阅读说明：本技术 一种发动机活塞环热喷涂方法 (Engine piston ring thermal spraying method ) 是由 周伟 于 2021-08-09 设计创作，主要内容包括：本发明提供了一种发动机活塞环热喷涂方法,属于活塞环技术领域。该发动机活塞环热喷涂方法包括如下步骤：S1：夹持活塞环中间两侧,通过夹持设备夹持在活塞环缺口正对面中间的两侧,对活塞环进行固定；S2：预热,通过预热设备对活塞环进行预热,使活塞环加热到合适的温度；S3：热喷涂一,通过喷涂设备对活塞环除了夹持部位的外表面进行喷涂一定厚度的高强度耐磨合涂层。本申请通过夹持设备依次夹持活塞环中间两侧和活塞环缺口端两侧,减少人工辅助更换活塞环夹持部位的步骤,在减少喷涂时间和人们劳动强度的同时,可提高喷涂精度和质量,有利于热喷涂的快速进行和提高活塞环的强度与耐磨性,进而有利于提高发动机质量。(The invention provides a thermal spraying method for a piston ring of an engine, belonging to the technical field of piston rings. The engine piston ring thermal spraying method comprises the following steps: s1: clamping two sides of the middle of the piston ring, clamping two sides of the middle of the opposite side of the gap of the piston ring through clamping equipment, and fixing the piston ring; s2: preheating, namely preheating the piston ring through preheating equipment to heat the piston ring to a proper temperature; s3: and firstly, spraying a high-strength wear-resistant coating with a certain thickness on the outer surface of the piston ring except the clamping part by using spraying equipment. This application passes through centre gripping equipment centre gripping piston ring in proper order both sides and piston ring breach end both sides, reduces the step that artifical supplementary change piston ring centre gripping position, when reducing spraying time and people intensity of labour, can improve spraying precision and quality, is favorable to hot spraying's quick going and improves the intensity and the wearability of piston ring, and then is favorable to improving engine quality.)

1. A thermal spraying method for a piston ring of an engine is characterized by comprising the following steps:

s1: clamping two sides of the middle of the piston ring, clamping two sides of the middle of the opposite side of the gap of the piston ring through clamping equipment, and fixing the piston ring;

s2: preheating, namely preheating the piston ring through preheating equipment to heat the piston ring to a proper temperature;

s3: thermal spraying, namely spraying a high-strength wear-resistant composite coating with a certain thickness on the outer surface of the piston ring except for the clamping part by using spraying equipment;

s4: clamping two sides of the gap end of the piston ring, clamping two ends of the gap of the piston ring through clamping equipment, and fixing the piston ring;

s5: secondly, spraying a high-strength wear-resistant composite coating with the same thickness as that of the step S3 on the residual and un-sprayed outer surface of the piston ring through spraying equipment;

s6: and (4) preserving heat and cooling, namely preserving heat of the piston ring through heat preservation equipment, preserving heat for a period of time and cooling to room temperature.

2. The thermal spraying method for the piston ring of the engine as claimed in claim 1, wherein the clamping device of step S1 is in a dust-free environment, and the clamping device can resist high temperature.

3. The engine piston ring thermal spraying method as claimed in claim 1, wherein the clamping device of step S1 is clamped on two sides of the piston ring in a horizontal state, and the clamping device can drive the piston ring to turn over by three hundred and sixty degrees.

4. The engine piston ring thermal spraying method as claimed in claim 1, wherein the preheating device of step S2 heats the piston ring by indirect heating, and the preheating temperature of the whole piston ring is uniform.

5. The engine piston ring thermal spraying method as claimed in claim 1, wherein the step S3 spray equipment and the step S5 spray equipment are plasma spray equipment, and the plasma spray equipment comprises a spray gun, a power supply, a powder feeder, a heat exchanger, a gas supply system and a control box.

6. The engine piston ring thermal spraying method as claimed in claim 5, wherein the spray gun in the step S3 spray equipment and the step S5 spray equipment is a non-transferred arc plasma generator, and the power supply is a full wave rectifier.

7. The engine piston ring thermal spraying method as claimed in claim 5, wherein the spray guns of the step S3 spraying device and the step S5 spraying device are perpendicular to the piston ring spraying plane.

8. The engine piston ring thermal spraying method as claimed in claim 5, wherein the plasma gas of the step S3 spray equipment and the step S5 spray equipment is nitrogen gas, and the high-strength wear-resistant coating is composed of C, Si, Mn, S, Cr, Mo, Cu, Ni and Fe.

