CN112663069A - Method for improving surface printability of metal part of moped - Google Patents
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Abstract
The invention discloses a method for improving the surface printability of a metal part of a power-assisted bicycle, which belongs to the technical field of metal material treatment and comprises the following steps: (1) heating and ionizing; (2) flame treatment; (3) electron beam irradiation-laser shock wave coupling treatment; (4) and (4) carrying out cryogenic treatment. The metal parts treated by the method have the advantages that the viscosity of the ink, the glossiness of 60 degrees, the tinting strength and the rubbing fastness are all obviously improved, the adhesiveness of the ink is good, the surface printability of the moped is obviously improved when the ink is used for manufacturing the moped, and the quality of the moped is improved to a great extent.
Description
Technical Field
The invention belongs to the technical field of metal material treatment, and particularly relates to a method for improving the surface printability of a metal part of a power-assisted bicycle.
Background
The booster bicycle is a new type two-wheel vehicle, belonging to a kind of bicycle, and using battery as auxiliary power source, and equipped with motor, and possesses power auxiliary system, and can implement manpower riding and motor-assisted integrated new type transportation means. Metal parts are important components in the power-assisted bicycle, and are often required to be printed to improve the appearance of the power-assisted bicycle during processing, but in actual use, due to the properties of the metal parts, the metal parts have high chemical stability, are not easy to permeate and dissolve by ink solvents, have low bonding firmness with ink printing, and need to be subjected to surface treatment before printing. Today, there is little research on this.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a method for improving the surface printability of a metal part of a power-assisted bicycle, the viscosity, the 60-DEG glossiness, the tinting strength and the rubbing fastness of the ink of the metal part treated by the method are obviously improved, and the adhesion of the ink is good, namely when the method is used for manufacturing the power-assisted bicycle, the surface printability of the power-assisted bicycle is obviously improved, and the quality of the power-assisted bicycle is greatly improved.
In order to achieve the purpose, the invention provides the following technical scheme:
a method of improving the printability of a surface of a metal part of a power assisted bicycle, comprising the steps of:
(1) heating and ionizing treatment:
pouring the treatment liquid into an electrolytic bath, adjusting the pH value in the treatment liquid to 8.3-8.7 by using ammonia water, then immersing a metal part to be treated into the treatment liquid, switching on a power supply to carry out heating ionization treatment, filtering out the metal part after the treatment, washing the surface by using pure water for 3-5 times, and drying for later use;
(2) flame treatment:
putting the metal part subjected to the heating ionization treatment in the step (1) on flame for flame treatment for 2-3 min;
(3) electron beam irradiation-laser shock wave coupling treatment:
placing the metal part subjected to flame treatment in the step (2) in an electron beam irradiation box for electron beam irradiation-laser shock wave coupling treatment, and taking out for later use after the electron beam irradiation-laser shock wave coupling treatment is completed;
(4) cryogenic treatment:
and (4) firstly, placing the metal part subjected to the electron beam irradiation-laser shock wave coupling treatment in the step (3) in a microwave environment for treatment for 1-2 min, and then placing the metal part in liquid nitrogen for subzero treatment.
Further, the treating fluid in the step (1) comprises the following components in percentage by weight: 0.4-0.6% of potassium nitrate, 0.6-0.9% of monopotassium phosphate, 0.6-0.8% of ethylenediamine, 0.2-0.4% of artemisinin, 0.5-0.7% of tea polyphenol, 0.23-0.27% of alpha-bisabolol and the balance of pure water.
Further, the temperature in the treatment liquid is controlled to be 55-65 ℃, the voltage is 200-220V, the current is 6-8A, and the treatment time is 30-40 min during the heating ionization treatment in the step (1).
By adopting the technical scheme, the metal part to be treated is immersed in the treatment solution and then is subjected to heating and ionization treatment, potassium nitrate, potassium dihydrogen phosphate, ethylenediamine and ammonia water in the treatment solution can be dissolved in water to partially form cations and anions, balance between covalent bonds and secondary bonds in the metal part material is destroyed, surface wettability and adhesiveness of the metal part material are improved, the effect of artemisinin, tea polyphenol and alpha-bisabolol on the metal part is enhanced, and mildew resistance and antibacterial property of the metal part material are improved.
