CN111360222A - Internal connection centrifugal casting mold and using method thereof - Google Patents
Internal connection centrifugal casting mold and using method thereof Download PDFInfo
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- CN111360222A CN111360222A CN202010245212.1A CN202010245212A CN111360222A CN 111360222 A CN111360222 A CN 111360222A CN 202010245212 A CN202010245212 A CN 202010245212A CN 111360222 A CN111360222 A CN 111360222A
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- mold
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D13/00—Centrifugal casting; Casting by using centrifugal force
- B22D13/10—Accessories for centrifugal casting apparatus, e.g. moulds, linings therefor, means for feeding molten metal, cleansing moulds, removing castings
- B22D13/101—Moulds
Abstract
The invention discloses an internal connection centrifugal casting mold and a using method thereof, wherein the internal connection centrifugal casting mold comprises a mold body and a mold cover, the mold body is of a cavity structure with an opening at one end, a first groove is formed in the outer side of the bottom of the mold body and is used for being matched with a first boss on a centrifuge chassis, a plurality of connecting holes corresponding to holes in the centrifuge chassis are formed in the bottom of the mold body, and the mold cover is arranged at a position, close to the top, of a cavity of the mold body; when the die body is used, one end of the connecting piece extends into the hole in the centrifuge chassis and the connecting hole at the bottom of the die body, and then the die body is fixedly connected with the centrifuge chassis. The invention can produce larger centrifugal castings on the existing centrifugal machine, namely, the centrifugal castings with larger sizes can be produced by improving the mold structure of the centrifugal castings and digging the casting capacity of the vertical centrifugal machine, the bearing range of the centrifugal castings is expanded, and the invention creates benefits for the development of companies.
Description
Technical Field
The invention belongs to the technical field of centrifugal casting processes, and particularly relates to an internal connection centrifugal casting mold and a using method thereof.
Background
Centrifugal casting is a technological process in which molten alloy is injected into a casting mold under high-speed rotation, and the molten alloy is solidified and formed under the action of centrifugal force. The metal casting mould (mould) used for vertical centrifugal casting is mainly used for processing annular castings such as bimetallic rolls, shaft sleeves and casings. The mold is usually made of gray iron, ductile iron, steel and the like through casting or forging and processing, an outer flange is usually designed at the lower part of the mold, a U-shaped hole is processed on the flange, and the casting mold is fixed on a chassis of a centrifuge through bolts.
The lower groove of the mold bottom 8 of the existing mold is matched with a central boss of a centrifuge chassis 5, a circular truncated cone in the mold body 1 is matched with an outer circle of the mold bottom, when the mold body 1 is combined, the mold body 1 is pressed on the mold bottom 8, meanwhile, a U-shaped hole in a mold body flange is aligned with a T-shaped groove of the centrifuge chassis, the mold body is fixed on the centrifuge through a connecting bolt, and fig. 1 is a structural schematic diagram of the existing mold.
The vertical centrifugal casting capacity depends on the bearing capacity of the centrifuge and the size of a centrifuge chassis, and due to the limitation of the flange outside the die body, the maximum size of a produced centrifugal piece is far smaller than the size of the centrifuge chassis provided by a centrifuge manufacturer, namely the maximum production capacity of the size. As shown in fig. 1, the centrifuge chassis size is 1200mm, and the maximum size of the centrifugal casting that can be produced cannot exceed 880mm due to the limitations of the attachment flange.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides an internally-connected centrifugal casting mold and a use method thereof, which can realize the production of centrifugal castings with larger sizes by improving the mold structure of the centrifugal castings and digging the casting capacity of a vertical centrifugal machine, expand the bearing range of the centrifugal castings and create benefits for companies.
In order to solve the technical problems, the invention is realized by the following technical scheme:
an internal connection centrifugal casting mold comprises a mold body and a mold cover, wherein the mold body is of a cavity structure with an opening at one end, a first groove is formed in the outer side of the bottom of the mold body and used for being matched with a first boss on a centrifuge chassis, a plurality of connecting holes corresponding to holes in the centrifuge chassis are formed in the bottom of the mold body, and the mold cover is installed at a position, close to the top, of a cavity of the mold body;
when the die body is used, one end of the connecting piece extends into the hole in the centrifuge chassis and the connecting hole at the bottom of the die body, and then the die body is fixedly connected with the centrifuge chassis.
The die body is provided with a cavity, and the cavity is provided with a connecting hole; the connecting hole formed in the bottom of the die body is a through hole.