9. The thermal spraying method for the piston ring of the engine as claimed in claim 1, wherein the high-strength wear-resistant co-coating of step S3 and the high-strength wear-resistant co-coating of step S5 are in powder form, and the thickness of the high-strength wear-resistant co-coating is 20-30 microns.

10. The thermal spraying method for the piston ring of the engine as claimed in claim 1, wherein the step S6 is performed by using hot air to cool the piston ring by natural air cooling to room temperature.

Technical Field

The application relates to the field of piston rings, in particular to a thermal spraying method for an engine piston ring.

Background

The piston ring is used for imbedding the inside becket of piston slot, and the piston ring divide into two kinds: a compression ring and an oil ring. The compression ring can be used for sealing the combustible mixed gas in the combustion chamber; the engine oil ring is used for scraping redundant engine oil on the cylinder, the thermal spraying efficiency of the existing engine piston ring thermal spraying method is low, the clamping position needs to be replaced manually for multiple times in the spraying process to spray the surface of the piston ring, the spraying time and the labor intensity of people are increased by the mode, the spraying precision and the spraying quality can be reduced by replacing the clamping position for multiple times, and the rapid implementation of the thermal spraying is not facilitated.

How to invent a thermal spraying method for engine piston rings to improve the problems becomes a problem to be solved by the technical personnel in the field.

Disclosure of Invention

In order to make up for the defects, the application provides a thermal spraying method for an engine piston ring, and aims to solve the problem of low thermal spraying efficiency.

The embodiment of the invention provides a thermal spraying method for a piston ring of an engine, which comprises the following steps:

s1: clamping two sides of the middle of the piston ring, clamping two sides of the middle of the opposite side of the gap of the piston ring through clamping equipment, and fixing the piston ring;

s2: preheating, namely preheating the piston ring through preheating equipment to heat the piston ring to a proper temperature;

s3: thermal spraying, namely spraying a high-strength wear-resistant composite coating with a certain thickness on the outer surface of the piston ring except for the clamping part by using spraying equipment;

s4: clamping two sides of the gap end of the piston ring, clamping two ends of the gap of the piston ring through clamping equipment, and fixing the piston ring;

s5: secondly, spraying a high-strength wear-resistant composite coating with the same thickness as that of the step S3 on the residual and un-sprayed outer surface of the piston ring through spraying equipment;

s6: and (4) preserving heat and cooling, namely preserving heat of the piston ring through heat preservation equipment, preserving heat for a period of time and cooling to room temperature.

In the implementation process, the clamping device is used for reducing the time for replacing the clamping part of the piston ring, reducing the spraying time and improving the spraying precision, and further improving the efficiency and the effect of thermal spraying.

In a specific embodiment, the step S1 is performed in a dust-free environment, and the clamping device can resist high temperature.

In the implementation process, the clamping equipment is in a dust-free environment, so that the spraying quality of the high-strength wear-resistant composite coating can be improved, the dust is not easy to pollute the high-strength wear-resistant composite coating, and the probability of generating bubbles and gaps is reduced.

In a specific embodiment, the clamping device of step S1 clamps the piston ring on two sides of the horizontal state, and the clamping device can drive the piston ring to turn over by three hundred and sixty degrees.

In the implementation process, the clamping equipment drives the piston ring to rotate, so that the time for replacing the clamping part can be reduced, and the spraying efficiency is further improved.

In a specific embodiment, the preheating device of step S2 heats the piston ring by indirect heating, and the preheating temperature of the whole piston ring is uniform.

In the implementation process, the preheating device is used for enabling the piston ring to be conveniently bonded with the high-strength wear-resistant coating, and further improving the strength between the high-strength wear-resistant coatings of the piston ring.

In a specific embodiment, the step S3 spray coating device and the step S5 spray coating device are plasma spray coating devices, and the plasma spray coating devices include a spray gun, a power supply, a powder feeder, a heat exchanger, a gas supply system, and a control block.

In the above-mentioned realization process, the spray gun is equipped with the electricity, gas, powder and water of the whole system, the power supply is used for supplying the spray gun with direct current, the powder feeder is used for storing the sprayed powder and feeding the powder to the spray gun according to the technological requirements, the heat exchanger is mainly used for effectively cooling the spray gun and prolonging the service life of the spray nozzle, the gas supply system includes the supply system of working gas and powder feeding gas, and the control frame is used for regulating and controlling water, electricity, gas and powder.

