CN106736312A - A kind of manufacture method of high intensity super abrasive cylinder sleeve - Google Patents
A kind of manufacture method of high intensity super abrasive cylinder sleeve Download PDFInfo
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- CN106736312A CN106736312A CN201710136074.1A CN201710136074A CN106736312A CN 106736312 A CN106736312 A CN 106736312A CN 201710136074 A CN201710136074 A CN 201710136074A CN 106736312 A CN106736312 A CN 106736312A
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- cylinder sleeve
- 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)
- Cylinder Crankcases Of Internal Combustion Engines (AREA)
- Pistons, Piston Rings, And Cylinders (AREA)
Abstract
The invention discloses a kind of manufacture method of high intensity super abrasive cylinder sleeve, comprise the following steps：1) selection processing：According to the thickness and length of cylinder sleeve part, steel pipe is chosen, the steel pipe that will be chosen is processed into semi-finished product cylinder sleeve by numerical control strong spinning forming process；2) Precision Machining：Semi-finished product cylinder sleeve is machined to the requirement of drawing size, 3) tufftride treatment：By step 2) processing after cylinder sleeve carry out tufftride treatment, 4) milled processed：Treatment is ground to the cylinder sleeve bore after tufftride；5) polish：Cylinder sleeve bore after grinding is processed by shot blasting.The present invention uses steel pipe as the material of cylinder sleeve, the cylinder sleeve after processing is set to have 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, the deficiency of the aspects such as the expense that wasted time and energy during traditional cast iron cylinder sleeve is produced is artificial, production capacity is low is solved.
Description
Technical field
The present invention relates to auto-parts field, more particularly to a kind of manufacture method of high intensity super abrasive cylinder sleeve.
Background technology
Major part engine uses the cylinder jacket of cast iron quality at present, and it supports its intensity to reach fortune at a high speed by cylinder body
The demand for turning.There is more defect using the cylinder sleeve of cast iron quality：1st, 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 is 5 with net weight ratio：1；2nd, the bulk strength of cast iron quality is weak, and tensile strength is in every square of 220-390MPa unit；3rd, cast
The wearability of iron is undesirable, and frictional resistance is big, and corrosion resistance is not good, is more expensive to manufacture, 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, its technical scheme
For：The low-carbon (LC) seamless steel pipe blanking that will be chosen → stretch → cut overall length → flange → corase grind is cylindrical → corase grind inner circle → turning
Upper and lower seam → flange → rolling → inner hole chrome → superfinishing the top gem of a girdle-pendant of seam → boring endoporus → fine cylindrical → microhoning endoporus → car
Mill endoporus → excircle polishing；Although it is using low-carbon (LC) seamless steel pipe as material, its production process up to 16 is time-consuming to take
Power, production cost is high, does not have substantial raising 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, its
It is characterised by：The technological process is：Blanking → car both ends of the surface and inner stopper → boring endoporus → corase grind it is cylindrical → corase grind inner circle → essence
Lower seam → chromium plating → microhoning endoporus → cleaning → inspection → mark outside cylindrical grinding → flange → rolling → right boring endoporus → smart car
Know → spray antirust oil → packaging → storage.Although it is using steel material, its production process up to more than ten wastes time and energy,
Production cost is high, does not have substantial raising with the processing method of traditional cast iron cylinder sleeve.
The content of the invention
There is provided that a kind of operation is simple, low cost it is an object of the invention to overcome above-mentioned weak point of the prior art
High intensity super abrasive cylinder sleeve manufacture method.
