CN104785730A - Actuator box body casting process - Google Patents
Actuator box body casting process Download PDFInfo
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- CN104785730A CN104785730A CN201510235298.9A CN201510235298A CN104785730A CN 104785730 A CN104785730 A CN 104785730A CN 201510235298 A CN201510235298 A CN 201510235298A CN 104785730 A CN104785730 A CN 104785730A
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- sand
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- casing
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Abstract
The invention relates to an actuator box body casting process, which comprises the following steps: making a metal mold plate entering an actuator box body with metal, heating the metal mold plate to 180-280 C degree, coating molding sand on the metal mold plate, curing the molding sand, heating and curing the molding sand form a shell mold, wherein a pouring opening is formed in the central part of the shell mold, an overflow pipe and exhaust pins communicated with the cavity is arranged on the shell mold; forming three sets of actuator box body sand cores through chromite sand, combining the sand cores to form a sand core main body and horizontally arranging the sand core main body in a lower shell; making a sand box with sand, wherein upper and lower shells are embedded into the sand box, a sand layer is coated on the cavities among the inner side of the sand box and the outer surfaces of the upper and lower shells, and a pouring and rising system communicated with the shell mold is arranged in the sand layer; pouring towards the cavity through the pouring and rising system to form the actuator box body. The actuator box body casting process has the advantage that the exhaust is fast and the work efficiency is high.
Description
Technical field
The present invention relates to casting field, particularly a kind of actuator casing casting technique.
Background technology
In Process Control System, actuator is made up of executing agency and governor motion two parts.Governor motion directly changes the parameter of production process by executive component, makes production process meet predetermined requirement.The control information that executing agency then accepts self-controller is converted to it the output (as angular displacement or straight-line displacement export) driving governor motion.It also adopts suitable executive component, but requires different from governor motion.Actuator is directly installed on production scene, and condition of work is harsh sometimes.Normal work can be kept directly to affect the safety and reliability of automatic regulating system.
Actuator casing is then the inner member installing actuator.When casting actuator casing, existing technology also exists several shortcoming: the molten iron temperature be introduced in die cavity is low, and of poor quality, therefore can impact the quality of product; A mould can only produce a product, and production efficiency is low; Exhaust velocity is slow, easily produces the phenomenon of Shrinkage cavity.
Summary of the invention
The actuator casing casting technique that the technical problem to be solved in the present invention is to provide a kind of good product quality, exhaust velocity is fast, production efficiency is high.
For solving the problems of the technologies described above, technical scheme of the present invention is: a kind of actuator casing casting technique, and its innovative point is: described step is:
A) first, make into the metal form needed for actuator casing with metal;
B) 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;
C) then, again heating cure is carried out to molding sand and form shell mould, shell mould is made up of upper and lower casing, two actuator casing die cavities are formed after upper and lower casing matched moulds, in the centre of upper shell, there is a casting gate, and two actuator casing die cavities are symmetrically distributed in the two ends of casting gate, and upper shell also has the overflow pipe be connected with die cavity and exhaust needle;
D) then, the core of three groups of actuator casings is being formed by chromite sand, be respectively the first core, the second core and the 3rd core, and form core main body by after these three groups of core combinations, and core main body is horizontally set in lower house, then will form the die cavity of actuator casing after upper and lower casing and core main body matched moulds;
E) then, a sandbox is manufactured by sand, described upper and lower casing embeds in sandbox, cavity between inside described upper and lower shell external 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 running channel that an appearance casting gate passes through and the rising head with shell mould quantity equity;
F) last, cast in die cavity by pouring and riser systems, final formation actuator casing.
Further, one deck barrier paper is coated with between described shell mould and layer of sand.
Further, in described steps d, when making second core and the 3rd core, mold a limited block at the end position of the second core and the 3rd core respectively, simultaneously in step c, upper and lower casing forms the cavity corresponding with limited block.
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.
Two actuator casing die cavities are symmetrically distributed in the two ends of casting gate, molten iron can be made like this can be distributed to uniformly when entering from casting gate in two die cavities, ensure the quality of casting, once can cast out two actuator casings by this mould, improve production efficiency.
By setting up the design of overflow pipe, because the molten iron temperature be introduced in die cavity is low, and of poor quality, the molten iron be introduced in die cavity can be discharged by overflow pipe, ensure the quality of product, and overflow pipe also can play certain scavenging action, reduce the generation of Shrinkage cavity.
By the setting of exhaust needle, can exhaust velocity be improved, reduce the generation of Shrinkage cavity as much as possible.
By the setting of limited block, when core is put into shell mould, fast core can be located, increase work efficiency.
By the setting of barrier paper, the sand when covering layer of sand can being stoped to fall in die cavity, affecting the qualification rate of product.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of shell mould in actuator casing casting technique of the present invention.
