CN2892325Y - Aluminium alloy linking liquid die forging metal mould cavity structure - Google Patents
Aluminium alloy linking liquid die forging metal mould cavity structure Download PDFInfo
- Publication number
- CN2892325Y CN2892325Y CN 200620110368 CN200620110368U CN2892325Y CN 2892325 Y CN2892325 Y CN 2892325Y CN 200620110368 CN200620110368 CN 200620110368 CN 200620110368 U CN200620110368 U CN 200620110368U CN 2892325 Y CN2892325 Y CN 2892325Y
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- CN
- China
- Prior art keywords
- connecting rod
- die cavity
- cavity
- pressure chamber
- link pole
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- Expired - Fee Related
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Abstract
The utility model relates to a metal die cavity for liquid forging of aluminum alloy link poles, and the cavity comprises a fixed cavity plate and a movable cavity plate. The utility model is provided with a pressure chamber at the center, a plurality of integral link pole cavities, link pole cover cavities and/or link pole body cavities, which are respectively connected with the pressure chamber through metal fluid channels, and a slag box at the end. The integral link pole cavities, link pole cover cavities and/or link pole body cavities are distributed around the circumference of the pressure chamber. Length of the metal fluid channel between the connecting pressure chamber and each integral link pole cavity, link pole cover cavity and/or link pole body cavity is smaller than 300mm, area of any cross-section of the pressure chamber parallel to the product parting surface is larger than 3cm2 and smaller than 700cm2. The utility model can be used to simplify material pouring system, achieve accurate product profile, reduce 20 percent of inner air holes, refine grains, and improve density, link pole strength, wear resistance and casting qualification rate.
Description
Technical field
The utility model belongs to the metal die foundry engieering, is specifically related to the metal die cavity design that a kind of Birmasil connecting rod is used, and is used to produce the aluminum alloy connecting rod foundry goods.
Background technology
Existing casting to aluminum alloy connecting rod all is to adopt compression casting, low pressure casting and traditional gravity casting technique to realize, though they have certain advantage, all there is certain problem in the product that obtains.
Adopt the traditional gravity casting technique, though mould is simple, metal flow passage is long, and the dead head stub bar is many, and the product profile tolerance is unintelligible, if the connecting rod foundry goods is had relatively high expectations, and just can not the similar complex parts of moulding.Simultaneously, casting solidification speed is slower, and crystal grain is big, and the crystallization of low-melting rich zinc phase is also bigger, causes to contain that zinc condenses mutually, wearability is poor slightly, is easy to generate the crystal boundary burning when heat treatment, but is difficult to find fracture hidden danger in appearance from the connecting rod foundry goods.
Adopt low-pressure casting process, have the defective of similar gravitational casting equally, though mould is simple, metal flow passage is long, the dead head stub bar is many, and efficient is low, the contour accuracy of connecting rod foundry goods is not high, and pore is more, crystal grain is coarse, and the dense internal organization degree is not enough, and qualification rate is lower.
Adopt pressure casting process, the complex structure of mould, processing is difficult, and the die cost height must adopt special-purpose compression casting equipment and mould auxiliary work, and whole investment and business risk are big.Mould with compression casting is produced aluminum alloy connecting rod, because filling velocity is fast, just nature cools off, and does not have the work step of feeding, and the hydrogen in the molten metal is difficult for separating out, and causes the pore of connecting rod foundry goods more, and the qualification rate of casting is very low.Simultaneously, can not carry out molten admittedly intensive treatment to the connecting rod foundry goods, organize internal stress with elimination, crystal grain thinning reaches higher requirement of strength.
And along with the development of foundry engieering, a kind of new casting technique---liquid forging has appearred, also be called extrusion casint, it is a kind of casting technique of coming based on compression casting, low pressure casting and the development of traditional gravity casting technique, be on the common hydraulic press but not on die casting machine or other the special-purpose Casting Equipments, the liquid aluminium alloy of fusing is directly poured in the metal pattern, then at the effect compacted under of certain hour and pressure, to obtain part blank.The attention that liquid forging at present is subjected to machine industry because of its powerful technology that has and economic advantages, each country is all in the development and application of this technology of acceleration.
Summary of the invention
The purpose of this utility model is the deficiency at existence in the existing aluminum alloy connecting rod casting, a kind of aluminum alloy connecting rod liquid forging metal die cavity structure is proposed, water the material system with simplification, obtain size profile accurately, reduce internal porosity 20%, thinning microstructure crystal grain, increase density, improve connecting rod strength, wearability and casting qualification rate.
