CN101433951A - Mold casting for producing solid mass copper alloy bearing retainer by centrifugal casting - Google Patents
Mold casting for producing solid mass copper alloy bearing retainer by centrifugal casting Download PDFInfo
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- CN101433951A CN101433951A CNA2008101875626A CN200810187562A CN101433951A CN 101433951 A CN101433951 A CN 101433951A CN A2008101875626 A CNA2008101875626 A CN A2008101875626A CN 200810187562 A CN200810187562 A CN 200810187562A CN 101433951 A CN101433951 A CN 101433951A
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Abstract
The invention relates to a solid copper alloy bearing cage mold casting produced by centrifugal casting, and belongs to the machining field. The mold casting is characterized in that the solid copper alloy bearing cage mold casting is produced by a special centrifugal casting mold. The centrifugal casting mold specially used for the casting of a vertical centrifuge adopts a double-layer structure, the inside of the casting mold is provided with a lining divided into two halves, the inner wall of each half is provided with a pocket hole, the size and shape of the pocket hole correspond to a workpiece, an end opening of the lining is provided with an end cover, and an end opening of the casting mold is provided with a gland. On the surface of the bearing cage mold casting, only few processing allowances are reserved, and the pocket hole is also made by casting, so that the solid copper alloy bearing cage is kept with good service performance, the material utilization ratio is improved, the technological defects of the work piece are reduced, the manufacturing cost is lowered, and the production efficiency is improved; moreover, the lining of the mold can be conveniently, easily and quickly replaced, and various lining molds with similar specifications form a group, and share one set of casting mold.
Description
One, technical field
The present invention relates to a kind of mold casting for producing solid mass copper alloy bearing retainer by centrifugal casting, belong to field of machining.
Two, background technology
Bearing is the consumable accessory of all kinds of plant equipment, and quality safety is very important.In various bearing holder materials, advantages such as the copper alloy solid cage is wear-resisting, anti-corrosion owing to having, low noise, suit at high temperature, at a high speed, use under the abominable running environment such as top load, safe and reliable, life-span is longer, has the production efficiency height simultaneously, the characteristics that machinability is good, be widely used on the various bearings of industries such as locomotive, metallurgy, mine, chemical industry format diameter 60mm to 2000mm.
At present, the copper alloy retainer workpiece that adopts on the domestic and international market method of dashing, forge, casting commonly used obtains embryo spare earlier, forms through machine cut again.Casting embryo spare wherein is mostly again to be that centre spinning is produced, and selects centre spinning to be based on the high-quality and the high efficient of production embryo spare of embryo spare inherence.Because action of centrifugal force, improved the feeding a casting condition, gas and nonmetal inclusion also are easy to discharge in liquid metals, and THE STRUCTURE OF CASTINGS is fine and close, and shrinkage cavity (shrinkage porosite), pore, defective such as to be mingled with less.This method is for the foundry goods with pivot, and is comparatively convenient as the production of foundry goods such as pipe, tube, cover, roller, wheel.But, at copper/copper alloy bearing solid cage workpiece, because its pocket bore portion is to remove in follow-up machine cut process, so the lumber recovery of foundry goods is lower.The weight ratio of the cover type foundry goods of workpiece and centrifugal casting only is 1: 6～10, raw material, the energy and human cost that the Unit Weight workpiece consumes are big, manufacturing cost is too high, and this is a copper alloy solid cage foundry goods price major reason for higher, also is common problem in the world.Its reason is that centre spinning exists institute's embryo spare inner surface of producing comparatively coarse, oxide is arranged and gather the slag generation, and the shortcoming that the endoporus dimensional accuracy is low can only be applied in the production of the simple foundry goods of profile.
Three, summary of the invention
The object of the present invention is to provide and a kind ofly can improve entity copper/copper alloy bearing retainer foundry goods lumber recovery, reduce the mold casting for producing solid mass copper alloy bearing retainer by centrifugal casting of manufacturing cost.
Technical scheme: the present invention adopts special-purpose centrifugal casting mould to produce entity copper/copper alloy bearing retainer mould casting.
Vertical centrifugal machine is cast special-purpose centrifugal casting mould and is adopted double-decker, lining is housed, lining dimidiation type in the casting mold, the inwall of every half mould is provided with the pocket hole, the size in pocket hole and shape are corresponding with workpiece size and shape, on the lining port end cap are housed, and on the port of casting mold gland are housed.
