CN115740988A - Manufacturing process of corrosion-resistant camshaft - Google Patents
Manufacturing process of corrosion-resistant camshaft Download PDFInfo
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- CN115740988A CN115740988A CN202211588349.2A CN202211588349A CN115740988A CN 115740988 A CN115740988 A CN 115740988A CN 202211588349 A CN202211588349 A CN 202211588349A CN 115740988 A CN115740988 A CN 115740988A
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- parts
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- camshaft
- resistant coating
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- 238000005260 corrosion Methods 0.000 title claims abstract description 68
- 230000007797 corrosion Effects 0.000 title claims abstract description 68
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000011248 coating agent Substances 0.000 claims abstract description 43
- 238000000576 coating method Methods 0.000 claims abstract description 43
- 238000010791 quenching Methods 0.000 claims abstract description 26
- 230000000171 quenching effect Effects 0.000 claims abstract description 26
- 238000000034 method Methods 0.000 claims abstract description 25
- 238000005245 sintering Methods 0.000 claims abstract description 20
- 238000000227 grinding Methods 0.000 claims abstract description 19
- 238000007590 electrostatic spraying Methods 0.000 claims abstract description 12
- 229910001141 Ductile iron Inorganic materials 0.000 claims abstract description 11
- 238000005507 spraying Methods 0.000 claims abstract description 10
- 238000004140 cleaning Methods 0.000 claims abstract description 7
- 238000005498 polishing Methods 0.000 claims abstract description 7
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 34
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 34
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 34
- 239000000843 powder Substances 0.000 claims description 34
- SVONRAPFKPVNKG-UHFFFAOYSA-N 2-ethoxyethyl acetate Chemical compound CCOCCOC(C)=O SVONRAPFKPVNKG-UHFFFAOYSA-N 0.000 claims description 17
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 17
- 239000010432 diamond Substances 0.000 claims description 17
- 229910003460 diamond Inorganic materials 0.000 claims description 17
- JBSLOWBPDRZSMB-FPLPWBNLSA-N dibutyl (z)-but-2-enedioate Chemical compound CCCCOC(=O)\C=C/C(=O)OCCCC JBSLOWBPDRZSMB-FPLPWBNLSA-N 0.000 claims description 17
- 239000010433 feldspar Substances 0.000 claims description 17
- -1 phenoxy propyl Chemical group 0.000 claims description 17
- 235000010333 potassium nitrate Nutrition 0.000 claims description 17
- 239000004323 potassium nitrate Substances 0.000 claims description 17
- 229910052708 sodium Inorganic materials 0.000 claims description 17
- 239000011734 sodium Substances 0.000 claims description 17
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 17
- 239000004408 titanium dioxide Substances 0.000 claims description 17
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 claims description 14
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 12
- 238000003801 milling Methods 0.000 claims description 12
- 238000005553 drilling Methods 0.000 claims description 6
- 238000005496 tempering Methods 0.000 claims description 6
- 238000000498 ball milling Methods 0.000 claims description 5
- 238000001514 detection method Methods 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- GNFTZDOKVXKIBK-UHFFFAOYSA-N 3-(2-methoxyethoxy)benzohydrazide Chemical compound COCCOC1=CC=CC(C(=O)NN)=C1 GNFTZDOKVXKIBK-UHFFFAOYSA-N 0.000 claims description 3
- BAPJBEWLBFYGME-UHFFFAOYSA-N Methyl acrylate Chemical compound COC(=O)C=C BAPJBEWLBFYGME-UHFFFAOYSA-N 0.000 description 6
- 238000010438 heat treatment Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000005587 bubbling Effects 0.000 description 3
- 238000005336 cracking Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- 239000007921 spray Substances 0.000 description 3
- 229910000851 Alloy steel Inorganic materials 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
Landscapes
- Coating By Spraying Or Casting (AREA)
Abstract
The invention discloses a manufacturing process of a corrosion-resistant camshaft, which comprises the following steps: providing a shaft-shaped blank of nodular cast iron, sending the shaft-shaped blank into a machining center, turning a shaft neck, opening a gear, profiling a cam and deburring; then quenching at medium frequency to improve the hardness, finally spraying a corrosion-resistant coating by adopting a dry electrostatic spraying process, sintering at high temperature, finely grinding and polishing the shaft neck, and cleaning. According to the invention, the shape of the camshaft is machined, then the corrosion-resistant coating is electrostatically sprayed by a dry method and is sintered at a high temperature, so that the adhesiveness is increased, the corrosion resistance of the surface of the camshaft is improved, and the troubles of easy corrosion and low durability of the conventional camshaft are avoided.
