CN108747798A - A kind of differentiation honing cylinder jacket and preparation method thereof - Google Patents
A kind of differentiation honing cylinder jacket and preparation method thereof Download PDFInfo
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- CN108747798A CN108747798A CN201810528080.6A CN201810528080A CN108747798A CN 108747798 A CN108747798 A CN 108747798A CN 201810528080 A CN201810528080 A CN 201810528080A CN 108747798 A CN108747798 A CN 108747798A
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- texture
- area
- honing
- cylinder jacket
- oil
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B33/00—Honing machines or devices; Accessories therefor
- B24B33/02—Honing machines or devices; Accessories therefor designed for working internal surfaces of revolution, e.g. of cylindrical or conical shapes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B33/00—Honing machines or devices; Accessories therefor
- B24B33/10—Accessories
-
- 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
Abstract
The invention discloses a kind of differentiation honing cylinder jackets and preparation method thereof, cylinder cover inner hole wall is equipped with the reticulate pattern texture of honing, reticulate pattern texture is in that differentiation is distributed from top to bottom, network texture includes oil-storage texture and smooth type texture, the texture depth of oil-storage texture is more than the texture depth of smooth type texture, oil-storage texture position constitutes the functional oil storage region of cylinder jacket, smooth type texture position constitutes the smooth transition region of cylinder jacket, cylinder cover inner hole wall is set as Ith area successively from top to bottom, IIth area and IIIth area, Ith area, the reticulate pattern texture in IIth area and IIIth area uses oil-storage texture or smooth type texture, Ith area is different with the reticulate pattern texture in IIth area；The present invention can improve the sliding capability of cylinder cover inner hole wall, keep cylinder cover inner hole wall oil storage uniform, not only reduce oil consumption, reduces friction coefficient and wear extent, the wear-resisting property between cylinder jacket and piston is effectively improved, and then improves the reliability of the service life and engine work of cylinder jacket.
Description
Technical field
The present invention relates to cylinder liner internal wall reticulate pattern processing technique field more particularly to a kind of differentiation honing cylinder jacket and its
Preparation method.
Background technology
Cylinder jacket is one of vital part of engine, and shape is columnar structured, and when work is placed in engine body
In cylinder body opening, upper end is fixed by cylinder head, and piston is reciprocating in the endoporus of its cylinder jacket, therefore, in cylinder jacket
The structure on surface directly affects consumption of lubricating oil and the service life of engine.Currently, being equipped with reticulate structure, net on cylinder cover inner hole wall
Line structure is made of reticular texture and top chain-wales, and reticular texture is convenient for lubrication oil, improves that cylinder jacket is actual to hold
Section accumulates, and is also beneficial to machine oil and pumps up to the working region on cylinder jacket top, top chain-wales advantageously form high intensity
Oil film, the extra machine oil of cylinder-barrel surface is scraped and is back to crankcase, the sliding capability of cylinder surface is made to be improved, increase cylinder
The air-tightness in hole, while consumption of lubricating oil is also greatly lowered, wherein the performance and used life and interior surface of cylinder liner of cylinder jacket
The parameters such as width, depth and the uniformity of reticulate pattern texture it is closely related.
Currently, the processing of the reticulate pattern texture of interior surface of cylinder liner is mainly based on honing technique, honing technique be machinery plus
Honing manufactures reticulate pattern using the pre- thick top gem of a girdle-pendant, the half smart top gem of a girdle-pendant, the smart top gem of a girdle-pendant.But the reticulate pattern texture at present obtained by honing is mostly to homogenize to divide
Cloth, reticulate pattern texture smoothly can cause oil storage inadequate, and reticulate pattern texture is too deep, and it will cause lubricating oil along groove extrusion, reduction lubrication effect
Fruit can cause the abrasion between cylinder jacket and piston big in above-mentioned two situations, and cylinder jacket wears no resistance, and not only reduces cylinder
Service life is covered, oil consumption increase can be also further resulted in, or even automobile engine scuffing of cylinder bore can be caused and discharge the failures such as exceeded
Occur.
