CN104668460B - A kind of wheel brake casting method - Google Patents
A kind of wheel brake casting method Download PDFInfo
- Publication number
- CN104668460B CN104668460B CN201510124277.XA CN201510124277A CN104668460B CN 104668460 B CN104668460 B CN 104668460B CN 201510124277 A CN201510124277 A CN 201510124277A CN 104668460 B CN104668460 B CN 104668460B
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- China
- Prior art keywords
- sand mold
- wheel brake
- sand
- core
- mold
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/02—Sand moulds or like moulds for shaped castings
- B22C9/03—Sand moulds or like moulds for shaped castings formed by vacuum-sealed moulding
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/22—Moulds for peculiarly-shaped castings
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Mold Materials And Core Materials (AREA)
- Braking Arrangements (AREA)
Abstract
The invention discloses a kind of wheel brake casting method, it specifically includes following steps: 1) core mold is placed on core shooter and carries out matched moulds, carry out penetrating sand with precoated sand for raw material, prepare core, the cylindrical side wall that described core is protruding has multiple being distributed uniformly and circumferentially and for preparing the through hole of wheel brake rib；2) use V method casting technique to prepare lower sand mold and upper sand mold, described upper sand mold has pouring and riser systems；3) prepared core is placed on lower sand mold, upper sand mold is fastened on lower sand mold carries out mould assembling, form complete casting mold；4) cast after mould assembling；5) after cooling, unpacking knockout obtains foundry goods；6) again foundry goods is cleared up, remove cast overlap, burr, obtain wheel brake finished product.The present invention uses V method casting technique and precoated sand casting technique to combine to solve the difficult problem that preparation structure is complicated, have the wheel brake connected between inside and outside double-walled, its double-walled by rib.
Description
Technical field
The present invention relates to casting technology field, be specifically related to a kind of wheel brake casting method.
Background technology
The manufacture method of present stage automobile brake drum blank is mainly the casting of V method, the casting of V method is to utilize plastic sheeting to seal sandbox, by air in vacuum-pumping system extraction type, pressure differential is had inside and outside casting mold, make dry sand closely knit, there is needed for formation the die cavity of some strength, make casting solidification through lower core, mould assembling, cast evacuation, releasing negative pressure, molding sand is therewith defeated and dispersed and obtain foundry goods.The cast(ing) surface that this technique is produced is bright and clean, clear-cut, uniform in material, being different from tradition sand casting great advantage is not use binding agent, significantly alleviate sand process work, the amount of labour of foundry goods scab cleaning also greatly reduces, the old sand response rate, up to more than 95%, is suitable for multi items single and mini-batch production and production in enormous quantities.
But, it is simple that to use V method casting technique be cannot to prepare to have double-walled construction and connect between double-walled and have the wheel brake of rib.
Summary of the invention
In order to solve deficiency of the prior art, production cost is low, production efficiency is high to it is an object of the invention to provide one, the wheel brake casting method that casting quality is good.
For achieving the above object, the present invention is by the following technical solutions:
A kind of wheel brake casting method, described wheel brake includes inner and outer wall, and connecting between the inner walls and the outer has multiple rib being distributed uniformly and circumferentially；Described casting method specifically includes following steps:
1) core mold is placed on core shooter carries out matched moulds, carry out penetrating sand for raw material with precoated sand, prepare core, the cylindrical side wall that described core is protruding has multiple being distributed uniformly and circumferentially and for preparing the through hole of wheel brake rib；
2) use V method casting technique to prepare lower sand mold and upper sand mold, described upper sand mold has pouring and riser systems；
3) prepared core is placed on lower sand mold, again upper sand mold is fastened on lower sand mold and carries out mould assembling, form complete casting mold, form the die cavity for casting wheel brake inwall between wherein said core and lower sand mold, between described core and upper sand mold, form the die cavity for casting wheel brake outer wall；
4) cast after mould assembling；
5) after cooling, unpacking knockout obtains foundry goods；
6) again foundry goods is cleared up, remove cast overlap, burr, obtain wheel brake finished product.
Step 2) in, the method using V method casting technique to prepare lower sand mold is:
1) by the baking covered rearing with plastic film in mecystasis on lower bolster, vacuum pump is bled and is made plastic sheeting be close on lower bolster；
2) to Plastic film surface Cast-in-place hardfacing coating, and dry；
3) drag box with filtering suction pipe is placed on the lower bolster having covered plastic sheeting；
4) do not contain the drystone sand of binding agent toward filling in drag box, vibrations make drystone sand consolidation, strike off dry quartz sand surface, put sealing film, then by filtering suction pipe, drag box is carried out evacuation so that drag box is internally formed negative pressure；
5) release the vacuum in lower bolster, then top case molding, prepare lower sand mold.
