CN101602089A - A kind of sand mold rotary gravity mould and casting method thereof - Google Patents
A kind of sand mold rotary gravity mould and casting method thereof Download PDFInfo
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- CN101602089A CN101602089A CNA2009100631192A CN200910063119A CN101602089A CN 101602089 A CN101602089 A CN 101602089A CN A2009100631192 A CNA2009100631192 A CN A2009100631192A CN 200910063119 A CN200910063119 A CN 200910063119A CN 101602089 A CN101602089 A CN 101602089A
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Abstract
The present invention relates to a kind of sand mold rotary gravity mould and casting method thereof, mould comprises internal structure core and exterior sand mold gravity mould, and exterior sand mold gravity mould is made by resin, curing agent and roughing sand.Casting method may further comprise the steps: (one) installs core mold on the core machine: internal structure core and exterior sand mold gravity mould; (2) mulling: resin, curing agent and roughing sand; (3) mould is heated: the structure size according to core and sand mold is heated to proper curing temperature, and coremaking and system type also scrape off redundance on the core; (4) the internal structure core is put into exterior sand mold gravity mould by positioning head, rotate casting by front casting or side casting mode behind the matched moulds; (5) foundry goods after casting finishes takes out from exterior sand mold gravity mould, gets the foundry goods time surely according to casting pressing port with than the situation of solidifying of thickness portion; (6) foundry goods carries out the ramming bead.The inventive method can be improved the defective of conventional cast method, and consumptive material is few, and cost is lower.
Description
Technical field
The present invention relates to a kind of sand mold rotary gravity mould and casting method thereof, belong to casting technology field.
Background technology
In the bathroom faucet industry, there are three kinds of foundry engieerings to produce the tap foundry goods at present, are respectively gravitational casting, low pressure casting and clay-bonded sand die cast.And all there is in various degree defective (many as consumptive material, cost is high) in these three kinds of foundry engieerings.
Gravitational casting and low pressure casting: 1, the profile mould all is by metal material be made (material commonly used: A3 steel, No. 45 steel, red copper, beryllium copper etc.), and metal pattern is unfavorable for exhaust when casting, make foundry goods produce more pore, improve the problem of pore, can improve the designer and the producer's difficulty greatly.More crucial is that the metal die heat conductivility is strong, when alloyed copper liquid injects the metal pattern running channel, carries out heat transmission rapidly, and the alloy liquid temp is significantly descended.Therefore alloy liquid is mobile slack-off, in order to make complete product, and stamp more smoothly, with the foundry engieering of present bathroom industry, the wall thickness of product is at 3-3.8mm.This technical costs is higher, consumption of raw material many (because product is copper material).2, metal die is when ordinary production, and the mould temperature will reach more than 185 degree, has strengthened operator's work difficulty, has destroyed working environment (scalding easily).3, whenever water and cast out a foundry goods, must clear up a mould, (this flow process is not only loaded down with trivial details will once to steep mould simultaneously, what is more important, the graphite pigment dirt of using during the bubble mould is very big, make whole foundry and even whole plant environment be subjected to great destruction and pollution, quite unfavorable to workman's physical and mental health).
The clay-bonded sand die cast: 1, outer mould is suppressed on loam moulding sand by middle template die and is formed, and during casting, under the molten metal thermal shock, the outer mould locating slot has bigger deformability, can cause that the internal structure core moves, and causes the casting section thickness inequality.Usually has only the integrality (too thin wall thickness is easy to Durchgangshohle, because the mobile die cavity of running into outer mould of internal cores) that guarantees foundry goods by the wall thickness of thickening foundry goods.2,, be not easy to unified frock clamp and process because the foundry goods external form is not exclusively unified, and roughness is big.3, surface roughness is big, has strengthened the sanding and polishing surplus, the easy sanding and polishing distortion of product, and man power and material's cost of sanding and polishing improves, and efficient is low.4, clay will contain the moisture content about 8% when moulding, has reduced the flowability of alloyed copper when casting.5, clay-bonded sand die cast occupied ground is big, and production efficiency is low, and dust is big.
In view of above all deficiencies, it is huge that the bathroom faucet industry consumes the alloyed copper quantity of material again, and the alloyed copper material accounts for business capital 80%.How now all be faced with a common problem in the industry " reduces cost, how can get thinner to castings production ".
