CN104668461A - Engine dry cylinder liner machine body foam model - Google Patents
Engine dry cylinder liner machine body foam model Download PDFInfo
- Publication number
- CN104668461A CN104668461A CN201310609738.3A CN201310609738A CN104668461A CN 104668461 A CN104668461 A CN 104668461A CN 201310609738 A CN201310609738 A CN 201310609738A CN 104668461 A CN104668461 A CN 104668461A
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- CN
- China
- Prior art keywords
- water jacket
- bubbles model
- sand
- parallel portion
- sand core
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- 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.)
- Pending
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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
- B22C9/04—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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Molds, Cores, And Manufacturing Methods Thereof (AREA)
Abstract
The invention discloses an engine dry cylinder liner machine body foam model. A water jacket sand core is arranged at a water jacket part between an engine cylinder liner and a machine body; and multiple fixed support clamps are arranged in a machine body foam model at the outer side of the water jacket sand core. When a dry cylinder liner machine body of an engine is cast by an evanescent mode, the fixed support clamps are inlaid into the foam model, so that the floating phenomenon of the sand core in casting can be effectively prevented, and the pass percent of products is improved.
Description
Technical field
The present invention relates to a kind of engine dry cylinder body bubbles model.
Background technology
Lost foam casting is also called dry sand vacuum full mould casting, is referred to as EPC abroad, is current one of state-of-the-art casting technique in the world, is described as once " revolution " in casting history, is referred to as 21 century Green foundry both at home and abroad.This method is first made bubble by technological requirement and is moulded bubbles model, be coated with special high-temperature resistant coating, after drying, be placed in special sandbox, dry sand is inserted again by technological requirement, utilize three-dimensional vibrating consolidation, vacuumize casting of molten metal under state, now bubbles model gasification disappears, molten metal displacement bubbles model, copying and mould the same foundry goods of bubbles model with steeping. its technological process comprises: make bubble and mould bubbles model-composite pouring system-bubbles model surface special fireproof coating of spary and to dry-be placed in by special interlayer sandbox on three-dimensional vibrating workbench-insert bed load (drystone sand) jolt ramming, strike off-the bubbles model type of oven dry is put on bed load, dry sand is filled up by technological requirement, numerical control vibration appropriate time, then case mouth-use covered rearing with plastic film case mouth is struck off, put cup, start vacuum system, dry sand fastening shaping after, pour into a mould, bubbles model type disappears, molten metal replaces its position-release vacuum, by technique mould turnover after foundry goods condensation, foundry goods is taken out from loose quartz sand.
When lost foam casting process produces dry cylinder body, cause back-up sand unreal thus the problem causing molten metal to be revealed for anti-water-baffling sleeve partial gap is limited, adopt the technique that evaporative pattern combines with core, effectively can prevent the molten metal leakage problem caused because back-up sand is unreal, but when pouring into a mould, core often produces drift phenomenon when running into molten metal, and this can cause casting structure size accurate not, has had a strong impact on the quality of product.
Summary of the invention
In order to solve the problem, the invention provides a kind of dry cylinder body bubbles model adding fixed support card between sand core of water jacket and shell.
To achieve these goals, the technical solution of employing is in the present invention:
A kind of engine dry cylinder body bubbles model, water jacket part between cylinder sleeve of engine and body is provided with sand core of water jacket, it is characterized in that, described sand core of water jacket is made up in coated sand core shooting machine of precoated sand, its shape, size all match with water jacket part, and its both sides are provided with location core print; Several fixed support cards are provided with in body bubbles model outside sand core of water jacket place, described fixed support card comprises a vertical component effect, outer parallel portion, interior parallel portion, two parallel portion are separately fixed at the two ends of vertical component effect, this fixed support card is embedded in bubbles model, and the cross section of described outer parallel portion and interior parallel portion is circular or triangle or rectangle.
Further, described bubbles model is made up of styrofoam material.
