CN106736312B - A kind of manufacturing method of high intensity super abrasive cylinder sleeve - Google Patents
A kind of manufacturing method of high intensity super abrasive cylinder sleeve Download PDFInfo
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- CN106736312B CN106736312B CN201710136074.1A CN201710136074A CN106736312B CN 106736312 B CN106736312 B CN 106736312B CN 201710136074 A CN201710136074 A CN 201710136074A CN 106736312 B CN106736312 B CN 106736312B
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- cylinder sleeve
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- tufftride
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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
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Mechanical Engineering (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
Abstract
The invention discloses a kind of manufacturing methods of high-intensitive super abrasive cylinder sleeve, comprising the following steps: 1) selection is processed: according to the thickness and length of cylinder sleeve part, choosing steel pipe, the steel pipe chosen is processed into semi-finished product cylinder sleeve by numerical control strong spinning forming process；2) Precision Machining: being machined to drawing size for semi-finished product cylinder sleeve and require, and 3) tufftride processing: the cylinder sleeve progress tufftride processing after step 2) is processed, 4) milled processed: the cylinder sleeve bore after tufftride is ground；5) it polishes: the cylinder sleeve bore after grinding is processed by shot blasting.The present invention uses material of the steel pipe as cylinder sleeve, cylinder sleeve after making processing has apparent raising in tensile strength, wearability, hardness, corrosion resistance, fatigue resistance, high temperature resistant, seizure resistance, and the production process of this cylinder sleeve is simple, solves in the production of traditional cast iron cylinder sleeve the deficiency that time-consuming and laborious expense is artificial, production capacity is low etc..
Description
Technical field
The present invention relates to auto-parts field more particularly to a kind of manufacturing methods of high-intensitive super abrasive cylinder sleeve.
Background technique
Major part engine uses the cylinder jacket of cast iron quality at present, supports its intensity to reach high speed by cylinder body and transports
The demand turned.Haveed the defects that using the cylinder sleeve of cast iron quality more: 1, the production technology of Cast iron liner is excessively traditional, casting and
Heat forming processes extremely power consumption, belongs to high-risk work post, and environmental pollution is serious, and machining processes are cumbersome, and waste of material is extremely serious,
Blank and net weight ratio are 5:1；2, the bulk strength of cast iron quality is weak, and tensile strength is in every square of 220-390MPa unit；3, it casts
The wearability of iron is undesirable, and frictional resistance is big, and corrosion resistance is bad, and manufacturing cost is high, it is difficult to reach the use of high-end engine
It is required that.
Number of patent application is 201410394010.8, and patent name is a kind of steel cylinder sleeve process flow, technical solution
Are as follows: selected low-carbon seamless steel pipe blanking → stretching → is cut into overall length → flange → corase grinding outer circle → corase grinding inner circle → turning
Upper and lower seam allowance → flange → rolling → inner hole chrome → superfinishing the top gem of a girdle-pendant of seam allowance → boring inner hole → fine cylindrical → microhoning inner hole → vehicle
Grind inner hole → excircle polishing；Although its using low-carbon seamless steel pipe as material, it is its production process up to 16, time-consuming to take
Power, high production cost, there is no substantive raisings with the processing method of traditional cast iron cylinder sleeve；
Number of patent application is 200910233087.6, and patent name is a kind of manufacturing process of steel engine cylinder sleeve,
It is characterized in that: the process flow are as follows: blanking → vehicle both ends of the surface and inner stopper → boring inner hole → corase grinding outer circle → corase grinding inner circle → essence
Lower seam allowance → chromium plating → microhoning inner hole → cleaning → inspection → mark outside cylindrical grinding → flange → rolling → right boring inner hole → smart car
Knowledge → spray antirust oil → packaging → storage.Although it is its production process up to more than ten, time-consuming and laborious using steel material,
High production cost, there is no substantive raisings with the processing method of traditional cast iron cylinder sleeve.
Summary of the invention
It is simple, at low cost it is an object of the invention to provide a kind of process in place of overcoming the deficiencies in the prior art described above
High-intensitive super abrasive cylinder sleeve manufacturing method.