In a specific embodiment, the spray gun in the step S3 spray coating device and the step S5 spray coating device is a non-transferred arc plasma generator, and the power supply is a full wave rectifier.

In a specific embodiment, the spray guns of the step S3 spray coating device and the step S5 spray coating device are perpendicular to the spray plane of the piston ring.

In the implementation process, the spraying quality can be improved by the fact that the spraying gun is perpendicular to the spraying plane of the piston ring, the generation of cavities is reduced, the coating is loosened, and the spraying quality of the high-strength wear-resistant coating is improved.

In a specific embodiment, the step S3 spray coating device and the step S5 spray coating device plasma gas is nitrogen and the high strength wear-in resistant coating is comprised of C, Si, Mn, S, Cr, Mo, Cu, Ni, and Fe.

In the implementation process, the high-strength wear-resistant composite coating is used for improving the strength and the wear resistance of the piston ring.

In a specific embodiment, the high strength hardfacing coating of step S3 and the high strength hardfacing coating of step S5 are in powder form, and the high strength hardfacing coating has a thickness in the range of 20 to 30 microns.

In a specific embodiment, the heat preservation device of step S6 is used for heat preservation by hot air, and the cooling mode is natural air cooling to room temperature.

In the implementation process, the heat preservation equipment is used for enabling the connectivity between the piston ring and the high-strength wear-resistant coating to be better, and the spraying quality of the high-strength wear-resistant coating is improved.

The invention has the beneficial effects that: through centre gripping equipment centre gripping piston ring in proper order both sides and piston ring breach end both sides, reduce the step of artifical supplementary change piston ring centre gripping position, when reducing spraying time and people intensity of labour, can improve spraying precision and quality, be favorable to hot spraying's fast going on and improve the intensity and the wearability of piston ring, and then be favorable to improving engine quality.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Example one

The invention provides a thermal spraying method for a piston ring of an engine, which comprises the following steps:

s1: clamping two sides of the middle of the piston ring, clamping two sides of the middle of the opposite side of the gap of the piston ring through clamping equipment, and fixing the piston ring; s2: preheating, namely preheating the piston ring through preheating equipment to heat the piston ring to a proper temperature; s3: thermal spraying, namely spraying a high-strength wear-resistant composite coating with a certain thickness on the outer surface of the piston ring except for the clamping part by using spraying equipment; s4: clamping two sides of the gap end of the piston ring, clamping two ends of the gap of the piston ring through clamping equipment, and fixing the piston ring; s5: secondly, spraying a high-strength wear-resistant composite coating with the same thickness as that of the step S3 on the residual and un-sprayed outer surface of the piston ring through spraying equipment; s6: and (4) preserving heat and cooling, namely preserving heat of the piston ring through heat preservation equipment, preserving heat for a period of time and cooling to room temperature.

In some specific embodiments, the clamping device in step S1 is in a dust-free environment, the clamping device can resist high temperature, and the clamping device in the dust-free environment can improve the spraying quality of the high-strength wear-resistant co-coat layer, so that dust is not easy to contaminate the high-strength wear-resistant co-coat layer, and the probability of generating bubbles and gaps is reduced; step S1, clamping devices are clamped on two sides of the piston ring in a horizontal state, the clamping devices can drive the piston ring to turn over for three hundred and sixty degrees, and the clamping devices drive the piston ring to rotate, so that the time for replacing a clamping part can be reduced, and the spraying efficiency is improved; step S2, preheating equipment is used for heating the piston ring in an indirect heating mode, the integral preheating temperature of the piston ring is uniform, and the preheating equipment is used for enabling the piston ring to be conveniently bonded with the high-strength wear-resistant composite coating, so that the strength between the high-strength wear-resistant composite coatings of the piston ring is improved; step S3 and step S5, the spraying equipment is plasma spraying equipment, the plasma spraying equipment includes spray gun, power, powder feeder, heat exchanger, air feed system and control frame, the spray gun concentrates the electricity, gas, powder, water, etc. of the whole system, the power is used for supplying the direct current to the spray gun, the powder feeder is used for storing the spraying powder and delivering the device of the powder to the spray gun according to the technological requirement, the heat exchanger is mainly used for making the spray gun obtain the effective cooling, achieve the goal of making the spray nozzle prolong the life, the air feed system includes the supply system of working gas and powder-feeding gas, the control frame is used for regulating and controlling water, electricity, gas, powder; the spray gun in the step S3 spray equipment and the step S5 spray equipment is a non-transferred arc plasma generator, and the power supply is a full-wave rectifier; the spray gun of the step S3 spray equipment and the spray gun of the step S5 spray equipment are perpendicular to the spray plane of the piston ring, the spray quality can be improved by the fact that the spray gun is perpendicular to the spray plane of the piston ring, the generation of cavities and the loosening of the coating are reduced, and the spray quality of the high-strength wear-resistant composite coating is improved; the plasma gas of the spraying equipment in the step S3 and the plasma gas of the spraying equipment in the step S5 are nitrogen, the high-strength wear-resistant coating is composed of C, Si, Mn, S, Cr, Mo, Cu, Ni and Fe, and the high-strength wear-resistant coating is used for improving the strength and the wear resistance of the piston ring; step S3 the high-strength wear-resistant composite coating and step S5 the high-strength wear-resistant composite coating are powder, and the thickness of the high-strength wear-resistant composite coating is 20 microns; and step S6, the heat preservation equipment is used for preserving heat through hot air, the cooling mode is natural air cooling to room temperature, the heat preservation equipment is used for enabling the connectivity between the piston ring and the high-strength wear-resistant coating to be better, and the spraying quality of the high-strength wear-resistant coating is improved.