The present invention is realized in the following way：
A kind of manufacture method of high intensity super abrasive cylinder sleeve, it is characterised in that：Comprise the following steps：
1) selection processing：According to the thickness and length of cylinder sleeve part, steel pipe is chosen, the steel pipe that will be chosen passes 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 road derotations
Pressure technique, wherein：First reduction：40-42%, second reduction：28-33%, the 3rd road reduction：28-30%, it is main
Rotating speed：550-800r/min, feed rate：0.5-1mm/r；And the diameter of bore of semi-finished product cylinder sleeve 0.05- smaller than preset value
0.08mm, the external diameter 0.25-0.35mm bigger than preset value of semi-finished product cylinder sleeve, the length dimension 4- more long than preset value of semi-finished product cylinder sleeve
5mm；
2) Precision Machining：By numerical control CNC lathes, semi-finished product cylinder sleeve is machined to drawing size by numerical control cunning top gem of a girdle-pendant lathe will
Ask, wherein：The id tolerance scope of cylinder sleeve is：± 0.01mm, the outer diameter tolerance scope of cylinder sleeve is：± 0.015mm, the length of cylinder sleeve
Spending the margin of tolerance is：± 0.10mm, the form and position tolerance scope of cylinder sleeve is：Circularity 0.01-0.03mm, cylindricity：0.005-
0.015mm；The inside surface roughness and platform reticulate pattern parameter area of cylinder sleeve be：Rz:6.3-1.0um, Rpk:0.18-0.25um,
Rk:0.125-0.4um, RVK:0.7-2.5um；
3) tufftride treatment：By step 2) processing after cylinder sleeve carry out tufftride treatment, specific handling process is as follows：It is a, pre-
Treatment：From RN-60-6K well formula gas nitriding furnaces, temperature is heated to 570 DEG C, is put into cylinder sleeve and seals nitriding furnace, comes out of the stove side by side
Interior waste gas, uninterrupted in exhaust process to add alcohol, alcohol to be instilled by the organic liquid instillator being equipped with bell, alcohol drop
It was 100 drop -120 drops/minutes to enter amount, and heating promotes uniform inside and outside cylinder sleeve temperature, and at 570 DEG C, the time is 50-70 to temperature stabilization
Minute；B, nitridation：After waste gas is excluded totally, in-furnace temperature stabilization is at 570 DEG C, while adding 100 to drip toward per minute in nitriding furnace
Alcohol and add 750 liters of ammonia per hour, and adjust furnace pressure and nitrogenized, the pressure water column of the U-shaped pressure gauge on furnace wall
30-40mm is highly maintained at, nitridation time is 5-6 hours；C, air cooling：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 >=the 0.20mm of tufftride, case hardness HV 580-630；
4) milled processed：Treatment is ground using computer controlled grinding machine to the cylinder sleeve bore after tufftride, 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, grinds energy
Reticulate pattern roughness is more refined, optimal oil storage profile when cylinder sleeve works is obtained；
5) polish：Cylinder sleeve bore after grinding is processed by shot blasting using digital control polishing machine tool, with remove metal fragment,
Field trash, roughness is Ra0.4-0.8, and tp values are 30-90%.
The invention has the advantages that：Using steel pipe as the material of cylinder sleeve, make the cylinder sleeve after processing 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, solves high-risk, power consumption in the production of traditional cast iron cylinder sleeve, consumptive material, material inequality, environmental pollution, production capacity low
The deficiency of inferior aspect.
