CN106077481A - A kind of casting method of cylinder of petrol engine - Google Patents
A kind of casting method of cylinder of petrol engine Download PDFInfo
- Publication number
- CN106077481A CN106077481A CN201610629760.8A CN201610629760A CN106077481A CN 106077481 A CN106077481 A CN 106077481A CN 201610629760 A CN201610629760 A CN 201610629760A CN 106077481 A CN106077481 A CN 106077481A
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- CN
- China
- Prior art keywords
- cylinder
- sandbox
- petrol engine
- casting
- model
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- 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
- B22C9/04—Use of lost patterns
-
- 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
- B22C9/24—Moulds for peculiarly-shaped castings for hollow articles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/08—Shaking, vibrating, or turning of moulds
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Casting Devices For Molds (AREA)
- Mold Materials And Core Materials (AREA)
Abstract
The invention discloses the casting method of a kind of cylinder of petrol engine, comprise the steps: to foam, make, cool down, matched moulds, vibration moulding, pour, pickup and processing etc., the casting method of this cylinder of petrol engine, after using such process, improve the compactness of cast article interior tissue, reduce the disqualification rate of foundry goods simultaneously, reduce entreprise cost, increase economic efficiency, casting quality is good, low cost, precision is high, any surface finish；This technique is also substantially improved working environment, reduces labor strength and reduces energy resource consumption.
Description
Technical field
The present invention relates to cast molding technology field, the casting method of a kind of cylinder of petrol engine.
Background technology
Electromotor is the machine that chemical energy is converted into mechanical energy, and its conversion process is actually the mistake of cycle of operation
Journey, is by the fuel in combustion cylinders the most exactly, produces kinetic energy, the fortune of the piston reciprocating in driving cylinder
Dynamic, thus drive the connecting rod being connected on piston and the crank being connected with connecting rod, make reciprocal circular motion around crankshaft center, and
Output power.Electromotor is made up of cylinder block and cylinder cover two large divisions, is inter-connected via a bolt joint.Engine
Body is one of core component of gasoline engine, and the most employing casting methods prepare, but existing manufacture method is the most complicated,
And the cylinder body yields produced is more low, improves production cost, to this end, propose the casting side of a kind of cylinder of petrol engine
Method.
Summary of the invention
It is an object of the invention to provide the casting method of a kind of cylinder of petrol engine, to solve above-mentioned background technology proposes
Problem.
For achieving the above object, the present invention provides following technical scheme: the casting method of a kind of cylinder of petrol engine, including such as
Lower step:
The first step, foaming, put into foaming machine by appropriate polymethyl methacrylate and foam, and controls temperature at 240-270 DEG C
Between, foamed time controls between 50-70s, and poly methyl methacrylate particle is placed on after having foamed dry, ventilation
Feed bin in carry out ripening；
Second step, making, particles filled in the casing with Engine mould by after ripening, after closed box, make
Shaking casing with high-frequency vibrator, vibration frequency is 150-200HZ, heats casing simultaneously, and heating-up temperature is
300-350 DEG C, make granule reexpand, it is ensured that the inner chamber of Engine mould fills up, make mutually to merge between granule simultaneously,
Form smooth surface；
3rd step, cooling, cool down 2-4h after stopping vibrations and heating and unpack, prepare upper die and lower die；
Upper die and lower die are carried out matched moulds by the 4th step, matched moulds, are placed on model at the aeration-drying of 80-90 DEG C to enter after matched moulds
Row is dried, then by adhesive gluing mode and model heat seal mode by the model combined and cast gate, runner system model
Fit together one model body of formation；
5th step, vibration moulding, be positioned over model body in sandbox and add molding sand, is taken away by the air between sand grains in sandbox,
Make to be in inside the sandbox of sealing negative pressure state, and use vibrator that sandbox is shaken, in this pressure reduction and the effect of vibrations
Under, in sandbox, loose flow pattern sand becomes the casting mold that consolidation is hard, and the compression with sufficiently high opposing liquid metal effect is strong
Degree, shear strength, maintain casting mold casting cycle not disintegration；
6th step, pour, cast molding under suction function, use low-frequency oscillation machine that sandbox is shaken when cast, shake
Dynamic frequency is maintained between 30-35HZ, waters after rear casting mold vacuum maintains 7-10 minute and stops, and pouring temperature is than the temperature of sand casting
Spend high 50-60 DEG C；
7th step, pickup, to be cast complete after, cooling 2-4h after mould turnover take out cylinder of petrol engine foundry goods；
8th step, processing, measure the data everywhere of cylinder of petrol engine foundry goods, then polish according to data and process so that
Each size of foundry goods more conforms to requirement.