Example two

The invention also provides a thermal spraying method for the piston ring of the engine, which comprises the following steps:

s1: clamping two sides of the middle of the piston ring, clamping two sides of the middle of the opposite side of the gap of the piston ring through clamping equipment, and fixing the piston ring; s2: preheating, namely preheating the piston ring through preheating equipment to heat the piston ring to a proper temperature; s3: thermal spraying, namely spraying a high-strength wear-resistant composite coating with a certain thickness on the outer surface of the piston ring except for the clamping part by using spraying equipment; s4: clamping two sides of the gap end of the piston ring, clamping two ends of the gap of the piston ring through clamping equipment, and fixing the piston ring; s5: secondly, spraying a high-strength wear-resistant composite coating with the same thickness as that of the step S3 on the residual and un-sprayed outer surface of the piston ring through spraying equipment; s6: heat preservation and cooling, namely preserving the heat of the piston ring through heat preservation equipment, preserving the heat for a period of time, and cooling to room temperature; and S1, the clamping equipment is in a dust-free environment, the clamping equipment can resist high temperature, the clamping equipment is in the dust-free environment, the spraying quality of the high-strength wear-resistant composite coating can be improved, dust is not easy to pollute the high-strength wear-resistant composite coating, and the probability of bubbles and gaps is reduced.

In some specific embodiments, the clamping device in step S1 is clamped at two sides of the piston ring in the horizontal state, and the clamping device can drive the piston ring to turn over by three hundred and sixty degrees, and the clamping device drives the piston ring to rotate, so that the time for replacing the clamping part can be reduced, and the spraying efficiency can be improved; step S2, preheating equipment is used for heating the piston ring in an indirect heating mode, the integral preheating temperature of the piston ring is uniform, and the preheating equipment is used for enabling the piston ring to be conveniently bonded with the high-strength wear-resistant composite coating, so that the strength between the high-strength wear-resistant composite coatings of the piston ring is improved; step S3 and step S5, the spraying equipment is plasma spraying equipment, the plasma spraying equipment includes spray gun, power, powder feeder, heat exchanger, air feed system and control frame, the spray gun concentrates the electricity, gas, powder, water, etc. of the whole system, the power is used for supplying the direct current to the spray gun, the powder feeder is used for storing the spraying powder and delivering the device of the powder to the spray gun according to the technological requirement, the heat exchanger is mainly used for making the spray gun obtain the effective cooling, achieve the goal of making the spray nozzle prolong the life, the air feed system includes the supply system of working gas and powder-feeding gas, the control frame is used for regulating and controlling water, electricity, gas, powder; the spray gun in the step S3 spray equipment and the step S5 spray equipment is a non-transferred arc plasma generator, and the power supply is a full-wave rectifier; the spray gun of the step S3 spray equipment and the spray gun of the step S5 spray equipment are perpendicular to the spray plane of the piston ring, the spray quality can be improved by the fact that the spray gun is perpendicular to the spray plane of the piston ring, the generation of cavities and the loosening of the coating are reduced, and the spray quality of the high-strength wear-resistant composite coating is improved; the plasma gas of the spraying equipment in the step S3 and the plasma gas of the spraying equipment in the step S5 are nitrogen, the high-strength wear-resistant coating is composed of C, Si, Mn, S, Cr, Mo, Cu, Ni and Fe, and the high-strength wear-resistant coating is used for improving the strength and the wear resistance of the piston ring; step S3 the high-strength wear-resistant composite coating and step S5 the high-strength wear-resistant composite coating are powder, and the thickness of the high-strength wear-resistant composite coating is 25 microns; and step S6, the heat preservation equipment is used for preserving heat through hot air, the cooling mode is natural air cooling to room temperature, the heat preservation equipment is used for enabling the connectivity between the piston ring and the high-strength wear-resistant coating to be better, and the spraying quality of the high-strength wear-resistant coating is improved.

