CN108071515A - A kind of reproducing method of steel pistons and the steel pistons - Google Patents
A kind of reproducing method of steel pistons and the steel pistons Download PDFInfo
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- CN108071515A CN108071515A CN201610994780.5A CN201610994780A CN108071515A CN 108071515 A CN108071515 A CN 108071515A CN 201610994780 A CN201610994780 A CN 201610994780A CN 108071515 A CN108071515 A CN 108071515A
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- steel pistons
- piston
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- repair
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
- F02F3/00—Pistons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P6/00—Restoring or reconditioning objects
- B23P6/02—Pistons or cylinders
Abstract
The invention discloses a kind of steel pistons and the reproducing methods of the steel pistons, steel pistons include piston crown and piston skirt, piston crown is equipped with combustion chamber and top plane, the ring side of piston crown sets spaced firepower bank and ring bank, annular groove is formed between firepower bank and ring bank and adjacent ring bank, inner cavity and perforative pin hole are equipped in piston skirt, the bottom of piston skirt is equipped with male half coupling, and inner cavity top forms to repair the interior positioning region of positioning.Comprise the following steps：S1：Initial wash；S2：First time clamping；S3：Repair male half coupling；S4：Second of clamping；S5：Reduce combustion chamber volume；S6：Third time clamping；S7：Repair steel pistons ring side；S8：No. the 4th clamping；S9：Repair pin hole；S10：It is cleaned after reparation；S11：Packaging.The present invention has the advantages that maintenance cost is low, can prevent the wasting of resources, can extend steel pistons usage time, be able to batch Repair gene.
Description
Technical field
The invention mainly relates to the secondary recovery technique of engine movements friction more particularly to a kind of steel pistons and the steel pistons
Reproducing method.
Background technology
Piston is one of key components and parts of diesel emission upgrading, and it is automobile-used bavin that steel construction piston, which substitutes constructed of aluminium piston,
Oil machine meets state VI and the important means of higher standard discharge and fuel economy requirement.The main former material that steel pistons use at present
Material includes：First, cast iron（Steel）Material, such as：QT-600, HT300, ZG25CrMo etc.；Second is that medium carbon structural alloy steel, such as：
40Cr, 42CrMo, 42CrMoA etc.；Third, thermal pressure processing non-hardened and tempered steel, such as：F38MnVS (38MnVS6) etc..Wherein：
42CrMoA, F38MnVS show excellent mixed economy and technical characteristic, and use is relatively broad.The technique road of piston manufacture
Line：Forging（Casting）- annealing-preliminary working-semifinishing-is quenched-finishing-surface treatment-fine purifiation-packaging.
Steel pistons are simple in structure, high mechanical strength, wear-resisting property are good, endurance long lifespan, under alternation dynamic load effect,
Subject high temperature, the thermic load of high pressure and mechanical load.Research shows that piston easily generates the position master of abrasion and mechanical failure
Have：When under high temperature, high mechanical load effect, the abrasion of piston ring groove, the abrasion of firepower bank and the deformation of ring bank；Two
It is pin bore wear, deformation under mechanical load effect；Third, the concentrated wear that piston skirt is generated with cylinder sleeve friction of motion.
Being difficult to repair idea by conventional aluminum piston material limited fatigue life piston is influenced, and engine movements frictions is secondary
Reparation is also only confined on cylinder sleeve, connecting rod, bent axle this three big part, and when substantial amounts of steel construction piston repairing is dropped, this is caused
The huge wasting of resources, particularly Europe VI or state's VI vehicle high speed diesel engine high-volume are using full steel structure piston, this wave
Take just particularly evident.
The content of the invention
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, provide that a kind of maintenance cost is low, can prevent
The wasting of resources can extend steel pistons usage time, be able to batch the steel pistons of Repair gene and the reproducing method of the steel pistons.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of steel pistons, including piston crown and piston skirt, the piston crown is equipped with combustion chamber and top plane, piston crown
Ring side set spaced firepower bank and ring bank, annular groove, the piston skirt are formed between firepower bank and ring bank and adjacent ring bank
Inner cavity and perforative pin hole are equipped in portion, the bottom of piston skirt is equipped with male half coupling, and the inner cavity top forms to repair
The interior positioning region of positioning.
As being further improved for above-mentioned technical proposal：
The interior positioning region is arranged on the centre position of inner cavity top, and interior positioning region is arranged to center hole structure.
The interior positioning region is arranged on two avris of inner cavity top, and interior positioning region is arranged to inner stopper structure.
