CN107420215A - A kind of inner surface of cylinder liner processing method - Google Patents
A kind of inner surface of cylinder liner processing method Download PDFInfo
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- CN107420215A CN107420215A CN201710613877.1A CN201710613877A CN107420215A CN 107420215 A CN107420215 A CN 107420215A CN 201710613877 A CN201710613877 A CN 201710613877A CN 107420215 A CN107420215 A CN 107420215A
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- Prior art keywords
- permeation
- cylinder liner
- cylinder sleeve
- cylinder
- processing method
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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
- F02F1/00—Cylinders; Cylinder heads
- F02F1/004—Cylinder liners
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/45—Coating or impregnating, e.g. injection in masonry, partial coating of green or fired ceramics, organic coating compositions for adhering together two concrete elements
- C04B41/52—Multiple coating or impregnating multiple coating or impregnating with the same composition or with compositions only differing in the concentration of the constituents, is classified as single coating or impregnation
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B41/00—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone
- C04B41/80—After-treatment of mortars, concrete, artificial stone or ceramics; Treatment of natural stone of only ceramics
- C04B41/81—Coating or impregnation
- C04B41/89—Coating or impregnation for obtaining at least two superposed coatings having different compositions
-
- 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
- F02F2200/00—Manufacturing
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The present invention relates to a kind of inner surface of cylinder liner processing method, cylinder sleeve is sent into salt bath after 300 ~ 350 DEG C of preheatings and carries out salt bath permeation processing, is cleaned after salt bath permeation processing, removes the salt and carbon on surface after cylinder sleeve permeation；Then one layer of diffusion medium is uniformly smeared in inner surface of cylinder liner, cylinder sleeve is placed on lathe carrying roller, plasma torch nozzle is inserted inside cylinder sleeve again, cylinder sleeve makees System of Rotating about Fixed Axis motion under the drive of flat idler, plasma torch nozzle is done reciprocating linear motion, and helical form hardenability band is scanned in processed inner surface of cylinder liner.For cylinder sleeve after inner surface of cylinder liner processing method of the present invention processing, it has excellent anti-wear performance, and relative to traditional cylinder sleeve, its wearability improves 29.8% ~ 32.2%, and 24.7% ~ 26.3% is improved with auxiliary piston ring wearability.
Description
Technical field
The present invention relates to cylinder sleeve technical field, more particularly to a kind of inner surface of cylinder liner processing method.
Background technology
Cylinder sleeve is exactly the abbreviation of cylinder jacket, and it is set in the cylinder barrel of cylinder body, and combustion chamber is collectively constituted with piston and cylinder cap.Cylinder
Set is divided into dry sleeve and the major class of wet sleeve two.The back side does not contact the cylinder jacket of cooling water dry sleeve, the back side and cooling water contact
Cylinder jacket be wet sleeve.It is dry sleeve thinner thickness, simple in construction, easy to process.Wet sleeve directly contacts cooling water, so having
Beneficial to the cooling of engine, be advantageous to the miniaturization of engine.
Vibration, piston accelerated wear test, gas leakage, burn oil and the efficiency of combustion of the height of quality of the cylinder liner to engine etc. is main
Index has direct influence, current insulating ceramic cylinder sleeve, interior surface of cylinder liner coating silicon carbide, hard chrome plating, electric deposition nickel phosphorus
Alloy, thermal spraying antifriction alloy, the technology such as case-carbonizing and laser transformation hardening, but the most technology of these handling process is answered
Miscellaneous, cost is high, and deformation is big, and yield rate and productivity ratio are low.
The content of the invention
The present invention is in view of the deficienciess of the prior art, provide a kind of inner surface of cylinder liner processing method, particular technique side
Case is as follows：
A kind of inner surface of cylinder liner processing method, comprises the following steps：
Step 1: first permeation
Cylinder sleeve is sent into salt bath after 300 ~ 350 DEG C of preheatings and carries out salt bath permeation processing, and salt temperature is 510 ~ 520 DEG C, salt
The mass concentration of cyanate radical is 30 ~ 40% in bath, permeation 90 ~ 100 minutes, is cleaned after salt bath permeation processing, after removing cylinder sleeve permeation
The salt and carbon on surface；
Step 2: secondary permeation
Inner surface of cylinder liner after being handled by step 1 uniformly smears one layer of diffusion medium, and cylinder sleeve then is placed in into lathe carrying roller
On, then by inside plasma torch nozzle insertion cylinder sleeve, cylinder sleeve makees System of Rotating about Fixed Axis motion, plasmatorch under the drive of flat idler
Nozzle does reciprocating linear motion, and scans helical form hardenability band in processed inner surface of cylinder liner, that is, completes secondary permeation process.