Specific embodiment
The specific embodiment of the invention is described in detail in detail：
A kind of manufacture method of high intensity super abrasive cylinder sleeve, it is characterised in that：Comprise the following steps：
1) selection processing：According to the thickness and length of cylinder sleeve part, steel pipe is chosen, the steel pipe that will be chosen passes 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 road derotations
Pressure technique, wherein：First reduction：40-42%, second reduction：28-33%, the 3rd road reduction：28-30%, it is main
Rotating speed：550-800r/min, feed rate：0.5-1mm/r；And the diameter of bore of semi-finished product cylinder sleeve 0.05- smaller than preset value
0.08mm, the external diameter 0.25-0.35mm bigger than preset value of semi-finished product cylinder sleeve, the length dimension 4- more long than preset value of semi-finished product cylinder sleeve
5mm；Shear spinning technique can make semi-finished product cylinder sleeve reach following technical requirements：A. surface roughness：External diameter Ra1.2-1.6um,
Internal diameter Ra0.4-0.8；Dimensional accuracy：Internal diameter ± 0.01mm, external diameter ± 0.02mm；B. Material Strength change：1. numerical control strong rotation
Pressure belongs to cold forming processing technology, and in the presence 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, operation is simple：The road works of spinning operation Zhi Xu tri-
Blank can be processed into semi-finished product cylinder sleeve by sequence by clamped one time, process used time 60-80 second；Cast iron liner blank need to use 8 roads
Operation, the processing used time needs 600-800 seconds；D. stock utilization is high：Cast iron liner blank is 4 with steel spinning part billet weight ratio:
1, because allowance is few, operation is simple, so as to considerably reduce production cost；
2) Precision Machining：By numerical control CNC lathes, semi-finished product cylinder sleeve is machined to drawing size by numerical control cunning top gem of a girdle-pendant lathe will
Ask, wherein：The id tolerance scope of cylinder sleeve is：± 0.01mm, the outer diameter tolerance scope of cylinder sleeve is：± 0.015mm, the length of cylinder sleeve
Spending the margin of tolerance is：± 0.10mm, the form and position tolerance scope of cylinder sleeve is：Circularity 0.01-0.03mm, cylindricity：0.005-
0.015mm；The inside surface roughness and platform reticulate pattern parameter area of cylinder sleeve be：Rz:6.3-1.0um, Rpk:0.18-0.25um,
Rk:0.125-0.4um, RVK:0.7-2.5um；
3) tufftride treatment：By step 2) processing after cylinder sleeve carry out tufftride treatment, specific handling process is as follows：It is a, pre-
Treatment：From RN-60-6K well formula gas nitriding furnaces, temperature is heated to 570 DEG C, is put into cylinder sleeve and seals nitriding furnace, comes out of the stove side by side
Interior waste gas, uninterrupted in exhaust process to add alcohol, alcohol to be instilled by the organic liquid instillator being equipped with bell, alcohol drop
It was 100 drop -120 drops/minutes to enter amount, and heating promotes uniform inside and outside cylinder sleeve temperature, and at 570 DEG C, the time is 50-70 to temperature stabilization
Minute；B, nitridation：After waste gas is excluded totally, in-furnace temperature stabilization is at 570 DEG C, while adding 100 to drip toward per minute in nitriding furnace
Alcohol and add 750 liters of ammonia per hour, and adjust furnace pressure and nitrogenized, the pressure water column of the U-shaped pressure gauge on furnace wall
30-40mm is highly maintained at, nitridation time is 5-6 hours；C, air cooling：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 >=the 0.20mm of tufftride, case hardness HV 580-630；
4) milled processed：Treatment is ground using computer controlled grinding machine to the cylinder sleeve bore after tufftride, 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, grinds energy
Reticulate pattern roughness is more refined, optimal oil storage profile when cylinder sleeve works is obtained, so as to shorten engine initial stage running-in time,
Service life is improved, engine oil consumption is reduced；Discharge standard reaches the cylinder jacket of diesel engine platform reticulate pattern roughness profile ginseng of Europe more than V
Several technical requirements.
5) polish：Cylinder sleeve bore after grinding is processed by shot blasting using digital control polishing machine tool, with remove metal fragment,
Field trash, roughness is Ra0.4-0.8, and tp values are 30-90%.
The tensile strength of the cylinder sleeve that present invention production is obtained is 620~680MPa, and the tensile strength of Cast iron liner is 220
~390MPa.
Conventional cast cylinder sleeve will be by the system cumbersome process of the sizing of mould, form removal etc., and the present invention is using molded
Steel pipe as material, eliminate most of operation, and conventional cast cylinder sleeve production process high energy consumption, it is big for environment pollution.
The present invention cylinder sleeve that obtains of production in the performance of seizure resistance, than the performance of traditional cast iron cylinder sleeve 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 present invention production is obtained.
Cylinder sleeve of the present invention and Cast iron liner mechanical performance comparison sheet：
Can be learnt from upper table：The cylinder sleeve that present invention production is obtained is in tensile strength, hardness, rigidity layer, elastic modelling quantity etc.