Further, it is characterized in that, bubbles model is put into sandbox and after inserting dry sand, outer parallel portion contacts with the dry sand outside body, and interior parallel portion contacts with the sand core of water jacket inside body.
The beneficial effect that the present invention can produce:
(1) when lost foam casting dry cylinder body, fixed support card is bumped in bubbles model, when can effectively prevent from pouring into a mould there is the phenomenon of drift in core, and effectively solve the dimensional accuracy problem of sand core of water jacket with shell, thus greatly improve the qualification rate of product;
(2) select the material of fixed support card identical with the material of evaporative pattern casting finished products, thus after casting complete, fixed support card is stayed in evaporative pattern foundry goods to become to be integrated, and need not clear up, effectively simple to operate.
Accompanying drawing explanation
Accompanying drawing 1 is the structural representation of the water jacket part of bubbles model.
Accompanying drawing 2 is the structural representation of fixed support card.
Wherein: 1. sand core of water jacket; 21. outer parallel portion; 22. vertical component effects; Parallel portion in 23.; 3. bubbles model; 4. locate core print; 5. dry sand.
Detailed description of the invention
Composition graphs 1,2 illustrates present embodiment, and a kind of engine dry cylinder body bubbles model, the water jacket part between cylinder sleeve of engine and body is provided with sand core of water jacket, is provided with several fixed support cards in the body bubbles model 3 outside sand core of water jacket 1 place.Figure 1 shows that the bubbles model of four cylinder engine dry cylinder body water jacket part, the shape of sand core of water jacket 1 and the matching form of water jacket part close.When manufacturing dry cylinder body in Technology of EPC, because the water jacket partial gap between cylinder sleeve and shell is limited, usually cause back-up sand unreal, and cause the molten metal between body and cylinder sleeve to be revealed, cause waste product, and sand core of water jacket 1 of the present invention is arranged on this water jacket part between cylinder sleeve and body, solve because dry sand fills the unreal problem causing waste product, and fixed support card is all arranged in the bubbles model 3 outside sand core of water jacket 1.
Described sand core of water jacket 1 is made up in coated sand core shooting machine of precoated sand, and its shape, size all match with water jacket part.
The both sides of described sand core of water jacket 1 are provided with location core print 4.To sand core of water jacket 1 fixation, sand core of water jacket 1 is fixed on certain position, prevents large displacement.Location core print 4 is also made up of precoated sand, and with sand core of water jacket 1 one, sand core of water jacket 1 is not only positioned at water jacket part by location core print 4, and when after adhesive gasification in sand core of water jacket 1, locates core print 4 and also become sand and flow out from fabrication hole, need not clear up.
Described bubbles model 1 is made up of styrofoam material.
The two ends that described fixed support card comprises a vertical component effect 22, outer parallel portion 21, interior parallel portion 23, two parallel portion are separately fixed at vertical component effect 22, this fixed support card is embedded in bubbles model 3.
The cross section of described outer parallel portion 21 and interior parallel portion 23 is circular or triangle or rectangle.
Bubbles model is put into sandbox and after inserting dry sand, outer parallel portion 21 contacts with the dry sand 5 outside body, and interior parallel portion 23 contacts with the sand core of water jacket 1 inside body.
Described fixed support card, for having ferromagnetic metal material, can be held by magnet.