Description
Technical Field
The invention belongs to the technical field of camshafts, and particularly relates to a manufacturing process of a corrosion-resistant camshaft.
Background
The camshaft is a component in a piston engine. Its function is to control the opening and closing action of the valve. Although the rotational speed of the camshaft in a four-stroke engine is half of the rotational speed of the crankshaft (in a two-stroke engine, the rotational speed of the camshaft is the same as the rotational speed of the crankshaft), the camshaft is still usually high in rotational speed and is required to bear a large torque, so that the camshaft is required to be high in strength and support in design, and the camshaft is generally made of high-quality alloy steel or alloy steel. Because the valve motion law is related to the power and the running characteristics of an engine, the camshaft design occupies a very important position in the design process of the engine.
Most of the existing cam shafts are integrally formed, and the surface of the existing cam shaft is generally plated with a layer of compact oxide film by adopting a conventional heat treatment method. The oxide film has certain corrosion and abrasion resistance, but the wear resistance, the corrosion and the adhesion are not good, and the oxide film can be worn and fall off after long-term use, so that the durability of the camshaft is not enhanced, and the cost is increased excessively.
Therefore, a manufacturing process of a corrosion-resistant camshaft is urgently needed at present.
Disclosure of Invention
In view of the above, the technical problem to be solved by the present invention is to provide a manufacturing process of a corrosion-resistant camshaft, which comprises machining a camshaft shape, then performing dry electrostatic spraying on a corrosion-resistant coating, and sintering at a high temperature to increase adhesion and improve corrosion resistance of the camshaft surface, thereby avoiding the problems of easy corrosion and low durability of the conventional camshaft.
In order to solve the technical problem, the invention discloses a manufacturing process of a corrosion-resistant camshaft, which comprises the following steps:
step a, providing a shaft-shaped blank of nodular cast iron, sending the shaft-shaped blank into a machining center, and grinding a shaft neck by adopting a grinding wheel at a linear speed of 60 m/s; milling an end face, and drilling a central hole;
b, turning a shaft neck and opening a gear;
c, milling the cam profile of the camshaft and deburring;
d, medium-frequency quenching, wherein the quenching frequency is 1000-10000Hz, and tempering at the low temperature of 140-250 ℃ after quenching;
e, spraying a corrosion-resistant coating by adopting a dry electrostatic spraying process, wherein the corrosion-resistant coating comprises 25-66 parts of methacrylate, 12-23 parts of ethylene glycol monoethyl ether acetate, 7-16 parts of phenoxy propyl acrylate, 5-11 parts of dibutyl maleate, 10-15 parts of diamond powder, 8-15 parts of feldspar powder, 5-7 parts of potassium nitrate, 5-7 parts of sodium fluosilicate, 11-17 parts of zinc oxide powder, 4-6 parts of titanium dioxide and 7-9 parts of sodium carbonate;
f, high-temperature sintering, wherein the sintering temperature is 790-820 ℃, the sintering time is 3-6min, and then the obtained product is naturally cooled to the room temperature;
and g, fine grinding and polishing the shaft neck and cleaning.
According to an embodiment of the present invention, the corrosion-resistant coating in step e includes 42 parts of methacrylate, 19 parts of ethylene glycol monoethyl ether acetate, 13 parts of phenoxy propyl acrylate, 8 parts of dibutyl maleate, 13 parts of diamond powder, 12 parts of feldspar powder, 6 parts of potassium nitrate, 6 parts of sodium fluosilicate, 14 parts of zinc oxide powder, 5 parts of titanium dioxide, and 8 parts of sodium carbonate.
