CN101890478A - Production process for casting spherical end cover - Google Patents
Production process for casting spherical end cover Download PDFInfo
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- CN101890478A CN101890478A CN 201010227751 CN201010227751A CN101890478A CN 101890478 A CN101890478 A CN 101890478A CN 201010227751 CN201010227751 CN 201010227751 CN 201010227751 A CN201010227751 A CN 201010227751A CN 101890478 A CN101890478 A CN 101890478A
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Abstract
The invention relates to a production process for casting a spherical end cover, which sequentially comprises the following steps of: mold manufacturing, namely manufacturing an upper formwork, a lower formwork and a mold sleeve according to the shape of the spherical end cover; core manufacturing; core setting; pouring, namely preheating a casting mold formed by the core setting, spraying a heat-resisting material on the internal surface of the preheated casting mold, preserving the heat of the sprayed casting mold, pouring casting liquid at the tapping temperature of between 1,500 and 1,550 DEG C into a cavity for 5 to 15 seconds at the pouring temperature of between 1,380 and 1,440 DEG C, and preserving the heat of a casting for 60 to 100 minutes, wherein the process yield is 45 to 60 percent, and the heat-resisting material is quartz powder and diatomite in a mass ratio of 6:1-9:1; and mold opening. The process has the advantages of simpleness, capability of improving the quality of the casting, and high processing efficiency.
Description
Technical field
The present invention relates to a kind of production way of end cap, relate in particular to a kind of casting production process of spherical end cap, specifically be applicable to the monoblock cast of spherical end cap on valve or the pump.
Background technology
End cap is as the important protection part on valve, pump or the motor; it must have stronger mechanical performance and higher decay resistance, and this has just proposed higher requirement to the manufacturing of end cap, wherein; with respect to the common planar end cap, the manufacturing of spherical end cap requires higher.
The Chinese patent publication number is CN101021194A, the patent of invention that open day is on August 22nd, 2007 discloses a kind of starting machine front end cover and processing technology thereof, this drive end bearing bracket comprises end cover body, drive end face, the middle cover end face, the switch end face, the front portion of end cover body is set to drive end face, the top is provided with an axis hole, the middle part of end cover body is set to the middle cover end face, the middle cover end face is driving between end face and the beginning face, the switch end face is positioned at the front portion of flange face, the rear portion of end cover body is provided with flange face, its processing technology is produced the end cover body blank for the sticking close precoated sand technology for making that adopts metal pattern, adopt the driving end face of numerically controlled lathe finish turning end cover body, finish turning middle cover end face carries out turning with engine lathe to the switch end face then, mills flange face, setting-out on flange face, boring, mantle fiber.Though it is reasonable in design, of a tightly knit structure to be somebody's turn to do invention, has increased intensity and precision, its complex process, working (machining) efficiency is lower.
Summary of the invention
The objective of the invention is to overcome lower defective and the problem of complex process, working (machining) efficiency that exists in the prior art, provide a kind of technology simple, the casting production process of the spherical end cap that working (machining) efficiency is higher.
For realizing above purpose, technical solution of the present invention is: a kind of casting production process of spherical end cap, this production technology comprise Mold Making, core making, core operation down, pouring operation and die sinking operation successively;
Described Mold Making is meant: make upper shuttering, following formwork and die sleeve according to the external form of spherical end cap earlier, be provided with casting liquid introducing port then at the top of upper shuttering, and the making material of mould is a metal;
Described pouring operation is meant: the casting mold to core operation back formation down carries out preheating earlier, the inner surface of the casting mold after preheating sprays heat proof material then, again the casting mold after the spraying is carried out the casting mold insulation, holding temperature is 150-200 ℃, temperature retention time is 10-20 minute, the casting liquid that with tapping temperature is 1500-1550 ℃ then injects die cavity, pouring temperature is 1380-1440 ℃, be 5-15 second the duration of pouring, carry out the casting parts thermal insulation operation again, temperature retention time is 60-100 minute, and product yield is 45%-60%.
Described pouring temperature is 1420 ℃, and be 10 seconds the duration of pouring, and temperature retention time is 80 minutes, and product yield is 53%.
The temperature of described casting mold preheating is 250-300 ℃, and be 5 hours preheating time.
Described heat proof material is silica flour and diatomite, and its mass percent is 6: 1-9: 1.
Described silica flour and diatomaceous mass percent are 8: 1, and are 2mm by the thickness of its heat proof material that constitutes.
Compared with prior art, beneficial effect of the present invention is:
1, owing to comprises Mold Making, core making, core operation down, pouring operation and die sinking operation in the casting production process of a kind of spherical end cap of the present invention successively, technological process is simple, technology maturation, and shape and material requirement at spherical end cap, in whole process, increased special flow process, as the smearing of the preheating of casting mold, heat proof material, casting parts thermal insulation or the like, these operate not only suggestion for operation, and help improving the quality and the success rate of foundry goods.Therefore not only technology is simple in the present invention, and working (machining) efficiency is higher.