The technical solution of the utility model is as follows:
A kind of aluminum alloy connecting rod liquid forging metal die cavity structure, surround by cover half cavity plate and dynamic model cavity plate and to form, the center of cover half cavity plate and dynamic model cavity plate is for pressing the chamber, offer a plurality of monoblock type connecting rod die cavities, connecting rod cap die cavity and/or gonnecting rod body die cavity around pressing the chamber, they link to each other by corresponding metal liquation runner with pressing the chamber respectively, and the afterbody of connecting rod die cavity, connecting rod cap die cavity and/or gonnecting rod body die cavity has slag trap.It is characterized in that: monoblock type connecting rod die cavity, connecting rod cap die cavity and/or gonnecting rod body die cavity are around pressing the chamber circumferentially to distribute; The length of pressing the molten metal runner that is connected between chamber and each monoblock type connecting rod die cavity, gonnecting rod body die cavity and/or the connecting rod cap die cavity is all less than 300mm.
For the size of pressing the chamber, characteristics of the present utility model are that the design pressure chamber arbitrary cross-sectional area parallel with the product die joint is greater than 3cm
2, and less than 700cm
2
For the position of molten metal charging aperture, the utility model also has special design, that is: for gonnecting rod body, connecting rod cap separate type connecting rod die cavity, the molten metal charging aperture is positioned on the faying face of gonnecting rod body and connecting rod cap; Or the radially side between bent axle nose end and piston pin nose end; For monoblock type connecting rod die cavity, the radially side of molten metal charging aperture between bent axle nose end and piston pin nose end.
Adopt above-mentioned design, the utility model can obtain following effect:
1 design die cavity can reduce the molten metal flow resistance around pressing the chamber circumferentially to distribute, and reduces passing through the time in metal flow passage, keeps the flowability of pouring temperature and molten metal, so that the filling die cavity.
2. design presses the periphery of chamber to connect the flow channel length of the molten metal between each monoblock type connecting rod die cavity, gonnecting rod body die cavity or the connecting rod cap die cavity all less than 300mm, can guarantee that molten metal arrives the connecting rod die cavity in the shortest time, reduce flow resistance to greatest extent, keep desirable cast and fill the type temperature, the pressure of pressing the chamber is passed to metallic object in the die cavity with minimal losses, reduce and fill the casting flaw that produces in type and the cooling procedure.
3. design the pressure chamber arbitrary cross-sectional area parallel greater than 3cm with die joint
2, and less than 700cm
2No matter press the geometry type of chamber cross-section, the pressure chamber arbitrary cross-sectional area parallel with die joint is greater than 3cm
2, and less than 700cm
2Can both guarantee to reach with die cavity in the projected area of metallic object and the desired pressure ratio that weight is complementary, apply suitable and equally distributed pressure in the process of cooling off, solidifying and shrink at metallic solution, the connecting rod foundry goods is carried out feeding, to increase the density of interior tissue, improve structure, improve the connecting rod casting strength.
4. the molten metal charging aperture of design monoblock type connecting rod is positioned on the faying face of gonnecting rod body and connecting rod cap, can make metallic solution in full accord and be a straight line with the die cavity end of gonnecting rod body, connecting rod cap from the flow direction of pressing chamber, molten metal runner, charging aperture, reduce flow resistance to greatest extent, through cavity bottom is finished with the shortest time and is filled type.Because the faying face of all connecting rods all needs machining, the one so the kish of charging aperture and machining position exist together, machining is incorporated in once with removing charging aperture residual metal finishes, eliminate the charging aperture vestige that occurs influencing outward appearance on the non-machined surface fully.
5. design the radially side of molten metal charging aperture between bent axle nose end and piston pin nose end of monoblock type connecting rod die cavity, after molten metal flows into charging aperture, can balance to the shunting amount of metal at die cavity both ends, make molten metal meet that the chamber wall is obstructed and temperature when refluxing reaches unanimity when confluxing, owe casting flaws such as casting, stacked, cold shut, pore with elimination; Charging aperture is positioned at a radially side, avoided the circular arc at bent axle nose end and piston pin nose end cylindrical place, when making subsequent handling remove the kish at charging aperture place, be convenient on bigger plane to use instrument such as file rather than clear up, thereby avoid injuring part noumenon in very little cambered surface and complex-shaped surface.
