CN102310162A - Novel technology for casting engine cylinder body by lost foam - Google Patents
Novel technology for casting engine cylinder body by lost foam Download PDFInfo
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- CN102310162A CN102310162A CN201110278679A CN201110278679A CN102310162A CN 102310162 A CN102310162 A CN 102310162A CN 201110278679 A CN201110278679 A CN 201110278679A CN 201110278679 A CN201110278679 A CN 201110278679A CN 102310162 A CN102310162 A CN 102310162A
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Abstract
The invention discloses a novel technology for casting an engine cylinder body by lost foam, and relates to the field of casting technologies. The novel technology is characterized by comprising the following steps of carrying out three-dimensional modeling by three-dimensional software, slitting the three-dimensional model obtained by the previous step into multiple model sheets, preparing molds for preparation of the model sheets, pouring expandable foam beads into the molds, carrying out heating and cooling processes to obtain lost foam model sheets of the engine cylinder body, drying the lost foam model sheets, bonding the dried lost foam model sheets into an integral body according to requirements, bonding a casting system on the bottom of the integral body to obtain a lost foam model, carrying out dip-coating treatment on the surface of the lost foam model by specialized paint 1 to 3 times, putting the lost foam model coated with the specialized paint into a drying room to carry out drying treatment, putting the dried lost foam model into a three-dimensional vibration sand box, adding gradually dry sand into the three-dimensional vibration sand box, covering a film on the surface of the three-dimensional vibration sand box to sealing the three-dimensional vibration sand box, pouring melt obtained by a smelting process into the casting system so that the lost foam model is melted and the melt occupies a space occupied originally by the lost foam model, and cooling the melt to solidification to obtain an engine cylinder body casting. The novel technology improves a qualified rate, saves resources and reduces a cost for enterprises.
Description
Technical field
The present invention relates to casting technology field, be specifically related to a kind of novel process with the lost foam casting engine cylinder-body.
Background technology
Now roughly be divided into following step with the lost foam casting engine cylinder-body; At first produce each matrix of body with disappearance mould mould; Again that each matrix is bonding as a whole, make it to become the disappearance mould model of cylinder body, model is put into cast after sandbox adds sand ram-jolt then.This technology is from sculpting method, because the restriction of direction of being cast, it is not in place to make the die cavity of internal body add sand; Or add less than sand, so that all adopt the method that adds core in addition, so just caused the waste raw material; Behind the foundry goods outlet; Scab is serious, causes later stage cleaning work amount big, and labor strength is high.From pouring type, all adopt teeming or side to annotate, these two kinds of pouring types very easily produce a series of defectives such as volume slag, slag pore, misrun, crush, cause cylinder body to scrap because of casting flaw.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of feasible more economically novel process with the lost foam casting engine cylinder-body.
Technical problem to be solved by this invention adopts following technical scheme to realize,
A kind of novel process with the lost foam casting engine cylinder-body is characterized in that: described processing step does,
1. after at first treating casting cylinder body carries out three-dimensional modeling,, the three-dimensional modeling branch is cut to some matrixs and produces the mould of each matrix of production according to features of shape and the casting technique demand of waiting to cast cylinder body with three-dimensional software;
2. make in 1. to step and inject the expandability foam beads in the good mould, after operations such as heating, cooling, obtained the disappearance mould matrix of cylinder body, it is to carry out dried in 60 ℃～70 ℃ the drying room that disappearance mould matrix is sent into temperature;
3. with step 2. in the disappearance mould matrix of oven dry bonding on request as a whole, and in the bottom bonding top casting system, promptly obtained the disappearance mould model of cylinder body;
4. soak at disappearance mould model surface and hang special coating 1～3 road, make thickness of coating layer reach 0.5～0.6mm, send into temperature again and be 50 ℃～60 ℃ drying room inner drying and handle;
5. the 4. middle dry good disappearance mould model of step is placed in the three-dimensional vibrations sandbox; And an end that makes disappearance mould model is a little more than the other end; After adding dry sand to certain altitude several times and reaching the regulation degree of packing,, make sandbox form closed at the surface coverage thin film;
6. connect vacuum system, when the negative pressure in the sandbox during at 0.035Mpa, the solution of handling melting well injects in the running gate system of disappearance mould model, and disappearance mould model is melted, and the space is replaced by solution, and a small amount of foreign material that disappearance mould model produces are inhaled in the dry sand;
7. after treating the solution cooled and solidified, take out foundry goods and cleaning, can obtain the engine cylinder-body foundry goods.
The invention has the beneficial effects as follows:
1, the present invention adopts three-dimensional software that engine cylinder-body is done the design in early stage, and the design of the mould matrix that respectively disappears is more put in place, and is more reasonable, more meets the casting technique demand; Thereby the cylinder body size that makes casting come out is more accurate, and it is littler to reserve processing capacity, more can meet the specification requirement of cylinder body.
