阳中钢衡重铸锻有限公司 | Production method for wind power equipment stator |
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2013
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| JPS58151936A (en) * | 1982-03-02 | 1983-09-09 | Toyota Motor Corp | Construction of core for casting |
| CN101020226A (en) * | 2007-03-15 | 2007-08-22 | 繁昌县金贸铸造有限责任公司 | Flange casting process |
| CN201455180U (en) * | 2009-06-23 | 2010-05-12 | 河南省西峡汽车水泵股份有限公司 | Ductile iron non-riser casting die |
| CN202174212U (en) * | 2011-08-01 | 2012-03-28 | 繁昌县胜达铸造厂 | Coated sand valve cover die |
| CN102418028A (en) * | 2011-12-12 | 2012-04-18 | 大丰市海纳机械有限公司 | Impeller special for automobile cooling water pump and casting process of impeller |
| CN102489667A (en) * | 2011-12-16 | 2012-06-13 | 十堰市泰祥实业有限公司 | Casting method for spheroidal graphite cast iron main bearing cap of gasoline engine and casting mould applying same |
| CN102554130A (en) * | 2012-01-31 | 2012-07-11 | 西峡县内燃机进排气管有限责任公司 | Casting method for high-nickel austenite nodular cast iron exhaust manifold |
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| CN102861894A (en) * | 2012-09-23 | 2013-01-09 | 衡阳中钢衡重铸锻有限公司 | Production method for wind power equipment stator |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103557086A (en) * | 2013-10-30 | 2014-02-05 | 宁波裕隆汽车制泵有限公司 | Gear chamber on pump for car as well as die design and manufacturing thereof |
| CN103557086B (en) * | 2013-10-30 | 2016-03-02 | 宁波裕隆汽车制泵有限公司 | The manufacture method of the gear chamber mould on automobile pump |
| CN103586414A (en) * | 2013-11-04 | 2014-02-19 | 沈阳化工大学 | Method for production of small and medium-sized steel castings by coated sand technology |
| CN103862000A (en) * | 2014-04-04 | 2014-06-18 | 江苏力源金河铸造有限公司 | Vertical parting horizontal pouring casting technology for end cover casting core shell |
| CN103862000B (en) * | 2014-04-04 | 2016-04-27 | 江苏力源金河铸造有限公司 | A kind of end cap foundry goods core shell vertical-parting casting on flat casting technique |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103084546B (en) | 2016-08-03 |
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