CN102776465B - Method for applying amorphous nano materials to excircle of piston ring - Google Patents
Method for applying amorphous nano materials to excircle of piston ring Download PDFInfo
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- CN102776465B CN102776465B CN201210277008.3A CN201210277008A CN102776465B CN 102776465 B CN102776465 B CN 102776465B CN 201210277008 A CN201210277008 A CN 201210277008A CN 102776465 B CN102776465 B CN 102776465B
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Abstract
The invention discloses a method for applying amorphous nano materials to an excircle of a piston ring. Amorphous nano powder suitable for the piston ring can be manufactured into a functional coating of the excircle of the piston ring, thus the abrasion-resistant and corrosion-resistant capabilities of the piston ring under complex and severe working conditions can be improved.
Description
Technical field
The present invention relates to mechanical workout and hot-spraying techniques, particularly the technology of mechanical workout and thermospray in piston ring manufacture.
Background technology
Non-crystalline material " and " nano material " than crystalline material except having good electromagnetic property, also there are many good characteristics such as higher intensity, hardness, solidity to corrosion, wear resistance.At present, " non-crystalline material " and " nano material " is used for the aspect such as electronic technology, electromagnetic technique.Seldom have " non-crystalline material " or " nano material " as structural material applications in piston ring industry.
Therefore, need a kind of new technical scheme to address the above problem.
Summary of the invention
For the existing problem and shortage of above-mentioned prior art, the object of this invention is to provide a kind of method that amorphous nano material is applied to piston ring excircle.
For achieving the above object, the method that amorphous nano material is applied to piston ring excircle by the present invention can adopt following technical scheme:
A method that amorphous nano material is applied to piston ring excircle, comprises the steps:
(1), by the step of piston ring clamping;
(2), the step to piston ring turning;
(3), the step to the oil removing of piston ring high temperature;
(4) step, to piston ring excircle activation, employing inhaling type dry blasting sprays the activation of front cylindrical, sand grains kind: white fused alumina, 20～25 orders; Spraying pressure: 0.5 ± 0.05MPa, pressurized air must be dried in condensation; Jet length: 50 ± 10mm, sandblast cycle index: 3～4 times;
(5), piston ring excircle is carried out to the step of plasma spraying, wherein,
Working gas: main gas: high-purity argon gas Ar, purity 99.999%, top hole pressure 0.5 ± 0.05MPa, flow 2300 ~ 2400L/H;
Auxiliary gas (I): pure nitrogen gas N2, purity 99.99%, top hole pressure 0.5 ± 0.05MPa, flow 500 ~ 800L/H;
Auxiliary gas (I): high-purity hydrogen H2, purity 99.99%, top hole pressure 0.5 ± 0.05MPa, flow 150 ~ 200L/H;
Power parameter: electric current: 420～440A; Voltage: 55～60V;
Geometric parameter of nozzle: compression ratio: 3.5～4, compression angle: 45 °;
Automatic powder feeding system: internal powder conveying, powder feeding angle: 90 °, powder feeding hole distance: 9mm, powder sending quantity 20～25g/min;
Intake method: tangential admission;
Operating distance: anode and cathode closest range: 1～1.5mm; Spray distance: 65～75mm;
Spraying rate: spray gun translational speed: 350mm/min, workpiece rotational frequency 150～250rpm;
The type of cooling: adopt pressurized air to force cooling;
(6), piston ring is carried out the step of cylindrical grinding disintegration: by the external grinding that encircles after spraying to fixed measure and tear folder open, this axle collar disintegrates into three groups of every group of length≤50mm, and in every ring group, every loop is bonded together mutually due to the adhesion of cylindrical coating;
(7) step that, ring body moulding mill separates: the anti-outline shape that with CBN emery wheel, abrasive wheel forming correction is become to emery wheel.
The present invention is compared with prior art: the amorphous nano powder that is applicable to piston ring can be made to the functional coat that become piston ring excircle, thereby improve piston ring resistance to wearing under complicated, bad working environments, erosion-resisting ability.
Embodiment
Below in conjunction with embodiment, further illustrate the present invention, should understand following embodiment is only not used in and limits the scope of the invention for the present invention is described, after having read the present invention, those skilled in the art all fall within the application's claims limited range to the amendment of the various equivalent form of values of the present invention.
