CN108071515B - A kind of reproducing method of steel pistons - Google Patents
A kind of reproducing method of steel pistons Download PDFInfo
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- CN108071515B CN108071515B CN201610994780.5A CN201610994780A CN108071515B CN 108071515 B CN108071515 B CN 108071515B CN 201610994780 A CN201610994780 A CN 201610994780A CN 108071515 B CN108071515 B CN 108071515B
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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
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a kind of reproducing methods of 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 end of piston skirt is equipped with male half coupling, and inner cavity top forms the interior positioning region for repairing positioning.The following steps are included: S1: initial wash；S2: first time clamping；S3: male half coupling is repaired；S4: second clamping；S5: combustion chamber volume is reduced；S6: third time clamping；S7: steel pistons ring side is repaired；No. S8: the four clamping；S9: pin hole is repaired；S10: it is cleaned after reparation；S11: packaging.The present invention have the advantages that maintenance cost is low, can prevent the wasting of resources, can extend steel pistons using the 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 technique
Piston is one of the 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 the important means of state VI and higher standard discharge and fuel economy requirement.The main former material that steel pistons use at present
Material include: first is that cast iron (steel) material, such as: QT-600, HT300, ZG25CrMo；Second is that medium carbon structural alloy steel, such as:
40Cr, 42CrMo, 42CrMoA etc.；Third is that thermal pressure processing non-hardened and tempered steel, such as: F38MnVS (38MnVS6).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-it is quenched-finishing-surface treatment-fine purifiation-packaging.
Steel pistons structure is simple, high mechanical strength, wear-resisting property are good, the endurance service life is long, under alternation dynamic load effect,
Subject high temperature, the thermic load of high pressure and mechanical load.Research shows that piston is easy to produce the position master of abrasion and mechanical failure
Have: first is that 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 is that the concentrated wear that piston skirt and cylinder sleeve friction of motion generate.
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 this three big part of cylinder sleeve, connecting rod, crankshaft, and when a large amount of steel construction piston repairing is dropped, this is caused
The huge wasting of resources, especially Europe VI or state's VI vehicle high speed diesel engine high-volume use full steel structure piston, this wave
Take just particularly evident.
Summary 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 using the 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 invention adopts the following technical scheme:
A kind of steel pistons, including piston crown and piston skirt, the piston crown are equipped with combustion chamber and top plane, piston
The ring side on head sets spaced firepower bank and ring bank, and annular groove, the work are formed between firepower bank and ring bank and adjacent ring bank
It fills in and is equipped with inner cavity and perforative pin hole in skirt section, the bottom end of piston skirt is equipped with male half coupling, and the inner cavity top, which forms, to be used for
Repair the interior positioning region of positioning.
As a further improvement of the above technical scheme:
The interior positioning region is set to the middle position of inner cavity top, and interior positioning region is set as center hole structure.
The interior positioning region is set to two avris of inner cavity top, and interior positioning region is set as inner stopper structure.
A kind of reproducing method based on above-mentioned steel pistons, comprising the following steps:
S1: initial wash: cleaning steel pistons to be repaired, removes grease 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: it repairs male half coupling: material being carried out to male half coupling, reaches machining benchmark requirement；
S4: second clamping: clamping is carried out to steel pistons on the basis of pin hole and the male half coupling repaired and is fixed；
S5: it reduces combustion chamber volume: material being carried out to top plane, keeps engine compression ratio constant；
S6: clamping third time clamping: is carried out to steel pistons on the basis of the top plane repaired and the male half coupling repaired
It is fixed；
S7: it repairs steel pistons ring side: material being carried out to the outer diameter and annular groove of piston skirt, firepower bank and ring bank, is made
It reaches can service requirement；
No. S8: the four clamping: clamping is carried out to steel pistons on the basis of the top plane and male half coupling that repair and is fixed；
S9: it repairs pin hole: material being carried out to pin hole, reaching can service requirement；
S10: it is cleaned after reparation: the steel pistons after reparation is cleaned, remove steel cuttings and spot；
S11: packaging: the steel pistons repaired are packed.
As a further improvement of the above technical scheme:
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, it is gone using grinding
Material；In step s 9, material is carried out using boring processing.
Compared with the prior art, the advantages of the present invention are as follows:
Steel pistons of the invention first process an interior positioning region when making steel pistons, when steel pistons use a period of time
It is impaired when needing to repair, then can within positioning region and top plane be Remediation criterion, it is whole to carry out steel by the way of removing material
The problem of reparation of piston remanufactures, and can solve internal combustion engine steel pistons are not repaired during overhaul, the high-volume of steel pistons is repaired
Remanufacture again, can prevent when Internal-Combustion Engine Maintenance steel construction piston be dropped and caused by the huge wasting of resources, it is living that steel can be extended
The service life of plug saves whole maintenance cost；It overcomes steel pistons and repairs orientation problem, positioned with top plane and interior positioning region
Male half coupling is repaired, can guarantee positioning requirements when piston is repaired, realizes the mass production of steel pistons Repair gene.Base of the invention
In the reproducing method of above-mentioned steel pistons, after steel pistons run 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 be not due to cylinder sleeve, piston ring, piston pin etc.