A kind of reproducing method based on above-mentioned steel pistons, comprises the following steps：
S1：Initial wash：Steel pistons to be repaired are cleaned, remove oil stain and other spots；
S2：First time clamping：Within positioning region and top plane on the basis of to steel pistons carry out clamping fix；
S3：Repair male half coupling：Material is carried out to male half coupling, reaches machining benchmark requirement；
S4：Second of clamping：Clamping is carried out on the basis of pin hole and the male half coupling repaired to steel pistons to fix；
S5：Reduce combustion chamber volume：Material is carried out to top plane, makes engine compression ratio constant；
S6：Third time clamping：Clamping is carried out on the basis of the top plane repaired and the male half coupling repaired to steel pistons to fix；
S7：Repair steel pistons ring side：Material is carried out to piston skirt, firepower bank and the outer diameter and annular groove of ring bank, reaches it
To can service requirement；
S8：No. the 4th clamping：Clamping is carried out on the basis of the top plane and male half coupling that repair to steel pistons to fix；
S9：Repair pin hole：Material is carried out to pin hole, reaching can service requirement；
S10：It is cleaned after reparation：Steel pistons after reparation are cleaned, remove steel cuttings and spot；
S11：Packaging：The steel pistons repaired are packed.
As being further improved for above-mentioned technical proposal：
In step slo, after repairing cleaning, graphitization processing is carried out to piston skirt.
In step S3 and S7, material is carried out using turnery processing；In step s 5, gone using grinding
Material；In step s 9, material is carried out using boring processing.
Compared with prior art, the advantage of the invention is that：
The steel pistons of the present invention when making steel pistons, first process an interior positioning region, when steel pistons are impaired using a period of time
When needing to repair, then can within positioning region and top plane be Remediation criterion, it is whole to carry out steel pistons by the way of material is removed
Reparation remanufacture, can solve the problems, such as that internal combustion engine steel pistons during overhaul are not repaired, the high-volume of steel pistons is repaired again
Manufacture, can prevent steel construction piston during Internal-Combustion Engine Maintenance be dropped and caused by the huge wasting of resources, steel pistons can be extended
Service life saves whole maintenance cost；It overcomes steel pistons and repairs orientation problem, repaired with top plane and the positioning of interior positioning region
Male half coupling can guarantee positioning requirements when piston is repaired, and realize the mass production of steel pistons Repair gene.The present invention based on upper
State the reproducing method of steel pistons, after steel pistons operation a period of time, main abrasion or deformation position are annular groove, pin hole,
Skirt section, firepower bank, ring bank and male half coupling, and groove bottom diameter and top plane are due to direct not with cylinder sleeve, piston ring, piston pin etc.
Contact, therefore deformation is not damaged substantially.In this method, within positioning region and top plane be Remediation criterion, it is whole using removal material
The reparation that the mode of material carries out steel pistons remanufactures, and can solve the problems, such as that internal combustion engine piston during overhaul is not repaired, and steel is lived
The high-volume reparation of plug remanufactures, can prevent steel construction piston during Internal-Combustion Engine Maintenance be dropped and caused by huge resource wave
Take, the service life of steel pistons can be extended, save whole maintenance cost；It overcomes steel pistons and repairs orientation problem, with top plane
It is positioned with interior positioning region and repairs male half coupling, can guarantee positioning requirements when piston is repaired, realize the mass of steel pistons Repair gene
Production.
Description of the drawings
Fig. 1 is the main cross section structure diagram of steel pistons embodiment 1 of the present invention.
Fig. 2 is the side schematic cross-sectional view of steel pistons embodiment 1 of the present invention.
Fig. 3 is the main cross section structure diagram of steel pistons embodiment 2 of the present invention.
Fig. 4 is the present invention looks up structural representation of steel pistons embodiment 2 of the present invention.
Fig. 5 is the flow chart of the method for the present invention embodiment 1 and embodiment 2.
Each label represents in figure：
1st, piston crown；11st, combustion chamber；12nd, plane is pushed up；13rd, firepower bank；14th, ring bank；15th, annular groove；2nd, piston skirt；21st, it is interior
Chamber；211st, interior positioning region；22nd, pin hole；23rd, male half coupling.
Specific embodiment
The present invention is described in further details below with reference to Figure of description and specific embodiment.
Steel pistons embodiment 1：
As depicted in figs. 1 and 2, the first embodiment of steel pistons of the present invention, the steel pistons include piston crown 1 and piston skirt
2,1 top of piston crown is equipped with combustion chamber 11 and top plane 12, and the ring side of piston crown 1 sets spaced firepower bank 13 and ring bank
14, annular groove 15 is formed between firepower bank 13 and ring bank 14 and adjacent ring bank 14, piston skirt 2 is interior equipped with inner cavity 21 and perforative
Pin hole 22, the bottom of piston skirt 2 are equipped with male half coupling 23, and 21 top of inner cavity forms to repair the interior positioning region 211 of positioning.
