CN104999040A - Manufacturing technology of oil inflow valve casting - Google Patents
Manufacturing technology of oil inflow valve casting Download PDFInfo
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- CN104999040A CN104999040A CN201510354704.3A CN201510354704A CN104999040A CN 104999040 A CN104999040 A CN 104999040A CN 201510354704 A CN201510354704 A CN 201510354704A CN 104999040 A CN104999040 A CN 104999040A
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- sand
- shell mould
- inlet valve
- core
- shell
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Abstract
The invention relates to a manufacturing technology of an oil inflow valve casting. The manufacturing technology includes the steps that firstly, a metal mold plate required by an oil inflow valve is made of metal; secondly, the metal mold plate is heated to 180-280 DEG C; the metal mold plate is covered with molding sand which is hardened when being heated, and the molding sand is cured; the molding sand is heated and cured, and an upper shell mold and a lower shell mold are formed; four exhausting holes, a pouring gate and a boss are arranged on the shell molds; a riser runner is arranged in the boss; a water outflow groove is further arranged on the shell molds, and the four exhausting holes are connected into a whole through the water outflow groove and connected to the riser runner through the water outflow groove; a sand core of the an oil inflow valve is formed through chromite sand and fixed in the shell molds; and a cavity of the oil inflow valve is formed after the shell molds and the sand core are closed. The manufacturing technology has the beneficial effects that according to the technical scheme, due to the fact a main hole flow channel of the product is small and the exhausting holes cannot be arranged, the body riser runner must be arranged on the shell mold boss; the exhausting capacity is improved; and air holes are prevented.
Description
Technical field
The present invention relates to a kind of foundry goods manufacturing process, especially a kind of inlet valve foundry goods manufacturing process.
Background technology
at present, the internal galleries that the shell mould of inlet valve foundry goods manufacturing process and core are formed is less, core easily ruptures, and cannot place arbor again, and due to the sprue of this product less, cannot riser runner be set, so cast(ing) surface easily forms bubble, therefore, a kind of core not easy fracture and cast(ing) surface bubble-free inlet valve foundry goods manufacturing process is just badly in need of developing, through retrieval, do not find the same or analogous technical scheme with the present invention.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of core not easy fracture and cast(ing) surface bubble-free inlet valve foundry goods manufacturing process.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of inlet valve foundry goods manufacturing process, its innovative point is: its step is as follows
1) first, the metal form needed for inlet valve is made with metal;
2) secondly, metal form is being heated to 180 ~ 280 DEG C, then the molding sand that heat is hardened is being covered on metal form, molding sand is solidified;
3) then, again heating cure is carried out to molding sand, form upper and lower shell mould, described cope shell top has several truncated cone-shaped cavity for the formation of valve body surface boss, cope shell above this cavity is provided with the vertical row pore being communicated with cavity and shell mould outside, is provided with several horizontal guiding gutter being communicated with vertical row pore upper port at the upper surface of cope shell;
4) then, form the core of oil inlet valve by chromite sand, and core is being horizontally set in shell mould, after described upper and lower shell mould and core matched moulds, form the die cavity of an oil inlet valve;
5) then, a sandbox is manufactured by sand, described upper and lower shell mould embeds in sandbox, cavity between inside described upper and lower shell mould outer surface and sandbox is coated with layer of sand, be provided with the pouring and riser systems be communicated with shell mould in described layer of sand, described pouring and riser systems comprises a running channel and the rising head with shell mould quantity equity.
6) last, in die cavity, carry out injection moulding by pouring and riser systems, finally form oil inlet valve.
Further volume, is coated with one deck barrier paper between described shell mould and layer of sand.
Further, the diameter of described core runner is between 0.5 ~ 1.2cm.
The invention has the advantages that: the shell mould of technical solution of the present invention adopts resin-coated sand shell mould technique, and core adopts chromite sand core manufacturing craft, and structure is more stable, and intensity is higher, not yielding;
Technical solution of the present invention will change into end face by original moulding shell mould bottom surface, make the core support that utilized main aperture to have, and solve core breakage problem;
Technical solution of the present invention is less due to this product main aperture runner, and cannot settle steam vent, so must arrange body riser runner at shell mould boss, improves the generation that exhaust capacity prevents pore.
Technical solution of the present invention designs tank on original shell mould basis, is linked together by 4 steam vents, and then is connected to riser runner, and the water of each venthole can both be flowed out, and strengthens exhaust, and perfection solves the bubble phenomenon that cast(ing) surface exists.
Accompanying drawing explanation
Fig. 1 is the sectional view of inlet valve casting die of the present invention.
Fig. 2 is the side view of inlet valve casting die of the present invention.
Detailed description of the invention
A kind of inlet valve foundry goods manufacturing process, its innovative point is: its step is as follows
1) first, the metal form needed for inlet valve is made with metal;
2) secondly, metal form is being heated to 180 ~ 280 DEG C, then the molding sand that heat is hardened is being covered on metal form, molding sand is solidified;
3) then, again heating cure is carried out to molding sand, form upper and lower shell mould 2, cope shell 2 top has several truncated cone-shaped cavity for the formation of valve body surface boss, cope shell 2 above this cavity is provided with the vertical row pore being communicated with cavity and shell mould outside, is provided with several horizontal guiding gutter being communicated with vertical row pore upper port at the upper surface of cope shell;
4) then, form the core 1 of oil inlet valve by chromite sand, and core 1 is being horizontally set in shell mould 2, after upper and lower shell mould 2 and core 1 matched moulds, form the die cavity of an oil inlet valve;
5) then, manufacture a sandbox 3 by sand, upper and lower shell mould 2 embeds in sandbox 3, and the cavity between inside upper and lower shell mould 2 outer surface and sandbox 3 is coated with layer of sand, be provided with the pouring and riser systems be communicated with shell mould 2 in layer of sand, pouring and riser systems comprises a running channel and the rising head with shell mould quantity equity.