The present invention discloses a kind of method that amorphous nano material is applied to piston ring excircle, comprises the steps:
(1), by the step of piston ring clamping, clamping size: (φ D+0.63) ± 0.02, end-gaps: 0.30～0.40, wherein D is piston ring cylinder diameter, every axle fills 3 groups, every group of length≤50mm, two ends, every group of left and right add a slice gasket ring, every loop free open 180 ° of clampings that must mutually stagger;
(2) step, to piston ring turning, after finish turning: do not tear folder open, protruding place external diameter: (φ D+0.4) ± 0.02, recess external diameter: (φ D-0.05) ± 0.005;
(3) step, to the oil removing of piston ring high temperature, adopts in the baking oven of 280 DEG C of temperature, crosses the mandrel integral heat insulation 1.5 hours of cylindrical with clamping car;
(4) step, to piston ring excircle activation, employing inhaling type dry blasting sprays the activation of front cylindrical, sand grains kind: white fused alumina, 20～25 orders; Spraying pressure: 0.5 ± 0.05MPa, pressurized air must be dried in condensation; Jet length: 50 ± 10mm, sandblast cycle index: 3～4 times;
(5), piston ring excircle is carried out to the step of plasma spraying, wherein,
Working gas: main gas: high-purity argon gas Ar, purity 99.999%, top hole pressure 0.5 ± 0.05MPa, flow 2300 ~ 2400L/H;
Auxiliary gas (I): pure nitrogen gas N2, purity 99.99%, top hole pressure 0.5 ± 0.05MPa, flow 500 ~ 800L/H;
Auxiliary gas (I): high-purity hydrogen H2, purity 99.99%, top hole pressure 0.5 ± 0.05MPa, flow 150 ~ 200L/H;
Power parameter: electric current: 420～440A; Voltage: 55～60V;
Geometric parameter of nozzle: compression ratio: 3.5～4, compression angle: 45 °;
Automatic powder feeding system: internal powder conveying, powder feeding angle: 90 °, powder feeding hole distance: 9mm, powder sending quantity 20～25g/min;
Intake method: tangential admission;
Operating distance: anode and cathode closest range: 1～1.5mm; Spray distance: 65～75mm;
Spraying rate: spray gun translational speed: 350mm/min, workpiece rotational frequency 150～250rpm;
The type of cooling: adopt pressurized air to force cooling;
(6), piston ring is carried out the step of cylindrical grinding disintegration: by the external grinding that encircles after spraying to fixed measure and tear folder open, this axle collar disintegrates into three groups of every group of length≤50mm, and in every ring group, every loop is bonded together mutually due to the adhesion of cylindrical coating;
(7) step that, ring body moulding mill separates: the anti-outline shape that with CBN emery wheel, abrasive wheel forming correction is become to emery wheel.
Design specialized machining process of the present invention, guarantees the homogeneity≤0.02mm of piston ring excircle coating.
The present invention designs, tests, selects rational spraying method to make the coating of the mixed phase structure of piston ring excircle deposited amorphous body and nanocrystal, porosity≤10% of coating simultaneously, microhardness >=1000HV0.1; Coating is combined with matrix well, answer >=12Kg/mm2 of the tensile strength of coating, shearing resistance >=2Kg/mm2.
Total deformation < 10% after control piston ring of the present invention thermospray.