When making steel pistons, an interior positioning region 211 is first processed, when steel pistons are damaged using a period of time to be needed to repair, then can
Within positioning region 211 and top plane 12 be Remediation criterion, the whole reparation that steel pistons are carried out by the way of material is removed is made again
It makes, can solve the problems, such as that internal combustion engine piston during overhaul is not repaired, the high-volume reparation of steel pistons remanufactures, and can prevent interior
When combustion engine is repaired steel construction piston be dropped and caused by the huge wasting of resources, the service life of steel pistons can be extended, saved
Whole maintenance cost；It overcomes steel pistons and repairs orientation problem, male half coupling is repaired with top plane 12 and the positioning of interior positioning region 211
23, it can guarantee positioning requirements when piston is repaired, realize the mass production of steel pistons Repair gene.
In the present embodiment, interior positioning region 211 is arranged on the centre position at 21 top of inner cavity, centered on interior positioning region 211 is set
Pore structure.In the structure, inner cavity 21 can be extended with frock and withstands centre bore and the top cooperation of plane 12 can complete to steel pistons
Set and Positioning, it is simple in structure, easy to operate.
Steel pistons embodiment 2：
As shown in Figure 3 and Figure 4, second of embodiment of steel pistons of the present invention, the steel pistons and above-described embodiment 1 are essentially identical,
It differs only in：In the present embodiment, interior positioning region 211 is arranged on two avris at 21 top of inner cavity, and interior positioning region 211 is arranged to interior and stops
Mouth structure.In the structure, using inner stopper structure, inner cavity 21 can be extended with frock and withstands inner stopper can with the top cooperation of plane 12
The Set and Positioning to steel pistons is completed, it is simple in structure, easy to operate.
Embodiment of the method 1：
As shown in Figure 1, Figure 2 with shown in Fig. 5, the present invention is based on the first embodiment of the reproducing method of above-mentioned steel pistons, including with
Lower step：
S1：Initial wash：Steel pistons to be repaired are cleaned, remove oil stain and other spots；
S2：First time clamping：Within positioning region 211 and top plane 12 on the basis of to steel pistons carry out clamping fix；
S3：Repair male half coupling 23：Material is carried out to male half coupling 23, reaches machining benchmark requirement；
S4：Second of clamping：Clamping is carried out on the basis of pin hole 22 and the male half coupling 23 repaired to steel pistons to fix；
S5：Reduce 11 volume of combustion chamber：Material is carried out to top plane 12, makes engine compression ratio constant；
S6：Third time clamping：Clamping is carried out on the basis of the male half coupling 23 for pushing up plane 12 and repairing to steel pistons to fix；
S7：Repair steel pistons ring side：Material is carried out to piston skirt 2, firepower bank 13 and the outer diameter and annular groove 15 of ring bank 14,
Reaching can service requirement；
S8：No. the 4th clamping：Clamping is carried out on the basis of the top plane 12 and male half coupling 23 that repair to steel pistons to fix；
S9：Repair pin hole 22：Material is carried out to pin hole 22, reaching can service requirement；
S10：It is cleaned after reparation：Steel pistons after reparation are cleaned, remove steel cuttings and spot；
S11：Packaging：The steel pistons repaired are packed.
After steel pistons operation a period of time, main abrasion or deformation position are annular groove 15, pin hole 22 and piston skirt
Portion 2, firepower bank 13 and ring bank 14 and male half coupling 23, and 15 bottom footpath of annular groove and push up plane 12 due to not with cylinder sleeve, piston ring, work
Plug pin etc. contacts directly, therefore is not damaged deformation substantially.In this method, within positioning region 211 and top plane 12 be Remediation criterion,
The whole reparation that steel pistons are carried out by the way of material is removed remanufactures, and can solve internal combustion engine piston during overhaul and not repair
The problem of multiple, the high-volume reparation of steel pistons remanufactures, can prevent during Internal-Combustion Engine Maintenance steel construction piston be dropped and caused by
The huge wasting of resources can extend the service life of steel pistons, save whole maintenance cost；Steel pistons reparation positioning is overcome to ask
Topic repairs male half coupling 23 with top plane 12 and the positioning of interior positioning region 211, can guarantee positioning requirements when piston is repaired, realizes that steel is lived
Fill in the mass production of Repair gene.
