CN206343842U - A kind of soldering steel pistons - Google Patents
A kind of soldering steel pistons Download PDFInfo
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- CN206343842U CN206343842U CN201621416849.8U CN201621416849U CN206343842U CN 206343842 U CN206343842 U CN 206343842U CN 201621416849 U CN201621416849 U CN 201621416849U CN 206343842 U CN206343842 U CN 206343842U
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Abstract
The utility model discloses a kind of soldering steel pistons, including piston head and piston skirt, provided with annular inner-cooling oil recess between the piston head and piston skirt, it is characterized in that, the piston head and piston skirt weld together composition piston only by main weldering junction, secondary solder side, solder fill area is equipped with the main weldering junction and secondary solder side, the volume of solder fill area in the main weldering junction is 1 1.5 times that the volume of the solder fill area on 1 1.5 times of the volume of main solder side weld seam, the secondary solder side is the volume of secondary solder side weld seam；The piston head and piston skirt are located by connecting by positioner.The utility model uses a variety of positioning connections of piston crown and skirt section, it is simple to operate, production efficiency is high, and the welding of oil cooling passage steel pistons in the opposite sex can be realized, it can solve the problem that the shortcoming of conventional friction welding steel piston, interior oil cooling passage inner wall smooth, the non-trimming burr of the soldering steel pistons, upper-lower position are accurate, piston crown good cooling results.
Description
Technical field
The utility model is related to a kind of soldering steel pistons.
Background technology
Continuous lifting with people to environmental problem attention degree, the requirement to engine performance is also being improved constantly.
At present, truck, engineering machinery all develop to high-power, high load capacity direction, and reinforcing degree is improved constantly, common aluminum alloy
Piston can not increasingly meet the demand of development of engine, and steel pistons are due to intensity height, high temperature resistant, good toughness, thermal conductivity
The advantages of good and fatigue resistance is good has become the important directions of piston development.The development of steel pistons is long-standing, is not new
Make trouble thing, at present, what is mainly used there are the structure types such as overall forged steel, friction welding steel pistons, and overall forging steel piston is difficult shape
Into interior oil cooling passage, to piston crown cooling effect difference and high processing costs；Though friction welding (FW) steel pistons can form interior oil cooling passage,
Due to the limitation of technique, there is very big welding overlap influence piston crown cooling effect in interior oil cooling passage, and can not manufacture
Baroque interior oil cooling passage, while being not suitable for the steel pistons of minor diameter.Vacuum drying oven soldering processes can be using accurate fixed
Position mode, makes baroque interior oil cooling passage steel pistons, and the cooling effect of piston crown is improved to greatest extent, is preferably carried
The performance of high engine, while the process stabilizing, production efficiency is high.
Existing friction welding (FW) steel pistons structure is as shown in figure 1, high under certain friction pressure between piston head and piston skirt
Speed in reversed direction friction rotation produces frictional heat；Quickly stopped the rotation after the friction regular hour, under pressure piston head
Weld together with piston skirt.There are some shortcomings in existing steel pistons manufacturing technology：About 4mm is left in oil duct in piston high
Weld oil cooling passage cooling effect in overlap, influence；Piston head and piston skirt are welded using spin friction, and welding and assembling height should not be controlled
System, oil duct in piston upper-lower position control ability is poor；Because using spin friction welding, radial direction can not be positioned, it is impossible to
The different in nature internally-cooled oil channel piston of manufacture.
Utility model content
In order to overcome the above-mentioned deficiencies of the prior art, the utility model provides a kind of soldering steel pistons, using piston head
The a variety of positioning connections in portion and skirt section, simple to operate, production efficiency is high, and can realize the weldering of oil cooling passage steel pistons in the opposite sex
Connect, can solve the problem that the shortcoming of conventional friction welding steel piston, interior oil cooling passage inner wall smooth, the non-trimming burr of the soldering piston, on
Lower position is accurate, piston crown good cooling results.
The technical scheme that the utility model is used is：
A kind of soldering steel pistons, including piston head and piston skirt, provided with cold in annular between the piston head and piston skirt
Oil pocket, the piston head and piston skirt are by constituting piston only, the master together with main weldering junction, secondary solder side soldering connection
The volume for the solder fill area being equipped with solder side and secondary solder side in solder fill area, the main weldering junction is main solder side
The volume of solder fill area on 1-1.5 times of the volume of weld seam, the secondary solder side is the 1- of the volume of secondary solder side weld seam
1.5 again；The piston head and piston skirt are located by connecting by positioner.
Further, the positioner is the alignment pin being arranged on secondary solder side.
Further, the positioner is the locating slot that underside of the piston head both sides are opened.
Further, the positioner is the frock clamp for being arranged on piston only both sides.