Invention content
The object of the present invention is to provide a kind of differentiation honing cylinder jackets and preparation method thereof, can improve cylinder cover inner hole
The sliding capability of hole wall keeps endoporus hole wall oil storage uniform, not only reduces oil consumption, but also effectively improve between cylinder jacket and piston
Wear-resisting property, and then improve the reliability of the service life and engine work of cylinder jacket.
The technical solution adopted by the present invention is：
A kind of differentiation honing cylinder jacket, including cylinder liner body, cylinder liner body is equipped with endoporus, on the hole wall of the endoporus
Reticulate pattern texture equipped with honing, the angle between reticulate pattern and cylinder jacket cross section are 45 ° ± 10 °, and reticulate pattern texture is in differentiation
Distribution；The parameter of reticulate pattern texture is：1 μm≤Rz≤7 μm, Rpk≤0.3 μm, 0.2 μm≤Rk≤0.8 μm, 0.8 μm≤Rvk≤
2.5 μm, Mr1≤9%, 65%≤Mr2≤90%, Ra≤0.75 μm；Wherein, Rz indicates that average peak valley is high, and Rpk indicates the drop of summit
Low, Rk indicates that core roughness, Rvk indicate that the reduction of the lowest point, Mr1 indicate the minimum metal materials rate of roughness center profile,
Mr2 indicates that the maximum metal materials rate of roughness center profile, Ra indicate surface roughness；
The reticulate pattern texture includes oil-storage texture and smooth type texture two types, and the surface roughness of oil-storage texture is more than
The surface roughness of smooth type texture, oil-storage texture position constitute the functional oil storage region of cylinder jacket, smooth type line
Manage the smooth transition region that position constitutes cylinder jacket；The endoporus hole wall is set as Ith area, IIth area and III successively from top to bottom
Area, Ith area are cylinder jacket top dead centre region, and IIIth area is cylinder jacket lower dead center region, piston motion to oil piston ring when top dead centre
Lower ring bank area above is Ith area, and the upper ring bank following region of piston motion to piston top ring when lower dead center is IIIth area, and IIth area is I
The reticulate pattern texture type in the region between area and IIIth area, Ith area and IIth area is different.
The parametric texture of the oil-storage texture is：2 μm≤Rz≤7 μm, Rpk≤0.3 μm, 0.2 μm≤Rk≤0.8 μm,
1.0 μm≤Rvk≤2.5 μm, Mr1≤9%, 65%≤Mr2≤90%, Ra≤0.75 μm, the parametric texture of the smooth type texture
For：1 μm≤Rz≤6.5 μm, Rpk≤0.25 μm, 0.2 μm≤Rk≤0.5 μm, 0.8 μm≤Rvk≤1.5 μm, Mr1≤9%, 65%
≤ Mr2≤90%, Ra≤0.63 μm, wherein Rz indicates that average peak valley is high, and Rpk indicates that the reduction of summit, Rk indicate that core is coarse
Degree, Rvk indicate that the reduction of the lowest point, Mr1 indicate that the minimum metal materials rate of roughness center profile, Mr2 indicate roughness center
The maximum metal materials rate of profile, Ra indicate surface roughness.
The basic roughness degree value range of cylinder liner body endoporus hole wall before differentiation honing is 8 μm~12 μ
m。
The material of the cylinder liner body uses Lanzcast iron, bainite ductile iron, carbon steel 45# or carbon steel 20#.
The length in Ith area is 15mm~50mm, and the length in IIth area is 30mm~250mm, and the length in IIIth area is 20mm
~80mm.
A kind of preparation method of above-mentioned differentiation honing cylinder jacket, it is characterised in that：Include the following steps：
A, cylinder liner blank is cast：Cylinder sleeve cast part or shaping steel tube are prepared using wet coating material centrifugal casting technique；
B, it machines：Machining is carried out to cylinder liner blank and preliminary Honing process, concrete technology flow process are：
- heavy boring endoporus-is slightly cut to repair-thick top gem of a girdle-pendant endoporus-fine turning outer circle of-half fine turning outer circle of right boring endoporus-；
C, honing：Honing parameters are inputted in numerical control honing device, are used in combination numerical control honing device in cylinder jacket obtained by step B
Hole wall carries out microhoning processing, and honing parameters include the parametric texture of oil-storage texture and smooth type texture；It specifically includes following
Step：
C1, selection honing abrasive belt corresponding with Ith area, IIth area and IIIth area, and honing abrasive belt is adhered on emery stick plate, it is assembled into the top gem of a girdle-pendant
Bistrique, installation to numerical control honing device；
C2, the machined parameters that Ith area, IIth area and IIIth area are set in numerical control honing device；
C3, numerical control honing device carry out microhoning processing according to set parametric texture to the endoporus hole wall of cylinder jacket, make endoporus hole
Wall has the reticulate pattern texture of differentiation honing.