Fig. 2 is the upward view of shell mould in actuator casing casting technique of the present invention.
Fig. 3 is the schematic diagram of core in actuator casing casting technique of the present invention.
Fig. 4 is the upward view of core in actuator casing casting technique of the present invention.
Detailed description of the invention
Actuator casing in of the present invention is by being positioned at the output shaft installation end at center and being arranged at output shaft installation end two ends and the counter installation end, the motor link that distribute in vertical direction form jointly, there is a cross-shaped cavity in output shaft installation end, there is the horizontal cavity A that runs through its entirety in counter installation end, there is the horizontal cavity B that runs through its entirety in motor link, and horizontal cavity A and horizontal cavity B are connected with the two ends of cross-shaped cavity respectively.
Structure Figure illustrates and is described further actuator casing casting technique of the present invention below:
The first step, makes into the metal form needed for actuator casing of metal.
Second step, is being heated to 180 ~ 280 DEG C by metal form, then covers on metal form by the molding sand that heat is hardened, and molding sand is solidified.
3rd step, again heating cure is carried out to molding sand and form shell mould, schematic diagram is as shown in Figures 1 and 2 known, shell mould is made up of jointly upper shell 4, lower house 5, two actuator casing die cavities are formed after upper shell 4, lower house 5 matched moulds, there is in the centre of upper shell 4 casting gate 1, and two actuator casing die cavities are symmetrically distributed in the two ends of casting gate 1.In the present invention, two actuator casing die cavities being symmetrically distributed in the two ends of casting gate 1, molten iron can being made like this can be distributed to uniformly when entering from casting gate 1 in two die cavities, ensure the quality of casting.
Upper shell 4 also have the overflow pipe be connected with die cavity and exhaust needle, overflow pipe one has four, corresponding with the limited block of the end position of the second core 22, the 3rd core 24 respectively, wherein overflow pipe 2,10 is corresponding with the limited block of the second core 22 end, and overflow pipe 7,11 is corresponding with the limited block of the end position of the 3rd core 24; Exhaust needle one has six, and wherein exhaust needle 3,13 is corresponding with the position at the first core phase 23 places in two die cavities respectively, and exhaust needle 12,9,8,6 is distributed in the end of integral sand core.
4th step, the core of three groups of actuator casings is being formed by chromite sand, be respectively the first core 23, second core 22 and the 3rd core 24, and the first core 23, second core 22 and the 3rd core 24 are combined rear formation core main body, and core main body is horizontally set in lower house 4, then will form the die cavity of actuator casing after upper shell 4, lower house 5 and core main body matched moulds.
In above-mentioned 3rd step, the 4th step, when making second core 22 and the 3rd core 24, a limited block is molded respectively at the end position of the second core 22 and the 3rd core 24, on upper shell 4, lower house 5, form the cavity corresponding with limited block, limited block forms vertical between core link 20 with lower house positioning end 21 connection jointly by core link 20 and lower house positioning end 21 two parts simultaneously.
5th step, a sandbox is manufactured by sand, upper shell 4, lower house 5 are embedded in sandbox, cavity between inside upper shell 4, lower house 5 outer surface and sandbox is coated with layer of sand, at upper shell 4, between lower house 5 and layer of sand, be coated with one deck barrier paper, the sand when covering layer of sand can be stoped to fall in die cavity, affecting the qualification rate of product, in layer of sand, be provided with the pouring and riser systems be communicated with shell mould, pouring and riser systems comprises running channel that an appearance casting gate 1 passes through and the rising head with shell mould quantity equity.
6th step, is cast in die cavity by pouring and riser systems, final formation actuator casing.
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 actuator casing casting technique, is characterized in that: described step is:
A) first, make into the metal form needed for actuator casing with metal;
B) 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;
C) then, again heating cure is carried out to molding sand and form shell mould, shell mould is made up of upper and lower casing, two actuator casing die cavities are formed after upper and lower casing matched moulds, in the centre of upper shell, there is a casting gate, and two actuator casing die cavities are symmetrically distributed in the two ends of casting gate, and upper shell also has the overflow pipe be connected with die cavity and exhaust needle;
D) then, the core of three groups of actuator casings is being formed by chromite sand, be respectively the first core, the second core and the 3rd core, and form core main body by after these three groups of core combinations, and core main body is horizontally set in lower house, then will form the die cavity of actuator casing after upper and lower casing and core main body matched moulds;
E) then, a sandbox is manufactured by sand, described upper and lower casing embeds in sandbox, cavity between inside described upper and lower shell external 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 running channel that an appearance casting gate passes through and the rising head with shell mould quantity equity;
F) last, cast in die cavity by pouring and riser systems, final formation actuator casing.
