CN104455168A - Low friction cylinder of shock absorber and manufacturing method thereof - Google Patents
Low friction cylinder of shock absorber and manufacturing method thereof Download PDFInfo
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- CN104455168A CN104455168A CN201410681356.6A CN201410681356A CN104455168A CN 104455168 A CN104455168 A CN 104455168A CN 201410681356 A CN201410681356 A CN 201410681356A CN 104455168 A CN104455168 A CN 104455168A
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- cylinder barrel
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- steel pipe
- pipe
- water
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- 238000004519 manufacturing process Methods 0.000 title abstract description 7
- 239000006096 absorbing agent Substances 0.000 title abstract 6
- 230000035939 shock Effects 0.000 title abstract 6
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 73
- 239000010959 steel Substances 0.000 claims abstract description 73
- 238000001816 cooling Methods 0.000 claims abstract description 42
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 40
- 238000003466 welding Methods 0.000 claims abstract description 22
- 238000000137 annealing Methods 0.000 claims abstract description 21
- 238000005520 cutting process Methods 0.000 claims abstract description 9
- 239000000203 mixture Substances 0.000 claims abstract description 8
- 239000002994 raw material Substances 0.000 claims abstract description 7
- 238000004140 cleaning Methods 0.000 claims abstract description 6
- 239000000463 material Substances 0.000 claims abstract description 6
- 238000001514 detection method Methods 0.000 claims abstract description 5
- 238000001035 drying Methods 0.000 claims abstract description 5
- 238000000034 method Methods 0.000 claims description 16
- 239000007789 gas Substances 0.000 claims description 15
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 claims description 13
- 238000005097 cold rolling Methods 0.000 claims description 10
- 238000006073 displacement reaction Methods 0.000 claims description 10
- 238000010079 rubber tapping Methods 0.000 claims description 10
- 238000007493 shaping process Methods 0.000 claims description 8
- 239000002253 acid Substances 0.000 claims description 6
- 238000002203 pretreatment Methods 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 210000003371 toe Anatomy 0.000 claims description 5
- 239000000470 constituent Substances 0.000 claims description 4
- 238000012360 testing method Methods 0.000 claims description 4
- 238000002485 combustion reaction Methods 0.000 claims description 3
- 238000007689 inspection Methods 0.000 claims description 3
- 230000003449 preventive effect Effects 0.000 claims description 3
- 239000011435 rock Substances 0.000 claims description 3
- 238000002791 soaking Methods 0.000 claims description 3
- 238000007598 dipping method Methods 0.000 abstract description 3
- 238000010622 cold drawing Methods 0.000 abstract 2
- 238000000465 moulding Methods 0.000 abstract 2
- 238000010008 shearing Methods 0.000 abstract 2
- 238000005553 drilling Methods 0.000 abstract 1
- 238000007654 immersion Methods 0.000 abstract 1
- 238000012856 packing Methods 0.000 abstract 1
- 238000004513 sizing Methods 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 238000001179 sorption measurement Methods 0.000 description 2
- 238000007605 air drying Methods 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000003032 molecular docking Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000003079 width control Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3271—Assembly or repair
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/3207—Constructional features
- F16F9/3235—Constructional features of cylinders
Abstract
The invention discloses a low friction cylinder of a shock absorber and a manufacturing method of the low friction cylinder of the shock absorber. The manufacturing method of the low friction cylinder of the shock absorber comprises the following steps: A. raw material pretreatment; B. longitudinal shearing; C. pipe welding. Pipe welding comprises the following steps: uncoiling, shearing and butt welding of the end of the pipe, material storing, rough molding of the welded pipe, welded seam extruding, welding, deburring inside and outside of the welded seam, cooling, refined molding of the welded pipe, eddy current detection, straightening, sizing and cutting off, and finished welded pipe inspecting, wherein the mixture of rust-preventative oil and water is adopted to cool when welding, and an inside and outside arc cutting tool is adopted to deburr, the width of the welded seam is 2 times the wall thickness of the steel pipe; D. cleaning and drying; E. bright annealing; F. dipping in reactive drawing oil; G. the first cold-drawing; H. dipping in reactive drawing oil again; I. the second cold-drawing; J. straightening; K. cutting off; L. chamfering; M. cleaning, welding an upper end-plate, drilling a hole at the lower portion of the steel pipe, immersion in rust-preventative oil, and packing. With the manufacturing method of the low friction cylinder of the shock absorber, the welded seam pipe used for the cylinder can be manufactured, and the friction of the welded seam pipe can meet requirements of the shock absorber for friction.