Horizontal centrifuge is cast special-purpose centrifugal casting mould and is adopted double-decker, lining is housed in the casting mold, lining dimidiation type, the inwall of every half mould is provided with the pocket hole, the size in pocket hole and shape are corresponding with workpiece size and shape, connecting cylinder is housed on the casting mold, and connecting cylinder is threaded with the centrifuge hollow rotating shaft.
It is in order to protect casting mold to avoid directly contacting with high-temperature liquid metal, also can to pass through the more retainer mould casting of resleeve cast different size, being convenient to realize continuous production that the present invention adopts lining.
The present invention is owing to the inwall at the lining half mould is provided with the pocket hole, corresponding by its architectural feature of retainer foundry goods that described centrifugal casting mould is produced with the workpiece shape, promptly on the retainer cast(ing) surface, only leave a spot of allowance, its pocket bore portion also is to be formed by casting, so entity copper/copper alloy bearing retainer should maintain good serviceability, improves raw-material utilization rate simultaneously, reduce workpiece manufacturability defective, reduce manufacturing cost, enhance productivity.
Centrifugal casting mould of the present invention has the more convenient, simple, fast advantage of resleeve, and the multiple lining mould of close specification is formed one group, a shared cover casting mold mould.
The present invention has kept the high-quality of centrifugal casting foundry goods inherence, and the high efficiency in the production makes retainer workpiece and casting weight ratio be kept to 1:4～6 again, thereby saved great amount of manpower and material resources and financial resources, has reduced production cost.Centre spinning and special-purpose mould are combined dexterously, again for the production of retainer foundry goods created one high-quality, efficiently, new road cheaply.The huge production ability of domestic annual entity copper/copper alloy bearing retainer, the meaning that its material, the energy and human resources are saved is very great, is the historical change of an entity copper/copper alloy bearing retainer castings production technology.
Four, description of drawings
Fig. 1 adopts mould structure schematic diagram on the vertical casting centrifuge for the present invention;
Fig. 2 is the mould structure schematic diagram on the present invention the adopts horizontal casting centrifuge;
Fig. 3 is a lining half mould perspective view of the present invention.
Five, the specific embodiment
Embodiment 1, and accompanying drawing sees Fig. 1 for details and is installed in mould structure schematic diagram on the vertical casting centrifuge.
Centrifugal casting mould of the present invention is installed in when using on the vertical casting centrifuge, and lining 3 adopts non-metal type, and the structure of interior cover can be monolithic devices or two half moulves.On the inwall of lining mould, be provided with pocket hole 7, the size in pocket hole 7 is corresponding with workpiece size and shape with shape, the lower end of lining mould 3 is provided with base plate 5, holding pin 6 tightens together end cap 4, lining mould 3, base plate 5 and casting mold 2, and bolt is fastened together the base plate of gland 1, casting mold 2 and centrifuge.
Simple and clear key point for process:
1. according to the mould casting average diameter, adjust centrifuge speed, its rotating speed is as follows:
| Foundry goods average diameter (mm) | 300 ～400 | 400 ～500 | 500 ～600 | 600 ～700 | 700 ～800 | >800 |
| Rotating speed (r/min) | 720 ～630 | 630 ～560 | 560 ～510 | 510 ～470 | 470 ～400 | 400 ～350 |
2. centrifugal mold, cast gate groove need brush graphite-like coating before using, and preheat temperature is higher than operating temperature and is 〉=200 ℃, in continuous flow procedure, should keep mold temperature at 150～200 ℃;
3. copper alloy metal liquid is quantitative, earlier the alloy liquid in the casting ladle is weighed quantitatively before the cast;
4. pouring temperature (with copper alloy ZCuZn 40Pb2 is example, down together) is 1000～1020 ℃, and be 8～10S the duration of pouring;
5. centrifugal casting operating procedure is: open centrifuge after installing mould; earlier the centre of copper alloy metal liquid from end cap 4 poured into; wait for that copper alloy metal liquid solidifies the back and shuts down; take off end cap 4, when taking out lining 3 entity copper alloy retainer mould casting is separated from lining mould 3.
The lining 3 of centrifugal casting mould of the present invention is two half mould opposite openeds when adopting metal mold.
Centrifugal casting mould of the present invention is placed on when using on the horizontal casting centrifuge, and lining mould 3 adopts non-metal type, and the structure of lining can be monolithic devices or two half moulves.Lining mould 3 inwalls are provided with pocket hole 7, and the size in pocket hole 7 and shape are corresponding with workpiece size and shape, and casting mold 2 and connecting cylinder 8 are connected by bolt, and connecting cylinder is threaded with the hollow rotating shaft employing T type of centrifuge.