2, since in the casting production process of a kind of spherical end cap of the present invention at the specific (special) requirements of spherical end cap, as mechanical performance have relatively high expectations, corrosion-resistant or the like, in pouring operation, emphasized the temperature and time of cast, in casting parts thermal insulation, emphasized temperature retention time, in addition, the constituent and composition ratio of heat proof material have also been emphasized, previous designs can guarantee that not only casting mold has stronger retractility, do not break in casting process, and can also guarantee to pour into a mould and evenly carrying out of cooling off, thereby obtain the foundry goods of better quality.Therefore the present invention can improve the quality of foundry goods.
The specific embodiment
The present invention is further detailed explanation below in conjunction with the specific embodiment
A kind of casting production process of spherical end cap, this production technology comprise Mold Making, core making, core operation down, pouring operation and die sinking operation successively;
Special feature of the present invention is: Mold Making is meant: make upper shuttering, following formwork and die sleeve according to the external form of spherical end cap earlier, be provided with casting liquid introducing port then at the top of upper shuttering, and the making material of mould is a metal; Pouring operation is meant: the casting mold to core operation back formation down carries out preheating earlier, the inner surface of the casting mold after preheating sprays heat proof material then, again the casting mold after the spraying is carried out the casting mold insulation, holding temperature is 150-200 ℃, temperature retention time is 10-20 minute, the casting liquid that with tapping temperature is 1500-1550 ℃ then injects die cavity, pouring temperature is 1380-1440 ℃, be 5-15 second the duration of pouring, carry out the casting parts thermal insulation operation again, temperature retention time is 60-100 minute, and product yield is 45%-60%; Preferred pouring temperature is 1420 ℃, and be 10 seconds the duration of pouring, and temperature retention time is 80 minutes, and product yield is 53%, and the temperature of casting mold preheating is 250-300 ℃, and be 5 hours preheating time.
Preferred heat proof material is silica flour and diatomite, and its mass percent is 6: 1-9: 1, and further preferred silica flour and diatomaceous mass percent are 8: 1, and are 2mm by the thickness of its heat proof material that constitutes.
Embodiment 1:
A kind of casting production process of spherical end cap, this production technology comprises Mold Making successively, promptly make upper shuttering according to the external form of spherical end cap earlier, following formwork and die sleeve, be provided with casting liquid introducing port then at the top of patrix elder generation, and the making material of mould is a metal, carrying out core then makes, following core operation, carry out pouring operation again, promptly earlier the casting mold that forms after core is operated is down carried out preheating, the temperature of preheating is 250-300 ℃, be 5 hours preheating time, the inner surface of the casting mold after preheating sprays heat proof material then, heat proof material is silica flour and diatomite, its mass percent is 8: 1, again the casting mold after the spraying is carried out the casting mold insulation, holding temperature is 180 ℃, temperature retention time is 15 minutes, the casting liquid that with tapping temperature is 1500-1550 ℃ then injects die cavity, and pouring temperature is 1420 ℃, and be 10 seconds the duration of pouring, carry out the casting parts thermal insulation operation again, temperature retention time is 80 minutes, and product yield is 53%, behind the cooling forming again die sinking take out foundry goods, then foundry goods is polished, promptly get required spherical end cap after the polishing.
Therefore not only technology is simple in the present invention, the quality that can improve foundry goods, and working (machining) efficiency is higher.
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 (5)
1. the casting production process of a spherical end cap, this production technology comprise successively that Mold Making, core are made, core operation down, pouring operation are operated with die sinking, it is characterized in that:
Described Mold Making is meant: make upper shuttering, following formwork and die sleeve according to the external form of spherical end cap earlier, be provided with casting liquid introducing port then at the top of upper shuttering, and the making material of mould is a metal;
Described pouring operation is meant: the casting mold to core operation back formation down carries out preheating earlier, the inner surface of the casting mold after preheating sprays heat proof material then, again the casting mold after the spraying is carried out the casting mold insulation, holding temperature is 150-200 ℃, temperature retention time is 10-20 minute, the casting liquid that with tapping temperature is 1500-1550 ℃ then injects die cavity, pouring temperature is 1380-1440 ℃, be 5-15 second the duration of pouring, carry out the casting parts thermal insulation operation again, temperature retention time is 60-100 minute, and product yield is 45%-60%.
2. the casting production process of a kind of spherical end cap according to claim 1, it is characterized in that: described pouring temperature is 1420 ℃, and be 10 seconds the duration of pouring, and temperature retention time is 80 minutes, and product yield is 53%.