Description
Technical field
The present invention relates to a kind of low-frictional force cylinder barrel and manufacture method thereof of vibration damper, the cylinder barrel of this vibration damper is the cylinder barrel contacted with vibration damper working piston.
Background technique
This vibration damper is widely used among automobile suspension system, and can cushioning effect be played in compression and extension stroke, the working piston of vibration damper does in cylinder barrel inside and repeatedly moves, and the frictional force size of inner wall of cylinder has had a strong impact on vibration damper working life and using effect, frictional force is excessive, the wearing and tearing of working piston increase, the resistance of vibration damper increases, affect damping effect, therefore, require below the frictional force demand fulfillment of generally speaking inner wall of cylinder: under the pressure test of 230N, frictional force is less than or equals 19.5N.Current cylinder barrel has employing seamless steel pipe to make, and also have and adopt welded tube to make, seamless steel pipe cost is too high, be generally only used on high-end car, and welded tube cost is low, but frictional force cannot get to vibration damper requirement.
Summary of the invention
Technical problem to be solved by this invention is: for a kind of making method of low-frictional force cylinder barrel of vibration damper, this making method can produce welded tube for cylinder barrel, and the frictional force of welded tube can meet frictional force of damper requirement.
Another technical problem to be solved by this invention is in addition: the low-frictional force cylinder barrel providing a kind of vibration damper, and the frictional force of this cylinder barrel can meet frictional force of damper requirement.
For solving the problems of the technologies described above, technological scheme of the present invention is: a kind of making method of low-frictional force cylinder barrel of vibration damper, comprises the following steps:
A, pre-treatment of raw material: the steel plate after shaping is carried out cold rolling, make cold rolling after steel plate thickness be cold rolling before steel plate thickness 1/3rd;
B, slitting: the steel plate slitting after pre-treatment of raw material is become the rear rolling of band;
C, the steel plate after rolling is processed into welded tube, it comprises the following steps: butt welding → material stock → welded tube slightly deburring → cooling → welded tube precisive shaped → eddy current testing detection → aligning → fixed ruler cutting → inspection finished product welded tube inside and outside shaping → weld seam extruding → welding → weld seam is sheared in uncoiling → end, welding wherein in this step adopts water-soluble anti-rust oil to cool with the mixture of water, inside and outside weld seam, deburring then adopts inside and outside arc cutter to remove burr, and distance between the toes of a weld is 1.4-2 times of thickness of steel pipe;
D, welded tube is put into temperature is dry after soaking 3-5 minute in the clear water of 60 DEG C-100 DEG C;
E, welded tube after drying carry out bright annealing, and annealing temperature is 755 DEG C-770 DEG C; The DX gas cooling that rock gas and air partial combustion produce is to the water constituents in removal DX gases after subzero 40 degree to subzero 30 degree, and then intensification passes into bright annealing furnace and carries out protecting and reducing; Tapping temperature 60-100 DEG C after the cooling of the rear steel pipe of annealing;
F, the steel pipe head draw after annealing is then wholely immersed in 5-7min in response type drawing oil, the oil temperature of this drawing oil is 50 DEG C-65 DEG C, and acid number is 87-93, the water yield 1.2%;
G, the steel pipe after step F is drained after first time cold-drawn;
Steel after H, first time cold-drawn is whole is immersed in 3-5min in response type drawing oil, and the oil temperature of this drawing oil is 55 DEG C-60 DEG C, and acid number is 85-95, the water yield 1.3%;
Second time cold-drawn after steel pipe after step H drains by I;
J, the steel pipe after second time cold-drawn to be aligned on straightening machine, ensure that straightness accuracy deviation is less than a thousandth;
K, tentatively cut off by steel pipe, the length of the tubing after cut-out is greater than the 3-5mm of drawing given size;
L, the requirement that length meets product is controlled to tubing two chamfer after cutting off;
M, cleaning → welding upper head plate → steel pipe lower boreholes → bubble rust preventive oil → vanning.
As the preferred scheme of one, in step e, after steel tube anneal, cooling adopts sub-sectional cooling, and first paragraph cooling adopts water pipe displacement cooling, and second segment cooling adopts water pipe displacement to add air cooling.
