CN202348464U - Rotary press forged steel piston blank with inner cooling oil cavity - Google Patents
Rotary press forged steel piston blank with inner cooling oil cavity Download PDFInfo
- Publication number
- CN202348464U CN202348464U CN 201120428931 CN201120428931U CN202348464U CN 202348464 U CN202348464 U CN 202348464U CN 201120428931 CN201120428931 CN 201120428931 CN 201120428931 U CN201120428931 U CN 201120428931U CN 202348464 U CN202348464 U CN 202348464U
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- forged steel
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- cooling oil
- rotary press
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Abstract
The utility model discloses a rotary press forged steel piston blank with an inner cooling oil cavity. The rotary press forged steel piston blank is an integral forged steel piston blank, wherein a piston comprises a head part and a skirt part; a concave surface window is arranged at the skirt part; and a lug boss for forming the blank by rotary press is arranged at the head part. The concave surface window is formed by forging. The lug boss required for forming the blank by rotary press is arranged at the head part and a shielding part for blocking the inner cooling oil cavity is formed by machining. The forged steel piston blank is integrally forged; and the shielding part which is formed by rotary press and is used for blocking the inner cooling oil cavity and the head part are integrated into a whole, and thus the structural strength is high. The concave surface window at the skirt part is formed by forging; the forged steel material is high in strength and a pin hole can bear higher pressure intensity, so that the direction of the pin hole can be shortened; and the concave surface window is forged, so that the weight of the whole piston is reduced.
Description
Technical field
The utility model relates to a kind of piston blank, especially a kind of spinning system forged steel piston blank with interior cooling oil pocket.
Background technique
Be used at present that high performance diesel requirement power such as truck, engineering machinery, railway locomotive and steamer are big, oil consumption is low, noise is little, discharging is low, its reinforcing degree improves day by day.The diesel engine for automobile pressure of explosion of domestic-developed has surpassed 20MPa at present, and traditional cast aluminium piston has been difficult to satisfy the requirement of high performance diesel reliability.To diesel engine piston high-power, high load, hinge structure piston and forged steel piston just arise at the historic moment.
Hinged pendulum mass formula structure piston, promptly piston head and piston skirt separate machined are made, and couple together through wrist pin, and piston head adopts cast iron or forged steel material, and piston skirt adopts the aluminium material manufacturing.This piston has increased processing cost, and has been difficult to form the cooling oil pocket of sealing because piston head separates manufacturing with piston skirt, and the piston cooling effect is poor, because need longer wrist pin to connect, overall weight also increases to some extent simultaneously.
Cooling oil pocket in the forged steel piston can not water as casting the aluminium piston when blank forging is produced and cast out, therefore the general production technology of forged steel piston has following several kinds at present:
Chinese patent CN1610601A discloses a kind of method of making the forged steel piston, and this method is that the piston blank integral type is forged, and with a ring cowling of processing in addition, with the annular groove assembling that piston crown processes, goes into oil closed cavity.But its complex manufacturing technology, manufacture cost is high, and structure of piston intensity has much room for improvement.
Chinese patent CN2851607Y discloses the method for another kind of manufacturing forged steel piston; This method is that forge respectively in head and skirt section, and interior cooling oil pocket is to process the back respectively through friction welding formation at head and skirt section, and friction welding accepts its technology mode and device structure performance, precision are limit; Conformity with series-produced its length dimension of friction welding piston is relatively poor; Cause piston weight and the interior cooling oil pocket size that the welding back is produced to differ greatly, thereby make the welding reject rate very high, directly influence engine performance; And welding overlap big (generally at 4-8mm); Need carry out special processing to its welding overlap that is exposed, but the welding overlap of interior cooling oil pocket the inside can't remove, can have influence on the piston cooling effect.
Chinese patent CN101265854A discloses the method for another kind of manufacturing forged steel piston, and this method is that piston only and piston ring body forge respectively and process, and through laser bonding it is become one then, cooling oil pocket in forming between the two after the welding.Laser bonding is owing to be melting; Particularly laser technique adopts the light beam of polariscope reflector laser generation to make it concentrate on the light beam that produces huge energy in the focuser; Weldment can melt in several milliseconds and evaporate; The weld zone chemical composition is slightly different because of high temperature evaporation and mother metal, and the weld zone occurs pore, segregation easily, is mingled with the crystal defect with cast structures such as crackles during cooling.Laser welding apparatus is complicated, cost is high, and the working service technical requirements is high, weldment thickness size Stimulated Light device Power Limitation, to weldment level, assembling quality requirement is strict, thereby its application has significant limitation.