Universality can have 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 lines as an example, external diameter：130mm；Internal diameter：126m；Length：240mm)
Can be learnt from upper table：The cost and performance of the cylinder sleeve each side in process of production of present invention production are 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 inequality, environmental pollution, production capacity lowly etc. aspect deficiency, meet the modern times
The requirement of chemical industry.
Above-described embodiment is only used for illustrating specific implementation principle and effect of the invention, rather than for limiting the present invention.Appoint
What is familiar with the personage of industry technology can be changed or be modified on the basis of the method that the present invention is illustrated, therefore all institutes
All that tool usually intellectual is completed under without departing from disclosed spirit and technological thought in category technical field
Equivalent modification or change, should be covered by claim of the invention.
Claims (3)
1. a kind of manufacture method of high intensity super abrasive cylinder sleeve, it is characterised in that：Comprise the following steps：
1) selection processing：According to the thickness and length of cylinder sleeve part, steel pipe is chosen, the steel pipe that will be chosen passes through numerical control strong spinning
Forming technology is processed into semi-finished product cylinder sleeve；
2) Precision Machining：Top gem of a girdle-pendant lathe is slided by numerical control CNC lathes, numerical control semi-finished product cylinder sleeve is machined to the requirement of drawing size, its
In：The id tolerance scope of cylinder sleeve is：± 0.01mm, the outer diameter tolerance scope of cylinder sleeve is：± 0.015mm, the length of cylinder sleeve is public
Differing from scope is：± 0.10mm, the form and position tolerance scope of cylinder sleeve is：Circularity 0.01-0.03mm, cylindricity：0.005-0.015mm；
The inside surface roughness and platform reticulate pattern parameter area of cylinder sleeve be：Rz:6.3-1.0um, Rpk:0.18-0.25um, Rk:0.125-
0.4um, RVK:0.7-2.5um；
3) tufftride treatment：By step 2) processing after cylinder sleeve carry out tufftride treatment；
4) milled processed：Treatment is ground using computer controlled grinding machine to the cylinder sleeve bore after tufftride, 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
Refinement reticulate pattern roughness, obtains optimal oil storage profile when cylinder sleeve works；
5) polish：Cylinder sleeve bore after grinding is processed by shot blasting using digital control polishing machine tool, to remove metal fragment, be mingled with
Thing, roughness is Ra0.4-0.8, and tp values are 30-90%.
2. the manufacture method of a kind of high intensity super abrasive cylinder sleeve according to claim 1, it is characterised in that：The numerical control is strong
Power spinning uses annular spinning roller spinning process, through three road derotation spinning process, wherein：First reduction：40-42%, second
Reduction：28-33%, the 3rd 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 0.05-0.08mm smaller than preset value, the external diameter 0.25- bigger than preset value of semi-finished product cylinder sleeve
0.35mm, the length dimension 4-5mm more long than preset value of semi-finished product cylinder sleeve.
3. the manufacture method of a kind of high intensity super abrasive cylinder sleeve according to claim 1, it is characterised in that：The tufftride
The specific handling process for the treatment of is as follows：A, pretreatment：From RN-60-6K well formula gas nitriding furnaces, temperature is heated to 570 DEG C, puts
Enter cylinder sleeve and seal nitriding furnace, interior waste gas of coming out of the stove side by side, uninterrupted in exhaust process to add alcohol, 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 uniform,
At 570 DEG C, the time is 50-70 minutes to temperature stabilization；B, nitridation：After waste gas is excluded totally, in-furnace temperature is stable at 570 DEG C, together
When add the alcohol of 100 drops and add 750 liters of ammonia per hour toward per minute in nitriding furnace, and adjust furnace pressure and nitrogenized,
The pressure water-column of the U-shaped pressure gauge on furnace wall is maintained at 30-40mm, and nitridation time is 5-6 hours；C, air cooling：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, case 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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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110394607A (en) * | 2019-08-21 | 2019-11-01 | 中原内配集团安徽有限责任公司 | A kind of technique improving cylinder jacket material cutting ability |
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