CN101875092A - Cast production technology for shell - Google Patents
Cast production technology for shell Download PDFInfo
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- CN101875092A CN101875092A CN2010102277542A CN201010227754A CN101875092A CN 101875092 A CN101875092 A CN 101875092A CN 2010102277542 A CN2010102277542 A CN 2010102277542A CN 201010227754 A CN201010227754 A CN 201010227754A CN 101875092 A CN101875092 A CN 101875092A
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Abstract
The invention discloses cast production technology for a shell. The technology sequentially comprises the steps of: manufacturing a mould, namely manufacturing an external metal mould, wherein the lower part of the external metal mould is provided with a molten iron inlet; manufacturing a sand mould, namely manufacturing a foaming mould, coating cast steel paint on the surface of the foaming mould, filling resin sands into the mould and hardening the sand mould by air blowing; setting a core, namely assembling the sand mould and the external metal mould, wherein a high temperature resistant material is coated on the core; pouring at the temperature of between 1,380 and 1,420 DEG C for 4 to 8 seconds and preserving the heat for 100 to 150 minutes, wherein a product yield reaches 50 to 70 percent; and performing subsequent operation, namely opening the mould to take the cast out, and cleaning and grinding the cast to obtain the required shell. The technology has the advantages of high sand mould quality, difficult cracking, good cooling effect and uniform internal density of the cast.
Description
Technical field
The present invention relates to a kind of production method of housing, relate in particular to a kind of casting production process of housing, specifically be applicable to the integral casting forming of metal shell.
Background technology
Housing mainly refers to the shell of pump or valve, as shell of gear pump, stop valve etc.Housing generally comprises into a single integrated structure bottom, inner casing and enclosing cover; since the erosion that the function of housing mainly is the parts in the containment vessel is not subjected to external environment condition with influence; therefore housing is had the stronger toughness and intensity except requiring, also must have certain corrosion resistance.This has all proposed higher requirement to the manufacture method of housing.
The Chinese patent Granted publication number is CN100587252C, Granted publication day is that the patent of invention on February 3rd, 2010 discloses a kind of fluid pump and casting method thereof, this fluid pump comprises a plunger, it can move, so that the fluid that is drawn into from import the discharge chambe is carried out supercharging, plunger) can in cylinder, roughly move axially, the fluid that is pressurized in the discharge chambe is discharged by outlet, limit a fluid passage between import and the outlet, magnetic valve is communicated with and blocks this fluid passage with the fluid of control from the outlet discharge, magnetic valve supports support magnetic valve, import, the outlet and the magnetic valve support member at least one by iron material by monoblock cast and cylinder monolithic molding.Though this invention can the more parts of monoblock cast, improve process velocity, its forging type is more coarse, and sand-mould quality is relatively poor, cause molten iron to overflow when cast easily, and cooling effect is relatively poor, and the foundry goods internal density is inhomogeneous.
Summary of the invention
The objective of the invention is to overcome the sand-mould quality that exists in the prior art have poor, cooling effect is relatively poor, the uneven defective of foundry goods internal density and problem, provide a kind of sand-mould quality better, the casting production process of strong, the uniform housing of foundry goods internal density of cooling effect.
For realizing above purpose, technical solution of the present invention is: a kind of casting production process of housing, this production technology comprise that successively Mold Making, sand mold are made, core operation, pouring operation and subsequent operation down;
Described Mold Making is meant: make metal outer mold according to housing earlier, be provided with the molten iron introducing port in the bottom of metal outer mold then;
Described sand mold is made and is meant: make foam type earlier in the sand mold mold box, smear steel moulder's paint on the surface of foam type again, potting resin sand is provided with gas hole simultaneously then, by the air blowing hardening sand mold;
The operation of described core down is meant: with the sand mold and the metal outer mold assembling of sclerosis, the main running channel in the sand mold communicates with the molten iron introducing port of metal outer mold, and is coated with exotic material on the core;
Described pouring operation is meant: the molten iron of fusing is injected die cavity, and pouring temperature is 1380-1420 ℃, and be 4-8 second the duration of pouring, and be incubated operation after cast, and temperature retention time is 100-150 minute, and the product recovery rate is 50%-70%;
Described subsequent operation is meant: open mould earlier and take out foundry goods, then the outer surface of foundry goods is cleared up, polish after the cleaning, can obtain required housing after the polishing.
Described pouring temperature is 1390 ℃, and be 4-6 second the duration of pouring, and temperature retention time is 120 minutes, and the product recovery rate is 65%.
The density of described foam type is 18kg/m
3, the former Grains number of resin sand is 40 orders.
Described exotic material is a boron modified phenolic resin.