It directly contacts, therefore is not damaged deformation substantially.In this method, within positioning region and top plane be Remediation criterion, it is whole using going
Except the reparation that the mode of material carries out steel pistons remanufactures, the problem of can solve internal combustion engine piston do not repaired during overhaul,
The high-volume reparation of steel pistons remanufactures, can prevent when Internal-Combustion Engine Maintenance steel construction piston be dropped and caused by huge resource
Waste can extend the service life of steel pistons, save whole maintenance cost；It overcomes steel pistons and repairs orientation problem, it is flat with top
Male half coupling is repaired in face and the positioning of interior positioning region, be can guarantee positioning requirements when piston is repaired, is realized the batch of steel pistons Repair gene
Metaplasia produces.
Detailed description of the invention
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 embodiment of the present invention method 1 and embodiment 2.
Each label indicates in figure:
1, piston crown；11, combustion chamber；12, plane is pushed up；13, firepower bank；14, ring bank；15, annular groove；2, piston skirt；
21, inner cavity；211, interior positioning region；22, pin hole；23, 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 section 2 is equipped with combustion chamber 11 and top plane 12 at the top of piston crown 1, and the ring side of piston crown 1 sets spaced 13 He of firepower bank
Ring bank 14 forms annular groove 15 between firepower bank 13 and ring bank 14 and adjacent ring bank 14, inner cavity 21 is equipped in piston skirt 2 and is passed through
The pin hole 22 worn, the bottom end of piston skirt 2 are equipped with male half coupling 23, the interior positioning region for repairing positioning are formed at the top of inner cavity 21
211.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 removing material
It remanufactures, the problem of can solve internal combustion engine piston is not repaired during overhaul, the high-volume reparation of steel pistons is remanufactured, and can prevent
Only when Internal-Combustion Engine Maintenance steel construction piston be dropped and caused by the huge wasting of resources, the service life of steel pistons can be extended,
Save whole maintenance cost；It overcomes steel pistons and repairs orientation problem, it is outer only with top plane 12 and the positioning reparation of interior positioning region 211
Mouth 23 can guarantee positioning requirements when piston is repaired, and realize the mass production of steel pistons Repair gene.
In the present embodiment, interior positioning region 211 is set to the middle position at 21 top of inner cavity, centered on interior positioning region 211 is arranged
Pore structure.In the structure, inner cavity 21 can be extended to tooling and withstand centre bore and push up plane 12 cooperate it is achievable to steel pistons
Set and Positioning, structure are simple and convenient 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 the basic phase of above-described embodiment 1
Together, difference is only that: in the present embodiment, interior positioning region 211 is set to two avris at 21 top of inner cavity, and interior positioning region 211 is set as
Inner stopper structure.In the structure, using inner stopper structure, inner cavity 21 can be extended to tooling and withstands inner stopper and is matched with top plane 12
The achievable Set and Positioning to steel pistons is closed, structure is simple and convenient to operate.
Embodiment of the method 1:
As shown in Figure 1, Figure 2 and shown in Fig. 5, the present invention is based on the first embodiment of the reproducing method of above-mentioned steel pistons, packets
Include following steps:
S1: initial wash: cleaning steel pistons to be repaired, removes grease 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: it repairs male half coupling 23: material being carried out to male half coupling 23, reaches machining benchmark requirement；
S4: second clamping: clamping is carried out to steel pistons on the basis of pin hole 22 and the male half coupling 23 repaired and is fixed；
S5: it reduces 11 volume of combustion chamber: material being carried out to top plane 12, keeps engine compression ratio constant；
S6: third time clamping: clamping is carried out to steel pistons on the basis of the male half coupling 23 for pushing up plane 12 and repairing and is fixed；
S7: it repairs steel pistons ring side: piston skirt 2, firepower bank 13 and the outer diameter and annular groove 15 of ring bank 14 is gone
Material, reaching can service requirement；
No. S8: the four clamping: clamping is carried out to steel pistons on the basis of the top plane 12 and male half coupling 23 that repair and is fixed；
S9: it repairs pin hole 22: material being carried out to pin hole 22, reaching can service requirement；
S10: it is cleaned after reparation: the steel pistons after reparation is cleaned, remove steel cuttings and spot；
S11: packaging: the steel pistons repaired are packed.
After steel pistons run 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 diameter of annular groove and push up plane 12 due to not with cylinder sleeve, piston ring, work
Plug pin etc. directly contacts, 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 removing material remanufactures, and can solve internal combustion engine piston during overhaul and does not repair
The high-volume reparation of multiple problem, steel pistons remanufactures, can prevent when 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 living
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, it is easy to accomplish that the processing is simple.
In the present embodiment, interior positioning region 211 is center pore structure, extends to inner cavity 21 with tooling and withstands centre bore and push up flat
Face 12 cooperates the achievable Set and Positioning to steel pistons, easy to operate.
In the present embodiment, using drilling and Milling Machining Center hole.Using drilling and Milling Process, the processing is simple is easy
It realizes.