2. actuator casing casting technique according to claim 1, is characterized in that: be coated with one deck barrier paper between described shell mould and layer of sand.
3. actuator casing casting technique according to claim 1, it is characterized in that: in described steps d, when making second core and the 3rd core, a limited block is molded respectively at the end position of the second core and the 3rd core, simultaneously in step c, upper and lower casing forms the cavity corresponding with limited block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510235298.9A CN104785730A (en) | 2015-05-11 | 2015-05-11 | Actuator box body casting process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510235298.9A CN104785730A (en) | 2015-05-11 | 2015-05-11 | Actuator box body casting process |
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| CN104785730A true CN104785730A (en) | 2015-07-22 |
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| CN201510235298.9A Pending CN104785730A (en) | 2015-05-11 | 2015-05-11 | Actuator box body casting process |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921693A (en) * | 2016-05-16 | 2016-09-07 | 江苏力源金河铸造有限公司 | Pouring system for electric control cabinet |
| CN106513592A (en) * | 2017-01-09 | 2017-03-22 | 浙江欧冶达机械制造有限公司 | High-performance gate valve casting |
| CN107321919A (en) * | 2017-06-27 | 2017-11-07 | 江苏力源金河铸造有限公司 | A kind of casting method based on novel oil pump body shell type |
| CN113426957A (en) * | 2021-07-12 | 2021-09-24 | 安徽海立精密铸造有限公司 | Low-gas-evolution water jacket core structure and core assembling method thereof |
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| JPS5564946A (en) * | 1978-11-13 | 1980-05-16 | Toshiba Corp | Making method of mold |
| WO2003080272A1 (en) * | 2002-03-18 | 2003-10-02 | Hormel Foods Corporation | Method and apparatus for making a sand core with an improved hardening rate |
| CN202199726U (en) * | 2011-08-04 | 2012-04-25 | 黄石东贝铸造有限公司 | Sand mould for brake hub |
| CN103212667A (en) * | 2013-03-26 | 2013-07-24 | 山东蒙凌工程机械股份有限公司 | Production process for casting gearbox housing by using V method, and V-method mold |
| CN103521702A (en) * | 2013-10-28 | 2014-01-22 | 绥阳县海红铸造有限责任公司 | Large-scale box part precoated sand shell-type casting technology method |
| CN104525870A (en) * | 2014-12-11 | 2015-04-22 | 牡丹江金缘钩缓制造有限责任公司 | Manufacturing method of buffer box body |
| CN104588581A (en) * | 2015-01-20 | 2015-05-06 | 江西弘旺汽车制动器制造有限公司 | Manufacturing method of brake drum |
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2015
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Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5564946A (en) * | 1978-11-13 | 1980-05-16 | Toshiba Corp | Making method of mold |
| WO2003080272A1 (en) * | 2002-03-18 | 2003-10-02 | Hormel Foods Corporation | Method and apparatus for making a sand core with an improved hardening rate |
| CN202199726U (en) * | 2011-08-04 | 2012-04-25 | 黄石东贝铸造有限公司 | Sand mould for brake hub |
| CN103212667A (en) * | 2013-03-26 | 2013-07-24 | 山东蒙凌工程机械股份有限公司 | Production process for casting gearbox housing by using V method, and V-method mold |
| CN103521702A (en) * | 2013-10-28 | 2014-01-22 | 绥阳县海红铸造有限责任公司 | Large-scale box part precoated sand shell-type casting technology method |
| CN104525870A (en) * | 2014-12-11 | 2015-04-22 | 牡丹江金缘钩缓制造有限责任公司 | Manufacturing method of buffer box body |
| CN104588581A (en) * | 2015-01-20 | 2015-05-06 | 江西弘旺汽车制动器制造有限公司 | Manufacturing method of brake drum |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105921693A (en) * | 2016-05-16 | 2016-09-07 | 江苏力源金河铸造有限公司 | Pouring system for electric control cabinet |
| CN106513592A (en) * | 2017-01-09 | 2017-03-22 | 浙江欧冶达机械制造有限公司 | High-performance gate valve casting |
| CN106513592B (en) * | 2017-01-09 | 2018-06-15 | 浙江欧冶达机械制造有限公司 | A kind of high-performance gate valve casting |
| CN107321919A (en) * | 2017-06-27 | 2017-11-07 | 江苏力源金河铸造有限公司 | A kind of casting method based on novel oil pump body shell type |
| CN107321919B (en) * | 2017-06-27 | 2019-04-23 | 江苏力源金河铸造有限公司 | A kind of casting method based on novel oil pump body shell type |
| CN113426957A (en) * | 2021-07-12 | 2021-09-24 | 安徽海立精密铸造有限公司 | Low-gas-evolution water jacket core structure and core assembling method thereof |
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Application publication date: 20150722 |