3. the casting production process of a kind of spherical end cap according to claim 1 and 2, it is characterized in that: the temperature of described casting mold preheating is 250-300 ℃, be 5 hours preheating time.
4. the casting production process of a kind of spherical end cap according to claim 1 and 2, it is characterized in that: described heat proof material is silica flour and diatomite, its mass percent is 6: 1-9: 1.
5. the casting production process of a kind of spherical end cap according to claim 4, it is characterized in that: described silica flour and diatomaceous mass percent are 8: 1, and are 2mm by the thickness of its heat proof material that constitutes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102277519A CN101890478B (en) | 2010-07-16 | 2010-07-16 | Production process for casting spherical end cover |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102277519A CN101890478B (en) | 2010-07-16 | 2010-07-16 | Production process for casting spherical end cover |
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| CN101890478A true CN101890478A (en) | 2010-11-24 |
| CN101890478B CN101890478B (en) | 2012-09-26 |
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| CN2010102277519A Active CN101890478B (en) | 2010-07-16 | 2010-07-16 | Production process for casting spherical end cover |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231018A (en) * | 2013-04-24 | 2013-08-07 | 新绛县祥和机械有限公司 | Casting mold and casting method for tractor rotor part |
| CN103600036A (en) * | 2013-10-23 | 2014-02-26 | 杭州德曼汽车零部件有限公司 | Iron based coated sand casting technology for processing timing gear housing |
| CN104226912A (en) * | 2014-08-29 | 2014-12-24 | 吴江市液铸液压件铸造有限公司 | Casting technology of pressure plate |
| CN105665634A (en) * | 2016-01-25 | 2016-06-15 | 宁波钰烯阴极保护材料有限责任公司 | Production technical process for tubular silicon-iron anode |
| CN105689647A (en) * | 2016-03-16 | 2016-06-22 | 繁昌县华彩铸造有限公司 | Casting process for outlet water valve |
| CN107716848A (en) * | 2017-09-29 | 2018-02-23 | 吴江市液铸液压件铸造有限公司 | A kind of casting technique of multiway valve casting |
| CN107790639A (en) * | 2017-09-29 | 2018-03-13 | 吴江市液铸液压件铸造有限公司 | A kind of processing technology of spherical end cover casting |
| WO2019061239A1 (en) * | 2017-09-29 | 2019-04-04 | 吴江市液铸液压件铸造有限公司 | Process for fabricating spherical end cap casting |
| CN113770665A (en) * | 2021-09-14 | 2021-12-10 | 山东铭弘新能源科技有限公司 | Bearing cover process of engine core part |
-
2010
- 2010-07-16 CN CN2010102277519A patent/CN101890478B/en active Active
Non-Patent Citations (1)
| Title |
|---|
| <<全国电机水轮机第三次专业会议 电机水轮机制造专业技术革新和技术革命经验汇编 第4部分>> 19600531 第一机械工业部第八局 电机的铸铁端盖 第175-180页 1-5 , 1 * |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103231018A (en) * | 2013-04-24 | 2013-08-07 | 新绛县祥和机械有限公司 | Casting mold and casting method for tractor rotor part |
| CN103600036A (en) * | 2013-10-23 | 2014-02-26 | 杭州德曼汽车零部件有限公司 | Iron based coated sand casting technology for processing timing gear housing |
| CN104226912A (en) * | 2014-08-29 | 2014-12-24 | 吴江市液铸液压件铸造有限公司 | Casting technology of pressure plate |
| CN105665634A (en) * | 2016-01-25 | 2016-06-15 | 宁波钰烯阴极保护材料有限责任公司 | Production technical process for tubular silicon-iron anode |
| CN105665634B (en) * | 2016-01-25 | 2017-08-22 | 浙江钰烯腐蚀控制股份有限公司 | A kind of tubulose ferrosilicon anode technological process of production |
| CN105689647A (en) * | 2016-03-16 | 2016-06-22 | 繁昌县华彩铸造有限公司 | Casting process for outlet water valve |
| CN107716848A (en) * | 2017-09-29 | 2018-02-23 | 吴江市液铸液压件铸造有限公司 | A kind of casting technique of multiway valve casting |
| CN107790639A (en) * | 2017-09-29 | 2018-03-13 | 吴江市液铸液压件铸造有限公司 | A kind of processing technology of spherical end cover casting |
| WO2019061239A1 (en) * | 2017-09-29 | 2019-04-04 | 吴江市液铸液压件铸造有限公司 | Process for fabricating spherical end cap casting |
| CN113770665A (en) * | 2021-09-14 | 2021-12-10 | 山东铭弘新能源科技有限公司 | Bearing cover process of engine core part |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101890478B (en) | 2012-09-26 |
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