According to an embodiment of the present invention, the corrosion-resistant coating in step e includes 25 parts of methacrylate, 12 parts of ethylene glycol monoethyl ether acetate, 7 parts of phenoxy propyl acrylate, 5 parts of dibutyl maleate, 10 parts of diamond powder, 8 parts of feldspar powder, 5 parts of potassium nitrate, 5 parts of sodium fluosilicate, 11 parts of zinc oxide powder, 4 parts of titanium dioxide, and 7 parts of sodium carbonate.
According to an embodiment of the present invention, the corrosion-resistant coating in step e includes 66 parts of methacrylate, 23 parts of ethylene glycol monoethyl ether acetate, 16 parts of phenoxy propyl acrylate, 11 parts of dibutyl maleate, 15 parts of diamond powder, 15 parts of feldspar powder, 7 parts of potassium nitrate, 7 parts of sodium fluosilicate, 17 parts of zinc oxide powder, 6 parts of titanium dioxide, and 9 parts of sodium carbonate.
According to an embodiment of the present invention, after the corrosion-resistant coating methacrylate, ethylene glycol ethyl ether acetate, phenoxy propyl acrylate, and dibutyl maleate in step e are mixed in a thermal reaction kettle for 30min, diamond powder, feldspar powder, potassium nitrate, sodium fluosilicate, zinc oxide powder, titanium dioxide, and sodium carbonate are introduced after wet ball milling.
According to an embodiment of the present invention, the quenching frequency in the step d is 7000Hz.
According to an embodiment of the present invention, after the step d, a straightening device is used for straightening.
According to an embodiment of the present invention, the step g further includes a flaw detection operation.
Compared with the prior art, the invention can obtain the following technical effects:
the shape of the camshaft is machined, then the corrosion-resistant coating is electrostatically sprayed by a dry method, and the camshaft is sintered at high temperature, so that the adhesiveness is increased, the corrosion resistance of the surface of the camshaft is improved, and the troubles that the camshaft is easy to corrode and has low durability in the past are avoided.
Of course, it is not necessary for any one product in which the invention is practiced to achieve all of the above-described technical effects simultaneously.
Detailed Description
The following embodiments are described in detail with reference to the accompanying drawings, so that the implementation process of the present invention for solving the technical problems and achieving the technical effects by applying technical means can be fully understood and implemented.
A process for manufacturing a corrosion resistant camshaft comprising:
step a, providing a shaft-shaped blank of nodular cast iron, sending the shaft-shaped blank into a machining center, and grinding a shaft neck by adopting a grinding wheel at a linear speed of 60 m/s; milling an end face, and drilling a central hole;
b, turning a shaft neck and opening a gear;
c, milling the cam profile of the camshaft and deburring;
d, intermediate frequency quenching, wherein the quenching frequency is 1000-10000Hz, and low-temperature tempering is carried out at 140-250 ℃ after quenching;
e, spraying a corrosion-resistant coating by adopting a dry electrostatic spraying process, wherein the corrosion-resistant coating comprises 25-66 parts of methacrylate, 12-23 parts of ethylene glycol monoethyl ether acetate, 7-16 parts of phenoxy propyl acrylate, 5-11 parts of dibutyl maleate, 10-15 parts of diamond powder, 8-15 parts of feldspar powder, 5-7 parts of potassium nitrate, 5-7 parts of sodium fluosilicate, 11-17 parts of zinc oxide powder, 4-6 parts of titanium dioxide and 7-9 parts of sodium carbonate;
f, high-temperature sintering, wherein the sintering temperature is 790-820 ℃, the sintering time is 3-6min, and then the mixture is naturally cooled to the room temperature;
and g, finely grinding and polishing the shaft neck, and cleaning.
The invention firstly carries out machining on the shaft-shaped blank of the nodular cast iron to form the shaft diameter and the cam with the specification and the size, and then carries out heat treatment to improve the hardness. And finally, the corrosion-resistant coating is sprayed by a dry-method electrostatic spraying process, so that the adhesiveness of the surface coating of the camshaft is improved, and the corrosion-resistant effect is improved.
Example 1.