Further, the horizontal distance between the metal part and the flame outer flame during the flame treatment in the step (2) is 20-30 mm.
By adopting the technical scheme, the metal part is placed on flame outer flame for flame treatment, the flame contains free radicals in an excited state such as O, NO, OH, NH and the like, then surface oxidation is carried out according to a free radical mechanism, and some polar oxygen-containing groups are introduced to carry out chain scission reaction, so that the surface adhesion and wettability of the metal part are improved.
Further, the irradiation dose of the electron beam is controlled to be 5-9 MeV during the electron beam irradiation-laser shock wave coupling treatment in the step (3), the pulse width is controlled to be 30-40 ns during the laser shock wave treatment, and the laser shock power density is 0.3-0.4 GW/cm2The energy is 3-5J, and the treatment time is 4-6 min.
By adopting the technical scheme, the metal part is subjected to electron beam irradiation-laser shock wave coupling treatment, the surface of the metal part quickly absorbs the incident electron beam irradiation energy and the laser shock wave energy, a plasma region is formed on the surface of the metal part, and a certain amount of active free radicals are formed at the same time, so that the surface wettability and the ink adhesiveness of the metal part are further improved.
Further, the power of the microwave is controlled to be 300-400W during the microwave treatment in the step (4), and the time of the deep cooling treatment is 20-30 min.
By adopting the technical scheme, the metal part is placed in the microwave environment for treatment, so that the temperature of the metal part is raised, then the metal part is placed in liquid nitrogen for subzero treatment, and the metal part is immediately placed in the subzero environment from high temperature, and is rapidly cooled, so that great temperature difference can be generated inside and outside the metal part, internal stress is generated, the surface hardness of the metal part is improved, and the surface performance of the metal part is improved.
Compared with the prior art, the invention has the following advantages:
the metal parts treated by the method have the advantages that the viscosity of the ink, the glossiness of 60 degrees, the tinting strength and the rubbing fastness are all obviously improved, the adhesiveness of the ink is good, the surface printability of the moped is obviously improved when the ink is used for manufacturing the moped, and the quality of the moped is improved to a great extent.
Detailed Description
A method of improving the printability of a surface of a metal part of a power assisted bicycle, comprising the steps of:
(1) heating and ionizing treatment:
pouring the treatment liquid into an electrolytic bath, adjusting the pH value in the treatment liquid to 8.3-8.7 by using ammonia water, then immersing a metal part to be treated into the treatment liquid, switching on a power supply to carry out heating ionization treatment, controlling the temperature in the treatment liquid to be 55-65 ℃, the voltage to be 200-220V, the current to be 6-8A, and the treatment time to be 30-40 min, filtering out the metal part after the treatment is finished, washing the surface by using pure water for 3-5 times, and drying for later use; wherein the treating fluid comprises the following components in percentage by weight: 0.4-0.6% of potassium nitrate, 0.6-0.9% of monopotassium phosphate, 0.6-0.8% of ethylenediamine, 0.2-0.4% of artemisinin, 0.5-0.7% of tea polyphenol, 0.23-0.27% of alpha-bisabolol and the balance of pure water;
(2) flame treatment:
putting the metal part subjected to the heating ionization treatment in the step (1) on flame for flame treatment for 2-3 min, wherein the horizontal distance between the metal part and the flame is 20-30 mm during the flame treatment;
(3) electron beam irradiation-laser shock wave coupling treatment:
placing the metal part subjected to flame treatment in the step (2) in an electron beam irradiation box for electron beam irradiation-laser shock wave coupling treatment, controlling the irradiation dose of an electron beam to be 5-9 MeV, controlling the pulse width to be 30-40 ns during laser shock wave treatment, and controlling the laser shock power density to be 0.3-0.4 GW/cm2The energy is 3-5J, the treatment time is 4-6 min, and the material is taken out for standby after completion;
(4) cryogenic treatment:
and (3) firstly, placing the metal part subjected to electron beam irradiation-laser shock wave coupling treatment in the step (3) in a microwave environment for treatment for 1-2 min, controlling the power of microwaves to be 300-400W during microwave treatment, and then immediately placing the metal part in liquid nitrogen for cryogenic treatment for 20-30 min.