As the preferred scheme of one, tapping temperature when thickness of steel pipe is 1.5-1.8mm is 55 DEG C, and tapping temperature when thickness of steel pipe is 1.8-2.2mm is 60 DEG C.
As the preferred scheme of one, inside and outside weld seam, during deburring, adopt inside and outside arc cutter to remove burr, to remove after burr inside and outside weld seam highly not higher than 2/10 to ten/10ths of steel pipe thickness.
As the preferred scheme of one, described water-soluble anti-rust oil is with the mixture of water, and water-soluble anti-rust oil is 1:10-1:5 with the volume ratio of water.
In addition for solving another technical problem, the technical solution used in the present invention is: a kind of low-frictional force cylinder barrel of vibration damper, comprise the cylinder barrel body and upper end cap be made up of welded tube, upper end and the described upper end cap of described cylinder barrel body are welded and fixed, the lower end of described cylinder barrel body is for installing bottom valve, the bottom of described cylinder barrel body is provided with oil through, the outer diameter of described welded tube is D, inner diameter is d, distance between the toes of a weld H=(the D-d) × I of this welded tube, I is penalty coefficient, and the scope of I is between 0.7-1.
As the preferred scheme of one, the top and bottom of described cylinder barrel body are provided with the inside and outside chamfering of r=0.2.
As the preferred scheme of one, the upper end of described cylinder barrel body is fixedly installed gasket ring, and described upper end cap is welded on gasket ring.
As the preferred scheme of one, the number of described oil through is two and is radial oil through, and two oil throughs are oppositely arranged.
After have employed technique scheme, effect of the present invention is: this making method can produce the welded tube of low-frictional force, and utilize this welded tube to be made into inner cylinder tube can to meet usage requirement on vibration damper in low friction, so namely, reduce cost, vibration damper damping effect can be ensured again, extend working piston working life.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the structure sectional view of the cylinder barrel of the embodiment of the present invention;
In accompanying drawing: 1. cylinder barrel body; 2. upper head plate; 3. oil through; 4. gasket ring.
Embodiment
Below by specific embodiment, the present invention is described in further detail.
As shown in Figure 1, a kind of making method of low-frictional force cylinder barrel of vibration damper, comprises the following steps:
A, pre-treatment of raw material: the steel plate after shaping is carried out cold rolling, make cold rolling after steel plate thickness be cold rolling before steel plate thickness 1/3rd; This goes out steel plate after cold rolling, and after thickness reduces 2/3rds, metallographic structure is more tight, and surface imperfection can be less, and the frictional force of the inwall of the welded tube made like this can reduce.
B, slitting: the steel plate slitting after pre-treatment of raw material is become the rear rolling of band;
C, steel plate after rolling is processed into welded tube, it comprises the following steps: butt welding → material stock → welded tube slightly deburring → cooling → welded tube precisive shaped → eddy current testing detection → aligning → fixed ruler cutting → inspection finished product welded tube inside and outside shaping → weld seam extruding → welding → weld seam is sheared in uncoiling → end, welding wherein in this step adopts water-soluble anti-rust oil to cool with the mixture of water, inside and outside weld seam, deburring then adopts inside and outside arc cutter to remove burr, inside and outside arc cutter is adopted to remove burr inside and outside weld seam during deburring, to remove after burr inside and outside weld seam highly not higher than 2/10 to ten/10ths of steel pipe thickness.In this step, butt welding is sheared in end can ensure the continuous of production by the docking of front and back two coil band; Material stock utilizes material storage loop to complete, and provides a surplus, be convenient to continuous prodution to follow-up processing; Welded tube is slightly shaping is complete on thick shaping die, makes steel band brake forming, and again through welding extruding, makes steel band bend the gap control appropriate orientation at rear position to be welded, and the width of weld seam is 1.4-2 times of thickness of steel pipe; And adopt waterborne anti-rust oil and the mixture of water to cool, make the cleaning of steel pipe in subsequent step convenient, without the need to the grease using the de-oiling fat aqueous solution to remove surface of welded pipe, described water-soluble anti-rust oil is with the mixture of water, and water-soluble anti-rust oil is 1:10-1:5 with the volume ratio of water.
D, welded tube is put into temperature is dry after soaking 3-5 minute in the clear water of 60 DEG C-100 DEG C; This dries and can adopt natural air drying or hot blast drying.