Further, the main weldering junction be parallel to each other with secondary solder side and and plane-parallel, main weldering junction is less than pair
Solder side.
Further, the main weldering junction is mutually perpendicular to secondary solder side.
A kind of manufacture method of soldering steel pistons, comprises the following steps：
(1) piston head, piston skirt and positioner blank are forged respectively；
(2) roughing is carried out to piston head and piston skirt blank respectively, processes inner-cooling oil recess, main weldering junction, secondary welding
Face and solder fill area；
(3) degreasing cleaning is carried out to piston head, piston skirt and positioner blank respectively；
(4) it is layered on using sheet solder in main weldering junction and secondary solder side, solder fill area is filled up using graininess solder,
Piston head and piston skirt are assembled up by positioner；
(5) piston-top surface assembled is placed in vacuum drying oven upward and be heat-treated, welded by piston head deadweight
Connect, complete piston soldering；
(6) combustion chamber, the pin-and-hole of piston are processed respectively.
Further, in the step (3), from dichloromethane (CH2Cl2) cleaning agent is to piston head, piston skirt and positioning
Device blank carries out ultrasonic wave and cleans 5~10min.
Further, in the step (4), sheet solder and graininess solder select nickel-based solder, and sheet solder is thick
Spend for 0.05~0.15mm, graininess solder granularity is 80-120 mesh.
Further, in the step (5), the step of being heat-treated in vacuum drying oven is：From room temperature with 8~15 DEG C/min speed
Degree is raised to 750 DEG C~850 DEG C, is incubated 30min；Again with 6 DEG C~10 DEG C of speed be raised to 1050 DEG C~1250 DEG C insulation 15min~
60min, then furnace cooling carries out Quenching Treatment immediately to 850 DEG C~900 DEG C after coming out of the stove；In heating and cooling procedure, very
Vacuum is maintained at 5 × 10 in empty stove-2Within Pa.
Compared with prior art, the beneficial effects of the utility model are：
(1) in brazing process, piston is under vacuum condition, is not in that oxidation, carburetting, decarburization and pollution etc. are existing
As；
(2) after the completion of soldering, commissure room temperature tensile strength reaches more than the 75% of bulk material, is fully able to meet high
The design requirement of performance engine piston；
(3) be not in stomata near vacuum furnace brazing, weld seam, the defect such as be mingled with, and can save clear after soldering
The process for washing residual brazing flux, saves the time, improves working condition, environmentally safe；
(4) different positioning methods is used, the piston of oil cooling passage in the opposite sex can be welded out, dissipating for interior oil cooling passage is increased
Hot area, improves the cooling condition of piston；
(5) quenching process can be completed in brazing process, both saved the energy, be improved production efficiency.
Brief description of the drawings
Fig. 1 is friction welding (FW) steel pistons structural representation；
Fig. 2 is a kind of finger setting piston structure schematic diagram of the utility model embodiment；
Fig. 3 is finger setting piston structure top view；
Fig. 4 is a kind of card slot type piston structure schematic diagram of the utility model embodiment；
Fig. 5 positions piston structure schematic diagram for a kind of frock clamp of the utility model embodiment；
Fig. 6 is a kind of card slot type piston structure schematic diagram of the utility model embodiment；
Fig. 7 is a kind of piston structure schematic diagram of the utility model embodiment；
Wherein, 1, piston head, 2, piston skirt, 3, solder fill area, 4, main weldering junction, 5, annular inner-cooling oil recess, 6, positioning
Pin, 7, locating slot, 8, frock clamp, 9, secondary solder side, 10, combustion chamber, 11, pin-and-hole, 12, welding overlap.
Embodiment
The utility model is further illustrated below in conjunction with the accompanying drawings.
As shown in Figure 1-2, a kind of soldering steel pistons, including piston head 1 and piston skirt 2, the piston head 1 and piston skirt 2
Between provided with annular inner-cooling oil recess 5, the piston head 1 and piston skirt 2 are by main weldering junction 4, the secondary soldering connection of solder side 9 one
Composition piston only is played, the main weldering junction 4 is with secondary solder side 9 respectively at plane-parallel, and main weldering junction 4 is less than secondary solder side
9；The body for the solder fill area 3 being equipped with the main weldering junction 4 and secondary solder side 9 in solder fill area 3, the main weldering junction
Product is that the volume of the solder fill area 3 on 1-1.5 times of the volume of main solder side weld seam, the secondary solder side is secondary solder side weldering
1-1.5 times of the volume of seam；Secondary solder side between the piston head 1 and piston skirt 2 is provided with alignment pin 6, the piston head 1
It is located by connecting with piston skirt 2 by alignment pin 6.