The invention has the advantages that：
（1）By by the reticulate pattern texture that setting is distributed in differentiation on cylinder cover inner hole hole wall, endoporus hole wall being made to form difference
The functional oil storage regional peace for changing distribution slides transitional region, rationally distributed, keeps cylinder jacket oil storage appropriate and whole oil storage is uniform,
And then make lubricating oil be not easy to be extruded, ensure that the surface lubrication performance of cylinder cover inner hole hole wall, reduce reduce piston ring with
Friction and wear in cylinder jacket improves the service life of cylinder jacket, ensures the safe and stable and reliably working of engine indirectly；
（2）By the parameter setting to oil-storage texture and smooth type texture, keep the friction coefficient of the present invention and wear extent apparent
Less than common cylinder jacket, so that friction coefficient is less than 0.1, greatly reduce the friction coefficient between cylinder jacket and piston ring and abrasion
Amount, extends the service life of cylinder jacket, effectively avoids the generation of the safety accidents such as engine scuffing；
（3）By using the preparation method of differentiation honing cylinder jacket in the present invention, the top gem of a girdle-pendant being distributed with differentiation can be prepared
Cylinder jacket is ground, and the cylinder jacket oil storage function manufactured is good, friction coefficient is low, and wear extent is low, effectively increases the use of cylinder jacket
Performance and used life.
Description of the drawings
Fig. 1 is the cross section structure schematic diagram of cylinder jacket in the present invention；
Fig. 2 is the flow chart of preparation method in the present invention；
Fig. 3 is the friction coefficient comparison diagram of embodiment one and common cylinder jacket；
Fig. 4 is the wear extent comparison diagram of embodiment one and common cylinder jacket；
Fig. 5 is the friction coefficient comparison diagram of embodiment two and common cylinder jacket；
Fig. 6 is the wear extent comparison diagram of embodiment two and common cylinder jacket；
Fig. 7 is the coefficient of friction data figure of embodiment three；
Fig. 8 is the wear extent comparison diagram of embodiment three and common cylinder jacket；
Fig. 9 is the coefficient of friction data figure of example IV；
Figure 10 is the wear extent comparison diagram of example IV and common cylinder jacket.
Specific implementation mode
As shown in Figure 1, the present invention includes cylinder liner body, the material of cylinder liner body is cast iron or carbon steel material, preferably
Using Lanzcast iron, bainite ductile iron, carbon steel 45# or carbon steel 20#, cylinder liner body is equipped with endoporus, on the hole wall of endoporus
Reticulate pattern texture equipped with honing, the angle between reticulate pattern and cylinder jacket cross section are 45 ° ± 10 °, and reticulate pattern texture is in differentiation
Distribution, the parameter of reticulate pattern texture are：1 μm≤Rz≤7 μm, Rpk≤0.3 μm, 0.2 μm≤Rk≤0.8 μm, 0.8 μm≤Rvk≤
2.5 μm, Mr1≤9%, 65%≤Mr2≤90%, Ra≤0.75 μm；Wherein, Rz indicates that average peak valley is high, and Rpk indicates the drop of summit
Low, Rk indicates that core roughness, Rvk indicate that the reduction of the lowest point, Mr1 indicate the minimum metal materials rate of roughness center profile,
Mr2 indicates that the maximum metal materials rate of roughness center profile, Ra indicate surface roughness；
Reticulate pattern texture in above-mentioned reticulate pattern texture parameter range includes oil-storage texture and smooth type texture two types, oil storage
The surface roughness of type texture is more than the surface roughness of smooth type texture, and oil-storage texture position constitutes the work(of cylinder jacket
Energy property oil storage region, smooth type texture position constitute the smooth transition region of cylinder jacket；The hole wall of endoporus from top to bottom according to
Secondary to be set as Ith area, IIth area and three, IIIth area region, Ith area is cylinder jacket top dead centre region, and IIIth area is cylinder jacket lower dead center region, living
The lower ring bank area above of plug oil piston ring when moving to top dead centre is Ith area, piston motion to when lower dead center piston top ring it is upper
Ring bank following region is IIIth area, region of IIth area between Ith area and IIIth area；The length in Ith area is 15mm~50mm, the length in IIth area
Length for 30mm~250mm, IIIth area is 20mm~80mm.Ith area, the trizonal reticulate pattern texture in IIth area and IIIth area for honing and
At ultra micro reticulate pattern, the ultra micro reticulate pattern in these three regions uses differentiation area distribution, i.e. the reticulate pattern line in Ith area, IIth area and IIIth area
Reason is all made of oil-storage texture or smooth type texture, and Ith area is different with the reticulate pattern texture in IIth area.