2, since the present invention when moulding, an end that makes model is a little more than the other end, and the interior back-up sand of die cavity of model is more put in place; Replaced the use of core in the old technology; Save time and cost, significantly reduced the cleaning work amount in later stage, the labour intensity of reduction.
What 3, pouring procedure of the present invention adopted is bottom filling, the elephant skin that foundry goods is prone in the forming process of old technology, and the slag pore, misrun, a series of defectives such as crush have obtained solution, have improved finished casting rate.In sum, the present invention has improved the qualification rate of foundry goods, has saved resource, has reduced the cost expenditure of enterprise, has improved working environment, and the present invention provides more economically a kind of, feasible technical scheme for the casting of engine cylinder-body thus.
Description of drawings
Fig. 1 is the present invention's mould matrix bonding sketch map that disappears;
Fig. 2 is moulding casting sketch map of the present invention.
The specific embodiment
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.
Embodiment 1
Like Fig. 1, shown in Figure 2, a kind of novel process with the lost foam casting engine cylinder-body, its concrete steps are following:
1. according to drawing and casting requirement, after treating casting cylinder body carries out three-dimensional modeling with three-dimensional software,, the three-dimensional modeling branch is cut to some matrixs and produces the mould of each matrix of production according to features of shape and the casting technique demand of waiting to cast cylinder body;
2. make in 1. to step and inject the expandability foam beads in the good mould, after operations such as heating, cooling, obtained the disappearance mould matrix of cylinder body, it is to carry out dried in 60 ℃～70 ℃ the drying room that disappearance mould matrix is sent into temperature;
3. with step 2. in the disappearance mould matrix of oven dry bonding on request as a whole, and in the bottom bonding top casting system, promptly obtained the disappearance mould model 1 of cylinder body;
4. soak on disappearance mould model 1 surface and hang special coating 1～3 road, make thickness of coating layer reach 0.5～0.6mm, send into temperature again and be 50 ℃～60 ℃ drying room inner drying and handle;
5. the 4. middle dry good disappearance mould model 1 of step is placed in the three-dimensional vibrations sandbox 2; And an end that makes disappearance mould model 1 is a little more than the other end; After adding dry sand 4 to certain altitude several times and reaching the regulation degree of packing,, make sandbox 2 form closed at surface coverage thin film 7;
6. connect vacuum through vacuum system interface 5,, make dry sand 4 can not taken away by vacuum system owing to be provided with dry sand screen pack 6 at vacuum system interface 5 places; When negative pressure is the 0.035Mpa left and right sides in the sandbox 2; In the running gate system 8 of disappearance mould model 1, inject the solution that melting is handled well, and pressurize a period of time, disappearance mould model 1 is melted; The space is replaced by solution, and the small amount of matter that disappearance mould model 1 produces is sucked in the dry sand 4 by vacuum;
7. after treating the solution cooled and solidified, unpack to take out foundry goods, treat that foundry goods is cooled to room temperature after, coating comes off automatically, after simple cleaning, has promptly obtained the engine cylinder-body foundry goods of casting with novel lost foam casting process.
More than show and described basic principle of the present invention and principal character and advantage of the present invention.The technical staff of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the specification just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (1)
1. with the novel process of lost foam casting engine cylinder-body, it is characterized in that: described processing step does,
A. after at first treating casting cylinder body carries out three-dimensional modeling,, the three-dimensional modeling branch is cut to some matrixs and produces the mould of each matrix of production according to features of shape and the casting technique demand of waiting to cast cylinder body with three-dimensional software;
B. in step a, make and inject the expandability foam beads in the good mould, through heating, obtained behind the refrigerating work procedure disappearance mould matrix of cylinder body, it is to carry out dried in 60 ℃～70 ℃ the drying room that disappearance mould matrix is sent into temperature;
C. the disappearance mould matrix of drying among the step b is bonding on request as a whole, and in the bottom bonding top casting system, promptly obtained the disappearance mould model of cylinder body;