In the present embodiment, the matching scheme of piston connecting rod unit and steel pistons reparation 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 is that 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
Circular diameter matches in diameter dimension and the cylinder sleeve of diminution；Piston ring inner diameter reductions, the size and 15 bottom diameter of annular groove of diminution contract
Small size matches.Third is that 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 guarantees that piston, piston ring, the total weight of piston pin and former design are consistent.
In the present embodiment, the matched design principle of piston connecting rod unit are as follows: compression ratio: after piston reduces cylinder diameter, stroke is kept
It is constant, reduce the volume of piston combustion bowl, to guarantee that engine compression ratio is constant；Volume: reducing cylinder diameter, displacement volume diminution,
To keep compression ratio constant, plane 12 is pushed up by grinding piston crown 1 and reduces 11 volume of piston combustion bowl, to realize and original machine one
The fuel economy and external characteristics index of cause；Compression is high: reducing 11 volume of piston combustion bowl, the compression height of piston becomes smaller；It repairs
It is when piston that the center of piston pin hole 22 is mobile far from piston crown 1 to piston skirt 2, high design requirement is compressed to meet, is protected
Compression ratio is demonstrate,proved within the scope 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 weight gain of piston pin, reaches piston, cylinder sleeve, piston ring, piston pin, the weight-matched of connecting rod and original and sets
It counts almost the same.
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, should
Reproducing method and embodiment of the method 1 are essentially identical, and difference is only that: in the present embodiment, interior positioning region 211 is inner stopper knot
Structure.Using inner stopper structure, extend to inner cavity 21 with tooling and withstand inner stopper and push up plane 12 cooperate it is achievable to steel pistons
Set and Positioning, it is easy to operate.
In the present embodiment, using Milling Process inner stopper.Using Milling Process, it is easy to accomplish that the processing is simple.
Although the present invention is disclosed as above with preferred embodiment, however, it is not intended to limit the invention.It is any to be familiar with ability
The technical staff in domain, without deviating from the scope of the technical scheme of the present invention, all using the technology contents pair of the disclosure above
Technical solution of the present invention makes many possible changes and modifications or equivalent example modified to equivalent change.Therefore, all
Without departing from the content of technical solution of the present invention, according to the present invention technical spirit any simple modification made to the above embodiment,
Equivalent variations and modification, all shall fall within the protection scope of the technical scheme of the invention.
Claims (5)
1. a kind of reproducing method of steel pistons, steel pistons include piston crown (1) and piston skirt (2), the piston crown
(1) it is equipped with combustion chamber (11) and top plane (12), the ring side of piston crown (1) sets spaced firepower bank (13) He Huanan
(14), annular groove (15) are formed between firepower bank (13) and ring bank (14) and adjacent ring bank (14), is set in the piston skirt (2)
Have an inner cavity (21) and perforative pin hole (22), the bottom end of piston skirt (2) is equipped with male half coupling (23), at the top of the inner cavity (21) at
Type has the interior positioning region (211) for repairing positioning, it is characterised in that: the following steps are included:
S1: initial wash: cleaning steel pistons to be repaired, removes grease 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: it repairs male half coupling (23): material being carried out to male half coupling (23), reaches machining benchmark requirement；
S4: second clamping: clamping is carried out to steel pistons on the basis of pin hole (22) and the male half coupling (23) repaired and is fixed；
S5: it reduces combustion chamber (11) volume: material being carried out to top plane (12), keeps engine compression ratio constant；
S6: third time clamping: steel pistons are carried out on the basis of the top plane (12) repaired and the male half coupling (23) repaired
Clamping is fixed；
S7: repair steel pistons ring side: outer diameter and annular groove (15) to piston skirt (2), firepower bank (13) and ring bank (14) into
Row removes material, and reaching can service requirement；
No. S8: the four clamping: clamping is carried out to steel pistons on the basis of the top plane (12) and male half coupling (23) that repair and is fixed；
S9: it repairs pin hole (22): material being carried out to pin hole (22), reaching can service requirement；
S10: it is cleaned after reparation: the steel pistons after reparation is cleaned, remove steel cuttings and spot；
S11: packaging: the steel pistons repaired are packed.
2. the reproducing method of steel pistons according to claim 1, it is characterised in that: the interior positioning region (211) is set to
Middle position at the top of inner cavity (21), interior positioning region (211) are set as center hole structure.
3. the reproducing method of steel pistons according to claim 1, it is characterised in that: the interior positioning region (211) is set to
Two avris at the top of inner cavity (21), interior positioning region (211) are set as inner stopper structure.
4. the reproducing method of steel pistons according to any one of claim 1 to 3, it is characterised in that: in step S10
In, after repairing cleaning, graphitization processing is carried out to piston skirt (2).
5. the reproducing method of steel pistons according to claim 4, 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 CN108071515A (en) | 2018-05-25 |
| CN108071515B true CN108071515B (en) | 2019-08-09 |
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ID=62155007
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| Application Number | Title | Priority Date | Filing Date |
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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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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
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 |
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| CN108071515A (en) | 2018-05-25 |
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