Preferably, described vibrations and heat time heating time keep synchronizing, and vibrations and heat time heating time are between 1.5-2h.
Preferably, after described model body composition, using the method soaked to carry out surface coating paint, paint thickness is at 1-
Between 2mm, and carry out air-drying process at 40-45 DEG C.
Compared with prior art, the invention has the beneficial effects as follows: the casting method of this cylinder of petrol engine, use such work
After process, improve the compactness of cast article interior tissue, reduce the disqualification rate of foundry goods simultaneously, reduce entreprise cost,
Increasing economic efficiency, casting quality is good, low cost, and precision is high, any surface finish；This technique is also substantially improved working environment, reduces
Labor strength reduces energy resource consumption.
Detailed description of the invention
Below in conjunction with illustrating in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is carried out clearly
Chu, it is fully described by, it is clear that described embodiment is only a part of embodiment of the present invention rather than whole embodiments.
Based on the embodiment in the present invention, it is all that those of ordinary skill in the art are obtained under not making creative work premise
Other embodiments, broadly fall into the scope of protection of the invention.
Embodiment one
The casting method of a kind of cylinder of petrol engine, comprises the steps:
The first step, foaming, put into foaming machine by appropriate polymethyl methacrylate and foam, and control temperature, at 241 DEG C, foams
Time controls at 51s, carries out ripe in poly methyl methacrylate particle is placed on after having foamed feed bin dry, that ventilate
Change；
Second step, making, particles filled in the casing with Engine mould by after ripening, after closed box, make
Shaking casing with high-frequency vibrator, vibration frequency is 151HZ, heats casing simultaneously, and heating-up temperature is 302
DEG C, make granule reexpand, it is ensured that the inner chamber of Engine mould fills up, make mutually to merge between granule simultaneously, form light
Sliding surface；
3rd step, cooling, cool down 3.5h after stopping vibrations and heating and unpack, prepare upper die and lower die；
Upper die and lower die are carried out matched moulds by the 4th step, matched moulds, be placed on by model at the aeration-drying of 81 DEG C and do after matched moulds
Dry, then by adhesive gluing mode and model heat seal mode, the model combined is assembled with cast gate, runner system model
Form a model body together；
5th step, vibration moulding, be positioned over model body in sandbox and add molding sand, is taken away by the air between sand grains in sandbox,
Make to be in inside the sandbox of sealing negative pressure state, and use vibrator that sandbox is shaken, in this pressure reduction and the effect of vibrations
Under, in sandbox, loose flow pattern sand becomes the casting mold that consolidation is hard, and the compression with sufficiently high opposing liquid metal effect is strong
Degree, shear strength, maintain casting mold casting cycle not disintegration；
6th step, pour, cast molding under suction function, use low-frequency oscillation machine that sandbox is shaken when cast, shake
Dynamic frequency is maintained between 32HZ, waters after rear casting mold vacuum maintains 8 minutes and stops, and pouring temperature is higher than the temperature of sand casting by 52
℃；
7th step, pickup, to be cast complete after, cooling 3h mould turnover take out cylinder of petrol engine foundry goods；
8th step, processing, measure the data everywhere of cylinder of petrol engine foundry goods, then polish according to data and process so that
Each size of foundry goods more conforms to requirement.