Compared with prior art, beneficial effect of the present invention is:
1, owing to the making of the sand mold in the casting production process of a kind of housing of the present invention is meant: in the sand mold mold box, make foam type earlier, smear steel moulder's paint on the surface of foam type again, potting resin sand then, gas hole is set simultaneously, and by the air blowing hardening sand mold, the mode of this kind hardening sand mold can be guaranteed sand mold inner vein exquisiteness, toughness is better, be difficult for during cast breaking, in addition, the density of foam type is 18kg/m
3, the former Grains number of resin sand is the mechanical performance that 40 purposes designs can further strengthen sand mold, improves its shrinkage.Therefore sand-mould quality is better among the present invention, helps improving casting quality.
2, because the pouring operation in the casting production process of a kind of housing of the present invention emphasizes that pouring temperature is 1380-1420 ℃, be 4-8 second the duration of pouring, temperature retention time is 100-150 minute, the product recovery rate is 50%-70%, this kind design not only can guarantee the even cast of molten iron, and help the at the uniform velocity cooling of foundry goods, cooling effect is better, thereby guarantee that the foundry goods internal density is even, in addition, the exotic material of smearing on the core can reduce the impact of molten iron to core, thereby effectively avoids core to break or be out of shape, and has guaranteed the casting quality of foundry goods.Therefore cooling effect of the present invention is strong, the foundry goods internal density is even.
The specific embodiment
The present invention is further detailed explanation below in conjunction with the specific embodiment
A kind of casting production process of housing, this production technology comprise that successively Mold Making, sand mold are made, core operation, pouring operation and subsequent operation down;
Wherein, Mold Making is meant: make metal outer mold according to housing earlier, be provided with the molten iron introducing port in the bottom of metal outer mold then; Sand mold is made and is meant: make foam type earlier in the sand mold mold box, smear steel moulder's paint on the surface of foam type again, potting resin sand is provided with gas hole simultaneously then, by the air blowing hardening sand mold; Following core operation is meant: with the sand mold and the metal outer mold assembling of sclerosis, the main running channel in the sand mold communicates with the molten iron introducing port of metal outer mold, and is coated with exotic material on the core; The density of preferred foams type is 18kg/m
3, the former Grains number of resin sand is 40 orders; Preferred exotic material is a boron modified phenolic resin;
Special feature is that pouring operation is meant: the molten iron of fusing is injected die cavity, and pouring temperature is 1380-1420 ℃, and be 4-8 second the duration of pouring, and be incubated operation after cast, and temperature retention time is 100-150 minute, and the product recovery rate is 50%-70%; Preferred notes temperature is 1390 ℃, and be 4-6 second the duration of pouring, and temperature retention time is 120 minutes, and the product recovery rate is 65%.
Preferred subsequent operation is meant: open mould earlier and take out foundry goods, then the outer surface of foundry goods is cleared up, polish after the cleaning, can obtain required housing after the polishing.
Embodiment 1:
A kind of casting production process of housing, this production technology comprise that successively Mold Making, sand mold are made, core operation, pouring operation and subsequent operation down;
Described Mold Making is meant: make metal outer mold according to housing earlier, be provided with the molten iron introducing port in the bottom of metal outer mold then;
Described sand mold is made and is meant: make foam type earlier in the sand mold mold box, the density of foam type is 18kg/m
3, smear steel moulder's paint on the surface of foam type again, potting resin sand then, the former Grains number of resin sand is 40 orders, is provided with simultaneously and blows gas hole, by the air blowing hardening sand mold;
The operation of described core down is meant: with the sand mold and the metal outer mold assembling of sclerosis, the main running channel in the sand mold communicates with the molten iron introducing port of metal outer mold, and is coated with the exotic material boron modified phenolic resin on the core;
Described pouring operation is meant: the molten iron of fusing is injected die cavity, and pouring temperature is 1390 ℃, and be 5 seconds the duration of pouring, and be incubated operation after cast, and temperature retention time is 120 minutes, and the product recovery rate is 65%;
Described subsequent operation is meant: open mould earlier and take out foundry goods, then the outer surface of foundry goods is cleared up, polish after the cleaning, can obtain required housing after the polishing.
Therefore, the present invention not only sand-mould quality better, be difficult for breaking, and cooling effect is strong, the foundry goods internal density is even.
The above only is a better embodiment of the present invention; protection scope of the present invention is not exceeded with above-mentioned embodiment; as long as the equivalence that those of ordinary skills do according to disclosed content is modified or changed, all should include in the protection domain of putting down in writing in claims.
