CN104325087A - Water suffocating hole-free casting process for cylinder cover of single cylinder diesel engine and sand core for casting process - Google Patents
Water suffocating hole-free casting process for cylinder cover of single cylinder diesel engine and sand core for casting process Download PDFInfo
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- CN104325087A CN104325087A CN201410579226.1A CN201410579226A CN104325087A CN 104325087 A CN104325087 A CN 104325087A CN 201410579226 A CN201410579226 A CN 201410579226A CN 104325087 A CN104325087 A CN 104325087A
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- core
- stud
- sand core
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- core body
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/10—Cores; Manufacture or installation of cores
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses a water suffocating hole-free casting process for a cylinder cover of a single cylinder diesel engine and a sand core for the casting process. The casting process comprises the following steps: 1, manufacturing an upper mold, a lower mold and the sand core, and coating the outer surface of the sand core with a low-gas-evolution coating; 2, manufacturing a core support, and mounting the core support at the gravity position on the upper plane of the sand core, wherein a gas discharging hole is formed in the center of the core support, the lower half part of the core support is arranged in the sand core, and the gas discharging hole in the center of the core support is communicated with the sand core to discharge gas in the sand core; 3, arranging waterway feet on the bottom surface of the sand core, and mounting gas discharging needles for discharging gas on the waterway feet and into the sand core; 4, mounting the sand core in the lower mold, and closing the upper mold to enable the inner surface of the upper mold to be attached to the upper plane of the core support; and 5, casting molten iron into the upper mold and the lower mold which are closed by virtue of a casting head. The positioning function of an original water suffocating hole is achieved by the core support, so that the process is simplified, the production efficiency is improved, and a great amount of time and fund investment are saved.
Description
Technical field
The present invention relates to a kind of anhydrous vexed hole single cylinder diesel casting process of cylinder cap and core used.
Background technology
The casting technique of existing one-cylinder diesel cylinder cap, adopt has water vexed hole cast more, and water vexed hole core print mainly plays location in casting, be vented, the effect such as to shake out, and continued to use for many years, the maturation that technique is also relative in the production of reality.But also there are some disadvantages, the vexed hole machined of water and setting-out stifle two procedures is added due to corresponding after the increase vexed hole of water, and often can occur because the initiation that comes off of water stifle is leaked in the process of the use of diesel engine, especially very easily to get rusty phenomenon at coastal area water stifle, simultaneously, thick hinge is needed when the vexed hole of process water, finish ream two procedures, corresponding two positioning fixtures, two bench drills, two stations are operated by two employees with regard to needs, also need regularly to overhaul lathe and maintain, spend relatively large manpower and materials, cause production efficiency low, process costs is high.Therefore the enterprise had once proposed the imagination will cancelling the vexed hole of water, but suffer from and there is no better advanced technologies to replace original personated old man's production. art, be in the situation of stagnation always, if cancel the vexed hole of water, its casting technique aspect will solve cylinder cap in the location of casting water channel sand cores, exhaust a series of problem such as to shake out.
Summary of the invention
The technical problem to be solved in the present invention is: overcome the deficiency in prior art, provides the anhydrous vexed hole single cylinder diesel casting process of cylinder cap of a kind of energy simplification of flowsheet, manufacturing cost of enhancing productivity, reduce and core used.
The technical solution adopted for the present invention to solve the technical problems is: a kind of anhydrous vexed hole single cylinder diesel casting process of cylinder cap, has following steps: 1, make upper die and lower die and core, and at the coating of the low gas forming amount of core outer surface; 2, be produced on the stud that center has steam vent, stud is arranged on plane position of centre of gravity on core, stud the latter half is placed in core, the steam vent at stud center and core through to discharge gas in core; 3, core bottom surface arranges water channel pin, and in core, installs the exhaust needle for being vented on water channel pin; 4, core is arranged in counterdie, and close patrix, and patrix inner surface to ride on stud in plane; 5, to be cast in the upper and lower mould after matched moulds molten iron by dead head.