As shown in figure 3, a kind of soldering steel pistons, including piston head 1 and piston skirt 2, the piston head 1 and piston skirt 2 it
Between provided with annular inner-cooling oil recess 5, the piston head 1 and piston skirt 2 are by together with main weldering junction 4, the secondary soldering connection of solder side 9
Piston only is constituted, the main weldering junction 4 is with secondary solder side 9 respectively at plane-parallel, and main weldering junction 4 is less than secondary solder side 9；
The volume for the solder fill area 3 being equipped with the main weldering junction 4 and secondary solder side 9 in solder fill area 3, the main weldering junction
For 1-1.5 times of the volume of main solder side weld seam, the volume of the solder fill area 3 on the secondary solder side is secondary solder side weld seam
1-1.5 times of volume；The both sides of the bottom of piston head 1 are provided with locating slot 7, and the piston head 1 and piston skirt 2 pass through positioning
Groove 7 is located by connecting.
As shown in figure 4, a kind of soldering steel pistons, including piston head 1 and piston skirt 2, the piston head 1 and piston skirt 2 it
Between provided with annular inner-cooling oil recess 5, the piston head 1 and piston skirt 2 are by together with main weldering junction 4, the secondary soldering connection of solder side 9
Piston only is constituted, the main weldering junction 4 is with secondary solder side 9 respectively at plane-parallel, and main weldering junction 4 is less than secondary solder side 9；
The volume for the solder fill area 3 being equipped with the main weldering junction 4 and secondary solder side 9 in solder fill area 3, the main weldering junction
For 1-1.5 times of the volume of main solder side weld seam, the volume of the solder fill area 3 on the secondary solder side is secondary solder side weld seam
1-1.5 times of volume；The both sides of the piston body are equipped with frock clamp 8, and the piston head 1 and piston skirt 2 pass through frock
Fixture 8 is located by connecting.
As described in Figure 5, a kind of soldering steel pistons, including piston head 1 and piston skirt 2, the piston head 1 and piston skirt 2 it
Between provided with annular inner-cooling oil recess 5, the piston head 1 and piston skirt 2 are by together with main weldering junction 4, the secondary soldering connection of solder side 9
Piston only is constituted, the main weldering junction 4 is mutually perpendicular to secondary solder side 9, L-shaped structure, and main weldering junction 4 is perpendicular to level
Face, secondary solder side 9 is parallel to horizontal plane；The main weldering junction 4 is parallel to each other with secondary solder side 9, and main weldering junction 4 is welded less than secondary
Face 9；The solder fill area 3 being equipped with the main weldering junction 4 and secondary solder side 9 in solder fill area, the main weldering junction
Volume is that the volume of the solder fill area 3 on 1-1.5 times of the volume of main solder side weld seam, the secondary solder side is secondary solder side
1-1.5 times of the volume of weld seam；The both sides of the bottom of piston head 1 are provided with locating slot 7, and the piston head 1 and piston skirt 2 pass through
Locating slot 7 is positioned.
As shown in fig. 6, a kind of soldering steel pistons, including piston head 1 and piston skirt 2, the piston head 1 and piston skirt 2 it
Between provided with annular inner-cooling oil recess 5, the piston head 1 and piston skirt 2 are by together with main weldering junction 4, the secondary soldering connection of solder side 9
Piston only is constituted, the main weldering junction 4 is mutually perpendicular to secondary solder side 9, and main weldering junction 4 is parallel to horizontal plane, secondary solder side 9
Perpendicular to horizontal plane；The solder in solder fill area 3, the main weldering junction is equipped with the main weldering junction 4 and secondary solder side 9
The volume of fill area 3 is the volume of the solder fill area 3 on 1-1.5 times of the volume of main solder side weld seam, the secondary solder side
For 1-1.5 times of the volume of secondary solder side weld seam.
A kind of manufacture method of soldering steel pistons, comprises the following steps：
(1) piston head 1 and the blank of piston skirt 2 are forged respectively, and forge the blank of alignment pin 6 with material identical with piston,
Piston material is：38MnVS6 or 42CrMoA；
(2) roughing is carried out to piston head 1 and the blank of piston skirt 2 respectively, processes inner-cooling oil recess 5, main weldering junction 4, pair
Solder side 9 and solder fill area 3；Main weldering junction 4 and the processing roughness of secondary solder side 9 are controlled between Ra3.2~Ra10, just
Flowing is sprawled between weld seam in solder；
(3) degreasing cleaning is carried out to piston head 1, piston skirt 2 and positioning slightly 6 blanks respectively, from dichloromethane
(CH2Cl2) 5~10min of cleaning agent progress ultrasonic wave cleaning；
(4) thickness is used to be layered on for 0.05~0.15mm sheet solders in main weldering junction 4 and secondary solder side 9, using particle
Spend and fill up solder fill area 3 for 80-120 mesh graininess solders, assembled up piston head 1 and piston skirt 2 by alignment pin 6；
(5) piston-top surface assembled is placed in vacuum drying oven upward and be heat-treated, welded by piston head deadweight
Connect；Vacuum drying oven starts to vacuumize, and vacuum reaches 5 × 10-2After Pa, start to warm up；It is the step of heat treatment in vacuum drying oven：From room
Temperature is raised to 750 DEG C~850 DEG C with 8~15 DEG C/min speed, is incubated 30min；Again 1050 DEG C are raised to 6 DEG C~10 DEG C of speed
~1250 DEG C of insulation 15min~60min, then furnace cooling is come out of the stove to 850 DEG C~900 DEG C and carries out Quenching Treatment immediately；
(6) after the completion of piston soldering, combustion chamber 10, the pin-and-hole 11 of piston are processed respectively.