The present invention realizes in the following way:
A kind of manufacturing method of high intensity super abrasive cylinder sleeve, it is characterised in that: the following steps are included:
1) selection is processed: according to the thickness and length of cylinder sleeve part, choosing steel pipe, the steel pipe chosen is passed through numerical control strong
Spinning forming process is processed into semi-finished product cylinder sleeve；The numerical control strong spinning is revolved using annular spinning roller spinning process through three derotations
Pressure technique, in which: first of reduction: 40-42%, second reduction: 28-33%, third road reduction: 28-30%, it is main
Axis revolving speed: 550-800r/min, feed rate: 0.5-1mm/r；And the diameter of bore of semi-finished product cylinder sleeve is 0.05- smaller than preset value
The outer diameter of 0.08mm, semi-finished product cylinder sleeve are 0.25-0.35mm bigger than preset value, and the length dimension of semi-finished product cylinder sleeve is 4- longer than preset value
5mm；
2) Precision Machining: semi-finished product cylinder sleeve is machined to drawing size and is wanted by numerical control CNC lathe, numerical control sliding top gem of a girdle-pendant lathe
It asks, in which: the id tolerance range of cylinder sleeve are as follows: ± 0.01mm, the outer diameter tolerance range of cylinder sleeve are as follows: ± 0.015mm, the length of cylinder sleeve
Spend the margin of tolerance are as follows: ± 0.10mm, the geometric tolerance range of cylinder sleeve are as follows: circularity 0.01-0.03mm, cylindricity: 0.005-
0.015mm；The inside surface roughness and platform reticulate pattern parameter area of cylinder sleeve are as follows: Rz:6.3-1.0um, Rpk:0.18-0.25um,
Rk:0.125-0.4um, RVK:0.7-2.5um；
3) tufftride is handled: the cylinder sleeve after step 2) processing being carried out tufftride processing, specific treatment process is as follows: a, pre-
Processing: selecting RN-60-6K well formula gas nitriding furnace, and temperature is heated to 570 DEG C, is put into cylinder sleeve and seals nitriding furnace, come out of the stove side by side
Alcohol is uninterruptedly added in exhaust process for interior exhaust gas, and alcohol is instilled by the organic liquid instillator being equipped on bell, alcohol drop
Entering amount was 100 drop -120 drops/minutes, and heating promotes inside and outside cylinder sleeve temperature uniformly, and temperature is stablized at 570 DEG C, time 50-70
Minute；B, nitrogenize: after exhaust gas excludes completely, in-furnace temperature is stablized at 570 DEG C, while 100 drops are added per minute in nitriding furnace
Alcohol and 750 liters of ammonia is added per hour, and adjust furnace pressure and nitrogenized, the pressure water column of the U-shaped pressure gauge on furnace wall
Height is maintained at 30-40mm, and nitridation time is 5-6 hours；C, air-cooled: furnace pressure is discharged and is completed, cylinder sleeve is placed on vacant lot,
Carry out natural cooling；Cylinder sleeve inside and outside superficial depth of penetration >=0.20mm of tufftride, surface hardness HV 580-630；
4) milled processed: the cylinder sleeve bore after tufftride is ground using computer controlled grinding machine, makes cylinder sleeve bore
Platform reticulate pattern parameter reach Rz:2.5-4um, Rpk :≤0.18um, Rk:0.2-0.4um, Rvk:1.22-2.5um, grind energy
Reticulate pattern roughness is more refined, best oil storage profile when cylinder sleeve work is obtained；
5) polish: the cylinder sleeve bore after grinding is processed by shot blasting using digital control polishing machine tool, with remove metal fragment,
Field trash, roughness Ra0.4-0.8, tp value are 30-90%.
The invention has the advantages that: the material using steel pipe as cylinder sleeve, the cylinder sleeve after making processing is in tensile strength, wear-resisting
There is apparent raising in property, hardness, corrosion resistance, fatigue resistance, high temperature resistant, seizure resistance, and this steel cylinder sleeve
Production process is simple, and it is low to solve high-risk, power consumption, consumptive material, material unevenness, environmental pollution, production capacity in the production of traditional cast iron cylinder sleeve
Lower etc. deficiency.