E, welded tube after drying carry out bright annealing, and annealing temperature is 755 DEG C-770 DEG C; The DX gas cooling that rock gas and air partial combustion produce is to the water constituents in removal DX gases after subzero 40 degree to subzero 30 degree, and then intensification passes into bright annealing furnace and carries out protecting and reducing; Tapping temperature 60-100 DEG C after the cooling of the rear steel pipe of annealing; In this step, after steel tube anneal, cooling adopts sub-sectional cooling, and first paragraph cooling adopts water pipe displacement cooling, and second segment cooling adopts water pipe displacement to add air cooling.Thickness of steel pipe is 1.Tapping temperature during 5-1.8mm is 55 DEG C, and tapping temperature when thickness of steel pipe is 1.8-2.2mm is 60 DEG C.The method removing the water constituent in DX gas is: be passed in adsorption dry tower by cooled DX gas and carry out water suction process, adsorption dry tower number is two, and after twice water suction, the water in DX gas is all removed, thus reaches the effect of bright annealing; After the cooling of the rear steel pipe of annealing, tapping temperature is less than 120 DEG C; Wherein, this DX gas cooling adopts coil pipe water cooling; water cooling hydraulic pressure used is 0.4-0.6MPa; this bright annealing furnace comprises annealing section and cooling section; whole annealing section and cooling section all carry out under oxygen-free environment; and be filled with DX gas and carry out protecting and reducing; and cooling adopts sub-sectional cooling after steel tube anneal, first paragraph cooling adopts water pipe displacement cooling, and second segment cooling adopts water pipe displacement to add air cooling; temperature height steel pipe can cool by first paragraph water pipe water pipe displacement cooling; second segment cools then water pipe displacement and air-cooled dual-cooled, accelerating cooling speed
Wherein, in described DX gas, H
2account for 10-12%, N
2account for 70-80%CO and account for 8-10%, all the other are CO
2.N
2play a protective role wherein, H
2with CO as reducing agent, the scale of reducible steel tube surface.
F, the steel pipe head draw after annealing is then wholely immersed in 5-7min in response type drawing oil, the oil temperature of this drawing oil is 50 DEG C-65 DEG C, and acid number is 87-93, the water yield 1.2%; Adopt to tilt to immerse during described steel pipe dipping drawing oil, can ensure that inner air tube is discharged completely like this.For ensureing that oil fully contacts with steel pipe inner wall, moving up and down steel pipe 2-3 time, when proposing on each, allowing oil partly discharge in steel pipe as far as possible, be conducive to sufficient reacting like this.The iron phosphating coat thickness generated after such steel pipe and drawing oil react is moderate, and the surface accuracy of steel pipe internal-surface is higher, and wall thickness is more easy to control, and affect in the factor of the frictional force of cylinder barrel, except internal surface friction factor, also have the uniformity of wall thickness, circularity, the straightness accuracy etc. of welded tube.
G, the steel pipe after step F is drained after first time cold-drawn;
Steel after H, first time cold-drawn is whole is immersed in 3-5min in response type drawing oil, and the oil temperature of this drawing oil is 55 DEG C-60 DEG C, and acid number is 85-95, the water yield 1.3%;
Second time cold-drawn after steel pipe after step H drains by I, like this, this welded tube make use of twice cold-drawn, and from the Wall thickness uniformity accurately controlling welded tube, twice cold-drawn decreases the defect of steel pipe internal-surface.
J, the steel pipe after second time cold-drawn to be aligned on straightening machine, ensure that straightness accuracy deviation is less than a thousandth;
K, tentatively cut off by steel pipe, the length of the tubing after cut-out is greater than the 3-5mm of drawing given size;
L, the requirement that length meets product is controlled to tubing two chamfer after cutting off;
M, cleaning → welding upper head plate 2 → steel pipe lower boreholes → bubble rust preventive oil → vanning.
In addition, the invention also discloses a kind of low-frictional force cylinder barrel of vibration damper, comprise the cylinder barrel body 1 and upper end cap be made up of welded tube, upper end and the described upper end cap of described cylinder barrel body 1 are welded and fixed, and the lower end of described cylinder barrel body 1 is for installing bottom valve, and the bottom of described cylinder barrel body 1 is provided with oil through 3, the outer diameter of described welded tube is D, inner diameter is d, and distance between the toes of a weld H=(the D-d) × I of this welded tube is penalty coefficient, and the scope of I is between 0.7-1.The width control system of weld seam, in this scope, so can guarantee the circularity of welded tube, and so for welding provides guarantee, meanwhile, the top and bottom of described cylinder barrel body 1 are provided with the inside and outside chamfering of r=0.2, facilitate installment work piston.The number of described oil through 3 is two and is radial oil through 3, and two oil throughs 3 are oppositely arranged.