It is not new to this practicality although above-mentioned embodiment of the present utility model is described with reference to accompanying drawing
The limitation of type protection domain, one of ordinary skill in the art should be understood that on the basis of the technical solution of the utility model, ability
Field technique personnel need not pay the various modifications that creative work can make or deform still in protection model of the present utility model
Within enclosing.
Claims (6)
1. a kind of soldering steel pistons, including piston head and piston skirt, provided with cold oil in annular between the piston head and piston skirt
Chamber, it is characterised in that the piston head and piston skirt are by constituting piston sheet together with main weldering junction, secondary solder side soldering connection
The volume for the solder fill area being equipped with body, the main weldering junction and secondary solder side in solder fill area, the main weldering junction
For 1-1.5 times of the volume of main solder side weld seam, the volume of the solder fill area on the secondary solder side is secondary solder side weld seam
1-1.5 times of volume；The piston head and piston skirt are located by connecting by positioner.
2. a kind of soldering steel pistons according to claim 1, it is characterised in that the positioner is to be arranged on secondary welding
Alignment pin on face.
3. a kind of soldering steel pistons according to claim 1, it is characterised in that the positioner is underside of the piston head two
The locating slot that side is opened.
4. a kind of soldering steel pistons according to claim 1, it is characterised in that the positioner is to be arranged on piston sheet
The frock clamp of body both sides.
5. a kind of soldering steel pistons according to claim 1, it is characterised in that the main weldering junction and secondary solder side are mutual
It is parallel and and plane-parallel, main weldering junction is less than secondary solder side.
6. a kind of soldering steel pistons according to claim 1, it is characterised in that the main weldering junction and secondary solder side are mutual
Vertically.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621416849.8U CN206343842U (en) | 2016-12-22 | 2016-12-22 | A kind of soldering steel pistons |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621416849.8U CN206343842U (en) | 2016-12-22 | 2016-12-22 | A kind of soldering steel pistons |
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| Publication Number | Publication Date |
|---|---|
| CN206343842U true CN206343842U (en) | 2017-07-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201621416849.8U Active CN206343842U (en) | 2016-12-22 | 2016-12-22 | A kind of soldering steel pistons |
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| Country | Link |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735669A (en) * | 2016-12-22 | 2017-05-31 | 山东滨州渤海活塞股份有限公司 | A kind of soldering steel pistons and manufacture method |
| DE102019203616A1 (en) * | 2019-03-18 | 2020-09-24 | Federal-Mogul Nürnberg GmbH | Pistons for an internal combustion engine |
| CN111720234A (en) * | 2019-03-21 | 2020-09-29 | 强莉莉 | Split composite piston and forming method |
-
2016
- 2016-12-22 CN CN201621416849.8U patent/CN206343842U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735669A (en) * | 2016-12-22 | 2017-05-31 | 山东滨州渤海活塞股份有限公司 | A kind of soldering steel pistons and manufacture method |
| CN106735669B (en) * | 2016-12-22 | 2022-07-05 | 滨州渤海活塞有限公司 | Brazed steel piston and manufacturing method thereof |
| DE102019203616A1 (en) * | 2019-03-18 | 2020-09-24 | Federal-Mogul Nürnberg GmbH | Pistons for an internal combustion engine |
| CN111720234A (en) * | 2019-03-21 | 2020-09-29 | 强莉莉 | Split composite piston and forming method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201021 Address after: 256602, No. twenty-one, 569 Bohai Road, Bincheng District, Shandong, Binzhou Patentee after: BINZHOU BOHAI PISTON CO., LTD. Address before: 256602 No. 21, No. 569, Bohai Road, Shandong, Binzhou Patentee before: SHANDONG BINZHOU BOHAI PISTON Co.,Ltd. |
|
| TR01 | Transfer of patent right |