EXAMPLE III

The invention also provides a thermal spraying method for the piston ring of the engine, which comprises the following steps:

s1: clamping two sides of the middle of the piston ring, clamping two sides of the middle of the opposite side of the gap of the piston ring through clamping equipment, and fixing the piston ring; s2: preheating, namely preheating the piston ring through preheating equipment to heat the piston ring to a proper temperature; s3: thermal spraying, namely spraying a high-strength wear-resistant composite coating with a certain thickness on the outer surface of the piston ring except for the clamping part by using spraying equipment; s4: clamping two sides of the gap end of the piston ring, clamping two ends of the gap of the piston ring through clamping equipment, and fixing the piston ring; s5: secondly, spraying a high-strength wear-resistant composite coating with the same thickness as that of the step S3 on the residual and un-sprayed outer surface of the piston ring through spraying equipment; s6: heat preservation and cooling, namely preserving the heat of the piston ring through heat preservation equipment, preserving the heat for a period of time, and cooling to room temperature; s1, the clamping equipment is in a dust-free environment, the clamping equipment can resist high temperature, the clamping equipment is in the dust-free environment, the spraying quality of the high-strength wear-resistant composite coating can be improved, dust is not easy to pollute the high-strength wear-resistant composite coating, and the probability of generating bubbles and gaps is reduced; step S1 clamping equipment centre gripping is in piston ring horizontality both sides, and clamping equipment can drive the piston ring and carry out three hundred sixty degrees upset, and clamping equipment drives the rotatory reducible time of changing the centre gripping position of piston ring, and then improves spraying efficiency.

In some specific embodiments, the preheating device in step S2 heats the piston ring by indirect heating, the preheating temperature of the entire piston ring is uniform, and the preheating device is used to facilitate the bonding of the piston ring to the high-strength wear-resistant composite coating, thereby improving the strength between the high-strength wear-resistant composite coatings of the piston ring; step S3 and step S5, the spraying equipment is plasma spraying equipment, the plasma spraying equipment includes spray gun, power, powder feeder, heat exchanger, air feed system and control frame, the spray gun concentrates the electricity, gas, powder, water, etc. of the whole system, the power is used for supplying the direct current to the spray gun, the powder feeder is used for storing the spraying powder and delivering the device of the powder to the spray gun according to the technological requirement, the heat exchanger is mainly used for making the spray gun obtain the effective cooling, achieve the goal of making the spray nozzle prolong the life, the air feed system includes the supply system of working gas and powder-feeding gas, the control frame is used for regulating and controlling water, electricity, gas, powder; the spray gun in the step S3 spray equipment and the step S5 spray equipment is a non-transferred arc plasma generator, and the power supply is a full-wave rectifier; the spray gun of the step S3 spray equipment and the spray gun of the step S5 spray equipment are perpendicular to the spray plane of the piston ring, the spray quality can be improved by the fact that the spray gun is perpendicular to the spray plane of the piston ring, the generation of cavities and the loosening of the coating are reduced, and the spray quality of the high-strength wear-resistant composite coating is improved; the plasma gas of the spraying equipment in the step S3 and the plasma gas of the spraying equipment in the step S5 are nitrogen, the high-strength wear-resistant coating is composed of C, Si, Mn, S, Cr, Mo, Cu, Ni and Fe, and the high-strength wear-resistant coating is used for improving the strength and the wear resistance of the piston ring; step S3 the high-strength wear-resistant composite coating and step S5 the high-strength wear-resistant composite coating are powder, and the thickness of the high-strength wear-resistant composite coating is 30 microns; and step S6, the heat preservation equipment is used for preserving heat through hot air, the cooling mode is natural air cooling to room temperature, the heat preservation equipment is used for enabling the connectivity between the piston ring and the high-strength wear-resistant coating to be better, and the spraying quality of the high-strength wear-resistant coating is improved.

The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present application, and shall be covered by the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.