Summary of the invention
The purpose of the utility model is for overcoming the deficiency of above-mentioned existing technology, a kind of spinning system forged steel piston blank with interior cooling oil pocket is provided, this piston blank one forging, structural strength height, good cooling results.
For realizing above-mentioned purpose, the utility model adopts following technical proposals:
A kind of spinning system forged steel piston blank with interior cooling oil pocket, said piston blank is an integrated type forged steel piston blank, and said piston comprises head and skirt section, and said skirt section is provided with recessed face-port, and head is provided with the boss of making the mould pressing blank.
Said recessed face-port is a forging and molding.
The utility model comprise head, key seat and skirt section, there is recessed face-port in the skirt section, head has the required boss of the mould pressing blank of making, the shield portions of cooling oil pocket in machining forms shutoff.The forged steel piston blank is that integrated type is forged, and the shield portions and the head that are used for cooling oil pocket in the mould pressing shutoff are one, and structural strength is high.
The recessed face-port in skirt section is a forging and molding, because the forged steel Material Strength is high, pin-and-hole can bear higher pressure, so the pin-and-hole direction can shorten, through forging recessed face-port, has alleviated the weight of whole piston.
Description of drawings
Fig. 1 is the utility model structural representation;
Fig. 2 is the plan view of Fig. 1;
Wherein 1. heads, 4. skirt section, 5. face-port, 6. boss.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further specified.
Like Fig. 1, shown in 2; A kind of spinning system forged steel piston blank with interior cooling oil pocket, said piston blank is an integrated type forged steel piston blank, said piston blank comprises head 1 and skirt section 4; Said skirt section 4 is provided with recessed face-port 5, and head 4 is provided with the boss 6 of making the mould pressing blank.
Said recessed face-port 5 is a forging and molding.
Though the above-mentioned accompanying drawing that combines is described the embodiment of the utility model; But be not restriction to the utility model protection domain; One of ordinary skill in the art should be understood that; On the basis of the technological scheme of the utility model, those skilled in the art need not pay various modifications that creative work can make or distortion still in the protection domain of the utility model.
Claims (2)
1. the spinning system forged steel piston blank of the interior cooling of a band oil pocket is characterized in that said piston blank is an integrated type forged steel piston blank, and said piston comprises head and skirt section, and said skirt section is provided with recessed face-port, and head is provided with the boss of making the mould pressing blank.
2. the spinning system forged steel piston blank of cooling oil pocket is characterized in that said recessed face-port is a forging and molding in the band as claimed in claim 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120428931 CN202348464U (en) | 2011-11-02 | 2011-11-02 | Rotary press forged steel piston blank with inner cooling oil cavity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201120428931 CN202348464U (en) | 2011-11-02 | 2011-11-02 | Rotary press forged steel piston blank with inner cooling oil cavity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202348464U true CN202348464U (en) | 2012-07-25 |
Family
ID=46537473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201120428931 Expired - Fee Related CN202348464U (en) | 2011-11-02 | 2011-11-02 | Rotary press forged steel piston blank with inner cooling oil cavity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202348464U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979641A (en) * | 2012-12-06 | 2013-03-20 | 湖南江滨机器（集团）有限责任公司 | Integrated type cast steel piston and manufacturing method thereof |
-
2011
- 2011-11-02 CN CN 201120428931 patent/CN202348464U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102979641A (en) * | 2012-12-06 | 2013-03-20 | 湖南江滨机器（集团）有限责任公司 | Integrated type cast steel piston and manufacturing method thereof |
| CN102979641B (en) * | 2012-12-06 | 2015-06-17 | 湖南江滨机器（集团）有限责任公司 | Integrated type cast steel piston and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120725 Termination date: 20141102 |
|
| EXPY | Termination of patent right or utility model |