Furthermore, a second boss is arranged on the inner side of the bottom of the die body, a second groove corresponding to the second boss is further formed in the bottom of the cushion block, and the second groove is in clearance fit with the second boss.
Further, the central line of the second boss coincides with the central line of the bottom of the die body.
The die cover is arranged in the cavity of the die body in a matched mode, the die cover is located on the upper end face of the cushion block, and the die cover is tightly pressed on the top of the die cover.
Furthermore, a pin hole is formed in the side wall of the die body, the pin hole is close to the top of the die sleeve, and a pin is inserted into the pin hole and used for tightly pressing the die cover.
Furthermore, a pouring hole for pouring the pouring liquid is formed in the die cover.
Further, the central line of the first groove is coincident with the central line of the bottom of the die body.
Furthermore, the bottom of the die body is provided with an exhaust hole.
The use method of the internal connection centrifugal casting mold comprises the following steps:
mounting the die body on a centrifuge chassis, enabling the first groove to be in clearance fit with a first boss on the centrifuge chassis, extending one end of the connecting piece into a hole on the centrifuge chassis and a connecting hole at the bottom of the die body, and fixedly connecting the die body with the centrifuge chassis;
installing the cushion block in a cavity of the die body to enable the second groove to be in clearance fit with the second boss;
installing the die sleeve in a cavity of the die body, pressing the die cover on the die sleeve, inserting the pin into the pin hole, and pressing the die cover;
and connecting the pouring hole on the mold cover with a pouring system, and starting pouring.
Compared with the prior art, the invention has at least the following beneficial effects: the invention relates to an internal connection centrifugal casting mold, wherein a mold body is of a cavity structure with an opening at one end, a first groove is formed in the outer side of the bottom of the mold body and is used for being matched with a first boss on a centrifuge chassis, a plurality of connecting holes corresponding to holes in the centrifuge chassis are formed in the bottom of the mold body, when the mold is used, one end of a connecting piece extends into the holes in the centrifuge chassis and the connecting holes in the bottom of the mold body, the mold body is fixedly connected with the centrifuge chassis, and a mold cover is arranged at a position, close to the top, of a cavity of the mold body. Compared with the prior art, the original connection mode of the outer flange and the centrifuge chassis is improved to be that the outer flange is connected with the centrifuge chassis through the interior of the die body, so that larger centrifugal castings can be produced on the existing centrifuge, namely, the casting capacity of the vertical centrifuge is excavated through improving the die structure of the centrifugal castings, the centrifugal castings with larger sizes are produced, the bearing range of the centrifugal castings is expanded, and the development benefit of a company is created. For example, the centrifugal chassis is 1500mm, the original mold can produce a centrifugal casting with the maximum outer diameter of 1180mm, and the centrifugal casting with the outer diameter of 1180-1400 mm can be produced after improvement.
Further, increase a cushion in the die body, the cushion matches and sets up in the cavity bottom of die body, forms a part of casting mould, and the groove that corresponds with the connecting hole is seted up to the bottom of cushion for the connecting piece bolt that is used for connecting die body and centrifuge chassis can stretch into the inslot, avoids causing the interference, protects connecting bolt not influenced by high temperature simultaneously.
Furthermore, a second boss is arranged on the inner side of the bottom of the die body, a second groove corresponding to the second boss is further formed in the bottom of the cushion block, and the second groove is in clearance fit with the second boss, so that the die body and the cushion block are convenient to mount.
Furthermore, because the processing and manufacturing cost of the die body is high, the die sleeve is added, the die sleeve is arranged in the cavity of the die body in a matching mode, the die sleeve is located on the upper end face of the cushion block, and casting liquid is centrifugally cooled and solidified in the die sleeve to form a casting during pouring, so that direct contact with the die body is avoided, the service life of the die body can be prolonged, and the cost is saved.
Furthermore, a pin hole is formed in the side wall of the die body, the pin hole is close to the top of the die sleeve, a pin is inserted into the pin hole, the pin can tightly press the die cover, the mounting reliability of the die cover is guaranteed, and the mounting mode is simple and convenient.
Furthermore, the central line of the first groove is superposed with the central line of the bottom of the die body, and when the die body is matched with the chassis of the centrifuge, the center of the die body is consistent with the center of the centrifuge, so that high-speed stable rotation is ensured.
Furthermore, the bottom of the die body is provided with an exhaust hole, gas generated during pouring can be exhausted from the exhaust hole, and the problem of poor quality of a poured product caused by the fact that the gas cannot be exhausted is avoided.