Simple and clear key point for process:
1. according to the mould casting average diameter, adjust centrifuge speed, its rotating speed is as follows:
| Foundry goods average diameter (mm) | 120 ～150 | 150 ～200 | 200 ～300 | 300 ～400 | 400 ～500 | 500 ～600 |
| Rotating speed (r/min) | 1090 ～940 | 940 ～840 | 840 ～670 | 670 ～580 | 580 ～510 | 510 ～460 |
2. centrifugal mold, cast gate groove need brush graphite-like coating before using, and preheat temperature is higher than operating temperature and is 〉=200 ℃, in continuous flow procedure, should keep mold temperature at 150～200 ℃;
3. copper alloy metal liquid is quantitative, earlier the alloy liquid in the casting ladle is weighed quantitatively before the cast;
4. pouring temperature is 1000～1020 ℃, and be 8～10S the duration of pouring;
5. centrifugal casting operating procedure is: open centrifuge after installing mould; earlier the centre of copper alloy metal liquid from end cap 4 poured into; wait for that copper alloy metal liquid solidifies the back and shuts down; take off end cap 4; base plate, lining 3 are released together with foundry goods by centre bore with push rod, and entity copper alloy retainer mould casting is separated from lining mould 3.
The lining 3 of centrifugal casting mould of the present invention is two half mould opposite openeds when adopting metal mold.
Claims (3)
1, mold casting for producing solid mass copper alloy bearing retainer by centrifugal casting is characterized in that: centrifugal casting adopts special-purpose centrifugal casting mould to produce entity copper/copper alloy bearing retainer mould casting.
2, mold casting for producing solid mass copper alloy bearing retainer by centrifugal casting according to claim 1, it is characterized in that: vertical centrifugal machine is cast special-purpose centrifugal casting mould and is adopted double-decker, lining (3) is housed in the casting mold (2), lining (3) dimidiation type, the inwall of every half mould is provided with pocket hole (7), the size and the shape in pocket hole (7) are corresponding with workpiece size and shape, on lining (3) port end cap (4) are housed, and gland (1) is housed on the port of casting mold (2).
3, mold casting for producing solid mass copper alloy bearing retainer by centrifugal casting according to claim 1, it is characterized in that: horizontal centrifuge is cast special-purpose centrifugal casting mould and is adopted double-decker, lining (3) is housed in the casting mold (2), lining (3) dimidiation type, the inwall of every half mould is provided with pocket hole (7), the size and the shape in pocket hole (7) are corresponding with workpiece size and shape, and connecting cylinder (8) is housed on the casting mold (2), and connecting cylinder (8) is connected with the centrifugal basket male thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101875626A CN101433951B (en) | 2008-12-26 | 2008-12-26 | Mold casting for producing solid mass copper alloy bearing retainer by centrifugal casting |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008101875626A CN101433951B (en) | 2008-12-26 | 2008-12-26 | Mold casting for producing solid mass copper alloy bearing retainer by centrifugal casting |
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| Publication Number | Publication Date |
|---|---|
| CN101433951A true CN101433951A (en) | 2009-05-20 |
| CN101433951B CN101433951B (en) | 2010-10-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2008101875626A Active CN101433951B (en) | 2008-12-26 | 2008-12-26 | Mold casting for producing solid mass copper alloy bearing retainer by centrifugal casting |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ303638B6 (en) * | 2011-12-09 | 2013-01-23 | Zkl Hanusovice A.S. | Cast-iron mould for profiled centrifugal casting of brass half-finished products of roller-contact bearing cages with precast pockets |
| CN111360222A (en) * | 2020-03-31 | 2020-07-03 | 中国航发动力股份有限公司 | Internal connection centrifugal casting mold and using method thereof |
| CN112705675A (en) * | 2020-12-23 | 2021-04-27 | 内蒙古北方重工业集团有限公司 | Technological method for space curved surface plate type investment casting |
-
2008
- 2008-12-26 CN CN2008101875626A patent/CN101433951B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CZ303638B6 (en) * | 2011-12-09 | 2013-01-23 | Zkl Hanusovice A.S. | Cast-iron mould for profiled centrifugal casting of brass half-finished products of roller-contact bearing cages with precast pockets |
| CN111360222A (en) * | 2020-03-31 | 2020-07-03 | 中国航发动力股份有限公司 | Internal connection centrifugal casting mold and using method thereof |
| CN112705675A (en) * | 2020-12-23 | 2021-04-27 | 内蒙古北方重工业集团有限公司 | Technological method for space curved surface plate type investment casting |
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| Publication number | Publication date |
|---|---|
| CN101433951B (en) | 2010-10-06 |
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