In the present embodiment, in step slo, after repairing cleaning, graphitization processing is carried out to piston skirt 2.Using the stone
After blackization processing, the greasy property of piston skirt is improved.
In the present embodiment, in step S3 and S7, material is carried out using turnery processing；In step s 5, using grinding
Processing carries out material；In step s 9, material is carried out using boring processing.In step S3 and S7, step S5 and step
Turning, grinding and boring processing are respectively adopted in S9, processing is simple easy to implement.
In the present embodiment, pore structure centered on interior positioning region 211 extends inner cavity 21 with frock and withstands centre bore and put down with top
Face 12 coordinates the Set and Positioning that can be completed to steel pistons, easy to operate.
In the present embodiment, using drilling and Milling Machining Center hole.Using drilling and Milling Process, processing is simple easy
It realizes.
In the present embodiment, matching scheme and the steel pistons reparation of piston connecting rod unit are adapted：Cylinder sleeve, piston ring, piston pin,
The matching for the working face that connecting rod etc. contacts each other with steel pistons, mainly：Circular diameter reduces in cylinder sleeve, piston ring increases, lives
The diminution of plug ring overall diameter, piston ring inner diameter reductions, piston pin external diameter increase, and gudgeon pin bore diameter reduces, in small end of connecting rod
Bore dia increases.First, circular diameter reduces in cylinder sleeve, the size that the size of diminution is reduced with piston external diameter matches.Second is that piston
Ring increases, and the size that the size increased is increased with 15 width of annular groove matches；Piston ring overall diameter reduces, outside the piston ring of diminution
Diameter dimension matches with circular diameter in the cylinder sleeve reduced；Piston ring inner diameter reductions, size and the 15 bottom footpath of annular groove of diminution are contracted
Small size matches.Third, piston pin external diameter increases, the size that the size of increasing is increased with pin hole 22 matches；In piston pin
Bore dia reduces, and ensures that piston, piston ring, the total weight of piston pin are consistent with former design.
In the present embodiment, the matched design principle of piston connecting rod unit is：Compression ratio：After piston reduces cylinder diameter, stroke is kept
It is constant, reduce the volume of piston combustion bowl, to ensure that engine compression ratio is constant；Volume：Cylinder diameter, displacement volume diminution are reduced,
To keep compression ratio constant, diminution 11 volume of piston combustion bowl of plane 12 is pushed up by being ground piston crown 1, to realize and former machine one
The fuel economy of cause and external characteristics index；Compression is high：11 volume of piston combustion bowl is reduced, the compression height of piston becomes smaller；It repairs
The center of piston pin hole 22 to piston skirt 2 away from piston crown 1 is moved during piston, high design requirement is compressed to meet, protects
Compression ratio is demonstrate,proved in the range of design requirement；Weight：Piston diameter reduces, and piston weight reduces, and increases the diminution of piston pin external diameter
Gudgeon pin bore realizes the weightening of piston pin, reaches piston, cylinder sleeve, piston ring, piston pin, the weight-matched of connecting rod and original and sets
It counts basically identical.
Embodiment of the method 2：
As shown in Fig. 3, Fig. 4 and Fig. 5, the present invention is based on second of embodiments of the reproducing method of above-mentioned steel pistons, this makes again
It makes method and embodiment of the method 1 is essentially identical, differ only in：In the present embodiment, interior positioning region 211 is inner stopper structure.It adopts
With inner stopper structure, extending inner cavity 21 with frock and withstanding inner stopper and the top cooperation of plane 12 can complete to determine the clamping of steel pistons
Position, it is easy to operate.
In the present embodiment, using Milling Process inner stopper.Using Milling Process, processing is simple easy to implement.
Although the present invention is disclosed as above with preferred embodiment, the present invention is not limited to.It is any to be familiar with ability
The technical staff in domain, in the case where not departing from technical solution of the present invention scope, all using the technology contents pair of the disclosure above
Technical solution of the present invention makes many possible changes and modifications or is revised as the equivalent embodiment of equivalent variations.Therefore, it is every
Without departing from the content of technical solution of the present invention, according to the technology of the present invention essence to any simple modification made for any of the above embodiments,
Equivalent variations and modification should all fall in the range of technical solution of the present invention protection.
Claims (6)
1. a kind of steel pistons, including piston crown（1）And piston skirt（2）, the piston crown（1）Equipped with combustion chamber（11）And
Push up plane（12）, piston crown（1）Ring side set spaced firepower bank（13）With ring bank（14）, firepower bank（13）With ring bank
（14）And adjacent ring bank（14）Between form annular groove（15）, the piston skirt（2）It is interior to be equipped with inner cavity（21）With perforative pin
Hole（22）, piston skirt（2）Bottom be equipped with male half coupling（23）, it is characterised in that：The inner cavity（21）Top, which forms, to be used for
Repair the interior positioning region of positioning（211）.