The use method of the internal connection centrifugal casting mold is simple and easy to operate.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic diagram of a prior art mold;
FIG. 2 is a schematic structural view of the mold and centrifuge of the present invention when installed;
FIG. 3 is a schematic structural diagram of a mold according to an embodiment of the present invention;
fig. 4 is a schematic structural view of a casting in an embodiment of the invention.
In the figure: 1-a mold body; 10-a first groove; 11-a second boss; 12-an exhaust hole; 13-connecting holes; 14-pin holes; 2-a mould cover; 20-a pouring hole; 3-cushion block; 30-groove; 31-a second groove; 4-die sleeve; 5-centrifuge chassis; 50-a first boss; 6-a centrifuge; 7-a threaded hole; 8-mold bottom.
Detailed Description
To make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As a specific embodiment of the present invention, as shown in fig. 2 and 3, an inner connection centrifugal casting mold is used in cooperation with a centrifuge 6 when in use, a first boss 50 is provided on a centrifuge chassis 5 on the centrifuge 6, and a hole for installing the mold is further provided on the centrifuge chassis 5. Specifically, the mold comprises a mold body 1, a mold cover 2 and a cushion block 3, wherein the mold body 1 is of a cavity structure with an opening at one end, a first groove 10 is formed in the outer side of the bottom of the mold body 1, the center line of the first groove 10 is overlapped with the center line of the bottom of the mold body 1, namely the first groove 10 is formed in the center of the bottom of the mold body 1, the first groove 10 is used for being matched with a first boss 50 on a centrifuge chassis 5, and the first groove 10 and the first boss 50 are in clearance fit. The bottom of the mold body 1 is further provided with a plurality of connecting holes 13 corresponding to the holes on the centrifuge chassis 5, preferably, the connecting holes 13 provided at the bottom of the mold body 1 are U-shaped through holes, and when in use, one end of the connecting member extends into the holes on the centrifuge chassis 5 and the connecting holes 13 at the bottom of the mold body 1, and then the mold body 1 is fixedly connected with the centrifuge chassis 5, as shown in fig. 2, the connecting member in this embodiment is a bolt. The mold cover 2 is installed at a position of the cavity of the mold body 1 close to the top, and the mold cover 2 is provided with a pouring hole 20 for pouring liquid.
As shown in fig. 2 and 3, the cushion block 3 is installed at the bottom of the cavity of the mold body 1 in a matching manner, and the bottom of the cushion block 3 is provided with a groove 30 corresponding to the connecting hole 13, so that the bolt for connecting the mold body 1 and the centrifuge chassis 5 can extend into the groove 30, and interference is avoided. The inner side of the bottom of the die body 1 is provided with a second boss 11, the second boss 11 in this embodiment is a conical boss, the center line of the second boss 11 coincides with the center line of the bottom of the die body 1, the bottom of the cushion block 3 is provided with a second groove 31 corresponding to the second boss 11, the second groove 31 is in clearance fit with the second boss 11, and the upper end face of the cushion block 3 is a plane, so that the bottom of the casting mold is formed. The bottom of the die body 1 is provided with an exhaust hole 12, specifically, the exhaust hole 12 is arranged at the central position of the second boss 11, and gas generated during pouring can be discharged from the exhaust hole, so that the problem of poor quality of a poured product caused by the fact that the gas cannot be discharged is avoided.
As shown in fig. 3, as a certain preferred embodiment of the present invention, the mold further includes a mold sleeve 4, the mold sleeve 4 is fittingly disposed in the cavity of the mold body 1, the mold sleeve 4 is located on the upper end surface of the cushion block 3, and the mold cover 2 is tightly pressed on the top of the mold sleeve 4. The side wall of the die body 1 is provided with a pin hole 14, and the pin hole 14 is arranged close to the top of the die sleeve 4, so that a pin can be inserted into the pin hole 14 and can press the die cover 2 tightly.
As shown in fig. 2 and 3, the die cover 2, the cushion block 3 and the die sleeve 4 are respectively provided with a plurality of threaded holes 7, and when the die is assembled, lifting hooks are screwed into the threaded holes 7, and then the die is lifted and assembled by a navigation vehicle, so that the die is convenient to install.