The core that a kind of above-mentioned anhydrous vexed hole single cylinder diesel casting process of cylinder cap is used, there is core body, core body lower plane is provided with water channel pin, water channel pin is provided with the exhaust needle for lower parting line venting, on core body plane position of centre of gravity be provided with make positioning action and in casting solidification process with the stud of foundry goods seam, described stud has upper backup pad, lower supporting plate and the board between upper and lower support plate, between upper backup pad and board, all be connected with between board with lower supporting plate and be connected cylinder, the steam vent offering and be communicated with core body inside is run through from upper backup pad to lower supporting plate, board is embedded in core body to lower supporting plate part.
For improving the amalgamation of stud and foundry goods better, described connection cylinder offers cannelure.
For preventing the inner outwards exhaust of core body, described core body adopts cold core to make, and core outer surface is coated with the dope layer of low gas forming amount.
For improving exhaust effect, described water channel pin has three, and on each water channel pin, correspondence is provided with exhaust needle.
For avoiding stud surface aggregation steam to produce pore, fusion of living is not good, and described stud adopts fusing point to make higher than the ferroalloy of cast iron, and stud surface has tin coating.
The invention has the beneficial effects as follows: the present invention adopts stud to replace the positioning function in the vexed hole of original water, manufacturing procedure and the machining period of cylinder cap can be reduced, consequently reduce the investment of the equipment such as machining tool, cutter.By reducing the preliminary preparation of cylinder cap when producing after cancelling the vexed hole of water, eliminating fixture and the vexed spot facing cutter of process water, simplifying technique, improve production efficiency, also saving a large amount of time and the input of fund.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structural representation of core of the present invention.
Fig. 2 is the structural representation of stud of the present invention.
In figure, 1. core body 2. water channel pin 3. exhaust needle 4. stud 41. upper backup pad 42. lower supporting plate 43. boards 44. connect cylinder 45. steam vent 46. cannelure
Detailed description of the invention
The present invention is further illustrated with preferred embodiment by reference to the accompanying drawings now.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
A kind of anhydrous vexed hole single cylinder diesel casting process of cylinder cap, has following steps: 1, make upper die and lower die and core, and at the coating of the low gas forming amount of core outer surface; 2, the center that is produced on has the stud 4 of steam vent, stud 4 is arranged on plane position of centre of gravity on core, and stud 4 the latter half is placed in core, and the steam vent 45 at stud 4 center is through to discharge sand core internal gas with core; 3, core bottom surface arranges water channel pin 2, and in core, installs the exhaust needle 3 for being vented on water channel pin 2; 4, core is arranged in counterdie, and close patrix, and patrix inner surface to ride on stud 4 in plane; 5, to be cast in the upper and lower mould after matched moulds molten iron by dead head.
As shown in Figure 1 and Figure 2, the core that a kind of above-mentioned anhydrous vexed hole single cylinder diesel casting process of cylinder cap is used, there is core body 1, described core body 1 adopts cold core to make, core body 1 lower plane is provided with three water channel pin 2, the corresponding exhaust needle 3 be provided with for lower parting line venting on each water channel pin 2, on core body 1 plane position of centre of gravity be provided with make positioning action and in casting solidification process with the stud 4 of foundry goods seam, core body 1 outer surface is coated with the dope layer preventing the inner outwards low gas forming amount of exhaust of core body 1.
Described stud 4 comprises upper backup pad 41, lower supporting plate 42 and the board 43 between upper and lower gripper shoe 41,42, all be connected with between upper backup pad 41 with board 43, between board 43 with lower supporting plate 42 and be connected cylinder 44, connect on cylinder 44 and offer cannelure 46, the steam vent 45 offering and be communicated with core body 1 inside is run through from upper backup pad 41 to lower supporting plate 42, core body 1 internal gas can be discharged smoothly from steam vent 45, when wherein installing, board 43 to lower supporting plate 42 part is embedded in core body 1.
Described stud 4 adopts fusing point to make higher than the ferroalloy of cast iron, ferroalloy materials makes before molten metal does not solidify, and stud 4 has enough intensity, is unlikely to fusing too early and loses supporting role, and in casting solidification process, stud 4 again can preferably with foundry goods seam; In the zinc-plated process again after rust cleaning, oil removal treatment of stud 4 surface, form one deck tin coating on stud 4 surface thus, in order to avoid stud 4 surface aggregation aqueous vapor produces pore, or lack of fusion.Wherein upper and lower gripper shoe 41,42 adopts comparatively light sheet to make, and adds that board 43 and cannelure 46 act on, can be fused in foundry goods by stud 4 better.