Specific embodiment
The specific embodiment of the invention is described in detail:
A kind of manufacturing method of high intensity super abrasive cylinder sleeve, it is characterised in that: the following steps are included:
1) selection is processed: according to the thickness and length of cylinder sleeve part, choosing steel pipe, the steel pipe chosen is passed through numerical control strong
Spinning forming process is processed into semi-finished product cylinder sleeve；The numerical control strong spinning is revolved using annular spinning roller spinning process through three derotations
Pressure technique, in which: first of reduction: 40-42%, second reduction: 28-33%, third road reduction: 28-30%, it is main
Axis revolving speed: 550-800r/min, feed rate: 0.5-1mm/r；And the diameter of bore of semi-finished product cylinder sleeve is 0.05- smaller than preset value
The outer diameter of 0.08mm, semi-finished product cylinder sleeve are 0.25-0.35mm bigger than preset value, and the length dimension of semi-finished product cylinder sleeve is 4- longer than preset value
5mm；Shear spinning technique can make semi-finished product cylinder sleeve reach following technical requirements: a. surface roughness: outer diameter Ra1.2-1.6um,
Internal diameter Ra0.4-0.8；Dimensional accuracy: internal diameter ± 0.01mm, outer diameter ± 0.02mm；B. Material Strength changes: 1. numerical control strong revolves
Pressure belongs to cold forming processing technology, and under the action of Three-direction deformation power, the metal grain of blank attenuates, and tensile strength improves 42-
48%；2. hardness: than improving 28-32% before spinning after spinning；C. technique is advanced, process is simple: tri- work of spinning process Zhi Xu
Blank can be processed into semi-finished product cylinder sleeve by clamped one time by sequence, be processed used time 60-80 seconds；Cast iron liner blank need to use 8
Process, processing used time need 600-800 seconds；D. stock utilization is high: Cast iron liner blank is 4 with steel spinning part billet weight ratio:
1, because machining allowance is few, process is simple, to considerably reduce production cost；
2) Precision Machining: semi-finished product cylinder sleeve is machined to drawing size and is wanted by numerical control CNC lathe, numerical control sliding top gem of a girdle-pendant lathe
It asks, in which: the id tolerance range of cylinder sleeve are as follows: ± 0.01mm, the outer diameter tolerance range of cylinder sleeve are as follows: ± 0.015mm, the length of cylinder sleeve
Spend the margin of tolerance are as follows: ± 0.10mm, the geometric tolerance range of cylinder sleeve are as follows: circularity 0.01-0.03mm, cylindricity: 0.005-
0.015mm；The inside surface roughness and platform reticulate pattern parameter area of cylinder sleeve are as follows: Rz:6.3-1.0um, Rpk:0.18-0.25um,
Rk:0.125-0.4um, RVK:0.7-2.5um；
3) tufftride is handled: the cylinder sleeve after step 2) processing being carried out tufftride processing, specific treatment process is as follows: a, pre-
Processing: selecting RN-60-6K well formula gas nitriding furnace, and temperature is heated to 570 DEG C, is put into cylinder sleeve and seals nitriding furnace, come out of the stove side by side
Alcohol is uninterruptedly added in exhaust process for interior exhaust gas, and alcohol is instilled by the organic liquid instillator being equipped on bell, alcohol drop
Entering amount was 100 drop -120 drops/minutes, and heating promotes inside and outside cylinder sleeve temperature uniformly, and temperature is stablized at 570 DEG C, time 50-70
Minute；B, nitrogenize: after exhaust gas excludes completely, in-furnace temperature is stablized at 570 DEG C, while 100 drops are added per minute in nitriding furnace
Alcohol and 750 liters of ammonia is added per hour, and adjust furnace pressure and nitrogenized, the pressure water column of the U-shaped pressure gauge on furnace wall
Height is maintained at 30-40mm, and nitridation time is 5-6 hours；C, air-cooled: furnace pressure is discharged and is completed, cylinder sleeve is placed on vacant lot,
Carry out natural cooling；Cylinder sleeve inside and outside superficial depth of penetration >=0.20mm of tufftride, surface hardness HV 580-630；
4) milled processed: the cylinder sleeve bore after tufftride is ground using computer controlled grinding machine, makes cylinder sleeve bore
Platform reticulate pattern parameter reach Rz:2.5-4um, Rpk :≤0.18um, Rk:0.2-0.4um, Rvk:1.22-2.5um, grind energy
Reticulate pattern roughness is more refined, best oil storage profile when cylinder sleeve work is obtained, so as to shorten engine initial stage running-in time,
It improves service life, reduces engine oil consumption；Discharge standard reaches V or more cylinder jacket of diesel engine platform reticulate pattern roughness profile of Europe ginseng
Several technical requirements.