Step a, providing a shaft-shaped blank of nodular cast iron, sending the shaft-shaped blank into a machining center, and grinding a shaft neck by adopting a grinding wheel at a linear speed of 60 m/s; milling an end face, and drilling a central hole;
b, turning a shaft neck and opening a gear;
c, milling the cam profile of the camshaft and deburring;
d, intermediate frequency quenching, wherein the quenching frequency is 1000-10000Hz, and low-temperature tempering is carried out at 140-250 ℃ after quenching;
e, spraying a corrosion-resistant coating by adopting a dry electrostatic spraying process, wherein the corrosion-resistant coating comprises 42 parts of methacrylate, 19 parts of ethylene glycol ethyl ether acetate, 13 parts of phenoxy propyl acrylate, 8 parts of dibutyl maleate, 13 parts of diamond powder, 12 parts of feldspar powder, 6 parts of potassium nitrate, 6 parts of sodium fluosilicate, 14 parts of zinc oxide powder, 5 parts of titanium dioxide and 8 parts of sodium carbonate;
f, high-temperature sintering, wherein the sintering temperature is 790-820 ℃, the sintering time is 3-6min, and then the mixture is naturally cooled to the room temperature;
and g, finely grinding and polishing the shaft neck, and cleaning.
In this example 1, a shaft-shaped blank of nodular cast iron was processed into journals and cams at both ends by a machining center in a predetermined size, and then subjected to heat treatment and intermediate frequency quenching to enhance the surface hardness and durability. And then preparing and coating the corrosion-resistant coating according to the proportion, wherein the corrosion-resistant coating is prepared by mixing methyl acrylate, ethylene glycol ethyl ether acetate, phenoxy propyl acrylate and dibutyl maleate in a thermal reaction kettle for 30min, and then introducing diamond powder, feldspar powder, potassium nitrate, sodium fluosilicate, zinc oxide powder, titanium dioxide and sodium carbonate which are subjected to wet ball milling. And spraying by adopting a dry electrostatic spraying process to realize the adhesion of the corrosion-resistant coating. The salt spray corrosion test shows that the corrosion-resistant coating in the weight portion has no bubbling, cracking, peeling and peeling, meets the 10-grade standard and has strong corrosion resistance.
Example 2.
Step a, providing a shaft-shaped blank of nodular cast iron, sending the shaft-shaped blank into a machining center, and grinding a shaft neck by adopting a grinding wheel at a linear speed of 60 m/s; milling end faces and drilling a central hole;
b, turning a shaft neck and opening a gear;
c, milling the cam profile of the camshaft and deburring;
d, intermediate frequency quenching, wherein the quenching frequency is 1000-10000Hz, and low-temperature tempering is carried out at 140-250 ℃ after quenching;
step e, spraying a corrosion-resistant coating by adopting a dry electrostatic spraying process, wherein the corrosion-resistant coating comprises 25 parts of methacrylate, 12 parts of ethylene glycol monoethyl ether acetate, 7 parts of phenoxy propyl acrylate, 5 parts of dibutyl maleate, 10 parts of diamond powder, 8 parts of feldspar powder, 5 parts of potassium nitrate, 5 parts of sodium fluosilicate, 11 parts of zinc oxide powder, 4 parts of titanium dioxide and 7 parts of sodium carbonate;
f, high-temperature sintering, wherein the sintering temperature is 790-820 ℃, the sintering time is 3-6min, and then the mixture is naturally cooled to the room temperature;
and g, finely grinding and polishing the shaft neck, and cleaning.
In this example 2, a shaft-shaped blank of nodular cast iron was processed into journals and cams at both ends by a machining center according to a predetermined size, and then subjected to heat treatment and intermediate frequency quenching to enhance the surface hardness and improve the durability. And then preparing and coating the corrosion-resistant coating according to the proportion, wherein the corrosion-resistant coating is prepared by mixing methyl acrylate, ethylene glycol ethyl ether acetate, phenoxy propyl acrylate and dibutyl maleate in a thermal reaction kettle for 30min, and then introducing diamond powder, feldspar powder, potassium nitrate, sodium fluosilicate, zinc oxide powder, titanium dioxide and sodium carbonate which are subjected to wet ball milling. And spraying by adopting a dry electrostatic spraying process to realize the adhesion of the corrosion-resistant coating. The salt spray corrosion test shows that the corrosion-resistant coating in parts by weight has slight bubbling, cracking, falling and stripping, meets the 9-grade standard and has strong corrosion resistance.