There are following four kinds combinations for the grain distribution in Ith area, IIth area and IIIth area：
（1）The hole wall in Ith area and IIIth area uses smooth type texture, II area's hole wall to use oil-storage texture；
（2）The hole wall in Ith area and IIIth area uses oil-storage texture, II area's hole wall to use smooth type texture；
（3）I area's hole wall uses oil-storage texture, the hole wall in IIth area and IIIth area to use smooth type texture；
（4）I area's hole wall uses smooth type texture, the hole wall in IIth area and IIIth area to use oil-storage texture.
The parametric texture of oil-storage texture is set as：2 μm≤Rz≤7 μm, Rpk≤0.3 μm, 0.2 μm≤Rk≤0.8 μm,
1.0 μm≤Rvk≤2.5 μm, Mr1≤9%, 65%≤Mr2≤90%, Ra≤0.75 μm, the parametric texture setting of smooth type texture
For：1 μm≤Rz≤6.5 μm, Rpk≤0.25 μm, 0.2 μm≤Rk≤0.5 μm, 0.8 μm≤Rvk≤1.5 μm, Mr1≤9%, 65%
≤ Mr2≤90%, Ra≤0.63 μm, wherein Rz indicates that average peak valley is high, and Rpk indicates that the reduction of summit, Rk indicate that core is coarse
Degree, Rvk indicate that the reduction of the lowest point, Mr1 indicate that the minimum metal materials rate of roughness center profile, Mr2 indicate roughness center
The maximum metal materials rate of profile, Ra indicate surface roughness；Basic roughness degree of the endoporus hole wall before differentiation honing takes
Value ranges preferably from 8 μm~12 μm；Inner hole wall has the reticulate pattern texture of differentiation honing after microhoning endoporus.
For a better understanding of the present invention, technical scheme of the present invention is described further below in conjunction with the accompanying drawings.
Embodiment one：
In the present embodiment, the value range of basic roughness degree of the hole wall of endoporus before honing is preferably 10 μm~12 μm, and I
Area is cylinder jacket top dead centre region, and the overall dimensions length in Ith area is 40mm；IIth area region between Ith area and IIIth area, IIth area it is whole
Body dimensions length is 140mm, and IIIth area is cylinder jacket lower dead center region, and III area's overall dimensions length is 50mm；
The reticulate pattern texture honing of the hole wall in Ith area and IIIth area is the deeper oil-storage texture of depth, the reticulate pattern texture top gem of a girdle-pendant of II area's hole wall
Mill is the shallower smooth type texture of depth；
The reticulate pattern parametric texture of Ith area honing is：2 μm≤Rz≤7 μm, Rpk≤0.3 μm, 0.2 μm≤Rk≤0.8 μm, 1.0 μm≤
Rvk≤2.5 μm, Mr1≤9%, 65%≤Mr2≤90%, Ra≤0.75 μm；
The reticulate pattern parametric texture of IIth area honing is：1 μm≤Rz≤6.5 μm, Rpk≤0.25 μm, 0.2 μm≤Rk≤0.5 μm, 0.8 μ
M≤Rvk≤1.5 μm, Mr1≤9%, 65%≤Mr2≤90%, Ra≤0.63 μm；
The reticulate pattern parametric texture of IIIth area honing is：2 μm≤Rz≤7 μm, Rpk≤0.3 μm, 0.2 μm≤Rk≤0.8 μm, 1.0 μm≤
Rvk≤2.5 μm, Mr1≤9%, 65%≤Mr2≤90%, Ra≤0.75 μm；
Wherein, Rz indicates that average peak valley is high, and Rpk indicates that the reduction of summit, Rk indicate that core roughness, Rvk indicate the drop of the lowest point
Low, Mr1 indicates that the minimum metal materials rate of roughness center profile, Mr2 indicate the maximum metal material of roughness center profile
Rate, Ra indicate surface roughness.