As the improvement of above-mentioned technical proposal, the diffusion medium is by boron carbide powder, boron nitride powder, Graphene powder, fluoboric acid
Potassium, rare earth ferrosilicon alloy powder, machine oil are well mixed to be made.
As the improvement of above-mentioned technical proposal, boron carbide powder, boron nitride powder, Graphene powder, fluoboric acid in the diffusion medium
Potassium, rare earth ferrosilicon alloy powder, the quality proportioning of machine oil are（33~36）:（56~60）:（3~3.5）:（1.1~1.3）:（5.8~
6.3）:（120~130）.
As the improvement of above-mentioned technical proposal, the rare earth ferrosilicon alloy powder is by ferrosilicon, cerium, rare earth samarium, calcium, the pig iron
According to mass ratio（39~41）:（1.2~1.5）:（2.3~2.5）:（0.2~0.3）:（47~49）Ratio dispensing through high-temperature fusion system
It is made again by crushing into alloy.
As the improvement of above-mentioned technical proposal, the particle diameter of the rare earth ferrosilicon alloy powder is less than 0.5 μm.
As the improvement of above-mentioned technical proposal, the particle diameter of the boron carbide powder is less than 0.5 μm.
As the improvement of above-mentioned technical proposal, the particle diameter of the boron nitride powder is less than 0.5 μm.
As the improvement of above-mentioned technical proposal, the particle diameter of the Graphene powder is less than 0.5 μm.
Beneficial effects of the present invention：After inner surface of cylinder liner processing method of the present invention processing, it has excellent cylinder sleeve
Different anti-wear performance, relative to traditional cylinder sleeve, its wearability improves 29.8% ~ 32.2%, is improved with auxiliary piston ring wearability
24.7%~26.3%。
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, with reference to embodiments, to the present invention
It is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, it is not used to
Limit the present invention.
Embodiment 1
Step 1: first permeation
Cylinder sleeve is sent into salt bath after 300 ~ 350 DEG C of preheatings and carries out salt bath permeation processing, and salt temperature is 510 ~ 520 DEG C, salt
The mass concentration of cyanate radical is 30 ~ 40% in bath, permeation 90 ~ 100 minutes, is cleaned after salt bath permeation processing, after removing cylinder sleeve permeation
The salt and carbon on surface；
Step 2: secondary permeation
Inner surface of cylinder liner after being handled by step 1 uniformly smears one layer of diffusion medium, and cylinder sleeve then is placed in into lathe carrying roller
On, then by inside plasma torch nozzle insertion cylinder sleeve, cylinder sleeve makees System of Rotating about Fixed Axis motion, plasmatorch under the drive of flat idler
Nozzle does reciprocating linear motion, and scans helical form hardenability band in processed inner surface of cylinder liner, that is, completes secondary permeation process.
Wherein, the diffusion medium is less than 0.5 μ by boron carbide powder of the 33 parts by weight particle diameters less than 0.5 μm, 56 parts by weight particle diameters
The Graphene powder of m boron nitride powder, 3 parts by weight particle diameters less than 0.5 μm, potassium fluoborate, the 5.8 parts by weight particle diameters of 1.1 parts by weight
The machine oil of rare earth ferrosilicon alloy powder, 120 parts by weight less than 0.5 μm is well mixed to be made.The rare earth ferrosilicon alloy powder is by silicon
Iron, cerium, rare earth samarium, calcium, the pig iron are according to mass ratio 39:1.2:2.3:0.2:Conjunction is made through high-temperature fusion in 47 ratio dispensing
Gold is made by crushing again.
By NJ127-2001《Cylinder jacket, piston ring accelerated wear test method》Regulation, with not making just permeation and secondary
The same type cylinder sleeve of permeation processing compares：Cylinder sleeve by just permeation of the present invention and secondary permeation processing has excellent
Anti-wear performance, compared with not making the cylinder sleeve of first permeation and secondary permeation processing, its wearability improves 31.7%, with auxiliary piston ring
Wearability improves 26.3%.
Embodiment 2
Step 1: first permeation
Cylinder sleeve is sent into salt bath after 330 DEG C of preheatings and carries out salt bath permeation processing, and salt temperature is 515 DEG C, cyanic acid in salt bath
The mass concentration of root is 35%, permeation 95 minutes, is cleaned after salt bath permeation processing, removes the salt and carbon on surface after cylinder sleeve permeation；
Step 2: secondary permeation
Inner surface of cylinder liner after being handled by step 1 uniformly smears one layer of diffusion medium, and cylinder sleeve then is placed in into lathe carrying roller
On, then by inside plasma torch nozzle insertion cylinder sleeve, cylinder sleeve makees System of Rotating about Fixed Axis motion, plasmatorch under the drive of flat idler
Nozzle does reciprocating linear motion, and scans helical form hardenability band in processed inner surface of cylinder liner, that is, completes secondary permeation process.