The piston ring excircle amorphous nano coating of making by above-mentioned flow process and technological specification has following good effect:
1, with homogeneity≤0.02 of loop coat-thickness, specifically see the following form
2, the micro-performance test of coating:
3, the Mechanics Performance Testing of coating:
4, piston ring deflection test (being changed to beasurement base with piston ring free open value)
Claims (3)
1. a method that amorphous nano material is applied to piston ring excircle, is characterized in that: comprise the steps:
(1), by the step of piston ring clamping;
(2), the step to piston ring turning;
(3), the step to the oil removing of piston ring high temperature;
(4) step, to piston ring excircle activation, employing inhaling type dry blasting sprays the activation of front cylindrical, sand grains kind: white fused alumina, 20～25 orders; Spraying pressure: 0.5 ± 0.05MPa, pressurized air must be dried in condensation; Jet length: 50 ± 10mm, sandblast cycle index: 3～4 times;
(5), piston ring excircle is carried out to the step of plasma spraying, wherein,
Working gas: main gas: high-purity argon gas Ar, purity 99.999%, top hole pressure 0.5 ± 0.05MPa, flow 2300～2400L/H;
Auxiliary gas (I): pure nitrogen gas N2, purity 99.99%, top hole pressure 0.5 ± 0.05MPa, flow 500～800L/H;
Auxiliary gas (II): high-purity hydrogen H2, purity 99.99%, top hole pressure 0.5 ± 0.05MPa, flow 150～200L/H;
Power parameter: electric current: 420～440A; Voltage: 55～60V;
Geometric parameter of nozzle: compression ratio: 3.5～4, compression angle: 45 °;
Automatic powder feeding system: internal powder conveying, powder feeding angle: 90 °, powder feeding hole distance: 9mm, powder sending quantity 20～25g/min;
Intake method: tangential admission;
Operating distance: anode and cathode closest range: 1～1.5mm; Spray distance: 65～75mm;
Spraying rate: spray gun translational speed: 350mm/min, workpiece rotational frequency 150～250rpm;
The type of cooling: adopt pressurized air to force cooling;
(6), the step of piston ring being carried out to cylindrical grinding disintegration: to fixed measure and tear folder open, this axle collar disintegrates into three groups of every group of length≤50mm by the external grinding encircling after spraying, and every loop is bonded together mutually due to the adhesion of cylindrical coating in every ring group;
(7) step that, ring body moulding mill separates: the anti-outline shape that with CBN emery wheel, abrasive wheel forming correction is become to emery wheel.
2. the method that amorphous nano material is applied to piston ring excircle as claimed in claim 1, it is characterized in that: in step (1), clamping size: (φ D+0.63) ± 0.02, end-gaps: 0.30～0.40, wherein D is piston ring cylinder diameter, and every axle fills 3 groups, every group of length≤50mm, two ends, every group of left and right add a slice gasket ring, every loop free open 180 ° of clampings that must mutually stagger.
3. the method that amorphous nano material is applied to piston ring excircle as claimed in claim 1, is characterized in that: in step (3), adopt in the baking oven of 280 DEG C of temperature, cross the mandrel integral heat insulation 1.5 hours of cylindrical with clamping car.
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| CN201210277008.3A CN102776465B (en) | 2012-08-06 | 2012-08-06 | Method for applying amorphous nano materials to excircle of piston ring |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103602943A (en) * | 2013-11-25 | 2014-02-26 | 佛山华智新材料有限公司 | Thin-wall substrate spraying technology |
| CN108825776A (en) * | 2018-05-25 | 2018-11-16 | 安徽尚忠活塞环有限公司 | A kind of multipiece ring and preparation method thereof of gas-tight leakage |
| CN108754394A (en) * | 2018-05-25 | 2018-11-06 | 安徽尚忠活塞环有限公司 | A kind of piston ring face processing method using aluminium oxide |
| CN108555550A (en) * | 2018-05-25 | 2018-09-21 | 安徽尚忠活塞环有限公司 | The preparation process of Determination of multiple metal elements mixing type piston ring |
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- 2012-08-06 CN CN201210277008.3A patent/CN102776465B/en active Active
Non-Patent Citations (4)
| Title |
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| 内燃机活塞环陶瓷涂层研制;王汉林等;《表面技术》;20071231;91-93 * |
| 姜超平.等离子喷涂对涂层非晶含量的影响.《热加工工艺》.2009,87-89. |
| 王汉林等.内燃机活塞环陶瓷涂层研制.《表面技术》.2007,91-93. |
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Denomination of invention: A method of applying amorphous nano materials to the outer circle of piston ring Effective date of registration: 20201203 Granted publication date: 20140813 Pledgee: Bank of China Limited by Share Ltd. Lishui branch Pledgor: NANJING FEIYAN PISTON RING Co.,Ltd. Registration number: Y2020980008801 |
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