CN108067808B - A kind of reproducing method of steel pistons - Google Patents
A kind of reproducing method of steel pistons Download PDFInfo
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- CN108067808B CN108067808B CN201610993356.9A CN201610993356A CN108067808B CN 108067808 B CN108067808 B CN 108067808B CN 201610993356 A CN201610993356 A CN 201610993356A CN 108067808 B CN108067808 B CN 108067808B
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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
Abstract
The invention discloses a kind of reproducing method of steel pistons, a kind of method is 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 repairs steel pistons ring side；No. S8: the four clamping；S9: pin hole is repaired；S10: it is cleaned after reparation；S11: packaging.Another method is the following steps are included: S1: initial wash；S2: first time clamping；S3: positioning datum in processing；S4: second clamping；S5: male half coupling is repaired；S6: third time clamping；S7: combustion chamber volume is reduced；No. S8: the four clamping；S9: steel pistons ring side is repaired；No. S10: the five clamping；S11: pin hole is repaired；S12: it is cleaned after reparation；S13: 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 sides of remanufacturing of steel pistons
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 hole deformation, abrasion 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 VI Ge state of Europe 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 and use time, the reproducing method for the steel pistons for being able to batch Repair gene.
In order to solve the above technical problems, the invention adopts the following technical scheme:
A kind of reproducing method of steel pistons, the steel pistons include piston crown and piston skirt, the piston crown
Spaced firepower bank and ring bank are set equipped with combustion chamber and top plane, the ring side of piston crown, firepower bank and ring bank and adjacent
Annular groove is formed between ring bank, and inner cavity and perforative pin hole are equipped in the piston skirt, the bottom end of piston skirt is equipped with male half coupling,
The following steps are included:
S1: initial wash: cleaning steel pistons to be repaired, removes grease stain and other spots；
S2: first time clamping: clamping is carried out to steel pistons on the basis of one of groove bottom diameter and top plane and is fixed；
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, de-material is carried out using grinding
Material；In step s 9, material is carried out using boring processing.
A kind of reproducing method of steel pistons, the steel pistons include piston crown and piston skirt, the piston crown
Spaced firepower bank and ring bank are set equipped with combustion chamber and top plane, the ring side of piston crown, firepower bank and ring bank and adjacent
Annular groove is formed between ring bank, and inner cavity and perforative pin hole are equipped in the piston skirt, the bottom end of piston skirt is equipped with male half coupling,
The following steps are included:
S1: initial wash: cleaning steel pistons to be repaired, removes grease stain and other spots；
S2: first time clamping: clamping is carried out to steel pistons on the basis of one of groove bottom diameter and top plane and is fixed；
S3: an interior positioning region positioning datum in processing: is processed to inner cavity top；
S4: second clamping: within positioning region and top plane on the basis of to steel pistons carry out clamping fix；
S5: it repairs male half coupling: material being carried out to male half coupling, reaches machining benchmark requirement；
S6: third time clamping: clamping is carried out to steel pistons on the basis of pin hole and the male half coupling repaired and is fixed；
S7: it reduces combustion chamber volume: material being carried out to top plane, keeps engine compression ratio constant；
No. S8: the four clamping: clamping is carried out to steel pistons on the basis of the top plane repaired and the male half coupling repaired
It is fixed；
S9: 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. S10: the five clamping: clamping is carried out to steel pistons on the basis of the top plane and male half coupling that repair and is fixed；
S11: it repairs pin hole: material being carried out to pin hole, reaching can service requirement；
S12: it is cleaned after reparation: the steel pistons after reparation is cleaned, remove steel cuttings and spot；
S13: packaging: the steel pistons repaired are packed.
As a further improvement of the above technical scheme:
In step s 12, after cleaning after reparation, graphitization processing is carried out to piston skirt.
In step S5 and S9, material is carried out using turnery processing；In the step s 7, de-material is carried out using grinding
Material；In step s 11, material is carried out using boring processing.
In step s3, the interior positioning region is processed to the center of inner cavity top, the interior positioning region is center hole
Structure.
In step s3, using centre bore described in drilling and Milling Process.
In step s3, the interior positioning region is processed to two avris of inner cavity top, the interior positioning region is inner stopper knot
Structure.
In step s3, using inner stopper described in Milling Process.