Step 2) in, the method using V method casting technique to prepare sand mold is:
1) by the baking covered rearing with plastic film in mecystasis on cope match-plate pattern, vacuum pump is bled and is made plastic sheeting be close on cope match-plate pattern；
2) to Plastic film surface Cast-in-place hardfacing coating, and dry；
3) cope with filtering suction pipe is placed on the cope match-plate pattern having covered plastic sheeting；
4) do not contain the drystone sand of binding agent toward filling in cope, vibrations make drystone sand consolidation, offer pouring and riser systems, strike off dry quartz sand surface, put sealing film, then by filtering suction pipe, cope is carried out evacuation so that cope is internally formed negative pressure；
5) release the vacuum in cope match-plate pattern, then top case molding, prepare upper sand mold.
The present invention uses above technical scheme, has following technical effect that
1, by combine V method casting technique obtain there is good strength and the upper sand mold of the degree of packing and lower sand mold.
2, by combining precoated sand casting technique acquisition core, technique is simple and convenient, and prepares core and have enough strength and stiffness.
The present invention uses V method casting technique and precoated sand casting technique to combine to solve the difficult problem that preparation structure is complicated, have the wheel brake connected between inside and outside double-walled, its double-walled by rib, and prepared wheel brake is clear-cut, any surface finish, size is accurate.
Accompanying drawing explanation
Below in conjunction with the drawings and specific embodiments, the present invention is described in further details:
Fig. 1 is the structural representation of present invention wheel brake to be cast；
Fig. 2 is the structural representation of core；
Fig. 3 is the structural representation of lower sand mold；
Fig. 4 is the structural representation of upper sand mold；
Fig. 5 is the structural representation forming block mold after mould assembling.
Detailed description of the invention
As shown in one of Fig. 1 to 5, one wheel brake casting method of the present invention, described wheel brake 1 includes inwall 12 and outer wall 11, and connecting between inwall 12 and outer wall 11 has multiple rib 13 being distributed uniformly and circumferentially；Described casting method specifically includes following steps:
1) core 2 mould is placed on core shooter carries out matched moulds, carry out penetrating sand for raw material with precoated sand, prepare core 2, the cylindrical side wall of described core 2 projection has multiple being distributed uniformly and circumferentially and for preparing the through hole 21 of wheel brake 1 rib 13；
2) use V method casting technique to prepare lower sand mold 3 and upper sand mold 4, described upper sand mold 4 has pouring and riser systems；
3) prepared core 2 is placed on lower sand mold 3, again upper sand mold 4 is fastened on lower sand mold 3 and carries out mould assembling, form complete casting mold, form the die cavity for casting wheel brake 1 inwall 12 between wherein said core 2 and lower sand mold 3, between described core 2 and upper sand mold 4, form the die cavity for casting wheel brake 1 outer wall 11；
4) cast after mould assembling；
5) after cooling, unpacking knockout obtains foundry goods；
6) again foundry goods is cleared up, remove cast overlap, burr, obtain wheel brake 1 finished product.
Step 2) in, the method using V method casting technique to prepare lower sand mold 3 is:
1) by the baking covered rearing with plastic film in mecystasis on lower bolster, vacuum pump is bled and is made plastic sheeting be close on lower bolster, and described lower bolster is hollow, and lower bolster surface has multiple passage；
2) to Plastic film surface Cast-in-place hardfacing coating, and dry；
3) drag box with filtering suction pipe is placed on the lower bolster having covered plastic sheeting；
4) do not contain the drystone sand of binding agent toward filling in drag box, vibrations make drystone sand consolidation, strike off dry quartz sand surface, put sealing film, then by filtering suction pipe, drag box is carried out evacuation so that drag box is internally formed negative pressure；
5) release the vacuum in lower bolster, then top case molding, prepare lower sand mold 3.
Step 2) in, the method using V method casting technique to prepare sand mold 4 is:
1) by the baking covered rearing with plastic film in mecystasis on cope match-plate pattern, vacuum pump is bled and is made plastic sheeting be close on cope match-plate pattern, and described cope match-plate pattern is hollow, and cope match-plate pattern surface has multiple passage；
2) to Plastic film surface Cast-in-place hardfacing coating, and dry；
3) cope with filtering suction pipe is placed on the cope match-plate pattern having covered plastic sheeting；
4) do not contain the drystone sand of binding agent toward filling in cope, vibrations make drystone sand consolidation, offer pouring and riser systems, strike off dry quartz sand surface, put sealing film, then by filtering suction pipe, cope is carried out evacuation so that cope is internally formed negative pressure；
5) release the vacuum in cope match-plate pattern, then top case molding, prepare upper sand mold 4.