Embodiment two
The casting method of a kind of cylinder of petrol engine, comprises the steps:
The first step, foaming, put into foaming machine by appropriate polymethyl methacrylate and foam, control temperature between 260 DEG C,
Foamed time controls between 66s, is placed on by poly methyl methacrylate particle in feed bin dry, that ventilate after having foamed
Carry out ripening；
Second step, making, particles filled in the casing with Engine mould by after ripening, after closed box, make
Shaking casing with high-frequency vibrator, vibration frequency is 160HZ, heats casing simultaneously, and heating-up temperature is 350
DEG C, make granule reexpand, it is ensured that the inner chamber of Engine mould fills up, make mutually to merge between granule simultaneously, form light
Sliding surface；
3rd step, cooling, cool down 3.2h after stopping vibrations and heating and unpack, prepare upper die and lower die；
Upper die and lower die are carried out matched moulds by the 4th step, matched moulds, be placed on by model at the aeration-drying of 88 DEG C and do after matched moulds
Dry, then by adhesive gluing mode and model heat seal mode, the model combined is assembled with cast gate, runner system model
Form a model body together；
5th step, vibration moulding, be positioned over model body in sandbox and add molding sand, is taken away by the air between sand grains in sandbox,
Make to be in inside the sandbox of sealing negative pressure state, and use vibrator that sandbox is shaken, in this pressure reduction and the effect of vibrations
Under, in sandbox, loose flow pattern sand becomes the casting mold that consolidation is hard, and the compression with sufficiently high opposing liquid metal effect is strong
Degree, shear strength, maintain casting mold casting cycle not disintegration；
6th step, pour, cast molding under suction function, use low-frequency oscillation machine that sandbox is shaken when cast, shake
Dynamic frequency is maintained between 34HZ, waters after rear casting mold vacuum maintains 9 minutes and stops, and pouring temperature is higher than the temperature of sand casting by 56
℃；
7th step, pickup, to be cast complete after, cooling 4h mould turnover take out cylinder of petrol engine foundry goods；
8th step, processing, measure the data everywhere of cylinder of petrol engine foundry goods, then polish according to data and process so that
Each size of foundry goods more conforms to requirement.
Although an embodiment of the present invention has been shown and described, for the ordinary skill in the art, permissible
Understand and these embodiments can be carried out multiple change without departing from the principles and spirit of the present invention, revise, replace
And modification, the scope of the present invention be defined by the appended.
Claims (3)
1. the casting method of a cylinder of petrol engine, it is characterised in that: comprise the steps:
The first step, foaming, put into foaming machine by appropriate polymethyl methacrylate and foam, and controls temperature at 240-270 DEG C
Between, foamed time controls between 50-70s, and poly methyl methacrylate particle is placed on after having foamed dry, ventilation
Feed bin in carry out ripening；
Second step, making, particles filled in the casing with Engine mould by after ripening, after closed box, make
Shaking casing with high-frequency vibrator, vibration frequency is 150-200HZ, heats casing simultaneously, and heating-up temperature is
300-350 DEG C, make granule reexpand, it is ensured that the inner chamber of Engine mould fills up, make mutually to merge between granule simultaneously,
Form smooth surface；
3rd step, cooling, cool down 2-4h after stopping vibrations and heating and unpack, prepare upper die and lower die；
Upper die and lower die are carried out matched moulds by the 4th step, matched moulds, are placed on model at the aeration-drying of 80-90 DEG C to enter after matched moulds
Row is dried, then by adhesive gluing mode and model heat seal mode by the model combined and cast gate, runner system model
Fit together one model body of formation；
5th step, vibration moulding, be positioned over model body in sandbox and add molding sand, is taken away by the air between sand grains in sandbox,
Make to be in inside the sandbox of sealing negative pressure state, and use vibrator that sandbox is shaken, in this pressure reduction and the effect of vibrations
Under, in sandbox, loose flow pattern sand becomes the casting mold that consolidation is hard, and the compression with sufficiently high opposing liquid metal effect is strong
Degree, shear strength, maintain casting mold casting cycle not disintegration；
6th step, pour, cast molding under suction function, use low-frequency oscillation machine that sandbox is shaken when cast, shake
Dynamic frequency is maintained between 30-35HZ, waters after rear casting mold vacuum maintains 7-10 minute and stops, and pouring temperature is than the temperature of sand casting
Spend high 50-60 DEG C；
7th step, pickup, to be cast complete after, cooling 2-4h after mould turnover take out cylinder of petrol engine foundry goods；
8th step, processing, measure the data everywhere of cylinder of petrol engine foundry goods, then polish according to data and process so that
Each size of foundry goods more conforms to requirement.