Description of drawings
Fig. 1 is the structural representation (following is example when pressing chamber cross-section to be circle all) of the 1st kind of mold cavity structure
Fig. 2 is the cover half cavity plate vertical view (because the dynamic model cavity plate is corresponding substantially with it, so show no longer that here following situation is similar) of the 2nd kind of mold cavity structure
Fig. 3 is the cover half cavity plate vertical view of the 3rd kind of mold cavity structure
Fig. 4 is the cover half cavity plate vertical view of the 4th kind of mold cavity structure
Fig. 5 is the cover half cavity plate vertical view of the 5th kind of mold cavity structure
Fig. 6 is the cover half cavity plate vertical view of the 6th kind of mold cavity structure
Fig. 7 is the cover half cavity plate vertical view of the 7th kind of mold cavity structure
Fig. 8 is the cover half cavity plate vertical view of the 8th kind of mold cavity structure
Among the figure: 1 dynamic model cavity plate, 2 cover half cavity plate, 3 press chamber, 4 molten metal runners, 5 monoblock type connecting rod die cavities, 6 connecting rod cap die cavities, 7 gonnecting rod body die cavities, 8 charging apertures, 9 slag traps, 10 ejector beam holes, 11 die joints
The specific embodiment
At first referring to Fig. 1, shown a kind of aluminum alloy connecting rod liquid forging metal die cavity structure, it is to be surrounded by cover half cavity plate 2 and dynamic model cavity plate 1 to form, its center is for pressing chamber 3, offer monoblock type connecting rod die cavity 5, connecting rod cap die cavity 6, gonnecting rod body die cavity 7 around the pressure chamber 3 at center, they link to each other by corresponding metal liquation runner 4 with pressing chamber 3 respectively, the length of molten metal runner 4 is less than 300mm, and the afterbody of each die cavity has slag trap 9.The molten aluminium alloy of fusing enters connecting rod die cavity 5, connecting rod cap die cavity 6, gonnecting rod body die cavity 7 by molten metal runner 4 after pouring into and pressing chamber 3, and the residue in the liquation enters the slag trap 9 around the product die cavity.Wherein press the parallel arbitrary cross-sectional area of chamber 3 and die joint 11 greater than 3cm
2, and less than 700cm
2
Above-mentioned mold cavity structure is in the concrete use on the liquid forging metal die: under the state that metal pattern cover half cavity plate and dynamic model cavity plate are opened, the molten aluminium alloy that is melted to uniform temperature is directly poured into the pressure chamber, hydraulic press is taken blame for others and is driven the descending closed metal pattern of dynamic model part, penetrator ram on the cylinder at the bottom of the hydraulic press, it is up in pressing the chamber to drive pressure head, makes molten aluminium alloy be full of the connecting rod die cavity and feeding and crystallization and freezing under pressure.Behind the pressurize certain hour, hydraulic press is taken blame for others and is driven the up opening metal model of dynamic model part, when stroke reaches certain distance, the liftout system passes to resistance the metallic object that cools off in the die cavity by ejector beam hole 8, comprise connecting rod blank, press the metal in stub bar, metal flow passage and the slag trap in the chamber, make it the movable model cavity configuration, behind the taking-up metallic object, cleaning die cavity and spray paint are promptly finished a working cycles.
Monoblock type connecting rod die cavity 5, connecting rod cap die cavity 6 and gonnecting rod body die cavity 7 on the mold cavity structure can have multiple combination arrangement form, and also there is multiple variation the position of respective metal liquation charging aperture 8, referring to Fig. 2-Fig. 9.
Fig. 2 has shown evenly has been furnished with two connecting rod cap die cavities 6, two gonnecting rod body die cavities 7 that around the pressure chamber 3 of cavity structure molten metal charging aperture 8 is positioned on the faying face of gonnecting rod body and connecting rod cap.
Fig. 3 shown around the pressure chamber 3 of cavity structure evenly be furnished with four connecting rod cap die cavities 6, molten metal charging aperture 8 is positioned on the faying face of connecting rod cap and gonnecting rod body.
Fig. 4 shown evenly be furnished with four gonnecting rod body die cavities 7 around the pressure chamber 3 of cavity structure, molten metal charging aperture 8 is positioned at the faying face of connecting rod cap 6 on.
Fig. 5 has shown evenly be furnished with two gonnecting rod body die cavities 7 around the pressure chamber 3 of cavity structure, two connecting rod cap die cavities 6, the charging aperture 8 of connecting rod cap die cavity 6 is positioned on the faying face of gonnecting rod body and connecting rod cap, the radially side of the charging aperture 8 of gonnecting rod body 7 between bent axle nose end and piston pin nose end.