The upper end of described cylinder barrel body 1 is fixedly installed gasket ring 4, and described upper end cap is welded on gasket ring 4, utilizes gasket ring 4 can improve firm welding degree between upper end cap and cylinder barrel body 1, reduces weld defects.
Detect through frictional force detection facility and draw following data:
| Side load(N) | Max.avg.friction force(N) |
| 230 | 19,5 |
| 450 | 28 |
| 650 | 35 |
The low-frictional force vibration damper that the cylinder barrel made in the present invention is produced for sky nanogram (Beijing) automobile absorber Co., Ltd.
Claims (9)
1. a making method for the low-frictional force cylinder barrel of vibration damper, comprises the following steps:
A, pre-treatment of raw material: the steel plate after shaping is carried out cold rolling, make cold rolling after steel plate thickness be cold rolling before steel plate thickness 1/3rd;
B, slitting: the steel plate slitting after pre-treatment of raw material is become the rear rolling of band;
C, the steel plate after rolling is processed into welded tube, it comprises the following steps: butt welding → material stock → welded tube slightly deburring → cooling → welded tube precisive shaped → eddy current testing detection → aligning → fixed ruler cutting → inspection finished product welded tube inside and outside shaping → weld seam extruding → welding → weld seam is sheared in uncoiling → end, welding wherein in this step adopts water-soluble anti-rust oil to cool with the mixture of water, inside and outside weld seam, deburring then adopts inside and outside arc cutter to remove burr, and distance between the toes of a weld is 1.4-2 times of thickness of steel pipe;
D, welded tube is put into temperature is dry after soaking 3-5 minute in the clear water of 60 DEG C-100 DEG C;
E, welded tube after drying carry out bright annealing, and annealing temperature is 755 DEG C-770 DEG C; The DX gas cooling that rock gas and air partial combustion produce is to the water constituents in removal DX gases after subzero 40 degree to subzero 30 degree, and then intensification passes into bright annealing furnace and carries out protecting and reducing; Tapping temperature 60-100 DEG C after the cooling of the rear steel pipe of annealing;
F, the steel pipe head draw after annealing is then wholely immersed in 5-7min in response type drawing oil, the oil temperature of this drawing oil is 50 DEG C-65 DEG C, and acid number is 87-93, the water yield 1.2%;
G, the steel pipe after step F is drained after first time cold-drawn;
Steel after H, first time cold-drawn is whole is immersed in 3-5min in response type drawing oil, and the oil temperature of this drawing oil is 55 DEG C-60 DEG C, and acid number is 85-95, the water yield 1.3%;
Second time cold-drawn after steel pipe after step H drains by I;
J, the steel pipe after second time cold-drawn to be aligned on straightening machine, ensure that straightness accuracy deviation is less than a thousandth;
K, tentatively cut off by steel pipe, the length of the tubing after cut-out is greater than the 3-5mm of drawing given size;
L, the requirement that length meets product is controlled to tubing two chamfer after cutting off;
M, cleaning → welding upper head plate → steel pipe lower boreholes → bubble rust preventive oil → vanning.
2. the making method of the low-frictional force cylinder barrel of a kind of vibration damper as described in claim 1, it is characterized in that: in step e, after steel tube anneal, cooling adopts sub-sectional cooling, first paragraph cooling adopts water pipe displacement cooling, and second segment cooling adopts water pipe displacement to add air cooling.
3. the making method of the low-frictional force cylinder barrel of a kind of vibration damper as described in claim 2, is characterized in that: tapping temperature when thickness of steel pipe is 1.5-1.8mm is 55 DEG C, and tapping temperature when thickness of steel pipe is 1.8-2.2mm is 60 DEG C.
4. the making method of the low-frictional force cylinder barrel of a kind of vibration damper as described in claim 3, it is characterized in that: inside and outside weld seam, during deburring, adopt inside and outside arc cutter to remove burr, to remove after burr inside and outside weld seam highly not higher than 2/10 to ten/10ths of steel pipe thickness.
5. the making method of the low-frictional force cylinder barrel of a kind of vibration damper as described in claim 4, is characterized in that: described water-soluble anti-rust oil is with the mixture of water, and water-soluble anti-rust oil is 1:10-1:5 with the volume ratio of water.