Compared with the prior art, the advantages of the present invention are as follows:
The reproducing method of steel pistons of the invention, after steel pistons run a period of time, main abrasion or variant part
Position be annular groove, pin hole, skirt section, firepower bank, ring bank and male half coupling, and groove bottom diameter and push up plane due to not with cylinder sleeve, piston
Ring, piston pin etc. directly contact, therefore it is not damaged deformation substantially.In this method, with groove bottom diameter and top plane for first primordium
Standard, the whole reparation that steel pistons are carried out by the way of removing material remanufacture, and can solve internal combustion engine piston during overhaul
The high-volume reparation of the problem of not repairing, steel pistons remanufactures, and steel construction piston when Internal-Combustion Engine Maintenance can be prevented to be dropped and make
At the huge wasting of resources, can extend steel pistons uses the time, saves whole maintenance cost；It is fixed to overcome steel pistons reparation
Position problem repairs male half coupling with top plane and groove bottom diameter positioning, can guarantee positioning requirements when piston is repaired, realizes that steel pistons are repaired
It is added with the mass production of work.
Detailed description of the invention
Fig. 1 is the main cross section structure diagram of steel pistons in the embodiment of the present invention 1.
Fig. 2 is the flow chart of the embodiment of the present invention 1.
Fig. 3 is the main cross section structure diagram of steel pistons in the embodiment of the present invention 2.
Fig. 4 is the side schematic cross-sectional view of steel pistons in the embodiment of the present invention 2.
Fig. 5 is the flow chart of the embodiment of the present invention 2 and embodiment 3.
Fig. 6 is the main cross section structure diagram of steel pistons in the embodiment of the present invention 3.
Fig. 7 is the present invention looks up structural representation of steel pistons in the embodiment of the present invention 3.
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.
Embodiment 1:
As depicted in figs. 1 and 2, the first embodiment of the reproducing method of steel pistons of the present invention, steel pistons include piston
Head 1 and piston skirt 2, piston crown 1 are equipped with combustion chamber 11 and top plane 12, and the ring side of piston crown 1 sets spaced fire
Power bank 13 and ring bank 14 form annular groove 15, are equipped in piston skirt 2 interior between firepower bank 13 and ring bank 14 and adjacent ring bank 14
The bottom end of chamber 21 and perforative pin hole 22, piston skirt 2 is equipped with male half coupling 23, comprising the following steps:
S1: initial wash: cleaning steel pistons to be repaired, removes grease stain and other spots；
S2: first time clamping: clamping is carried out to steel pistons on the basis of one of 15 bottom diameter of annular groove and top plane 12 and is consolidated
It is fixed；
S3: it repairs male half coupling 23: material being carried out to male half coupling 23, reaches positioning datum 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: 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: 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.It is initial baseline with 15 bottom diameter of annular groove and top plane 12 in this method,
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 internal combustion engine steel construction piston be dropped and caused by it is huge
The wasting of resources, can extend steel pistons uses the time, saves whole maintenance cost；It overcomes steel pistons and repairs orientation problem, use
It pushes up plane 12 and male half coupling 23 is repaired in the positioning of 15 bottom diameter of annular groove, can guarantee positioning requirements when piston is repaired, realize steel pistons reparation
The mass production of processing.
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, 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 piston pin external diameter, reduces and lives
Plug pin inner hole realizes the weight gain of piston pin, reaches the weight-matched and former design of piston, cylinder sleeve, piston ring, piston pin, connecting rod
It is almost the same.