The casting method of a kind of cylinder of petrol engine the most according to claim 1, it is characterised in that: when described vibrations and heating
Between keep synchronize, vibrations and heat time heating time between 1.5-2h.
The casting method of a kind of cylinder of petrol engine the most according to claim 1, it is characterised in that: described model body forms
After, use the method soaked to carry out surface coating paint, paint thickness is between 1-2mm, and carries out air-drying place at 40-45 DEG C
Reason.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610629760.8A CN106077481A (en) | 2016-08-04 | 2016-08-04 | A kind of casting method of cylinder of petrol engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610629760.8A CN106077481A (en) | 2016-08-04 | 2016-08-04 | A kind of casting method of cylinder of petrol engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106077481A true CN106077481A (en) | 2016-11-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610629760.8A Pending CN106077481A (en) | 2016-08-04 | 2016-08-04 | A kind of casting method of cylinder of petrol engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109909449A (en) * | 2019-04-19 | 2019-06-21 | 陈忠响 | A kind of disappearance mould production method of cylinder sleeve of engine |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012135803A (en) * | 2010-12-27 | 2012-07-19 | Kimura Chuzosho:Kk | Composite structure, and mold and casting method using the structure |
| CN103212668A (en) * | 2012-01-18 | 2013-07-24 | 浙江派尼尔机电有限公司 | Method for manufacturing outboard engine cylinder |
| CN104259444A (en) * | 2014-09-05 | 2015-01-07 | 安徽省宁国市华达耐磨材料有限公司 | Technique method for sand casting vibration pouring |
| CN104874740A (en) * | 2015-06-29 | 2015-09-02 | 绵阳市万欣测控技术有限公司 | Environment-friendly manufacturing process of engine oil pump body |
| CN105618680A (en) * | 2016-01-22 | 2016-06-01 | 常州市常协柴油机机体有限公司 | Full mold casting technique for diesel engine cylinder body |
-
2016
- 2016-08-04 CN CN201610629760.8A patent/CN106077481A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2012135803A (en) * | 2010-12-27 | 2012-07-19 | Kimura Chuzosho:Kk | Composite structure, and mold and casting method using the structure |
| CN103212668A (en) * | 2012-01-18 | 2013-07-24 | 浙江派尼尔机电有限公司 | Method for manufacturing outboard engine cylinder |
| CN104259444A (en) * | 2014-09-05 | 2015-01-07 | 安徽省宁国市华达耐磨材料有限公司 | Technique method for sand casting vibration pouring |
| CN104874740A (en) * | 2015-06-29 | 2015-09-02 | 绵阳市万欣测控技术有限公司 | Environment-friendly manufacturing process of engine oil pump body |
| CN105618680A (en) * | 2016-01-22 | 2016-06-01 | 常州市常协柴油机机体有限公司 | Full mold casting technique for diesel engine cylinder body |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109909449A (en) * | 2019-04-19 | 2019-06-21 | 陈忠响 | A kind of disappearance mould production method of cylinder sleeve of engine |
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20161109 |
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| RJ01 | Rejection of invention patent application after publication |