Patent CN200610030613.5 " metal gravity casting die of tin bronze casting and casting method " is the casting method at tin bronze material cast member.But this patent flow process in operation is loaded down with trivial details, because it needs the combination of metal outer mould and core outer mould and core, just can cast behind the matched moulds.Secondly, metal outer mould temperature at work has more than 100 degree, and the operating personnel easily scalds, and processing safety is lower.And water road junction, overflow launder and rising head on the casting mould be opened on the metal outer mould, when solution-cast when metal waters the road junction, metal waters the road junction can carry out heat transmission rapidly, so reduced the temperature of solution, influences the flowability of solution.Mobile poor, foundry goods just is difficult to do thin; The difficult stamp of mobile slack-off back foundry goods of solution easily produces defectives such as cold shut, pore, slag inclusion.
Summary of the invention
The object of the present invention is to provide a kind of sand mold rotary gravity mould and casting method thereof, can improve above casting flaw greatly, and consumptive material is few, cost is lower.
Technical scheme of the present invention is: a kind of sand mold rotary gravity mould, comprise the internal structure core, it is characterized in that: also comprise exterior sand mold gravity mould, it is made by resin, curing agent and roughing sand, three's part by weight is 2～6: 0.3～0.9: 100, and the locating slot of exterior sand mold gravity mould inner chamber is corresponding with the positioning head of internal structure core.
Aforesaid sand mold rotary gravity mould is characterized in that: roughing sand wherein be by 70 orders-100 purpose roughing sand and 150 orders-200 purpose roughing sand by 1: 1～3 or 2～3: 1 weight proportion obtains.
A kind of sand mold rotary gravity casting method is characterized in that: may further comprise the steps:
(1) on the core machine, installs core mold: internal structure core and exterior sand mold gravity mould, exterior sand mold gravity mould is made by resin, curing agent and roughing sand, adjust parameter simultaneously, blast time, blast pressure and hardening time are adjusted parameter according to the structure size of core and sand mold;
(2) mulling: resin, curing agent and roughing sand, three's part by weight is 2～6: 0.3～0.9: 100, roughing sand be by 70 orders-100 purpose roughing sand and 150 orders-200 purpose roughing sand by 1: 1～3 or 2～3: 1 weight proportion obtains, and disposes the amount of resin and curing agent according to the structure size of core and sand mold;
(3) mould is heated: the structure size according to core and sand mold is heated to proper curing temperature, and temperature is controlled at 220 degree-320 degree, and coremaking and system type also scrape off part unnecessary on the core;
(4) the internal structure core is put into exterior sand mold gravity mould by positioning head, rotate casting by front casting or side casting mode behind the matched moulds, the alloyed copper cast temperature is at 1030 degree ± 10 degree;
(5) foundry goods after casting finishes takes out from exterior sand mold gravity mould after 15 seconds-35 seconds, gets the foundry goods time surely according to casting pressing port with than the solidifying situation of thickness portion;
(6) foundry goods carries out the ramming bead.
The invention has the beneficial effects as follows:
(1) exterior sand mold gravity mould does not have bigger thermal conductivity, because exterior sand mold gravity mould is to be made by resin, curing agent and roughing sand, the heat of alloyed copper liquid in casting cycle (comprising other metal material liquation) just can not run off rapidly, thereby can drop to 2mm-2.2mm to casting section thickness, also stamp fully smoothly.
(2) exterior sand mold gravity mould is not a metal material, and better exhaust does not have the phenomenon of feeling suffocated.
(3) because of exterior sand mold gravity mould is not a metal material, so can not cause the position generation defective that localized hyperthermia brought of watering road junction or the long-time process of alloyed copper liquid by mould.(locate in localized hyperthermia because of the external form mould, foundry goods can produce pore or polishing has defectives such as slag inclusion)
(4) the core positioning head at each position does not have deformability on exterior sand mold gravity mould, so the internal structure core can not move, casting section thickness is even, and surface roughness are little, is convenient to processing and polishing.
(5) exterior sand mold gravity mould self drying, and contain the sand mold gravity mould heat conductivility strong (heat conductivility more strong, more influence mobile) of the clay sand mo(u)ld of moisture 8% than drying.
(6) can control the quality of each foundry goods during sand mold rotary gravity Foundry Production, can stop the production of next mould immediately, be convenient to improve immediately operating procedure, can not cause bad product in batches by unusual generation.
(7) the sand mold rotary gravity is cast in the rotation and casts, and can more reasonably allow alloy liquid order stamp and consecutive solidification.