Wherein, the diffusion medium is less than 0.5 μ by boron carbide powder of the 35 parts by weight particle diameters less than 0.5 μm, 58 parts by weight particle diameters
The Graphene powder of m boron nitride powder, 3.3 parts by weight particle diameters less than 0.5 μm, potassium fluoborate, the 6 parts by weight particle diameters of 1.2 parts by weight
The machine oil of rare earth ferrosilicon alloy powder, 125 parts by weight less than 0.5 μm is well mixed to be made.The rare earth ferrosilicon alloy powder is by silicon
Iron, cerium, rare earth samarium, calcium, the pig iron are according to mass ratio 40:1.3:2.4:0.3:Conjunction is made through high-temperature fusion in 49 ratio dispensing
Gold is made by crushing again.
By NJ127-2001《Cylinder jacket, piston ring accelerated wear test method》Regulation, with not making just permeation and secondary
The same type cylinder sleeve of permeation processing compares：Cylinder sleeve by just permeation of the present invention and secondary permeation processing has excellent
Anti-wear performance, compared with not making the cylinder sleeve of first permeation and secondary permeation processing, its wearability improves 32.2%, with auxiliary piston ring
Wearability improves 24.9%.
Embodiment 3
Step 1: first permeation
Cylinder sleeve is sent into salt bath after 350 DEG C of preheatings and carries out salt bath permeation processing, and salt temperature is 520 DEG C, cyanic acid in salt bath
The mass concentration of root is 40%, permeation 100 minutes, is cleaned after salt bath permeation processing, removes the salt and carbon on surface after cylinder sleeve permeation；
Step 2: secondary permeation
Inner surface of cylinder liner after being handled by step 1 uniformly smears one layer of diffusion medium, and cylinder sleeve then is placed in into lathe carrying roller
On, then by inside plasma torch nozzle insertion cylinder sleeve, cylinder sleeve makees System of Rotating about Fixed Axis motion, plasmatorch under the drive of flat idler
Nozzle does reciprocating linear motion, and scans helical form hardenability band in processed inner surface of cylinder liner, that is, completes secondary permeation process.
Wherein, the diffusion medium is less than 0.5 μ by boron carbide powder of the 36 parts by weight particle diameters less than 0.5 μm, 60 parts by weight particle diameters
The Graphene powder of m boron nitride powder, 3.5 parts by weight particle diameters less than 0.5 μm, potassium fluoborate, the 6.3 parts by weight grains of 1.3 parts by weight
Rare earth ferrosilicon alloy powder of the footpath less than 0.5 μm, the machine oil of 130 parts by weight are well mixed and are made.The rare earth ferrosilicon alloy powder by
Ferrosilicon, cerium, rare earth samarium, calcium, the pig iron are according to mass ratio 41:1.5:2.5:0.3:49 ratio dispensing is made through high-temperature fusion
Alloy is made by crushing again.
By NJ127-2001《Cylinder jacket, piston ring accelerated wear test method》Regulation, with not making just permeation and secondary
The same type cylinder sleeve of permeation processing compares：Cylinder sleeve by just permeation of the present invention and secondary permeation processing has excellent
Anti-wear performance, compared with not making the cylinder sleeve of first permeation and secondary permeation processing, its wearability improves 29.8%, with auxiliary piston ring
Wearability improves 24.7%.
In the above-described embodiments, cylinder sleeve passes through carries out just permeation processing in salt bath, relative to common salt bath permeation
Processing, salt temperature of the invention reduces 20 ~ 50 DEG C, while the salt and carbon on surface after removing cylinder sleeve permeation, to cylinder sleeve
Inner surface tentatively hardened.Then and the inner surface that tentatively hardens on the basis of, then utilize using diffusion medium
Plasma flare carries out secondary permeation, and this not only causes the work that the raising of hardenability band hardness, structure refinement, multicomponent thermochemical treatment are strengthened
With while being also due to a large amount of graphenes in hardenability band, graphene is the material for the maximum intensity being currently known, while its pole
High intensity and pliability, at room temperature best electrical and thermal conductivity cause graphene while with self-lubricating function, not shadow
The wearability of hardenability band is rung, so as to improve the service life of cylinder sleeve.