Claims (3)
1. a wheel brake casting method, described wheel brake includes inner and outer wall, and connecting between the inner walls and the outer has multiple rib being distributed uniformly and circumferentially；It is characterized in that: described casting method specifically includes following steps:
1) core mold is placed on core shooter carries out matched moulds, carry out penetrating sand for raw material with precoated sand, prepare core, the cylindrical side wall that described core is protruding has multiple being distributed uniformly and circumferentially and for preparing the through hole of wheel brake rib；
2) use V method casting technique to prepare lower sand mold and upper sand mold, described upper sand mold has pouring and riser systems；
3) prepared core is placed on lower sand mold, again upper sand mold is fastened on lower sand mold and carries out mould assembling, form complete casting mold, form the die cavity for casting wheel brake inwall between wherein said core and lower sand mold, between described core and upper sand mold, form the die cavity for casting wheel brake outer wall；
4) cast after mould assembling；
5) after cooling, unpacking knockout obtains foundry goods；
6) again foundry goods is cleared up, remove cast overlap, burr, obtain wheel brake finished product.
A kind of wheel brake casting method the most according to claim 1, it is characterised in that: step 2) in, the method using V method casting technique to prepare lower sand mold is:
1) by the baking covered rearing with plastic film in mecystasis on lower bolster, vacuum pump is bled and is made plastic sheeting be close on lower bolster；
2) to Plastic film surface Cast-in-place hardfacing coating, and dry；
3) drag box with filtering suction pipe is placed on the lower bolster having covered plastic sheeting；
4) do not contain the drystone sand of binding agent toward filling in drag box, vibrations make drystone sand consolidation, strike off dry quartz sand surface, put sealing film, then by filtering suction pipe, drag box is carried out evacuation so that drag box is internally formed negative pressure；
5) release the vacuum in lower bolster, then top case molding, prepare lower sand mold.
A kind of wheel brake casting method the most according to claim 1, it is characterised in that: step 2) in, the method using V method casting technique to prepare sand mold is:
1) by the baking covered rearing with plastic film in mecystasis on cope match-plate pattern, vacuum pump is bled and is made plastic sheeting be close on cope match-plate pattern；
2) to Plastic film surface Cast-in-place hardfacing coating, and dry；
3) cope with filtering suction pipe is placed on the cope match-plate pattern having covered plastic sheeting；
4) do not contain the drystone sand of binding agent toward filling in cope, vibrations make drystone sand consolidation, offer pouring and riser systems, strike off dry quartz sand surface, put sealing film, then by filtering suction pipe, cope is carried out evacuation so that cope is internally formed negative pressure；
5) release the vacuum in cope match-plate pattern, then top case molding, prepare upper sand mold.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510124277.XA CN104668460B (en) | 2015-03-20 | 2015-03-20 | A kind of wheel brake casting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510124277.XA CN104668460B (en) | 2015-03-20 | 2015-03-20 | A kind of wheel brake casting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104668460A CN104668460A (en) | 2015-06-03 |
| CN104668460B true CN104668460B (en) | 2016-08-24 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510124277.XA Expired - Fee Related CN104668460B (en) | 2015-03-20 | 2015-03-20 | A kind of wheel brake casting method |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104923730A (en) * | 2015-06-11 | 2015-09-23 | 柳州金特新型耐磨材料股份有限公司 | Drum brake production method through V-process casting |
| CN105057639A (en) * | 2015-08-12 | 2015-11-18 | 乳源瑶族自治县新达耐磨铸造厂 | Manufacturing method of balancing weight |
| CN105855466A (en) * | 2016-06-02 | 2016-08-17 | 龙岩盛丰机械制造有限公司 | Brake drum one-casting six-piece V-process casting technological method and brake drum one-casting six-piece V-process casting device |
| CN105945187A (en) * | 2016-06-20 | 2016-09-21 | 安徽省瑞杰锻造有限责任公司 | Machining process of drum brake |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2287623A1 (en) * | 1974-10-11 | 1976-05-07 | Pont A Mousson | DISC BRAKE DISC |
| JP3962276B2 (en) * | 2002-04-12 | 2007-08-22 | アイシン高丘株式会社 | Brake drum manufacturing method |
| US20070199778A1 (en) * | 2006-02-27 | 2007-08-30 | Lee Kwangjin M | Vented disc brake rotor |
| CN102107261A (en) * | 2009-12-23 | 2011-06-29 | 天津市盛兴祥机械制造有限公司 | Production technology for casting brake disk air channel with pre-coated sand core method |
| CN103586439B (en) * | 2013-11-21 | 2015-09-09 | 四川省祥业机械铸造有限公司 | A kind of V method casting technique of ductile iron manhole cover/ base |
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2015
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| CN104668460A (en) | 2015-06-03 |
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Effective date of registration: 20220321 Address after: 100000 1-5017, building 119 [2-1], No. 27, xidawang Road, Chaoyang District, Beijing Patentee after: Beijing Jiujian Consulting Group Co.,Ltd. Address before: 364300 factory buildings A3, A21 and A22 in Shifang industrial concentration area, Wuping County, Longyan City, Fujian Province Patentee before: ZHONGHENGTONG (FUJIAN) MACHINERY MANUFACTURING Co.,Ltd. |
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Granted publication date: 20160824 |