(8) casting of sand mold rotary gravity needn't be steeped a schungite water by every casting one mould, clears up one time mold cavity, has simplified working procedure, does not have graphite dust to improve working environment, and sand mold gravitational casting mould does not have high temperature, handling safety simultaneously.
Sand mold rotary gravity of the present invention casting combines the advantage that metal die casting and clay-bonded sand die cast etc. are cast, and more crucial is to have overcome the defective of present casting and the expensive problem of institute's consumable material, for enterprise with country provides cost savings and resource problem.The product of original 3mm or higher thickness done being as thin as 2mm, the cost of whole copper material has been reduced by 1/3.As: concerning month consumption copper material amount is 200 tons producer, if adopt technology of the present invention, every month 2,000,000 (the calculating) that can reduce cost with present market copper material price.
Description of drawings
Fig. 1 is a conventional metals Gravity Mode planar structure schematic diagram.
Fig. 2 is a conventional metals Gravity Mode perspective exploded view.
Fig. 3 is an embodiment of the invention sand mold gravity mould planar structure schematic diagram.
Fig. 4 is an embodiment of the invention sand mold gravity mould perspective exploded view.
The specific embodiment
The present invention is described further below in conjunction with drawings and Examples.
The explanation of mark among Fig. 1: a 1-metal gravity mould left side, the 2-metal gravity mould right side, 3-internal structure core.
The explanation of mark among Fig. 3: 4-sand mold gravity mould patrix, 5-sand mold gravity mould counterdie, 6-waters the road junction, 7-locating slot, 8-positioning head.
As shown in Figure 3 and Figure 4, embodiment of the invention sand mold rotary gravity mould comprises internal structure core 3 and exterior sand mold gravity mould, and exterior sand mold gravity mould comprises sand mold gravity mould patrix 4 and counterdie 5 again, and they are made by resin, curing agent and roughing sand; The locating slot 7 of exterior sand mold gravity mould inner chamber is corresponding with the positioning head 8 of internal structure core.
Embodiment of the invention sand mold rotary gravity casting method flow process is as follows:
(1) on the core machine, installs core mold: internal structure core 3 and exterior sand mold gravity mould 4,5, sand mold gravity mould 4,5 is made by resin, curing agent and roughing sand, adjust parameter simultaneously, blast time, blast pressure and hardening time are adjusted parameter according to the structure size of core and sand mold.
(2) mulling: resin, curing agent and roughing sand, mulling: resin, curing agent and roughing sand, three's part by weight is 2～6: 0.3～0.9: 100, roughing sand be by 70 orders-100 purpose roughing sand and 150 orders-200 purpose roughing sand by 1: 1～3 or 2～3: 1 weight proportion obtains, and disposes the amount of resin and curing agent according to the structure size of core and sand mold; Wherein the different meetings of the kind of resin influence the additions of curing agent.
(3) mould is heated: the structure size according to core and sand mold is heated to proper curing temperature, and temperature is controlled at the 220-320 degree, and coremaking and system type also scrape off part unnecessary on the core.
(4) internal structure core 3 is put into sand mold gravity mould 4,5 by positioning head 8, rotate casting by front casting or side casting mode behind the matched moulds, the alloyed copper cast temperature is at 1030 degree ± 10 degree.Alloy liquid is cast in the sand mold gravity mould die cavity by watering road junction 6 (shown in Figure 3).
(5) foundry goods after casting finishes takes out (getting surely the foundry goods time according to casting pressing port with than the solidifying situation of thickness portion) from sand mold gravity mould 4,5 after 15 seconds-35 seconds.
(6) foundry goods carries out the ramming bead.
Embodiment 1:(two) roughing sand is that 70 orders-100 purpose roughing sand and 150 orders-200 purpose roughing sand obtain by 1: 1 proportioning in the mulling process; Good roughing sand 100kg is an example with proportioning, and resin is 3kg, and curing agent is 0.4kg.(3) during mould was heated: the structure size according to core and sand mold was heated to proper curing temperature, and temperature is controlled at 220 degree; (4) the alloyed copper cast temperature is at 1020 degree; (5) foundry goods after casting finishes took out from sand mold gravity mould 4,5 after 15 seconds.