Embodiment 2:
Fig. 3 to Fig. 5 shows second of embodiment of the reproducing method of steel pistons of the present invention, and steel pistons include piston head
Portion 1 and piston skirt 2, piston crown 1 are 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 form annular groove 15, are equipped with inner cavity in piston skirt 2 between firepower bank 13 and ring bank 14 and adjacent ring bank 14
21 and perforative pin hole 22, the bottom end of piston skirt 2 is equipped with male half coupling 23, comprising the following steps:
S1: initial wash: cleaning steel pistons to be repaired, removes grease stain and other spots；
S2: first time clamping: clamping is carried out to steel pistons on the basis of one of 15 bottom diameter of annular groove and top plane 12 and is consolidated
It is fixed；
S3: positioning datum in processing: to one interior positioning region 211 of processing at the top of inner cavity 21；
S4: second clamping: within positioning region 211 and top plane 12 on the basis of to steel pistons carry out clamping fix；
S5: it repairs male half coupling 23: material being carried out to male half coupling 23, reaches positioning datum requirement；
S6: third time 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；
S7: it reduces 11 volume of combustion chamber: material being carried out to top plane 12, keeps engine compression ratio constant；
No. S8: the four 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；
S9: 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. S10: the five 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 consolidated
It is fixed；
S11: it repairs pin hole 22: material being carried out to pin hole 22, reaching can service requirement；
S12: it is cleaned after reparation: the steel pistons after reparation is cleaned, remove steel cuttings and spot；
S13: 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.It is initial baseline with 15 bottom diameter of annular groove and top plane 12 in this method,
First process an interior positioning region 211, then within positioning region 211 and top plane 12 be Remediation criterion, it is whole using removal material
The problem of reparation that mode carries out steel pistons remanufactures, and can solve internal combustion engine piston is not repaired during overhaul, steel pistons
High-volume is repaired and is remanufactured, can prevent when Internal-Combustion Engine Maintenance steel construction piston be dropped and caused by the huge wasting of resources, energy
Extend steel pistons uses the time, saves whole maintenance cost；It overcomes steel pistons and repairs orientation problem, with top plane 12 and interior
Male half coupling 23 is repaired in the positioning of positioning region 211, can guarantee positioning requirements when piston is repaired, and realizes the mass of steel pistons Repair gene
Production.
In the present embodiment, in step s 13, 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 S5 and S9, material is carried out using turnery processing；In the step s 7, using grinding
Processing carries out material；In step s 11, material is carried out using boring processing.In step S5 and S9, step S7 and step
Turning, grinding and boring processing are respectively adopted in S11, it is easy to accomplish that the processing is simple.
In the present embodiment, in step s3, interior positioning region 211, interior positioning region are processed to the center at 21 top of inner cavity
211 be center pore structure.Inner cavity 21, which is extended to, with tooling and withstands centre bore and pushes up plane 12 cooperates the achievable dress to steel pistons
Position is clamped, it is easy to operate.
In the present embodiment, in step s3, using drilling and Milling Machining Center hole.Using drilling and Milling Process,
It is easy to accomplish that the processing is simple.
Embodiment 3:
Fig. 5 to Fig. 7 shows the third embodiment of the reproducing method of steel pistons of the present invention, the reproducing method and reality
Apply that example 2 is essentially identical, and difference is only that: in the present embodiment, in step s3, to positioning in the two avris processing at 21 top of inner cavity
Portion 211, interior positioning region 211 are inner stopper structure.Using inner stopper structure, inner cavity 21 is extended to tooling and withstands inner stopper and top
Plane 12 cooperates the achievable Set and Positioning to steel pistons, easy to operate.
In the present embodiment, in step s3, using Milling Process inner stopper.Using Milling Process, the processing is simple is easy
It realizes.
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 (10)
1. a kind of reproducing method of steel pistons, the steel pistons include piston crown (1) and piston skirt (2), the piston
Be equipped with combustion chamber (11) and top plane (12) at the top of head (1), the ring side of piston crown (1) set spaced firepower bank (13) and
Ring bank (14) forms annular groove (15) between firepower bank (13) and ring bank (14) and adjacent ring bank (14), the piston skirt (2)
Interior to be equipped with inner cavity (21) and perforative pin hole (22), the bottom end of piston skirt (2) is equipped with male half coupling (23), it is characterised in that: packet
Include following steps:
S1: initial wash: cleaning steel pistons to be repaired, removes grease stain and other spots；
S2: first time clamping: clamping is carried out to steel pistons on the basis of one of annular groove (15) bottom diameter and top plane (12) and is consolidated
It is fixed；
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: in step slo, repair cleaning
Afterwards, graphitization processing is carried out to piston skirt (2).
3. the reproducing method of steel pistons according to claim 2, 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.