The invention relates to a using method of an internal connection centrifugal casting mold, which comprises the following specific steps:
the die body 1 is arranged on a centrifuge chassis 5, a first groove 10 is in clearance fit with a first boss 50 on the centrifuge chassis 5, one end of a connecting piece extends into a hole on the centrifuge chassis 5 and a connecting hole 13 at the bottom of the die body 1, and then the die body 1 is fixedly connected with the centrifuge chassis 5; installing the cushion block 3 in the cavity of the die body 1 to ensure that the second groove 31 is in clearance fit with the second boss 11; installing a die sleeve 4 in a cavity of a die body 1, pressing a die cover 2 on the die sleeve 4, inserting a pin into a pin hole 14, and pressing the die cover 2 tightly; the pouring orifice 20 in the mould cover 2 is connected to the pouring system and pouring is started.
One specific design application embodiment of the invention is as follows:
① part name, shaft sleeve;
② casting material is duplex stainless steel;
③ the external diameter of the casting is phi 1335.7mm, the height is 221mm, and the casting structure is shown in figure 4.
④ the casting method is centrifugal casting, and the rotating speed is 260 r/min.
⑤ mold design the mold cover, the mold sleeve, and the shoe form the casting cavity, the mold design is shown in FIG. 3.
⑥ die assembly:
a first groove 10 (the diameter of the groove is phi 363mm) formed in the middle of the die body 1 is arranged on a first boss 50 in the middle of the centrifuge chassis 5, a U-shaped hole in the die body 1 is aligned with a T-shaped groove of the centrifuge chassis 5, a bolt placed in the T-shaped groove in advance is fastened, and the die body 1 is fixed on the centrifuge chassis 5;
the cushion block 3 is arranged in the die body 1 through a tapered groove (a second groove 31) formed in the middle of the bottom of the cushion block and a tapered boss (a second boss 11) arranged in the middle of the bottom of the die body 1, and the tapered groove and the tapered boss are in clearance fit;
placing the die sleeve 4 on the cushion block 3 along the inner wall of the die body 1;
pressing the die cover 2 on the die sleeve 4;
inserting a round pin into a pin hole 14 designed on the die body 1, and fastening and compacting the die cover 2;
placing a pouring system which passes through a pouring hole 20 formed in the middle of the mold cover 2.
⑦ casting production, the molten alloy liquid is injected into the cavity rotating at high speed through a pouring gate (pouring hole 20), and is cooled and solidified under the action of centrifugal force to form the casting.
12 pieces are produced in the embodiment, the size meets the requirement of a drawing, and the quality reaches the acceptance standard.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. An internal connection centrifugal casting mold is characterized in that: the mold comprises a mold body (1) and a mold cover (2), wherein the mold body (1) is of a cavity structure with an opening at one end, a first groove (10) is formed in the outer side of the bottom of the mold body (1), the first groove (10) is used for being matched with a first boss (50) on a centrifuge chassis (5), a plurality of connecting holes (13) corresponding to holes in the centrifuge chassis (5) are further formed in the bottom of the mold body (1), and the mold cover (2) is installed at a position, close to the top, of a cavity of the mold body (1);
when the connecting piece is used, one end of the connecting piece extends into a hole on the centrifuge chassis (5) and a connecting hole (13) at the bottom of the die body (1), and then the die body (1) is fixedly connected with the centrifuge chassis (5).
2. The internal connection centrifugal casting mold of claim 1, wherein: the die body is characterized by further comprising a cushion block (3), wherein the cushion block (3) is arranged at the bottom of the cavity of the die body (1) in a matched mode, and a groove (30) corresponding to the connecting hole (13) is formed in the bottom of the cushion block (3); the connecting hole (13) formed in the bottom of the die body (1) is a through hole.
3. An internal connection centrifugal casting mold as defined in claim 2, wherein: the die body is characterized in that a second boss (11) is arranged on the inner side of the bottom of the die body (1), a second groove (31) corresponding to the second boss (11) is further formed in the bottom of the cushion block (3), and the second groove (31) is in clearance fit with the second boss (11).
4. An internal connection centrifugal casting mold according to claim 3, wherein: the central line of the second boss (11) is superposed with the central line of the bottom of the die body (1).
5. An internal connection centrifugal casting mold as defined in claim 2, wherein: the die cover is characterized by further comprising a die sleeve (4), wherein the die sleeve (4) is arranged in the cavity of the die body (1) in a matched mode, the die sleeve (4) is located on the upper end face of the cushion block (3), and the die cover (2) is tightly pressed on the top of the die sleeve (4).
6. An internal connection centrifugal casting mold according to claim 5, wherein: the die body (1) is provided with a pin hole (14) on the side wall, the pin hole (14) is close to the top of the die sleeve (4), and a pin is inserted into the pin hole (14) and used for tightly pressing the die cover (2).