D. soak at disappearance mould model surface and hang special coating 1～3 road, make thickness of coating layer reach 0.5～0.6mm, send into temperature again and be 50 ℃～60 ℃ drying room inner drying and handle;
E. dry good disappearance mould model in the steps d is placed in the three-dimensional vibrations sandbox; And an end that makes disappearance mould model is a little more than the other end; After adding dry sand to certain altitude several times and reaching the regulation degree of packing,, make sandbox form closed at the surface coverage thin film;
F. connect vacuum system, when the negative pressure in the sandbox during at 0.035Mpa, the solution of handling melting well injects in the running gate system of disappearance mould model, and disappearance mould model is melted, and the space is replaced by solution, and a small amount of foreign material that disappearance mould model produces are inhaled in the dry sand;
G. after treating the solution cooled and solidified, take out foundry goods and cleaning, can obtain the engine cylinder-body foundry goods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110278679A CN102310162A (en) | 2011-09-19 | 2011-09-19 | Novel technology for casting engine cylinder body by lost foam |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110278679A CN102310162A (en) | 2011-09-19 | 2011-09-19 | Novel technology for casting engine cylinder body by lost foam |
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| CN102310162A true CN102310162A (en) | 2012-01-11 |
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| CN201110278679A Pending CN102310162A (en) | 2011-09-19 | 2011-09-19 | Novel technology for casting engine cylinder body by lost foam |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102744390A (en) * | 2012-07-27 | 2012-10-24 | 湖南三星机床工具有限公司 | Vacuum lost foam casting process |
| CN103008548A (en) * | 2012-12-26 | 2013-04-03 | 安岳县金龙机械制造有限公司 | Lost foam casting method |
| CN103212669A (en) * | 2012-01-20 | 2013-07-24 | 天津市瑞普天晟汽车零部件制造有限公司 | Lost-foam casting model of engine cylinder body and casting method |
| CN103372630A (en) * | 2012-04-25 | 2013-10-30 | 河北瑞丰动力缸体有限公司 | Evanescent mode production process of engine cylinder body |
| CN103736931A (en) * | 2014-01-29 | 2014-04-23 | 广西玉柴机器股份有限公司 | Casting mould of engine body of large in-line diesel engine |
| CN104057029A (en) * | 2014-07-03 | 2014-09-24 | 宁德东升宏宇科技有限公司 | Method for manufacturing blast-furnace tuyere |
| CN107755632A (en) * | 2016-08-18 | 2018-03-06 | 荣泽发动机零部件（常熟）有限公司 | The method that manufacture has the high strength light alloy product of hot cracking tendency |
| CN108080565A (en) * | 2018-01-30 | 2018-05-29 | 宁夏苏宁新能源设备有限公司 | Three axis engraving machines carve baffle lost foam pattern split system |
| CN110918895A (en) * | 2019-12-11 | 2020-03-27 | 黄波 | Low-cost vertical casting system of engine cylinder block |
| CN111922284A (en) * | 2020-07-29 | 2020-11-13 | 陶安 | Duplex evaporative die casting aluminum process |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103212669A (en) * | 2012-01-20 | 2013-07-24 | 天津市瑞普天晟汽车零部件制造有限公司 | Lost-foam casting model of engine cylinder body and casting method |
| CN103372630B (en) * | 2012-04-25 | 2017-07-04 | 河北瑞丰动力缸体有限公司 | A kind of evaporative pattern production technology of engine cylinder-body |
| CN103372630A (en) * | 2012-04-25 | 2013-10-30 | 河北瑞丰动力缸体有限公司 | Evanescent mode production process of engine cylinder body |
| CN102744390B (en) * | 2012-07-27 | 2014-01-15 | 湖南三星机床工具有限公司 | Vacuum lost foam casting process |
| CN102744390A (en) * | 2012-07-27 | 2012-10-24 | 湖南三星机床工具有限公司 | Vacuum lost foam casting process |
| CN103008548A (en) * | 2012-12-26 | 2013-04-03 | 安岳县金龙机械制造有限公司 | Lost foam casting method |
| CN103736931A (en) * | 2014-01-29 | 2014-04-23 | 广西玉柴机器股份有限公司 | Casting mould of engine body of large in-line diesel engine |
| CN104057029A (en) * | 2014-07-03 | 2014-09-24 | 宁德东升宏宇科技有限公司 | Method for manufacturing blast-furnace tuyere |
| CN107755632A (en) * | 2016-08-18 | 2018-03-06 | 荣泽发动机零部件（常熟）有限公司 | The method that manufacture has the high strength light alloy product of hot cracking tendency |
| CN108080565A (en) * | 2018-01-30 | 2018-05-29 | 宁夏苏宁新能源设备有限公司 | Three axis engraving machines carve baffle lost foam pattern split system |
| CN108080565B (en) * | 2018-01-30 | 2023-10-17 | 宁夏苏宁新能源设备有限公司 | Triaxial engraver sculpture baffle ledge lost foam model split system |
| CN110918895A (en) * | 2019-12-11 | 2020-03-27 | 黄波 | Low-cost vertical casting system of engine cylinder block |
| CN111922284A (en) * | 2020-07-29 | 2020-11-13 | 陶安 | Duplex evaporative die casting aluminum process |
| CN111922284B (en) * | 2020-07-29 | 2022-03-22 | 明光市明泰五金制品有限公司 | Duplex evaporative die casting aluminum process |
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Application publication date: 20120111 |