For the exhaust of core body 1, because core body 1 is wrapped up by coating, its internal gas can only discharge from the steam vent of water channel pin 2 bottom, stud 4.Adopt the core body 1 that cold core makes, can reduce the capacity of core body 1, counterdie internal gas is then discharged by three exhaust needles 3.
Owing to eliminating the vexed hole of water, core sand cannot shake out from the vexed hole of water, can only shake out from water channel pin 2, and in order to ensure the cleannes of core cavity, core sand have employed the good core sand of collapsibility, and under the high temperature conditions, its intensity declines rapidly, shakes out more for convenience.
The present invention adopts stud 4 to replace the positioning action in the vexed hole of original water, can reduce manufacturing procedure and the machining period of cylinder cap, consequently reduce the investment of the equipment such as machining tool, cutter.By reducing the preliminary preparation of cylinder cap when producing after cancelling the vexed hole of water, eliminating fixture and the vexed spot facing cutter of process water, simplifying technique, improve production efficiency, also saving a large amount of time and the input of fund.
Above-described embodiment is only for illustrating technical conceive of the present invention and feature; its object is to person skilled in the art can be understood content of the present invention and be implemented; can not limit the scope of the invention with this; all equivalences done according to Spirit Essence of the present invention change or modify, and all should be encompassed in protection scope of the present invention.
Claims (6)
1. an anhydrous vexed hole single cylinder diesel casting process of cylinder cap, is characterized in that: have following steps: 1, make upper die and lower die and core, and at the coating of the low gas forming amount of core outer surface; 2, the center that is produced on has the stud (4) of steam vent, stud (4) is arranged on plane position of centre of gravity on core, stud (4) the latter half is placed in core, and the steam vent (45) at stud (4) center is through to discharge sand core internal gas with core; 3, core bottom surface arranges water channel pin (2), and on water channel pin (2), install the exhaust needle (3) for being vented in core; 4, core is arranged in counterdie, and close patrix, and patrix inner surface rides in the upper plane of stud (4); 5, to be cast in the upper and lower mould after matched moulds molten iron by dead head.
2. anhydrous vexed hole single cylinder diesel casting process of cylinder cap core used described in a claim 1, there is core body (1), it is characterized in that: described core body (1) lower plane is provided with water channel pin (2), water channel pin (2) is provided with the exhaust needle (3) for lower parting line venting, the upper plane position of centre of gravity of core body (1) be provided with make positioning action and in casting solidification process with the stud (4) of foundry goods seam, described stud (4) has upper backup pad (41), lower supporting plate (42) and being positioned at, lower supporting plate (41), (42) board (43) between, between upper backup pad (41) and board (43), all be connected with between board (43) with lower supporting plate (42) and be connected cylinder (44), the steam vent (45) offering and be communicated with core body (1) inside is run through from upper backup pad (41) to lower supporting plate (42), board (43) is embedded in core body (1) to lower supporting plate (42) part.
3. core according to claim 2, is characterized in that: described connection cylinder (44) offers cannelure (46).
4. core according to claim 2, is characterized in that: described core body (1) adopts cold core to make, and core body (1) outer surface is coated with the dope layer preventing the inner outwards low gas forming amount of exhaust of core body (1).
5. core according to claim 2, is characterized in that: described water channel pin (2) has three, and the upper correspondence of each water channel pin (2) is provided with exhaust needle (3).