6. the low-frictional force cylinder barrel of a vibration damper, it is characterized in that: comprise the cylinder barrel body and upper end cap be made up of welded tube, upper end and the described upper end cap of described cylinder barrel body are welded and fixed, the lower end of described cylinder barrel body is for installing bottom valve, and the bottom of described cylinder barrel body is provided with oil through, and the outer diameter of described welded tube is D, inner diameter is d, this welded tube distance between the toes of a weld H=(D-d) × I, I are penalty coefficient, the scope of I is between 0.7-1.
7. the low-frictional force cylinder barrel of a kind of vibration damper as claimed in claim 6, is characterized in that: the top and bottom of described cylinder barrel body are provided with the inside and outside chamfering of r=0.2.
8. the low-frictional force cylinder barrel of a kind of vibration damper as claimed in claim 7, is characterized in that: the upper end of described cylinder barrel body is fixedly installed gasket ring, and described upper end cap is welded on gasket ring.
9. the low-frictional force cylinder barrel of a kind of vibration damper as claimed in claim 8, is characterized in that: the number of described oil through is two and is radial oil through, and two oil throughs are oppositely arranged.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410681356.6A CN104455168B (en) | 2014-11-24 | 2014-11-24 | A kind of low-frictional force cylinder barrel of amortisseur and its manufacture method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410681356.6A CN104455168B (en) | 2014-11-24 | 2014-11-24 | A kind of low-frictional force cylinder barrel of amortisseur and its manufacture method |
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| CN104455168A true CN104455168A (en) | 2015-03-25 |
| CN104455168B CN104455168B (en) | 2017-03-08 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106239054A (en) * | 2016-08-26 | 2016-12-21 | 嘉兴永信精密钢管有限公司 | A kind of play drum cylinder barrel the manufacturing process of amortisseur |
| CN106438567A (en) * | 2016-08-30 | 2017-02-22 | 徐州徐工液压件有限公司 | Hollow hydraulic cylinder part with one sealed end and manufacturing method thereof |
| CN108188664A (en) * | 2017-12-28 | 2018-06-22 | 北京北方车辆集团有限公司 | A kind of armored vehicle oil storage drum of shock absorber manufacturing method |
| CN109201771A (en) * | 2018-08-20 | 2019-01-15 | 嘉兴永信精密钢管有限公司 | A kind of monotubular of damper, which is swaged, seals manufacturing process |
| CN115091147A (en) * | 2022-08-25 | 2022-09-23 | 江苏立万精密制管有限公司 | Cold-drawing forming method of precision welded pipe |
| CN115122053A (en) * | 2022-07-22 | 2022-09-30 | 隆昌山川机械有限责任公司 | Processing technology for pickling-free phosphating of metal pipe of working cylinder of automobile shock absorber |
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| CN106239054A (en) * | 2016-08-26 | 2016-12-21 | 嘉兴永信精密钢管有限公司 | A kind of play drum cylinder barrel the manufacturing process of amortisseur |
| CN106239054B (en) * | 2016-08-26 | 2019-03-01 | 嘉兴永信精密钢管有限公司 | A kind of manufacturing process for playing drum cylinder barrel of damper |
| CN106438567A (en) * | 2016-08-30 | 2017-02-22 | 徐州徐工液压件有限公司 | Hollow hydraulic cylinder part with one sealed end and manufacturing method thereof |
| CN106438567B (en) * | 2016-08-30 | 2018-03-20 | 徐州徐工液压件有限公司 | A kind of the hollow hydraulic cylinder part and its processing method of one end closing |
| CN108188664A (en) * | 2017-12-28 | 2018-06-22 | 北京北方车辆集团有限公司 | A kind of armored vehicle oil storage drum of shock absorber manufacturing method |
| CN109201771A (en) * | 2018-08-20 | 2019-01-15 | 嘉兴永信精密钢管有限公司 | A kind of monotubular of damper, which is swaged, seals manufacturing process |
| CN115122053A (en) * | 2022-07-22 | 2022-09-30 | 隆昌山川机械有限责任公司 | Processing technology for pickling-free phosphating of metal pipe of working cylinder of automobile shock absorber |
| CN115091147A (en) * | 2022-08-25 | 2022-09-23 | 江苏立万精密制管有限公司 | Cold-drawing forming method of precision welded pipe |
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