Claims (4)
1. the casting production process of a housing, this production technology comprise that successively Mold Making, sand mold are made, core operation, pouring operation and subsequent operation down, it is characterized in that:
Described Mold Making is meant: make metal outer mold according to housing earlier, be provided with the molten iron introducing port in the bottom of metal outer mold then;
Described sand mold is made and is meant: make foam type earlier in the sand mold mold box, smear steel moulder's paint on the surface of foam type again, potting resin sand is provided with gas hole simultaneously then, by the air blowing hardening sand mold;
The operation of described core down is meant: with the sand mold and the metal outer mold assembling of sclerosis, the main running channel in the sand mold communicates with the molten iron introducing port of metal outer mold, and is coated with exotic material on the core;
Described pouring operation is meant: the molten iron of fusing is injected die cavity, and pouring temperature is 1380-1420 ℃, and be 4-8 second the duration of pouring, and be incubated operation after cast, and temperature retention time is 100-150 minute, and the product recovery rate is 50%-70%;
Described subsequent operation is meant: open mould earlier and take out foundry goods, then the outer surface of foundry goods is cleared up, polish after the cleaning, can obtain required housing after the polishing.
2. the casting production process of a kind of housing according to claim 1, it is characterized in that: described pouring temperature is 1390 ℃, and be 4-6 second the duration of pouring, and temperature retention time is 120 minutes, and the product recovery rate is 65%.
3. the casting production process of a kind of housing according to claim 1 and 2, it is characterized in that: the density of described foam type is 18kg/m
3, the former Grains number of resin sand is 40 orders.
4. the casting production process of a kind of housing according to claim 1 and 2, it is characterized in that: described exotic material is a boron modified phenolic resin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102277542A CN101875092A (en) | 2010-07-16 | 2010-07-16 | Cast production technology for shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102277542A CN101875092A (en) | 2010-07-16 | 2010-07-16 | Cast production technology for shell |
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| Publication Number | Publication Date |
|---|---|
| CN101875092A true CN101875092A (en) | 2010-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010102277542A Pending CN101875092A (en) | 2010-07-16 | 2010-07-16 | Cast production technology for shell |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102658353A (en) * | 2012-05-22 | 2012-09-12 | 赵一平 | Forming die for casting die of motor shell and method using forming die to form casting die |
| CN104907772A (en) * | 2015-06-01 | 2015-09-16 | 含山县恒翔机械制造有限公司 | Method for manufacturing cap surface of small-sized SUV (sports utility vehicle) fuel tank cap |
| CN104907493A (en) * | 2015-06-01 | 2015-09-16 | 含山县恒翔机械制造有限公司 | Preparation method of mini-car wheel hub outer cover |
| CN104941548A (en) * | 2015-05-27 | 2015-09-30 | 含山县宏记精工铸造厂 | Mixing reaction bucket of chemical reagents |
| CN105081277A (en) * | 2015-04-28 | 2015-11-25 | 海门市沪海有色铸造有限公司 | Low-pressure casting process of metal aluminium ring |
| CN105750506A (en) * | 2016-05-16 | 2016-07-13 | 江苏力源金河铸造有限公司 | Pump body shell casting system |
| CN109382485A (en) * | 2018-11-19 | 2019-02-26 | 吉林省众慧广博科技有限公司 | A kind of casting technique improving automobile-used disk like members casting accuracy |
| CN112496266A (en) * | 2020-11-04 | 2021-03-16 | 宁波茸发新材料科技有限公司 | Method for eliminating cracks of thin-wall cylinder castings |
-
2010
- 2010-07-16 CN CN2010102277542A patent/CN101875092A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102658353A (en) * | 2012-05-22 | 2012-09-12 | 赵一平 | Forming die for casting die of motor shell and method using forming die to form casting die |
| CN105081277A (en) * | 2015-04-28 | 2015-11-25 | 海门市沪海有色铸造有限公司 | Low-pressure casting process of metal aluminium ring |
| CN105081277B (en) * | 2015-04-28 | 2018-04-24 | 海门市沪海有色铸造有限公司 | A kind of metal aluminium ring low-pressure casting process |
| CN104941548A (en) * | 2015-05-27 | 2015-09-30 | 含山县宏记精工铸造厂 | Mixing reaction bucket of chemical reagents |
| CN104907772A (en) * | 2015-06-01 | 2015-09-16 | 含山县恒翔机械制造有限公司 | Method for manufacturing cap surface of small-sized SUV (sports utility vehicle) fuel tank cap |
| CN104907493A (en) * | 2015-06-01 | 2015-09-16 | 含山县恒翔机械制造有限公司 | Preparation method of mini-car wheel hub outer cover |
| CN105750506A (en) * | 2016-05-16 | 2016-07-13 | 江苏力源金河铸造有限公司 | Pump body shell casting system |
| CN105750506B (en) * | 2016-05-16 | 2018-02-23 | 江苏力源金河铸造有限公司 | A kind of pump housing shell running gate system |
| CN109382485A (en) * | 2018-11-19 | 2019-02-26 | 吉林省众慧广博科技有限公司 | A kind of casting technique improving automobile-used disk like members casting accuracy |
| CN112496266A (en) * | 2020-11-04 | 2021-03-16 | 宁波茸发新材料科技有限公司 | Method for eliminating cracks of thin-wall cylinder castings |
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Open date: 20101103 |