6. core according to claim 2, is characterized in that: described stud (4) adopts fusing point to make higher than the ferroalloy of cast iron, and stud (4) surface has tin coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410579226.1A CN104325087A (en) | 2014-10-24 | 2014-10-24 | Water suffocating hole-free casting process for cylinder cover of single cylinder diesel engine and sand core for casting process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410579226.1A CN104325087A (en) | 2014-10-24 | 2014-10-24 | Water suffocating hole-free casting process for cylinder cover of single cylinder diesel engine and sand core for casting process |
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| CN104325087A true CN104325087A (en) | 2015-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410579226.1A Pending CN104325087A (en) | 2014-10-24 | 2014-10-24 | Water suffocating hole-free casting process for cylinder cover of single cylinder diesel engine and sand core for casting process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109332597A (en) * | 2018-10-18 | 2019-02-15 | 四川省犍为恒益铝业有限公司 | A kind of the sand core mounting structure and its installation method of automobile-used cabinet |
| CN112517859A (en) * | 2020-11-24 | 2021-03-19 | 太仓史密斯理查森精密制造有限公司 | Environment-friendly anti-discoloration corrosion-resistant tin plating preparation process for chaplet |
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| JPS61249645A (en) * | 1985-04-26 | 1986-11-06 | Mazda Motor Corp | Cylinder head casting mold for low-pressure casting |
| JP2003191050A (en) * | 2001-12-26 | 2003-07-08 | Honda Motor Co Ltd | Sand core for cylinder block and its supporting structure |
| CN201586732U (en) * | 2009-07-30 | 2010-09-22 | 吴克平 | Suspended core structure of water jacket sand core of diesel engine cylinder head |
| CN101927337A (en) * | 2010-07-27 | 2010-12-29 | 重庆福德助友农业机械有限公司 | Technical process for casting cylinder cover and engine body component of diesel engine |
| CN201940542U (en) * | 2010-12-27 | 2011-08-24 | 自贡长征精密铸锻有限公司 | Air discharge device for casting sand core |
| CN102294439A (en) * | 2011-08-19 | 2011-12-28 | 东风汽车股份有限公司 | Special core support for sand box for large engine cylinder body |
| CN102319873A (en) * | 2011-10-10 | 2012-01-18 | 广西玉林玉柴机器配件制造有限公司 | The production method of Iron Mould Coated Sand cast block |
| CN104070135A (en) * | 2014-06-19 | 2014-10-01 | 宁夏共享装备有限公司 | Casting method of sand core oil tube of internal combustion engine |
-
2014
- 2014-10-24 CN CN201410579226.1A patent/CN104325087A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61249645A (en) * | 1985-04-26 | 1986-11-06 | Mazda Motor Corp | Cylinder head casting mold for low-pressure casting |
| JP2003191050A (en) * | 2001-12-26 | 2003-07-08 | Honda Motor Co Ltd | Sand core for cylinder block and its supporting structure |
| CN201586732U (en) * | 2009-07-30 | 2010-09-22 | 吴克平 | Suspended core structure of water jacket sand core of diesel engine cylinder head |
| CN101927337A (en) * | 2010-07-27 | 2010-12-29 | 重庆福德助友农业机械有限公司 | Technical process for casting cylinder cover and engine body component of diesel engine |
| CN201940542U (en) * | 2010-12-27 | 2011-08-24 | 自贡长征精密铸锻有限公司 | Air discharge device for casting sand core |
| CN102294439A (en) * | 2011-08-19 | 2011-12-28 | 东风汽车股份有限公司 | Special core support for sand box for large engine cylinder body |
| CN102319873A (en) * | 2011-10-10 | 2012-01-18 | 广西玉林玉柴机器配件制造有限公司 | The production method of Iron Mould Coated Sand cast block |
| CN104070135A (en) * | 2014-06-19 | 2014-10-01 | 宁夏共享装备有限公司 | Casting method of sand core oil tube of internal combustion engine |
Non-Patent Citations (1)
| Title |
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| 李明等: "《铸钢件生产技术》", 30 April 2013, article "5.芯撑", pages: 211-212 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109332597A (en) * | 2018-10-18 | 2019-02-15 | 四川省犍为恒益铝业有限公司 | A kind of the sand core mounting structure and its installation method of automobile-used cabinet |
| CN109332597B (en) * | 2018-10-18 | 2020-04-28 | 四川省犍为恒益铝业有限公司 | Sand core mounting structure of vehicle box body and mounting method thereof |
| CN112517859A (en) * | 2020-11-24 | 2021-03-19 | 太仓史密斯理查森精密制造有限公司 | Environment-friendly anti-discoloration corrosion-resistant tin plating preparation process for chaplet |
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Application publication date: 20150204 |