CN104624972A - Filtering device for piston casting - Google Patents
Filtering device for piston casting Download PDFInfo
- Publication number
- CN104624972A CN104624972A CN201310562662.3A CN201310562662A CN104624972A CN 104624972 A CN104624972 A CN 104624972A CN 201310562662 A CN201310562662 A CN 201310562662A CN 104624972 A CN104624972 A CN 104624972A
- Authority
- CN
- China
- Prior art keywords
- filter screen
- piston
- mould body
- described filter
- casting
- 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.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22C—FOUNDRY MOULDING
- B22C9/00—Moulds or cores; Moulding processes
- B22C9/08—Features with respect to supply of molten metal, e.g. ingates, circular gates, skim gates
- B22C9/086—Filters
Abstract
Disclosed is a filtering device for piston casting, which comprises a piston outer die body, a pouring port, a filter screen, filter screen positioning pins, inner cavities and risers. The filter screen made of glass fiber is fixedly installed on the inner wall of the pouring port of the piston outer die body by using the filter screen positioning pins. Aluminium liquid injected into a piston die is filtered by the filter screen, and a content of impurities and oxides of the aluminium liquid injected into the piston die can be effectively reduced, so that the texture of the piston is denser, and thus the rigidity and strength of the piston are ensured and the usage life of the piston is prolonged.
Description
Technical field
The present invention relates to a kind of filter for piston casting, belong to casting for piston field.
Background technology
Engine is the heart of automobile, and piston is the parts that in engine, working environment is the most severe, endures high temperature, high pressure to the fullest extent in its service life and high-revolvingly to wreck.Along with the continuous increase of automobile pollution, high-quality piston can bring huge economic benefit.Common piston failure form has wearing and tearing, eccentric wear, mechanical damage and scorification etc., and this is on the one hand because the objective condition of work of piston causes, and also shows that piston manufacturing process still has greatly improved space on the other hand.
At present, shaping still main employing of piston has that efficiency is high, cost is low and the forging type of the advantage such as simple to operate, and thus optimization piston casting technique is the correct thinking of one of jigger lifting piston quality.The mold-filling capacity of the defects such as loose, the shrinkage cavity that casting easily produces and segregation and liquid metal is closely related.Casting character mainly refers to mobility, shrinkage, segregation and inspiratory etc., and wherein mobile performance directly affects the mold-filling capacity of liquid metal.In order to improve mold-filling capacity, conventional method has the mobility being increased liquid metal by external force, as compression casting, also can improve die cavity inner flow passage in addition.But the former needs more complicated equipment, the latter is subject to the restriction in casting structure and space.
Summary of the invention
Based on above-mentioned Problems existing and deficiency, the present invention devises a kind of filter for piston casting.
Technical scheme of the present invention is: impurity when utilizing filter removal to pour into a mould in liquid metal and oxide, promote the mobility of casting liquid, improve its mold-filling capacity, its strength and stiffness scope is guaranteed while increasing piston dense structure property, make piston have good mechanical property, thus improve its reliability.In liquid alloy, all elements that can form high-melting-point field trash all can fall low-alloyed mobility, and impurity and oxide all in the mobility weakening liquid alloy in varying degrees, therefore can should be filtered removal accordingly.By filtering, the impurity of removing and oxide no longer participate in the formation of foundry goods body, on the one hand make castings material even compact, also avoid occurring local strengthening and stiffened on the other hand, for the follow-up machining of piston or heat treatment provide convenient.