Embodiment 2:(two) roughing sand is that 70 orders-100 purpose roughing sand and 150 orders-200 purpose roughing sand obtain by 2: 1 proportionings in the mulling process; Good roughing sand 100kg is an example with proportioning, and resin is 2kg, and curing agent is 0.3kg.(3) during mould was heated: the structure size according to core and sand mold was heated to proper curing temperature, and temperature is controlled at 300 degree; (4) the alloyed copper cast temperature is at 1040 degree; (5) foundry goods after casting finishes took out from sand mold gravity mould 4,5 after 35 seconds.
Embodiment 3:(two) roughing sand is that 70 orders-100 purpose roughing sand and 150 orders-200 purpose roughing sand obtain by 3: 1 proportionings in the mulling process; Good roughing sand 100kg is an example with proportioning, and resin is 6kg, and curing agent is 0.9kg.(3) during mould was heated: the structure size according to core and sand mold was heated to proper curing temperature, and temperature is controlled at 320 degree; (4) the alloyed copper cast temperature is at 1030 degree; (5) foundry goods after casting finishes took out from sand mold gravity mould 4,5 after 25 seconds.
Conventional metals mould gravitational casting flow process is as follows: as depicted in figs. 1 and 2,
(1) on the core machine, installs internal structure core 3, adjust parameter (blast time and blast pressure and hardening time are adjusted parameter according to the structure size of core and sand mold) simultaneously.
(2) mulling: resin, curing agent and roughing sand (70 orders-100 order), dispose the amount of resin and curing agent according to the structure size of core and sand mold.
(3) mould is heated (structure size according to core is heated to proper curing temperature, and general temperature is controlled at about 280 degree), and coremaking also scrapes off part unnecessary on the core.
(4) metal gravity mould 1,2 carries out preheating (being warmed to 185 degree-200 degree).
(5) cleaning metal gravity mould inside die cavity.
(6) bubble mould ( metal gravity mould 1,2 is put into and contained for 30% graphite water 1-2 second).
(7) put into metal gravity mould 1,2 by positioning head for internal structure core 3, behind the matched moulds, rotate casting by front casting or side casting mode.
(8) foundry goods is taken out in die sinking behind the casting solidification.
(9) cleaning metal gravity mould inside die cavity.
(10) bubble mould.
(11) foundry goods carries out the ramming bead.
Conventional clay sand casting flow process is as follows:
(1) on the core machine, installs internal structure core 3, adjust parameter (blast time and blast pressure and hardening time are adjusted parameter according to the structure size of core and sand mold) simultaneously.
(2) mould is heated (structure size according to core is heated to proper curing temperature), and coremaking also scrapes off part unnecessary on the core.
(3) sand cutting (water of adding about 8% in clay).
(4) board mold and clay compacting moulding in the usefulness is put into internal structure core 3, matched moulds by the core positioning head simultaneously.
(5) unify after moulding finishes, the unified casting (the clay sand mo(u)ld is face flatwise, does not do any moving during casting), treat casting solidification after, unified broken case takes out foundry goods.
(6) foundry goods carries out the ramming bead.
Conventional metals mould low pressure casting flow process is as follows:
(1) on the core machine, installs internal structure core 3, adjust parameter (blast time and blast pressure and hardening time are adjusted parameter according to the structure size of core and sand mold) simultaneously.
(2) resin, curing agent and roughing sand (70 orders-100 order) dispose the amount of resin and curing agent according to the structure size of core and sand mold.
(3) mould is heated (structure size according to core is heated to proper curing temperature), and coremaking also scrapes off part unnecessary on the core.
(4) metal gravity mould 1,2 carries out preheating (being warmed to 185 degree-200 degree).
(5) cleaning metal gravity mould inside die cavity.
(6) bubble mould ( metal gravity mould 1,2 is put into and contained for 30% graphite water 1-2 second).
(7) put into external form metal gravity mould 1,2 by positioning head for internal structure core 3, behind the matched moulds, put into the air injection machine arm, inject alloyed copper in metal die by the air injection machine depended on pressure.
(8) foundry goods is taken out in die sinking behind the casting solidification.
(9) cleaning metal die die cavity.
(10) bubble mould.
(11) foundry goods carries out the ramming bead.
Claims (3)
1, a kind of sand mold rotary gravity mould, comprise the internal structure core, it is characterized in that: also comprise exterior sand mold gravity mould, it is made by resin, curing agent and roughing sand, three's part by weight is 2～6: 0.3～0.9: 100, and the locating slot of exterior sand mold gravity mould inner chamber is corresponding with the positioning head of internal structure core.
