CN101569923A - Production method for casting cylinder liner blank for ammonia refrigerator by adopting precoated sand molding - Google Patents
Production method for casting cylinder liner blank for ammonia refrigerator by adopting precoated sand molding Download PDFInfo
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- CN101569923A CN101569923A CNA2008100112162A CN200810011216A CN101569923A CN 101569923 A CN101569923 A CN 101569923A CN A2008100112162 A CNA2008100112162 A CN A2008100112162A CN 200810011216 A CN200810011216 A CN 200810011216A CN 101569923 A CN101569923 A CN 101569923A
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- cylinder liner
- precoated sand
- liner blank
- blank
- production method
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Abstract
The invention relates to a production method for casting cylinder liner blank for an ammonia refrigerator by adopting precoated sand molding. The method is characterized in that the size of the cylinder liner blank retained with processing amount is determined according to the design requirement, and a semi-open type precoated sand die is manufactured according to the size of the cylinder liner blank; and a cylinder liner metal tyre mold is installed on a centrifugal casting machine, the semi-open type precoated sand die for the cylinder liner blank is loaded in the cylinder liner metal tyre mold for casting, and the iron liquor smelted through a cupola and containing different percentages of various metallic elements is cast in the cylinder liner metal tyre mold of the centrifugal casting machine. The invention is a production method for casting the cylinder liner blank for the ammonia refrigerator by adopting precoated sand molding, because the weight of the cylinder liner blank, the mechanical processing amount and the cost of the products are all reduced, the production efficiency is improved; because the precoated sand is separated on the surface of the cylinder liner blank for water cooling, the chilling is caused by the water cooling, the surface hardness of the cylinder liner blank is less influenced; and the mechanical processing is convenient and the working environment of the workers is improved.
Description
Technical field
The invention belongs to casting technology field, is a kind ofly to produce cylinder liner blank with centrifugal casting, particularly a kind of production method that adopts precoated sand sleeve forming casting ammonia machine cylinder liner blank.
Background technology
At present, cylinder liner blank is produced in centrifugal casting both at home and abroad, and tradition is to adopt the metal type dies spun casting, adopts many step tapers to go out embrane method and wet type coating.The cylinder liner blank of casting exists in this way: 1, cylinder liner blank weight is big, is 3 times of processing back cylinder sleeve product weight, causes cylinder sleeve production cost height; 2, Quench is caused because of water-cooled in the cylinder liner blank surface, and makes cylinder liner blank case hardness height, brings difficulty to machined; 3, owing to use metal film casting cylinder liner blank, the main component of the wet coating of the refractory material in the metal film chamber is silica flour, lead powder, bentonite and washing powder, and silica flour and lead powder dust are big, and are harmful substances, directly influence the healthy of operator.
Summary of the invention
The present invention has overcome the defective of above-mentioned existence, purpose is to control cold machine cylinder liner blank for produce casting ammonia with spun casting, and a kind of workman's of improvement operating environment, a kind of production method that adopts precoated sand sleeve forming casting ammonia machine cylinder liner blank that reduces production costs, enhances productivity are provided.
A kind of production method content Description that adopts precoated sand sleeve forming casting ammonia machine cylinder liner blank of the present invention:
A kind of production method that adopts precoated sand sleeve forming casting ammonia machine cylinder liner blank of the present invention is characterized in that: adopt the production method of precoated sand sleeve forming casting ammonia machine cylinder liner blank to be finished by following steps:
(1), determines to leave the cylinder liner blank size of processing capacity by designing requirement, and make semi-open type precoated sand mold by the cylinder liner blank size, in the precoated sand mold, load the precoated sand of 50～100 order particles, deliver to sinter molding in the coke baking kiln, the sintering temperature of coke baking kiln is 250～400 ℃; Precoated sand mold after the taking-up sinter molding is brushed the fireproof coating that is diluted by the fire-resistant lead powder of height at the inner chamber of precoated sand mold;
(2), cylinder sleeve metal loose tool is installed on centrifugal casting machine, cylinder liner blank semi-open type precoated sand mold is packed in the cylinder sleeve metal loose tool, front and back press fire-resistant asbestos pad, front portion at cylinder sleeve metal loose tool presses door, plug lock pin, start the centrifugal casting machine rotation, rotating speed is 1100～1300 rev/mins;
(3), the iron liquid of the multiple metallic element that contains different weight percentage that will be smelted by soaring cupola furnace is cast in the centrifugal casting machine cylinder sleeve metal loose tool, the iron liquid temp is controlled at 1350～1400 ℃, give water cooling after half a minute, cooled cylinder liner blank is controlled at 700～800 ℃, 3～5 minutes time, be purplish red, cylinder liner blank depanning, cooling naturally, the precoated sand cover of cylinder liner blank appearance comes off deburr automatically.
The present invention is a kind of production method that adopts precoated sand sleeve forming casting ammonia machine cylinder liner blank, since alleviated cylinder liner blank weight, reduced machining amount, reduced product cost, improved production efficiency, water cooling is carried out because of there being the precoated sand cover to isolate in surface at cylinder liner blank, water-cooled causes Quench, the cylinder liner blank case hardness there is not big influence, be convenient to machining, and improved workman's operating environment.
The specific embodiment
The present invention is a kind of to be adopted the production method of precoated sand sleeve forming casting ammonia machine cylinder liner blank to do below being achieved in that to specify.