Based on above principle, the filter for piston casting of design is made up of parts such as the outer mould body 1 of piston, sprue gate 2, filter screen 3, filter screen alignment pin 4, inner chamber 5 and rising heads 6, and wherein the outer mould body 1 of piston comprises front mould body 8 and rear mould body 7.Filter screen 3 is arranged on the inwall at the sprue gate 2 of the outer mould body 1 of piston, mould body 8 inwall there is before close to cast channel height half a pair diameter slightly larger than the filter screen alignment pin 4 of the mesh length of side or diameter, for the location of filter screen 3 and fixing, require that filter screen edge exceeds channel cross-section, during such matched moulds, filter screen can be clamped simultaneously.Filter screen will bear the impact of high temperature metal liquid in the course of work, in order to ensure its reliability, requires that the material of filter screen is resistant to elevated temperatures glass fibre.The shape of this outer leaching net is rectangle or square, and size is about 20mm × 50mm ~ 50mm × 20mm, and thickness is 0.2 ~ 0.8mm, and filter screen top edge distance piston casting mouth distance from top is about 30 ~ 100mm.There is the flow resistance that causes increase to reduce filter screen as far as possible, and consider the adequacy of filtration, mesh is designed to the length of side or diameter is the square of 1 ~ 2mm or circular or above-mentioned development figure.
Accompanying drawing explanation
Fig. 1 is piston casting filter.
Fig. 2 is screen pack scheme of installation in runner.
In figure, 1 is outer mould body, is 2 sprue gates, and 3 is filter screen, and 4 is filter screen alignment pin, and 5 is inner chamber, and 6 is rising head, and 7 is rear mould body, and 8 is front mould body.
Detailed description of the invention
Filter for piston casting of the present invention is made up of parts such as the outer mould body 1 of piston, sprue gate 2, filter screen 3, filter screen alignment pin 4, inner chamber 5 and rising heads 6, and wherein the outer mould body 1 of piston comprises front mould body 8 and rear mould body 7.Filter screen 3 is arranged on the inwall at the sprue gate 2 of the outer mould body 1 of piston, mould body 8 inwall there is before close to cast channel height half a pair diameter slightly larger than the filter screen alignment pin 4 of mesh, for the location of filter screen 3 and fixing, require that filter screen edge exceeds channel cross-section, during such matched moulds, filter screen can be clamped simultaneously.Filter screen will bear the impact of high temperature metal liquid in the course of work, in order to ensure its reliability, requires that the material of filter screen is resistant to elevated temperatures glass fibre.The shape of this outer leaching net is rectangle or square, and size is about 20mm × 50mm ~ 50mm × 20mm, and thickness is 0.2 ~ 0.8mm, and filter screen top edge distance piston casting mouth distance from top is about 30 ~ 100mm.There is the flow resistance that causes increase to reduce filter screen as far as possible, and consider the adequacy of filtration, mesh is designed to the length of side or diameter is the square of 1 ~ 2mm or circular or above-mentioned development figure.
During piston casting, open forward and backward mould body, get a slice filter screen 3 and be sleeved on the filter screen alignment pin 4 of inwall, pressing makes its limit, left and right sides be close to wall.Close forward and backward mould body and lock, now screen pack is clamped by forward and backward die body.By sprue gate 2 toward die body perfusion liquid metal, fluid flows through filter screen elimination impurity and oxide under gravity, after this fills in cavity with better mobile performance, and overflows to last casting liquid from rising head, and cast terminates.Finally, open mould, take out Piston Casting with alligator pliers.So move in circles, just can produce high-quality piston expeditiously.
Claims (3)
1. the filter for piston casting, it is characterized in that described filter comprises the outer mould body (1) of piston, sprue gate (2), filter screen (3), filter screen alignment pin (4), inner chamber (5), rising head (6), the outer mould body (1) of wherein said piston comprises front mould body (8) and rear mould body (7), described filter screen (3) is arranged on the inwall at the sprue gate (2) of the outer mould body (1) of described piston, described filter screen alignment pin (4) is arranged on the inwall close to the described front mould body (8) of cast channel height half, realize the location to described filter screen (3).
2. the filter for piston casting according to claim 1, it is characterized in that: the material of described filter screen (3) is resistant to elevated temperatures glass fibre, shape is rectangle or square, size is about 20mm × 50mm ~ 50mm × 20mm, thickness is 0.2 ~ 0.8mm, square or the circle of the mesh form of described filter screen (3) to be the length of side or diameter be 1 ~ 2mm, the top edge of described filter screen (3) is about 30 ~ 100mm apart from the distance from top of described sprue gate (2).