As shown in Fig. 2, the preparation method of the cylinder jacket in the present embodiment includes the following steps：
A, cylinder liner blank is cast：Lanzcast iron casting is prepared using wet coating material centrifugal casting technique；
B, it machines：Machining is carried out to cylinder liner blank and preliminary Honing process, concrete technology flow process are：
- heavy boring endoporus-is slightly cut to repair-thick top gem of a girdle-pendant endoporus-fine turning outer circle of-half fine turning outer circle of right boring endoporus-；
C, honing：Honing parameters are inputted in the numerical control honing device of Z800-0180 models, are used in combination numerical control honing device to step
The inner hole wall of cylinder jacket obtained by B carries out microhoning processing；Specifically include following steps：
C1, selection honing abrasive belt corresponding with Ith area, IIth area and IIIth area, and honing abrasive belt is adhered on emery stick plate, it is assembled into the top gem of a girdle-pendant
Bistrique, installation to numerical control honing device；
C2, the machined parameters that Ith area, IIth area and IIIth area are set in numerical control honing device；
C3, numerical control honing device carry out microhoning processing according to set parametric texture to the endoporus hole wall of cylinder jacket, make cylinder jacket
Endoporus hole wall has the reticulate pattern texture of differentiation honing, improves the wearability of cylinder jacket and piston ring.
In the present embodiment, reticulate pattern uses differentiation area distribution, keeps upper and lower part region ultra micro reticulate pattern texture deep, oil storage
Fully, central region ultra micro reticulate pattern texture is smooth, and oil storage is appropriate, and whole oil storage is uniform, and lubricating oil is not easy to be extruded, and makes cylinder sleeve
Inner surface is smooth, as shown in Fig. 3 and Fig. 4 experimental datas, 50N and 100N load effect under, friction coefficient of the invention and
Wear extent is significantly lower than common cylinder jacket, reduces the frictional wear amount between piston ring and endoporus, friction coefficient is made to be less than
0.1, the friction coefficient and wear extent between cylinder jacket and piston ring are greatly reduced, the service life of cylinder jacket is extended, has
Effect avoids the generation of the safety accidents such as engine scuffing.
Embodiment two：
In the present embodiment, liner body is by the cylinder sleeve hair of the bainite ductile iron casting prepared using wet coating material centrifugal casting technique
Base is process, and the value range of basic roughness degree of the endoporus hole wall before honing is preferably 10 μm~12 μm, and Ith area is cylinder
Top dead centre region is covered, the overall dimensions length in Ith area is 40mm；IIth area region between Ith area and IIIth area, the overall dimensions in IIth area are long
Degree is 140mm, and IIIth area is cylinder jacket lower dead center region, and III area's overall dimensions length is 50mm；
The reticulate pattern texture honing of the hole wall in Ith area is the deeper oil-storage texture of depth, the reticulate pattern texture of the hole wall in IIth area and IIIth area
Honing is the shallower smooth type texture of depth；
The reticulate pattern parametric texture of Ith area honing is：2 μm≤Rz≤7 μm, Rpk≤0.3 μm, 0.2 μm≤Rk≤0.8 μm, 1.0 μm≤
Rvk≤2.5 μm, Mr1≤9%, 65%≤Mr2≤90%, Ra≤0.75 μm；
The reticulate pattern parametric texture of IIth area honing is：1 μm≤Rz≤6.5 μm, Rpk≤0.25 μm, 0.2 μm≤Rk≤0.5 μm, 0.8 μ
M≤Rvk≤1.5 μm, Mr1≤9%, 65%≤Mr2≤90%, Ra≤0.63 μm；
The reticulate pattern parametric texture of IIIth area honing is：1 μm≤Rz≤6.5 μm, Rpk≤0.25 μm, 0.2 μm≤Rk≤0.5 μm, 0.8 μ
M≤Rvk≤1.5 μm, Mr1≤9%, 65%≤Mr2≤90%, Ra≤0.63 μm；
Wherein, Rz indicates that average peak valley is high, and Rpk indicates that the reduction of summit, Rk indicate that core roughness, Rvk indicate the drop of the lowest point
Low, Mr1 indicates that the minimum metal materials rate of roughness center profile, Mr2 indicate the maximum metal material of roughness center profile
Rate, Ra indicate surface roughness.