At first determine to leave the cylinder liner blank size of processing capacity by designing requirement, and make semi-open type precoated sand mold by the cylinder liner blank size, load the precoated sand of 50～100 order particles in the precoated sand mold, deliver to sinter molding in the coke baking kiln, the sintering temperature of coke baking kiln is 250～400 ℃; Precoated sand mold after the taking-up sinter molding is brushed the fireproof coating that is diluted by the fire-resistant lead powder of height at the inner chamber of precoated sand mold, uses in order to centrifugal casting machine.
The cylinder sleeve metal loose tool of different specification size is installed on centrifugal casting machine, the cylinder liner blank semi-open type precoated sand mold of different specification size is encased in the cylinder sleeve metal loose tool of being checked the number, front and back press fire-resistant asbestos pad, front portion at cylinder sleeve metal loose tool presses door, plug lock pin, start the centrifugal casting machine rotation, adjusting rotating speed is 1100～1300 rev/mins.
The iron liquid of the multiple metallic element that contains different weight percentage that will be smelted by soaring cupola furnace is cast in the centrifugal casting machine cylinder sleeve metal loose tool, metallic element mainly contains C, Si, P, Mn, Cr, carbon content is by the control of increase and decrease steel scrap, other metallic element is by the control of increase and decrease addition, various metallic elements are carried out on-the-spot sample analysis, the iron liquid temp is controlled at 1350～1400 ℃, give water cooling after half a minute, cooled cylinder liner blank is controlled at 700～800 ℃, 3～5 minutes time was purplish red, the cylinder liner blank depanning, naturally cooling, the precoated sand cover of cylinder liner blank appearance comes off automatically, and deburr forwards machining to.
Claims (1)
1, a kind of production method that adopts precoated sand sleeve forming casting ammonia machine cylinder liner blank is characterized in that: adopt the production method of precoated sand sleeve forming casting ammonia machine cylinder liner blank to be finished by following steps:
(1), determines to leave the cylinder liner blank size of processing capacity by designing requirement, and make semi-open type precoated sand mold by the cylinder liner blank size, in the precoated sand mold, load the precoated sand of 50～100 order particles, deliver to sinter molding in the coke baking kiln, the sintering temperature of coke baking kiln is 250～400 ℃; Precoated sand mold after the taking-up sinter molding is brushed the fireproof coating that is diluted by the fire-resistant lead powder of height at the inner chamber of precoated sand mold;
(2), cylinder sleeve metal loose tool is installed on centrifugal casting machine, cylinder liner blank semi-open type precoated sand mold is packed in the cylinder sleeve metal loose tool, front and back press fire-resistant asbestos pad, front portion at cylinder sleeve metal loose tool presses door, plug lock pin, start the centrifugal casting machine rotation, rotating speed is 1100～1300 rev/mins;
(3), the iron liquid of the multiple metallic element that contains different weight percentage that will be smelted by soaring cupola furnace is cast in the centrifugal casting machine cylinder sleeve metal loose tool, the iron liquid temp is controlled at 1350～1400 ℃, give water cooling after half a minute, cooled cylinder liner blank is controlled at 700～800 ℃, 3～5 minutes time, be purplish red, cylinder liner blank depanning, cooling naturally, the precoated sand cover of cylinder liner blank appearance comes off deburr automatically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100112162A CN101569923A (en) | 2008-04-29 | 2008-04-29 | Production method for casting cylinder liner blank for ammonia refrigerator by adopting precoated sand molding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008100112162A CN101569923A (en) | 2008-04-29 | 2008-04-29 | Production method for casting cylinder liner blank for ammonia refrigerator by adopting precoated sand molding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101569923A true CN101569923A (en) | 2009-11-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008100112162A Pending CN101569923A (en) | 2008-04-29 | 2008-04-29 | Production method for casting cylinder liner blank for ammonia refrigerator by adopting precoated sand molding |
Country Status (1)
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| CN (1) | CN101569923A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328034A (en) * | 2011-10-17 | 2012-01-25 | 中钢集团邢台机械轧辊有限公司 | Cold type coated sand paint coating process for casting |
| CN104308114A (en) * | 2014-11-13 | 2015-01-28 | 四川南车共享铸造有限公司 | Centrifugal casting die for tubular castings and centrifugal casting method of tubular castings |
| CN107855484A (en) * | 2017-11-27 | 2018-03-30 | 安徽省岳西缸套有限公司 | The pneumatic gun spraying casting technique of cylinder sleeve |
-
2008
- 2008-04-29 CN CNA2008100112162A patent/CN101569923A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102328034A (en) * | 2011-10-17 | 2012-01-25 | 中钢集团邢台机械轧辊有限公司 | Cold type coated sand paint coating process for casting |
| CN104308114A (en) * | 2014-11-13 | 2015-01-28 | 四川南车共享铸造有限公司 | Centrifugal casting die for tubular castings and centrifugal casting method of tubular castings |
| CN104308114B (en) * | 2014-11-13 | 2018-08-28 | 四川南车共享铸造有限公司 | A kind of centrifugal casting process of barrel structure castings |
| CN107855484A (en) * | 2017-11-27 | 2018-03-30 | 安徽省岳西缸套有限公司 | The pneumatic gun spraying casting technique of cylinder sleeve |
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Open date: 20091104 |