3. the filter for piston casting according to claim 2, is characterized in that: the diameter of described filter screen alignment pin (4) is slightly larger than the length of side of the mesh of described filter screen (3) or diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310562662.3A CN104624972A (en) | 2013-11-14 | 2013-11-14 | Filtering device for piston casting |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310562662.3A CN104624972A (en) | 2013-11-14 | 2013-11-14 | Filtering device for piston casting |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104624972A true CN104624972A (en) | 2015-05-20 |
Family
ID=53204470
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310562662.3A Pending CN104624972A (en) | 2013-11-14 | 2013-11-14 | Filtering device for piston casting |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104624972A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114054680A (en) * | 2021-11-05 | 2022-02-18 | 安徽省恒泰动力科技有限公司 | Single-cavity die for feeding riser and large-cylinder-diameter piston |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US498479A (en) * | 1893-05-30 | Vehicle-wheel | ||
| CN2522195Y (en) * | 2002-02-10 | 2002-11-27 | 江苏万里活塞轴瓦总厂 | Anti-shrikage-porosity sand-hole aluminium piston casting mould |
| US20050167075A1 (en) * | 2004-02-02 | 2005-08-04 | Eckert C. E. | Molten aluminum filtration |
| CN201470825U (en) * | 2009-09-05 | 2010-05-19 | 南平华田机械工业有限公司 | Aluminum piston casting mould device |
| CN201900223U (en) * | 2010-11-27 | 2011-07-20 | 大连远景铸造有限公司 | Mould for embedding filter into core in core preparation |
| CN102151794A (en) * | 2011-02-23 | 2011-08-17 | 江苏大学 | Gravity casting method and device for piston |
| CN202411342U (en) * | 2011-12-29 | 2012-09-05 | 安徽省恒泰动力科技有限公司 | Double-riser pouring structure of piston |
| CN202606805U (en) * | 2012-05-17 | 2012-12-19 | 山东滨州渤海活塞股份有限公司 | Gravity casting die with riser head on aluminum piston short shaft |
| CN202725959U (en) * | 2012-03-29 | 2013-02-13 | 江苏兄弟活塞有限公司 | Heat preservation gating system for casting aluminum piston blank |
| CN203751244U (en) * | 2013-11-14 | 2014-08-06 | 安徽省恒泰动力科技有限公司 | Filter device for pouring piston |
-
2013
- 2013-11-14 CN CN201310562662.3A patent/CN104624972A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US498479A (en) * | 1893-05-30 | Vehicle-wheel | ||
| CN2522195Y (en) * | 2002-02-10 | 2002-11-27 | 江苏万里活塞轴瓦总厂 | Anti-shrikage-porosity sand-hole aluminium piston casting mould |
| US20050167075A1 (en) * | 2004-02-02 | 2005-08-04 | Eckert C. E. | Molten aluminum filtration |
| CN201470825U (en) * | 2009-09-05 | 2010-05-19 | 南平华田机械工业有限公司 | Aluminum piston casting mould device |
| CN201900223U (en) * | 2010-11-27 | 2011-07-20 | 大连远景铸造有限公司 | Mould for embedding filter into core in core preparation |
| CN102151794A (en) * | 2011-02-23 | 2011-08-17 | 江苏大学 | Gravity casting method and device for piston |
| CN202411342U (en) * | 2011-12-29 | 2012-09-05 | 安徽省恒泰动力科技有限公司 | Double-riser pouring structure of piston |
| CN202725959U (en) * | 2012-03-29 | 2013-02-13 | 江苏兄弟活塞有限公司 | Heat preservation gating system for casting aluminum piston blank |
| CN202606805U (en) * | 2012-05-17 | 2012-12-19 | 山东滨州渤海活塞股份有限公司 | Gravity casting die with riser head on aluminum piston short shaft |
| CN203751244U (en) * | 2013-11-14 | 2014-08-06 | 安徽省恒泰动力科技有限公司 | Filter device for pouring piston |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114054680A (en) * | 2021-11-05 | 2022-02-18 | 安徽省恒泰动力科技有限公司 | Single-cavity die for feeding riser and large-cylinder-diameter piston |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150520 |
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| WD01 | Invention patent application deemed withdrawn after publication |