In diffusion medium, boron carbide powder and boron nitride powder are boron supplying agent, and boron carbide has that density is low, intensity is big, high temperature
The characteristics of stability and good chemical stability.Boron nitride has good thermal conductivity, is a kind of superhard material, contributes to follow-up
Improve the wearability of hardenability band.Potassium fluoborate is activator, and rare earth ferrosilicon alloy powder is reducing agent, in rare earth ferrosilicon alloy powder
In, cerium and rare earth samarium have a performance for preventing thermal fission and improving institutional framework, cerium also serve as in itself reducing agent and
Catalyst, improve the heat resistance of hardenability band.Rare earth samarium easily with nonmetalloid chemical combination, promotes in hardenability band combination inner surface of cylinder liner
Nonmetalloid, promote hardenability band be molded and combined with inner surface of cylinder liner.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
All any modification, equivalent and improvement made within refreshing and principle etc., should be included in the scope of the protection.
Claims (8)
1. a kind of inner surface of cylinder liner processing method, it is characterised in that comprise the following steps：
Step 1: first permeation
Cylinder sleeve is sent into salt bath after 300 ~ 350 DEG C of preheatings and carries out salt bath permeation processing, and salt temperature is 510 ~ 520 DEG C, salt
The mass concentration of cyanate radical is 30 ~ 40% in bath, permeation 90 ~ 100 minutes, is cleaned after salt bath permeation processing, after removing cylinder sleeve permeation
The salt and carbon on surface；
Step 2: secondary permeation
Inner surface of cylinder liner after being handled by step 1 uniformly smears one layer of diffusion medium, and cylinder sleeve then is placed in into lathe carrying roller
On, then by inside plasma torch nozzle insertion cylinder sleeve, cylinder sleeve makees System of Rotating about Fixed Axis motion, plasmatorch under the drive of flat idler
Nozzle does reciprocating linear motion, and scans helical form hardenability band in processed inner surface of cylinder liner, that is, completes secondary permeation process.
A kind of 2. inner surface of cylinder liner processing method according to claim 1, it is characterised in that：The diffusion medium is by boron carbide
Powder, boron nitride powder, Graphene powder, potassium fluoborate, rare earth ferrosilicon alloy powder, machine oil are well mixed to be made.
A kind of 3. inner surface of cylinder liner processing method according to claim 2, it is characterised in that：Boron carbide in the diffusion medium
Powder, boron nitride powder, Graphene powder, potassium fluoborate, rare earth ferrosilicon alloy powder, the quality proportioning of machine oil are（33~36）:（56~60）:
（3~3.5）:（1.1~1.3）:（5.8~6.3）:（120~130）.
A kind of 4. inner surface of cylinder liner processing method according to claim 3, it is characterised in that：The rare earth ferrosilicon alloy powder
By ferrosilicon, cerium, rare earth samarium, calcium, the pig iron according to mass ratio（39~41）:（1.2~1.5）:（2.3~2.5）:（0.2~0.3）:
（47~49）Ratio dispensing alloy be made through high-temperature fusion be made again by crushing.
A kind of 5. inner surface of cylinder liner processing method according to claim 4, it is characterised in that：The rare earth ferrosilicon alloy powder
Particle diameter be less than 0.5 μm.
A kind of 6. inner surface of cylinder liner processing method according to claim 3, it is characterised in that：The particle diameter of the boron carbide powder
Less than 0.5 μm.
A kind of 7. inner surface of cylinder liner processing method according to claim 3, it is characterised in that：The particle diameter of the boron nitride powder
Less than 0.5 μm.
A kind of 8. inner surface of cylinder liner processing method according to claim 3, it is characterised in that：The particle diameter of the Graphene powder
Less than 0.5 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710613877.1A CN107420215A (en) | 2017-07-25 | 2017-07-25 | A kind of inner surface of cylinder liner processing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710613877.1A CN107420215A (en) | 2017-07-25 | 2017-07-25 | A kind of inner surface of cylinder liner processing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107420215A true CN107420215A (en) | 2017-12-01 |
Family
ID=60430563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710613877.1A Pending CN107420215A (en) | 2017-07-25 | 2017-07-25 | A kind of inner surface of cylinder liner processing method |
Country Status (1)
| Country | Link |
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Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1477321A (en) * | 2003-03-28 | 2004-02-25 | 余宪章 | cylinder sleeve preparation process |
-
2017
- 2017-07-25 CN CN201710613877.1A patent/CN107420215A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1477321A (en) * | 2003-03-28 | 2004-02-25 | 余宪章 | cylinder sleeve preparation process |
Non-Patent Citations (1)
| Title |
|---|
| 王守忠: "柴油机气缸套等离子多元共渗研究", 《热加工工艺》 * |
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Application publication date: 20171201 |