4. a kind of reproducing method of steel pistons, the steel pistons include piston crown (1) and piston skirt (2), the piston
Be equipped with combustion chamber (11) and top plane (12) at the top of head (1), the ring side of piston crown (1) set spaced firepower bank (13) and
Ring bank (14) forms annular groove (15) between firepower bank (13) and ring bank (14) and adjacent ring bank (14), the piston skirt (2)
Interior to be equipped with inner cavity (21) and perforative pin hole (22), the bottom end of piston skirt (2) is equipped with male half coupling (23), it is characterised in that: packet
Include following steps:
S1: initial wash: cleaning steel pistons to be repaired, removes grease stain and other spots；
S2: first time clamping: clamping is carried out to steel pistons on the basis of one of annular groove (15) bottom diameter and top plane (12) and is consolidated
It is fixed；
S3: positioning datum in processing: to one interior positioning region (211) of processing at the top of inner cavity (21)；
S4: second clamping: within positioning region (211) and top plane (12) on the basis of to steel pistons carry out clamping fix；
S5: it repairs male half coupling (23): material being carried out to male half coupling (23), reaches machining benchmark requirement；
S6: third time 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；
S7: it reduces combustion chamber (11) volume: material being carried out to top plane (12), keeps engine compression ratio constant；
No. S8: the four 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；
S9: 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. S10: the five 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 consolidated
It is fixed；
S11: it repairs pin hole (22): material being carried out to pin hole (22), reaching can service requirement；
S12: it is cleaned after reparation: the steel pistons after reparation is cleaned, remove steel cuttings and spot；
S13: 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 s 12, repair cleaning
Afterwards, graphitization processing is carried out to piston skirt (2).
6. the reproducing method of steel pistons according to claim 5, it is characterised in that: in step S5 and S9, using vehicle
It cuts processing and carries out material；In the step s 7, material is carried out using grinding；In step s 11, using boring process into
Row removes material.
7. the reproducing method of the steel pistons according to any one of claim 4 to 6, it is characterised in that: in step s3,
The interior positioning region (211) is processed to the center at the top of inner cavity (21), the interior positioning region (211) is center pore structure.
8. the reproducing method of steel pistons according to claim 7, it is characterised in that: in step s3, using drilling and
Centre bore described in Milling Process.
9. the reproducing method of the steel pistons according to any one of claim 4 to 6, it is characterised in that: in step s3,
The interior positioning region (211) is processed to two avris at the top of inner cavity (21), the interior positioning region (211) is inner stopper structure.
10. the reproducing method of steel pistons according to claim 9, it is characterised in that: in step s3, using milling plus
Inner stopper described in work.
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| CN201610993356.9A CN108067808B (en) | 2016-11-11 | 2016-11-11 | A kind of reproducing method of steel pistons |
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| CN201610993356.9A CN108067808B (en) | 2016-11-11 | 2016-11-11 | A kind of reproducing method of steel pistons |
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| CN108067808A CN108067808A (en) | 2018-05-25 |
| CN108067808B true CN108067808B (en) | 2019-08-30 |
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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 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US1956454A (en) * | 1933-08-01 | 1934-04-24 | Charles P Long Sr | Piston expander |
| DE102004056519B4 (en) * | 2004-11-24 | 2017-07-13 | Mahle Gmbh | Method for producing a piston for an internal combustion engine |
| CN101389848A (en) * | 2007-01-17 | 2009-03-18 | 丹尼斯·天 林 | A piston of an internal combustion engine |
| CN101092914A (en) * | 2007-07-20 | 2007-12-26 | 山东滨州渤海活塞股份有限公司 | Welding type single piece piston in forged steel with close internal cooling oil pocket and fabricating method |
| CN201187358Y (en) * | 2008-05-08 | 2009-01-28 | 山东滨州渤海活塞股份有限公司 | Forged steel integrated piston made by laser welding with closed internal cooling oil cavity |
| CN201865784U (en) * | 2010-11-29 | 2011-06-15 | 徐飞 | Piston for liquefied petroleum gas engine of fork truck |
| CN102922214B (en) * | 2012-11-29 | 2017-12-15 | 唐山开滦广汇设备制造有限公司 | A kind of bore area injury repair technique of cylinder parts |
| US20170057023A1 (en) * | 2015-08-26 | 2017-03-02 | Caterpillar Inc. | Piston and Method of Piston Remanufacturing |
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2016
- 2016-11-11 CN CN201610993356.9A patent/CN108067808B/en active Active
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