5) polish: the cylinder sleeve bore after grinding is processed by shot blasting using digital control polishing machine tool, with remove metal fragment,
Field trash, roughness Ra0.4-0.8, tp value are 30-90%.
The tensile strength for the cylinder sleeve that the present invention produces is 620~680MPa, and the tensile strength of Cast iron liner is 220
~390MPa.
Conventional cast cylinder sleeve will be by system cumbersome process such as sizing, the demouldings of mold, and the present invention is using molded
Steel pipe eliminate most of process as material, and the production process energy consumption of conventional cast cylinder sleeve is high, causes serious pollution to the environment.
The cylinder sleeve that the present invention produces in the performance of seizure resistance, than traditional cast iron cylinder sleeve performance improve twice with
On；In the performance of corrosion resistance, the performance than traditional cast iron cylinder sleeve is enhanced about more than once the cylinder sleeve that the present invention produces.
Cylinder sleeve of the present invention and Cast iron liner mechanical performance comparison sheet:
Can learn from upper table: the cylinder sleeve that the present invention produces is in tensile strength, hardness, rigidity layer, elasticity modulus etc.
Many-sided performance has the raising of conspicuousness relative to traditional cast iron cylinder sleeve in the performance of corresponding aspect.
Cylinder sleeve of the present invention and Cast iron liner overall target comparison sheet:
(by taking WD615 cylinder sleeve production line as an example, outer diameter: 130mm；Internal diameter: 126m；Length: 240mm)
Can be learnt from upper table: cylinder sleeve produced by the invention in process of production the cost of various aspects and performance relative to biography
System Cast iron liner is significantly improved in the performance tool of corresponding aspect；The production process of this steel cylinder sleeve is simple, solves tradition
Cast iron liner production in high-risk, power consumption, consumptive material, material unevenness, environmental pollution, production capacity lowly etc. deficiency, meet the modern times
The requirement of chemical industry.
Above-described embodiment is only used to illustrate specific implementation principle and effect of the invention, rather than is used to limit the present invention.Appoint
It is modified or is modified on the basis of the method that the personage what is familiar with industry technology can illustrate in the present invention, therefore all institutes
Belong to all for having usually intellectual in technical field and being completed without departing from the spirit and technical ideas disclosed in the present invention
Equivalent modification or change should be covered by the claims of the present invention.