Example 3.
Step a, providing a shaft-shaped blank of nodular cast iron, sending the shaft-shaped blank into a machining center, and grinding a shaft neck by adopting a grinding wheel at a linear speed of 60 m/s; milling end faces and drilling a central hole;
b, turning a shaft neck and opening a gear;
c, milling the cam profile of the camshaft and deburring;
d, intermediate frequency quenching, wherein the quenching frequency is 1000-10000Hz, and low-temperature tempering is carried out at 140-250 ℃ after quenching;
step e, spraying a corrosion-resistant coating by adopting a dry electrostatic spraying process, wherein the corrosion-resistant coating comprises 66 parts of methacrylate, 23 parts of ethylene glycol monoethyl ether acetate, 16 parts of phenoxy propyl acrylate, 11 parts of dibutyl maleate, 15 parts of diamond powder, 15 parts of feldspar powder, 7 parts of potassium nitrate, 7 parts of sodium fluosilicate, 17 parts of zinc oxide powder, 6 parts of titanium dioxide and 9 parts of sodium carbonate;
f, high-temperature sintering, wherein the sintering temperature is 790-820 ℃, the sintering time is 3-6min, and then the obtained product is naturally cooled to the room temperature;
and g, finely grinding and polishing the shaft neck, and cleaning.
In this example 3, a shaft-shaped blank of nodular cast iron was processed into journals and cams at both ends by a machining center in a predetermined size, and then subjected to heat treatment and intermediate frequency quenching to enhance the surface hardness and improve the durability. And then preparing and coating the corrosion-resistant coating according to the proportion, wherein the corrosion-resistant coating is prepared by mixing methyl acrylate, ethylene glycol ethyl ether acetate, phenoxy propyl acrylate and dibutyl maleate in a thermal reaction kettle for 30min, and then introducing diamond powder, feldspar powder, potassium nitrate, sodium fluosilicate, zinc oxide powder, titanium dioxide and sodium carbonate which are subjected to wet ball milling. And spraying by adopting a dry electrostatic spraying process to realize the adhesion of the corrosion-resistant coating. The salt spray corrosion test shows that the corrosion-resistant coating in parts by weight has slight bubbling, cracking and slight peeling, meets the 9-grade standard and has strong corrosion resistance.
In conclusion, in example 1, the corrosion-resistant coating in this weight part has the strongest corrosion resistance and the best durability of the camshaft after being sprayed.
Further, the quenching frequency in the step d is 7000Hz, and the hardness of the camshaft is improved by medium-frequency quenching. In addition, straightening equipment is adopted for straightening after the step d, and coaxiality is guaranteed. And g, carrying out flaw detection operation after the step g, and finishing detection before finished products are put into storage.
In conclusion, the camshaft is machined into the shape of the camshaft, then the corrosion-resistant coating is electrostatically sprayed by the dry method and is sintered at high temperature, so that the adhesion is increased, the corrosion resistance of the surface of the camshaft is improved, and the troubles that the camshaft is easy to corrode and has low durability in the prior art are avoided.
The foregoing description shows and describes several preferred embodiments of the invention, but as aforementioned, it is to be understood that the invention is not limited to the forms disclosed herein, and is not to be construed as excluding other embodiments, and that the invention is capable of use in various other combinations, modifications, and environments and is capable of changes within the scope of the inventive concept as expressed herein, commensurate with the above teachings, or the skill or knowledge of the relevant art. And that modifications and variations may be effected by those skilled in the art without departing from the spirit and scope of the invention as defined by the appended claims.