7. The internal connection centrifugal casting mold of claim 1, wherein: and a pouring hole (20) for pouring liquid is formed in the die cover (2).
8. The internal connection centrifugal casting mold of claim 1, wherein: the central line of the first groove (10) is superposed with the central line of the bottom of the die body (1).
9. The internal connection centrifugal casting mold of claim 1, wherein: the bottom of the die body (1) is provided with an exhaust hole (12).
10. The use of an internal connection centrifugal casting mold as claimed in any one of claims 1 to 9, wherein:
the die body (1) is arranged on a centrifuge chassis (5), the first groove (10) is in clearance fit with a first boss (50) on the centrifuge chassis (5), one end of a connecting piece extends into a hole on the centrifuge chassis (5) and a connecting hole (13) at the bottom of the die body (1), and then the die body (1) is fixedly connected with the centrifuge chassis (5);
the cushion block (3) is arranged in a cavity of the die body (1), so that the second groove (31) is in clearance fit with the second boss (11);
the die sleeve (4) is arranged in a cavity of the die body (1), the die cover (2) is pressed on the die sleeve (4), a pin is inserted into the pin hole (14), and the die cover (2) is pressed tightly;
and connecting the pouring hole (20) on the mold cover (2) with a pouring system, and starting pouring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010245212.1A CN111360222A (en) | 2020-03-31 | 2020-03-31 | Internal connection centrifugal casting mold and using method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010245212.1A CN111360222A (en) | 2020-03-31 | 2020-03-31 | Internal connection centrifugal casting mold and using method thereof |
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| CN111360222A true CN111360222A (en) | 2020-07-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010245212.1A Pending CN111360222A (en) | 2020-03-31 | 2020-03-31 | Internal connection centrifugal casting mold and using method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113245532A (en) * | 2021-04-12 | 2021-08-13 | 广州万宝电机有限公司 | Rotor machining method |
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| DE513994C (en) * | 1930-12-05 | Mannesmann Ag | Device for casting hollow metal bodies in rotating, vertically standing, easily replaceable molds resting in a shell | |
| CN2106672U (en) * | 1991-05-18 | 1992-06-10 | 于长垒 | Centrifugal casting machine for mouth of steel cylinders |
| CN1080220A (en) * | 1993-03-24 | 1994-01-05 | 化学工业部湘东化工机械厂 | Heat-resistant high alloy steel bulb centre spinning and casting mould thereof |
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| CN102744385A (en) * | 2012-07-23 | 2012-10-24 | 武汉武船金属制造有限责任公司 | Casting mold locating and locking structure of vertical centrifugal casting machine |
| CN206169224U (en) * | 2016-09-26 | 2017-05-17 | 山西光华铸管有限公司 | Small -size centrifuge that work piece easily unloaded |
| CN206425516U (en) * | 2016-10-12 | 2017-08-22 | 天津泰铭电力装备股份有限公司 | A kind of extensible centrifugal casting roller set frock |
| CN109676107A (en) * | 2018-12-27 | 2019-04-26 | 桂林理工大学 | A kind of three layers of the almag not compound ring short route manufacturing method of uniform thickness |
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2020
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Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE513994C (en) * | 1930-12-05 | Mannesmann Ag | Device for casting hollow metal bodies in rotating, vertically standing, easily replaceable molds resting in a shell | |
| CN2106672U (en) * | 1991-05-18 | 1992-06-10 | 于长垒 | Centrifugal casting machine for mouth of steel cylinders |
| CN1080220A (en) * | 1993-03-24 | 1994-01-05 | 化学工业部湘东化工机械厂 | Heat-resistant high alloy steel bulb centre spinning and casting mould thereof |
| CN101433951A (en) * | 2008-12-26 | 2009-05-20 | 内蒙古北方重工业集团有限公司 | Mold casting for producing solid mass copper alloy bearing retainer by centrifugal casting |
| CN102744385A (en) * | 2012-07-23 | 2012-10-24 | 武汉武船金属制造有限责任公司 | Casting mold locating and locking structure of vertical centrifugal casting machine |
| CN206169224U (en) * | 2016-09-26 | 2017-05-17 | 山西光华铸管有限公司 | Small -size centrifuge that work piece easily unloaded |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113245532A (en) * | 2021-04-12 | 2021-08-13 | 广州万宝电机有限公司 | Rotor machining method |
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