Body due to dry cylinder body has the built-in hollow water jacket of a watering cycle, for giving engine cooling, therefore this hollow water jacket dry sand when common law back-up sand may fill hardly, namely hollow water jacket cannot be formed according to both shaped of evaporative pattern cast model, causes waste product.In order to solve the unreal waste product caused of back-up sand, the present invention also specially improves on evaporative pattern cast model, first bubbles model is divided into inside and outside two parts from hollow water jacket, interior bubbles model is integrated, the structure of interior bubbles model simulation cylinder sleeve, the inner space 6 of sand core of water jacket 1 can be inserted, be close together closely with the inwall of sand core of water jacket 1, outer bubbles model prolongs bubbles model medium line and is divided into outer bubbles model I, outer bubbles model II two parts, be close together closely with the outer wall of sand core of water jacket 1, each several part adopts conventional adhesive form by interior bubbles model, outer bubbles model I, outer bubbles model II 3 part sticks together, after pouring molten iron, sand core of water jacket 1 becomes the dry sand be scattered, can enter from reserved, delivery port and reserved fabrication hole are poured out, define the hollow jacket space of sand core of water jacket 1 shape, as long as make the shape of sand core of water jacket 1 according to the shape of hollow water jacket, just can solve that back-up sand is unreal causes the problem of waste product.Fabrication hole can spread plug with water blocking when product turnout.
Manufacture the method for above-mentioned engine dry cylinder body bubbles model, in the mould preparing bubbles model, fixed support card is placed in relevant position, holds this fixed support card, then add foamed material and be prepared at mould arranged outside magnet.
The number one_to_one corresponding of described magnet and fixed support card.
Casting in dry cylinder body process with lost foam casting process, this bubbles model is put into sandbox, add dry sand jolt ramming, vacuumize casting of molten metal under state, vacuumize casting of molten metal under state, bubbles model gasification disappears, molten metal displacement bubbles model, now the outer parallel portion 21 of fixed support card contacts dry sand 5, fixed support card is made to withstand dry sand 5, thus the sand core of water jacket contacted with parallel portion in it 23 is fixed, can effectively prevent from being liquid and very short time period inner water sleeve core 1 that sand core of water jacket 1 does not also disintegrate to be impacted by molten metal and drifts about at molten metal.The qualification rate of this kind of mode evaporative pattern cast product is adopted to improve about 90%.
Certainly, above-mentioned explanation is not limitation of the present invention, and the present invention is also not limited in above-mentioned citing, and the change that those skilled in the art make in essential scope of the present invention, remodeling, interpolation or replacement also should belong to protection scope of the present invention.
Claims (3)
1. an engine dry cylinder body bubbles model, water jacket part between cylinder sleeve of engine and body is provided with sand core of water jacket, it is characterized in that, described sand core of water jacket is made up in coated sand core shooting machine of precoated sand, its shape, size all match with water jacket part, and its both sides are provided with location core print; Several fixed support cards are provided with in body bubbles model outside sand core of water jacket place, described fixed support card comprises a vertical component effect, outer parallel portion, interior parallel portion, two parallel portion are separately fixed at the two ends of vertical component effect, this fixed support card is embedded in bubbles model, and the cross section of described outer parallel portion and interior parallel portion is circular or triangle or rectangle.
2. a kind of engine dry cylinder body bubbles model according to claim 1, it is characterized in that, described bubbles model is made up of styrofoam material.
3. a kind of engine dry cylinder body bubbles model according to claim 1, is characterized in that, bubbles model is put into sandbox and after inserting dry sand, outer parallel portion contacts with the dry sand outside body, and interior parallel portion contacts with the sand core of water jacket inside body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310609738.3A CN104668461A (en) | 2013-11-27 | 2013-11-27 | Engine dry cylinder liner machine body foam model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310609738.3A CN104668461A (en) | 2013-11-27 | 2013-11-27 | Engine dry cylinder liner machine body foam model |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104668461A true CN104668461A (en) | 2015-06-03 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310609738.3A Pending CN104668461A (en) | 2013-11-27 | 2013-11-27 | Engine dry cylinder liner machine body foam model |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104668461A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109351917A (en) * | 2018-11-29 | 2019-02-19 | 芜湖新兴新材料产业园有限公司 | The casting technique of motor housing |
-
2013
- 2013-11-27 CN CN201310609738.3A patent/CN104668461A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109351917A (en) * | 2018-11-29 | 2019-02-19 | 芜湖新兴新材料产业园有限公司 | The casting technique of motor housing |
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150603 |