For further explanation of the present invention, reference will now be made to the following specific examples.
Example 1
A method of improving the printability of a surface of a metal part of a power assisted bicycle, comprising the steps of:
(1) heating and ionizing treatment:
pouring the treatment solution into an electrolytic bath, adjusting the pH value of the treatment solution to 8.3 by using ammonia water, then immersing a metal part to be treated into the treatment solution, switching on a power supply to carry out heating ionization treatment, controlling the temperature in the treatment solution to be 55 ℃, the voltage to be 200V, the current to be 6A, the treatment time to be 30min, filtering out the metal part after the treatment is finished, washing the surface by using pure water for 3 times, and drying for later use; wherein the treating fluid comprises the following components in percentage by weight: potassium nitrate 0.4%, monopotassium phosphate 0.6%, ethylenediamine 0.6%, artemisinin 0.2%, tea polyphenol 0.5%, alpha-bisabolol 0.23%, and pure water in balance;
(2) flame treatment:
putting the metal part subjected to the heating ionization treatment in the step (1) on flame for flame treatment for 2min, wherein the horizontal distance between the metal part and the flame outside the flame during the flame treatment is 20 mm;
(3) electron beam irradiation-laser shock wave coupling treatment:
placing the metal part subjected to flame treatment in the step (2) in an electron beam irradiation box for electron beam irradiation-laser shock wave coupling treatment, controlling the irradiation dose of the electron beam to be 5MeV, controlling the pulse width to be 30ns during laser shock wave treatment, and controlling the laser shock power density to be 0.3GW/cm2The energy is 3J, the treatment time is 4min, and the material is taken out for standby after the treatment is finished;
(4) cryogenic treatment:
and (3) firstly, placing the metal part subjected to electron beam irradiation-laser shock wave coupling treatment in the step (3) in a microwave environment for treatment for 1.5min, controlling the power of microwaves to be 350W during microwave treatment, and then immediately placing the metal part in liquid nitrogen for subzero treatment for 25 min.
Example 2
A method of improving the printability of a surface of a metal part of a power assisted bicycle, comprising the steps of:
(1) heating and ionizing treatment:
pouring the treatment solution into an electrolytic bath, adjusting the pH value of the treatment solution to 8.5 by using ammonia water, then immersing a metal part to be treated into the treatment solution, switching on a power supply to carry out heating ionization treatment, controlling the temperature in the treatment solution to be 60 ℃, the voltage to be 210V, the current to be 7A, and the treatment time to be 35min, filtering out the metal part after the treatment is finished, washing the surface by using pure water for 4 times, and drying for later use; wherein the treating fluid comprises the following components in percentage by weight: potassium nitrate 0.5%, potassium dihydrogen phosphate 0.75%, ethylenediamine 0.75%, artemisinin 0.3%, tea polyphenols 0.6%, alpha-bisabolol 0.25%, and pure water in balance;
(2) flame treatment:
putting the metal part subjected to the heating ionization treatment in the step (1) on flame for flame treatment for 2.5min, wherein the horizontal distance between the metal part and the flame outside the flame during the flame treatment is 25 mm;
(3) electron beam irradiation-laser shock wave coupling treatment:
placing the metal part subjected to flame treatment in the step (2) in an electron beam irradiation box for electron beam irradiation-laser shock wave coupling treatment, controlling the irradiation dose of the electron beam to be 7MeV, controlling the pulse width to be 35ns during laser shock wave treatment, and controlling the laser shock power density to be 0.35GW/cm2The energy is 4J, the treatment time is 5min, and the material is taken out for standby after the treatment is finished;
(4) cryogenic treatment:
and (3) firstly, placing the metal part subjected to electron beam irradiation-laser shock wave coupling treatment in the step (3) in a microwave environment for treatment for 1.5min, controlling the power of microwaves to be 350W during microwave treatment, and then immediately placing the metal part in liquid nitrogen for subzero treatment for 25 min.