Claims (3)
1. a kind of manufacturing method of high intensity super abrasive cylinder sleeve, it is characterised in that: the following steps are included:
1) selection is processed: according to the thickness and length of cylinder sleeve part, choosing steel pipe, the steel pipe chosen is passed through numerical control strong spinning
Forming technology is processed into semi-finished product cylinder sleeve；
2) Precision Machining: being machined to the requirement of drawing size for semi-finished product cylinder sleeve by numerical control CNC lathe, the sliding top gem of a girdle-pendant lathe of numerical control,
In: the id tolerance range of cylinder sleeve are as follows: ± 0.01mm, the outer diameter tolerance range of cylinder sleeve are as follows: the length of ± 0.015mm, cylinder sleeve are public
Poor range are as follows: ± 0.10mm, the geometric tolerance range of cylinder sleeve are as follows: circularity 0.01-0.03mm, cylindricity: 0.005-0.015mm；
The inside surface roughness and platform reticulate pattern parameter area of cylinder sleeve are as follows: Rz:6.3-1.0um, Rpk:0.18-0.25um, Rk:0.125-
0.4um, RVK:0.7-2.5um；
3) tufftride is handled: the cylinder sleeve after step 2) processing is carried out tufftride processing；
4) milled processed: the cylinder sleeve bore after tufftride is ground using computer controlled grinding machine, makes the flat of cylinder sleeve bore
Platform reticulate pattern parameter reaches Rz:2.5-4um, Rpk :≤0.18um, Rk:0.2-0.4um, Rvk:1.22-2.5um, grinding can be more
Reticulate pattern roughness is refined, best oil storage profile when cylinder sleeve work is obtained；
5) it polishes: the cylinder sleeve bore after grinding being processed by shot blasting using digital control polishing machine tool, to remove metal fragment, be mingled with
Object, roughness Ra0.4-0.8, tp value are 30-90%.
2. a kind of manufacturing method of high-intensitive super abrasive cylinder sleeve according to claim 1, it is characterised in that: the numerical control is strong
Power spinning is using annular spinning roller spinning process, through three derotation spinning process, in which: first of reduction: 40-42%, second
Reduction: 28-33%, third road reduction: 28-30%, the speed of mainshaft: 550-800r/min, feed rate: 0.5-1mm/r；And
The diameter of bore of semi-finished product cylinder sleeve is 0.05-0.08mm smaller than preset value, and the outer diameter of semi-finished product cylinder sleeve is 0.25- bigger than preset value
The length dimension of 0.35mm, semi-finished product cylinder sleeve are 4-5mm longer than preset value.
3. a kind of manufacturing method of high-intensitive super abrasive cylinder sleeve according to claim 1, it is characterised in that: the tufftride
The specific treatment process of processing is as follows: a, pretreatment: selecting RN-60-6K well formula gas nitriding furnace, temperature is heated to 570 DEG C, puts
Enter cylinder sleeve and seal nitriding furnace, alcohol is uninterruptedly added in interior exhaust gas of coming out of the stove side by side in exhaust process, alcohol on bell by being equipped with
Organic liquid instillator instill, alcohol infusion volume was 100 drop -120 drops/minutes, and heating promotes inside and outside cylinder sleeve temperature uniformly,
Temperature is stablized at 570 DEG C, and the time is 50-70 minutes；B, nitrogenize: after exhaust gas excludes completely, in-furnace temperature is stablized at 570 DEG C, together
When the alcohol of 100 drops is added per minute in nitriding furnace and 750 liters of ammonia is added per hour, and adjust furnace pressure and nitrogenized,
The pressure water-column of U-shaped pressure gauge on furnace wall is maintained at 30-40mm, and nitridation time is 5-6 hours；C, air-cooled: by furnace pressure
Release is completed, and cylinder sleeve is placed on vacant lot, carries out natural cooling；The cylinder sleeve inside and outside superficial depth of penetration of tufftride >=
0.20mm, surface hardness HV 580-630.
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| CN201710136074.1A CN106736312B (en) | 2017-03-08 | 2017-03-08 | A kind of manufacturing method of high intensity super abrasive cylinder sleeve |
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| CN106736312B true CN106736312B (en) | 2019-02-19 |
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| CN110394607B (en) * | 2019-08-21 | 2020-10-30 | 中原内配集团安徽有限责任公司 | Process for improving cutting performance of cylinder sleeve material |
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2017
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| SU1632728A1 (en) * | 1988-12-28 | 1991-03-07 | Научно-Производственное Объединение Технологии Автомобильной Промышленности | Method of machining internal combustion engine cylindr liner |
| CN101319721A (en) * | 2008-06-13 | 2008-12-10 | 淮阴工学院 | Technical standard of cylinder cover inner hole platform honing reticulate pattern based on three-dimension |
| CN101476091A (en) * | 2009-01-16 | 2009-07-08 | 江苏爱吉斯海珠机械有限公司 | Pipe drawing continuous casting thin wall cylinder jacket and foundry technique thereof |
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