In the present embodiment, reticulate pattern uses differentiation area distribution, keeps upper and lower part region ultra micro reticulate pattern texture deep, oil storage
Fully, central region ultra micro reticulate pattern texture is smooth, and oil storage is appropriate, and whole oil storage is uniform, and lubricating oil is not easy to be extruded, and makes cylinder sleeve
Inner surface is smooth, as shown in Fig. 5 and Fig. 6 experimental datas, 50N and 100N load effect under, friction coefficient of the invention and
Wear extent is significantly lower than common cylinder jacket, reduces the frictional wear amount between piston ring and endoporus, friction coefficient is made to be less than
0.1, extend the service life of cylinder jacket, effectively avoids the generation of the safety accidents such as engine scuffing.
Embodiment three：
In the present embodiment, liner body is using the cylinder liner blanks of carbon steel 45# materials by being process, endoporus hole wall honing it
Preceding basic roughness degree value range is preferably 10 μm~12 μm, and Ith area is cylinder jacket top dead centre region, and the overall dimensions in Ith area are long
Degree is 25mm；The overall dimensions length in IIth area region between Ith area and IIIth area, IIth area is 100mm, and IIIth area is cylinder jacket lower dead center
Region, III area's overall dimensions length are 40mm；
The reticulate pattern texture honing of the hole wall in Ith area and IIIth area is the deeper oil-storage texture of depth, the reticulate pattern texture top gem of a girdle-pendant of II area's hole wall
Mill is the shallower smooth type texture of depth；
The reticulate pattern parametric texture of Ith area honing is：2 μm≤Rz≤7 μm, Rpk≤0.3 μm, 0.2 μm≤Rk≤0.8 μm, 1.0 μm≤
Rvk≤2.5 μm, Mr1≤9%, 65%≤Mr2≤90%, Ra≤0.75 μm；
The reticulate pattern parametric texture of IIth area honing is：1 μm≤Rz≤6.5 μm, Rpk≤0.25 μm, 0.2 μm≤Rk≤0.5 μm, 0.8 μ
M≤Rvk≤1.5 μm, Mr1≤9%, 65%≤Mr2≤90%, Ra≤0.63 μm；
The reticulate pattern parametric texture of IIIth area honing is：2 μm≤Rz≤7 μm, Rpk≤0.3 μm, 0.2 μm≤Rk≤0.8 μm, 1.0 μm≤
Rvk≤2.5 μm, Mr1≤9%, 65%≤Mr2≤90%, Ra≤0.75 μm；
Wherein, Rz indicates that average peak valley is high, and Rpk indicates that the reduction of summit, Rk indicate that core roughness, Rvk indicate the drop of the lowest point
Low, Mr1 indicates that the minimum metal materials rate of roughness center profile, Mr2 indicate the maximum metal material of roughness center profile
Rate, Ra indicate surface roughness.
In the present embodiment, reticulate pattern uses differentiation area distribution, keeps upper and lower part region ultra micro reticulate pattern texture deep, oil storage
Fully, central region ultra micro reticulate pattern texture is smooth, and oil storage is appropriate, and whole oil storage is uniform, and lubricating oil is not easy to be extruded, and makes cylinder sleeve
Inner surface is smooth, as shown in Fig. 7 and Fig. 8 experimental datas, 50N and 100N load effect under, friction coefficient of the invention and
Wear extent is significantly lower than common cylinder jacket, reduces the frictional wear amount between piston ring and endoporus, friction coefficient is made to be less than
0.1, extend the service life of cylinder jacket, effectively avoids the generation of the safety accidents such as engine scuffing.