Fig. 6 has shown evenly be furnished with four gonnecting rod body die cavities 7, the radially side of the charging aperture 8 of gonnecting rod body between bent axle nose end and piston pin nose end around the pressure chamber 3 of cavity structure.
Fig. 7 has shown evenly be furnished with three monoblock type gonnecting rod body die cavities 5, the radially side of the charging aperture 8 of gonnecting rod body between bent axle nose end and piston pin nose end around the pressure chamber 3 of cavity structure.
Fig. 8 has shown the monoblock type connecting rod die cavity 5 that evenly is furnished with three another kind of forms around the pressure chamber 3 of cavity structure, the radially side of charging aperture 8 between bent axle nose end and piston pin nose end.
Claims (4)
1, aluminum alloy connecting rod liquid forging metal die cavity structure, surround by cover half cavity plate and dynamic model cavity plate and to form, center in cover half cavity plate and dynamic model cavity plate is the pressure chamber, offer a plurality of monoblock type connecting rod die cavities, connecting rod cap die cavity and/or gonnecting rod body die cavity around pressing the chamber, they link to each other by the molten metal runner respectively with pressing the chamber, and the afterbody of connecting rod die cavity, connecting rod cap die cavity and/or gonnecting rod body die cavity has slag trap; It is characterized in that: monoblock type connecting rod die cavity, connecting rod cap die cavity and/or gonnecting rod body die cavity are around pressing the circumferential distribution in chamber; The length that connects the molten metal runner between pressure chamber and each monoblock type connecting rod die cavity, gonnecting rod body die cavity and/or the connecting rod cap die cavity is all less than 300mm.
2, aluminum alloy connecting rod liquid forging metal die cavity structure according to claim 1 is characterized in that: the pressure chamber arbitrary cross-sectional area parallel with the product die joint is greater than 3cm
2, and less than 700cm
2
3, aluminum alloy connecting rod liquid forging metal die cavity structure according to claim 1 and 2 is characterized in that: for gonnecting rod body and connecting rod cap separate type connecting rod die cavity, the molten metal charging aperture is positioned on the faying face of gonnecting rod body and connecting rod cap; Or the radially side between bent axle nose end and piston pin nose end.
4. aluminum alloy connecting rod liquid forging metal die cavity structure according to claim 1 and 2 is characterized in that: for monoblock type connecting rod die cavity, and the radially side of molten metal charging aperture between bent axle nose end and piston pin nose end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620110368 CN2892325Y (en) | 2006-04-17 | 2006-04-17 | Aluminium alloy linking liquid die forging metal mould cavity structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620110368 CN2892325Y (en) | 2006-04-17 | 2006-04-17 | Aluminium alloy linking liquid die forging metal mould cavity structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2892325Y true CN2892325Y (en) | 2007-04-25 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620110368 Expired - Fee Related CN2892325Y (en) | 2006-04-17 | 2006-04-17 | Aluminium alloy linking liquid die forging metal mould cavity structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2892325Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102950255A (en) * | 2011-08-31 | 2013-03-06 | 吴江市荣顺精密铸件有限公司 | Needle rod oscillating bar die |
| CN103128229A (en) * | 2011-11-26 | 2013-06-05 | 东风精密铸造有限公司 | Investment casting mold cavity cleaning method based on selected area laser powder sintering rapid proto-typing technology application |
| CN108788090A (en) * | 2018-07-04 | 2018-11-13 | 重庆环鹰机械有限公司 | A kind of cavity flow passage structure of aluminum alloy connecting rod liquid forging mold |
-
2006
- 2006-04-17 CN CN 200620110368 patent/CN2892325Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102950255A (en) * | 2011-08-31 | 2013-03-06 | 吴江市荣顺精密铸件有限公司 | Needle rod oscillating bar die |
| CN102950255B (en) * | 2011-08-31 | 2014-12-17 | 苏州莱斯豪精密铸造有限公司 | Needle rod oscillating bar die |
| CN103128229A (en) * | 2011-11-26 | 2013-06-05 | 东风精密铸造有限公司 | Investment casting mold cavity cleaning method based on selected area laser powder sintering rapid proto-typing technology application |
| CN108788090A (en) * | 2018-07-04 | 2018-11-13 | 重庆环鹰机械有限公司 | A kind of cavity flow passage structure of aluminum alloy connecting rod liquid forging mold |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070425 |