2, sand mold rotary gravity mould as claimed in claim 1 is characterized in that: roughing sand wherein be by 70 orders-100 purpose roughing sand and 150 orders-200 purpose roughing sand by 1: 1～3 or 2～3: 1 weight proportion obtains.
3, a kind of sand mold rotary gravity casting method is characterized in that: may further comprise the steps:
(1) on the core machine, installs core mold: internal structure core and exterior sand mold gravity mould, exterior sand mold gravity mould is made by resin and roughing sand, adjust parameter simultaneously, blast time, blast pressure and hardening time are adjusted parameter according to the structure size of core and sand mold.
(2) mulling: resin, curing agent and roughing sand, roughing sand be by 70 orders-100 purpose roughing sand and 150 orders-200 purpose roughing sand by 1: 1～3 or 2～3: 1 weight proportion obtains, and disposes the amount of resin and additive according to the structure size of core and sand mold;
(3) mould is heated: the structure size according to core and sand mold is heated to proper curing temperature, and temperature is controlled at 220 degree-320 degree, and coremaking and system type also scrape off part unnecessary on the core;
(4) the internal structure core is put into exterior sand mold gravity mould by positioning head, rotate casting by front casting or side casting mode behind the matched moulds, the alloyed copper cast temperature is at 1030 degree ± 10 degree;
(5) foundry goods after casting finishes takes out from exterior sand mold gravity mould after 15 seconds-35 seconds, gets the foundry goods time surely according to casting pressing port with than the solidifying situation of thickness portion;
(6) foundry goods carries out the ramming bead.
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| CN2009100631192A CN101602089B (en) | 2009-07-10 | 2009-07-10 | Sand mold rotary gravity mould and casting method thereof |
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| CN2009100631192A CN101602089B (en) | 2009-07-10 | 2009-07-10 | Sand mold rotary gravity mould and casting method thereof |
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| CN101602089A true CN101602089A (en) | 2009-12-16 |
| CN101602089B CN101602089B (en) | 2011-11-30 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179475A (en) * | 2011-05-13 | 2011-09-14 | 中宇建材集团有限公司 | Novel gravity casting pouring device suitable for lead-free brass |
| CN104741526A (en) * | 2015-03-28 | 2015-07-01 | 广西玉柴机器股份有限公司 | Extra-large outer appearance sand mold and production process method |
| CN106151674A (en) * | 2015-04-03 | 2016-11-23 | 邝华景 | The environmental protection bathroom faucet of a kind of embedding pipe casing and processing method |
| CN108015227A (en) * | 2017-12-15 | 2018-05-11 | 台州市陈氏铜业有限公司 | Copper alloy casting process |
| CN108393472A (en) * | 2018-03-05 | 2018-08-14 | 安徽传质信息科技有限公司 | A kind of founding equipment that can be manually operated |
| CN114210925A (en) * | 2021-12-13 | 2022-03-22 | 湖南鑫泉科技有限公司 | Metal mold gravity casting method |
-
2009
- 2009-07-10 CN CN2009100631192A patent/CN101602089B/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102179475A (en) * | 2011-05-13 | 2011-09-14 | 中宇建材集团有限公司 | Novel gravity casting pouring device suitable for lead-free brass |
| CN102179475B (en) * | 2011-05-13 | 2013-12-04 | 中宇建材集团有限公司 | Novel gravity casting pouring device suitable for lead-free brass |
| CN104741526A (en) * | 2015-03-28 | 2015-07-01 | 广西玉柴机器股份有限公司 | Extra-large outer appearance sand mold and production process method |
| CN104741526B (en) * | 2015-03-28 | 2017-05-10 | 广西玉柴机器股份有限公司 | Extra-large outer appearance sand mold and production process method |
| CN106151674A (en) * | 2015-04-03 | 2016-11-23 | 邝华景 | The environmental protection bathroom faucet of a kind of embedding pipe casing and processing method |
| CN108015227A (en) * | 2017-12-15 | 2018-05-11 | 台州市陈氏铜业有限公司 | Copper alloy casting process |
| CN108393472A (en) * | 2018-03-05 | 2018-08-14 | 安徽传质信息科技有限公司 | A kind of founding equipment that can be manually operated |
| CN114210925A (en) * | 2021-12-13 | 2022-03-22 | 湖南鑫泉科技有限公司 | Metal mold gravity casting method |
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| CN101602089B (en) | 2011-11-30 |
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