Example IV：
In the present embodiment, liner body is using the cylinder liner blanks of carbon steel 20# materials by being process, endoporus hole wall honing it
The value range of preceding basic roughness degree is preferably 10 μm~12 μm, and Ith area is cylinder jacket top dead centre region, the overall dimensions in Ith area
Length is 25mm；The overall dimensions length in IIth area region between Ith area and IIIth area, IIth area is 100mm, and IIIth area is to stop under cylinder jacket
Point region, III area's overall dimensions length are 40mm；
The reticulate pattern texture honing of the hole wall in Ith area and IIIth area is the shallower smooth type texture of depth, the reticulate pattern texture top gem of a girdle-pendant of II area's hole wall
Grind the deeper oil-storage texture of depth；
The reticulate pattern parametric texture of Ith area honing is：1 μm≤Rz≤6.5 μm, Rpk≤0.25 μm, 0.2 μm≤Rk≤0.5 μm, 0.8 μm
≤ Rvk≤1.5 μm, Mr1≤9%, 65%≤Mr2≤90%, Ra≤0.63 μm；
The reticulate pattern parametric texture of IIth area honing is：2 μm≤Rz≤7 μm, Rpk≤0.3 μm, 0.2 μm≤Rk≤0.8 μm, 1.0 μm≤
Rvk≤2.5 μm, Mr1≤9%, 65%≤Mr2≤90%, Ra≤0.75 μm；
The reticulate pattern parametric texture of IIIth area honing is：1 μm≤Rz≤6.5 μm, Rpk≤0.25 μm, 0.2 μm≤Rk≤0.5 μm, 0.8 μ
M≤Rvk≤1.5 μm, Mr1≤9%, 65%≤Mr2≤90%, Ra≤0.63 μm；
Wherein, Rz indicates that average peak valley is high, and Rpk indicates that the reduction of summit, Rk indicate that core roughness, Rvk indicate the drop of the lowest point
Low, Mr1 indicates that the minimum metal materials rate of roughness center profile, Mr2 indicate the maximum metal material of roughness center profile
Rate, Ra indicate surface roughness.
In the present embodiment, reticulate pattern uses differentiation area distribution, keeps upper and lower part region ultra micro reticulate pattern texture deep, oil storage
Fully, central region ultra micro reticulate pattern texture is smooth, and oil storage is appropriate, and whole oil storage is uniform, and lubricating oil is not easy to be extruded, and makes cylinder sleeve
Inner surface is smooth, as shown in Fig. 9 and Figure 10 experimental datas, 50N and 100N load effect under, friction coefficient of the invention and
Wear extent is significantly lower than common cylinder jacket, reduces the frictional wear amount between piston ring and endoporus, friction coefficient is made to be less than
0.1, extend the service life of cylinder jacket, effectively avoids the generation of the safety accidents such as engine scuffing.
Finally it should be noted that：The above embodiments are merely illustrative of the technical solutions of the present invention, rather than its limitations；Although
Present invention has been described in detail with reference to the aforementioned embodiments, it will be understood by those of ordinary skill in the art that, still may be used
To modify to the technical solution recorded in previous embodiment, either which part or all technical features are equal
It replaces, and these modifications or replacements, the model for technical solution of the embodiment of the present invention that it does not separate the essence of the corresponding technical solution
It encloses.