2. steel pistons according to claim 1, it is characterised in that：The interior positioning region（211）Arranged on inner cavity（21）Top
Centre position, interior positioning region（211）It is arranged to center hole structure.
3. steel pistons according to claim 1, it is characterised in that：The interior positioning region（211）Arranged on inner cavity（21）Top
Two avris, interior positioning region（211）It is arranged to inner stopper structure.
4. a kind of reproducing method of the steel pistons based on any one of claims 1 to 3, it is characterised in that：Including with
Lower step：
S1：Initial wash：Steel pistons to be repaired are cleaned, remove oil stain and other spots；
S2：First time clamping：Within positioning region（211）With top plane（12）On the basis of to steel pistons carry out clamping fix；
S3：Repair male half coupling（23）：To male half coupling（23）Material is carried out, reaches machining benchmark requirement；
S4：Second of clamping：With pin hole（22）With the male half coupling repaired（23）On the basis of to steel pistons carry out clamping fix；
S5：Reduce combustion chamber（11）Volume：To pushing up plane（12）Material is carried out, makes engine compression ratio constant；
S6：Third time clamping：With the top plane repaired（12）With the male half coupling repaired（23）On the basis of to steel pistons carry out
Clamping is fixed；
S7：Repair steel pistons ring side：To piston skirt（2）, firepower bank（13）With ring bank（14）Outer diameter and annular groove（15）Into
Row removes material, and reaching can service requirement；
S8：No. the 4th clamping：With the top plane repaired（12）And male half coupling（23）On the basis of to steel pistons carry out clamping fix；
S9：Repair pin hole（22）：To pin hole（22）Material is carried out, reaching can service requirement；
S10：It is cleaned after reparation：Steel pistons after reparation are cleaned, remove steel cuttings and spot；
S11：Packaging：The steel pistons repaired are packed.
5. the reproducing method of steel pistons according to claim 4, it is characterised in that：In step slo, cleaning is repaired
Afterwards, to piston skirt（2）Carry out graphitization processing.
6. the reproducing method of steel pistons according to claim 5, it is characterised in that：In step S3 and S7, using vehicle
It cuts processing and carries out material；In step s 5, material is carried out using grinding；In step s 9, using boring process into
Row removes material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610994780.5A CN108071515B (en) | 2016-11-11 | 2016-11-11 | A kind of reproducing method of steel pistons |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610994780.5A CN108071515B (en) | 2016-11-11 | 2016-11-11 | A kind of reproducing method of steel pistons |
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| Publication Number | Publication Date |
|---|---|
| CN108071515A true CN108071515A (en) | 2018-05-25 |
| CN108071515B CN108071515B (en) | 2019-08-09 |
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ID=62155007
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| CN201610994780.5A Active CN108071515B (en) | 2016-11-11 | 2016-11-11 | A kind of reproducing method of steel pistons |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112548506A (en) * | 2020-12-11 | 2021-03-26 | 湖南江滨机器（集团）有限责任公司 | Remanufacturing method of steel piston |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202732138U (en) * | 2012-06-26 | 2013-02-13 | 常州科普动力机械有限公司 | Piston of direct injection type diesel engine |
| CN203296948U (en) * | 2013-05-17 | 2013-11-20 | 力源活塞工业集团股份有限公司 | Gasoline engine piston capable of preventing excessive abrasion |
| CN105986923A (en) * | 2015-02-09 | 2016-10-05 | 强哲菲 | Steel piston with double oil chambers and machining method thereof |
-
2016
- 2016-11-11 CN CN201610994780.5A patent/CN108071515B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202732138U (en) * | 2012-06-26 | 2013-02-13 | 常州科普动力机械有限公司 | Piston of direct injection type diesel engine |
| CN203296948U (en) * | 2013-05-17 | 2013-11-20 | 力源活塞工业集团股份有限公司 | Gasoline engine piston capable of preventing excessive abrasion |
| CN105986923A (en) * | 2015-02-09 | 2016-10-05 | 强哲菲 | Steel piston with double oil chambers and machining method thereof |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112548506A (en) * | 2020-12-11 | 2021-03-26 | 湖南江滨机器（集团）有限责任公司 | Remanufacturing method of steel piston |
| CN112548506B (en) * | 2020-12-11 | 2022-07-05 | 湖南江滨机器（集团）有限责任公司 | Remanufacturing method of steel piston |
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| CN108071515B (en) | 2019-08-09 |
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