Claims (8)
1. A process for manufacturing a corrosion-resistant camshaft, comprising:
step a, providing a shaft-shaped blank of nodular cast iron, sending the shaft-shaped blank into a machining center, and grinding a shaft neck by adopting a grinding wheel at a linear speed of 60 m/s; milling an end face, and drilling a central hole;
b, turning a shaft neck and opening a gear;
c, milling the cam profile of the camshaft and deburring;
d, medium-frequency quenching, wherein the quenching frequency is 1000-10000Hz, and tempering at the low temperature of 140-250 ℃ after quenching;
e, spraying a corrosion-resistant coating by adopting a dry electrostatic spraying process, wherein the corrosion-resistant coating comprises 25-66 parts of methacrylate, 12-23 parts of ethylene glycol monoethyl ether acetate, 7-16 parts of phenoxy propyl acrylate, 5-11 parts of dibutyl maleate, 10-15 parts of diamond powder, 8-15 parts of feldspar powder, 5-7 parts of potassium nitrate, 5-7 parts of sodium fluosilicate, 11-17 parts of zinc oxide powder, 4-6 parts of titanium dioxide and 7-9 parts of sodium carbonate;
f, high-temperature sintering, wherein the sintering temperature is 790-820 ℃, the sintering time is 3-6min, and then the mixture is naturally cooled to the room temperature;
and g, finely grinding and polishing the shaft neck, and cleaning.
2. The process for manufacturing the corrosion-resistant camshaft according to claim 1, wherein the corrosion-resistant coating in the step e comprises 42 parts of methacrylate, 19 parts of ethylene glycol monoethyl ether acetate, 13 parts of phenoxy propyl acrylate, 8 parts of dibutyl maleate, 13 parts of diamond powder, 12 parts of feldspar powder, 6 parts of potassium nitrate, 6 parts of sodium fluosilicate, 14 parts of zinc oxide powder, 5 parts of titanium dioxide and 8 parts of sodium carbonate.
3. The process for manufacturing the corrosion-resistant camshaft according to claim 1, wherein the corrosion-resistant coating in the step e comprises 25 parts of methacrylate, 12 parts of ethylene glycol monoethyl ether acetate, 7 parts of phenoxy propyl acrylate, 5 parts of dibutyl maleate, 10 parts of diamond powder, 8 parts of feldspar powder, 5 parts of potassium nitrate, 5 parts of sodium fluosilicate, 11 parts of zinc oxide powder, 4 parts of titanium dioxide and 7 parts of sodium carbonate.
4. The process for manufacturing the corrosion-resistant camshaft according to claim 1, wherein the corrosion-resistant coating in the step e comprises 66 parts of methacrylate, 23 parts of ethylene glycol monoethyl ether acetate, 16 parts of phenoxy propyl acrylate, 11 parts of dibutyl maleate, 15 parts of diamond powder, 15 parts of feldspar powder, 7 parts of potassium nitrate, 7 parts of sodium fluosilicate, 17 parts of zinc oxide powder, 6 parts of titanium dioxide and 9 parts of sodium carbonate.
5. The process for preparing a corrosion-resistant camshaft according to claim 1, wherein in the step e, after the corrosion-resistant coating methacrylate, the ethylene glycol monoethyl ether acetate, the phenoxy propyl acrylate and the dibutyl maleate are mixed in the thermal reaction kettle for 30min, diamond powder, feldspar powder, potassium nitrate, sodium fluosilicate, zinc oxide powder, titanium dioxide and sodium carbonate which are subjected to wet ball milling are introduced.
6. The process of claim 1, wherein the quenching frequency in step d is 7000Hz.
7. The process of claim 1, wherein said straightening step d is followed by straightening with a straightening device.
8. The process of claim 1, further comprising a flaw detection operation after step g.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211588349.2A CN115740988A (en) | 2022-12-12 | 2022-12-12 | Manufacturing process of corrosion-resistant camshaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211588349.2A CN115740988A (en) | 2022-12-12 | 2022-12-12 | Manufacturing process of corrosion-resistant camshaft |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115740988A true CN115740988A (en) | 2023-03-07 |
Family
ID=85345393
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211588349.2A Withdrawn CN115740988A (en) | 2022-12-12 | 2022-12-12 | Manufacturing process of corrosion-resistant camshaft |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115740988A (en) |
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2022
- 2022-12-12 CN CN202211588349.2A patent/CN115740988A/en not_active Withdrawn
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Application publication date: 20230307 |