Claims (6)
1. a kind of differentiation honing cylinder jacket, including cylinder liner body, cylinder liner body is equipped with endoporus, it is characterised in that：Institute
The hole wall for stating endoporus is equipped with the reticulate pattern texture of honing, and the angle between reticulate pattern and cylinder jacket cross section is 45 ° ± 10 °, and net
Line texture is distributed in differentiation；The parameter of reticulate pattern texture is：1 μm≤Rz≤7 μm, Rpk≤0.3 μm, 0.2 μm≤Rk≤0.8 μm,
0.8 μm≤Rvk≤2.5 μm, Mr1≤9%, 65%≤Mr2≤90%, Ra≤0.75 μm；Wherein, Rz indicates that average peak valley is high, Rpk
Indicate that the reduction of summit, Rk indicate that core roughness, Rvk indicate that the reduction of the lowest point, Mr1 indicate the minimum of roughness center profile
Metal material rate, Mr2 indicate that the maximum metal materials rate of roughness center profile, Ra indicate surface roughness；
The reticulate pattern texture includes oil-storage texture and smooth type texture two types, and the surface roughness of oil-storage texture is more than
The surface roughness of smooth type texture, oil-storage texture position constitute the functional oil storage region of cylinder jacket, smooth type line
Manage the smooth transition region that position constitutes cylinder jacket；The endoporus hole wall is set as Ith area, IIth area and III successively from top to bottom
Area, Ith area are cylinder jacket top dead centre region, and IIIth area is cylinder jacket lower dead center region, piston motion to oil piston ring when top dead centre
Lower ring bank area above is Ith area, and the upper ring bank following region of piston motion to piston top ring when lower dead center is IIIth area, and IIth area is I
The reticulate pattern texture type in the region between area and IIIth area, Ith area and IIth area is different.
2. differentiation honing cylinder jacket according to claim 1, it is characterised in that：The parametric texture of the oil-storage texture
For：2 μm≤Rz≤7 μm, Rpk≤0.3 μm, 0.2 μm≤Rk≤0.8 μm, 1.0 μm≤Rvk≤2.5 μm, Mr1≤9%, 65%≤
The parametric texture of Mr2≤90%, Ra≤0.75 μm, the smooth type texture is：1 μm≤Rz≤6.5 μm, Rpk≤0.25 μm, 0.2
μm≤Rk≤0.5 μm, and 0.8 μm≤Rvk≤1.5 μm, Mr1≤9%, 65%≤Mr2≤90%, Ra≤0.63 μm, wherein Rz is indicated
Average peak valley is high, and Rpk indicates that the reduction of summit, Rk indicate that core roughness, Rvk indicate that the reduction of the lowest point, Mr1 indicate roughness
The minimum metal materials rate of center profile, Mr2 indicate that the maximum metal materials rate of roughness center profile, Ra indicate rough surface
Degree.
3. differentiation honing cylinder jacket according to claim 2, it is characterised in that：The cylinder liner body is in the differentiation top gem of a girdle-pendant
The basic roughness degree value range of endoporus hole wall is 8 μm~12 μm before mill.
4. differentiation honing cylinder jacket according to claim 2, it is characterised in that：The material of the cylinder liner body uses
Lanzcast iron, bainite ductile iron, carbon steel 45# or carbon steel 20#.
5. differentiation honing cylinder jacket according to claim 2, it is characterised in that：The length in Ith area be 15mm~
The length of 50mm, IIth area are 30mm~250mm, and the length in IIIth area is 20mm~80mm.
6. the preparation method of differentiation honing cylinder jacket according to claim 2, it is characterised in that：Include the following steps：
A, cylinder liner blank is cast：Cylinder sleeve cast part or shaping steel tube are prepared using wet coating material centrifugal casting technique；
B, it machines：Machining is carried out to cylinder liner blank and preliminary Honing process, concrete technology flow process are：
- heavy boring endoporus-is slightly cut to repair-thick top gem of a girdle-pendant endoporus-fine turning outer circle of-half fine turning outer circle of right boring endoporus-；
C, honing：Honing parameters are inputted in numerical control honing device, are used in combination numerical control honing device in cylinder jacket obtained by step B
Hole wall carries out microhoning processing, and honing parameters include the parametric texture of oil-storage texture and smooth type texture；It specifically includes following
Step：
C1, selection honing abrasive belt corresponding with Ith area, IIth area and IIIth area, and honing abrasive belt is adhered on emery stick plate, it is assembled into the top gem of a girdle-pendant
Bistrique, installation to numerical control honing device；
C2, the machined parameters that Ith area, IIth area and IIIth area are set in numerical control honing device；
C3, numerical control honing device carry out microhoning processing according to set parametric texture to the endoporus hole wall of cylinder jacket, make endoporus hole
Wall has the reticulate pattern texture of differentiation honing.
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