6) last, in die cavity, carry out injection moulding by pouring and riser systems, finally form oil inlet valve.
Be coated with one deck barrier paper between the shell mould 2 of technical solution of the present invention and layer of sand, the sand when covering layer of sand can be stoped to fall in die cavity, affecting the qualification rate of product.
The diameter of core 1 runner of the present invention is between 0.5 ~ 1.2cm, and core 1 is thinner, and technical solution of the present invention will change into end face by original moulding shell mould 2 bottom surface, makes core 1 support that utilized main aperture to have, and solves core 1 breakage problem.
The shell mould 2 of technical solution of the present invention adopts resin-coated sand shell mould technique, and core adopts chromite sand core manufacturing craft, and structure is more stable, and intensity is higher, not yielding.
Technical solution of the present invention is less due to this product main aperture runner, and cannot settle steam vent, so must arrange body riser runner at shell mould 2 boss, improves the generation that exhaust capacity prevents pore.
Technical solution of the present invention designs tank on original shell mould basis, is linked together by several steam vent, and then is connected to riser runner, and the water of each venthole can both be flowed out, and strengthens exhaust, and perfection solves the bubble phenomenon that cast(ing) surface exists.
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 (3)
1. an inlet valve foundry goods manufacturing process, is characterized in that: its step is as follows
1) first, the metal form needed for inlet valve is made with metal;
2) secondly, metal form is being heated to 180 ~ 280 DEG C, then the molding sand that heat is hardened is being covered on metal form, molding sand is solidified;
3) then, again heating cure is carried out to molding sand, form upper and lower shell mould, described cope shell top has several truncated cone-shaped cavity for the formation of valve body surface boss, cope shell above this cavity is provided with the vertical row pore being communicated with cavity and shell mould outside, is provided with several horizontal guiding gutter being communicated with vertical row pore upper port at the upper surface of cope shell;
4) then, form the core of oil inlet valve by chromite sand, and core is being horizontally set in shell mould, after described upper and lower shell mould and core matched moulds, form the die cavity of an oil inlet valve;
5) then, a sandbox is manufactured by sand, described upper and lower shell mould embeds in sandbox, cavity between inside described upper and lower shell mould outer surface and sandbox is coated with layer of sand, be provided with the pouring and riser systems be communicated with shell mould in described layer of sand, described pouring and riser systems comprises a running channel and the rising head with shell mould quantity equity;
6) last, in die cavity, carry out injection moulding by pouring and riser systems, finally form oil inlet valve.
2. a kind of inlet valve foundry goods manufacturing process according to claim 1, is characterized in that: be coated with one deck barrier paper between described shell mould and layer of sand.
3. a kind of inlet valve foundry goods manufacturing process according to claim 1, is characterized in that: the diameter of described core runner is between 0.5 ~ 1.2cm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510354704.3A CN104999040A (en) | 2015-06-25 | 2015-06-25 | Manufacturing technology of oil inflow valve casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510354704.3A CN104999040A (en) | 2015-06-25 | 2015-06-25 | Manufacturing technology of oil inflow valve casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104999040A true CN104999040A (en) | 2015-10-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510354704.3A Pending CN104999040A (en) | 2015-06-25 | 2015-06-25 | Manufacturing technology of oil inflow valve casting |
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| CN (1) | CN104999040A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825418A (en) * | 2017-04-13 | 2017-06-13 | 扬州广润机械有限公司 | A kind of profile-followed metal support mould resin-coated sand shell mould casting mould component |
| CN107042290A (en) * | 2017-06-12 | 2017-08-15 | 南通华东油压科技有限公司 | A kind of integral multitandem valve casting and its casting technique |
| CN107052265A (en) * | 2017-06-12 | 2017-08-18 | 南通华东油压科技有限公司 | A kind of valve body of monoblock type three and its casting technique |
| CN107081408A (en) * | 2017-06-12 | 2017-08-22 | 南通华东油压科技有限公司 | A kind of monoblock type valve body moulding and its technique |
| CN109175258A (en) * | 2018-09-13 | 2019-01-11 | 南通华东油压科技有限公司 | A kind of manufacturing method of novel directional control valve casting |
-
2015
- 2015-06-25 CN CN201510354704.3A patent/CN104999040A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106825418A (en) * | 2017-04-13 | 2017-06-13 | 扬州广润机械有限公司 | A kind of profile-followed metal support mould resin-coated sand shell mould casting mould component |
| CN107042290A (en) * | 2017-06-12 | 2017-08-15 | 南通华东油压科技有限公司 | A kind of integral multitandem valve casting and its casting technique |
| CN107052265A (en) * | 2017-06-12 | 2017-08-18 | 南通华东油压科技有限公司 | A kind of valve body of monoblock type three and its casting technique |
| CN107081408A (en) * | 2017-06-12 | 2017-08-22 | 南通华东油压科技有限公司 | A kind of monoblock type valve body moulding and its technique |
| CN109175258A (en) * | 2018-09-13 | 2019-01-11 | 南通华东油压科技有限公司 | A kind of manufacturing method of novel directional control valve casting |
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Application publication date: 20151028 |
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| RJ01 | Rejection of invention patent application after publication |