Example 3
A method of improving the printability of a surface of a metal part of a power assisted bicycle, comprising the steps of:
(1) heating and ionizing treatment:
pouring the treatment solution into an electrolytic bath, adjusting the pH value of the treatment solution to 8.7 by using ammonia water, then immersing a metal part to be treated into the treatment solution, switching on a power supply to carry out heating ionization treatment, controlling the temperature in the treatment solution to be 65 ℃, the voltage to be 220V, the current to be 8A, the treatment time to be 40min, filtering out the metal part after the treatment is finished, washing the surface by using pure water for 5 times, and drying for later use; wherein the treating fluid comprises the following components in percentage by weight: potassium nitrate 0.6%, potassium dihydrogen phosphate 0.9%, ethylenediamine 0.8%, artemisinin 0.4%, tea polyphenol 0.7%, alpha-bisabolol 0.27%, and pure water in balance;
(2) flame treatment:
putting the metal part subjected to the heating ionization treatment in the step (1) on flame for flame treatment for 3min, wherein the horizontal distance between the metal part and the flame is 30mm during the flame treatment;
(3) electron beam irradiation-laser shock wave coupling treatment:
placing the metal part subjected to flame treatment in the step (2) in an electron beam irradiation box for electron beam irradiation-laser shock wave coupling treatment, controlling the irradiation dose of the electron beam to be 9MeV, and performing laser shock wave treatmentThe pulse width is controlled to be 40ns, and the laser impact power density is controlled to be 0.4GW/cm2The energy is 5J, the treatment time is 6min, and the material is taken out for standby after the treatment is finished;
(4) cryogenic treatment:
and (3) firstly, placing the metal part subjected to electron beam irradiation-laser shock wave coupling treatment in the step (3) in a microwave environment for treatment for 2min, controlling the power of microwaves to be 400W during microwave treatment, and then immediately placing the metal part in liquid nitrogen for subzero treatment for 30 min.
Example 4
A method of improving the printability of a surface of a metal part of a power assisted bicycle, comprising the steps of:
(1) flame treatment:
placing the metal part to be treated on flame for flame treatment for 2.5min, wherein the horizontal distance between the metal part and the flame outside the flame during the flame treatment is 25 mm;
(2) electron beam irradiation-laser shock wave coupling treatment:
placing the metal part subjected to flame treatment in the step (1) in an electron beam irradiation box for electron beam irradiation-laser shock wave coupling treatment, controlling the irradiation dose of an electron beam to be 7MeV, controlling the pulse width to be 35ns during laser shock wave treatment, and controlling the laser shock power density to be 0.35GW/cm2The energy is 4J, the treatment time is 5min, and the material is taken out for standby after the treatment is finished;
(3) cryogenic treatment:
and (3) firstly, placing the metal part subjected to electron beam irradiation-laser shock wave coupling treatment in the step (2) in a microwave environment for treatment for 1.5min, controlling the power of microwaves to be 350W during microwave treatment, and then immediately placing the metal part in liquid nitrogen for subzero treatment for 25 min.
Example 5
A method of improving the printability of a surface of a metal part of a power assisted bicycle, comprising the steps of:
(1) heating and ionizing treatment:
pouring the treatment solution into an electrolytic bath, adjusting the pH value of the treatment solution to 8.5 by using ammonia water, then immersing a metal part to be treated into the treatment solution, switching on a power supply to carry out heating ionization treatment, controlling the temperature in the treatment solution to be 60 ℃, the voltage to be 210V, the current to be 7A, and the treatment time to be 35min, filtering out the metal part after the treatment is finished, washing the surface by using pure water for 4 times, and drying for later use; wherein the treating fluid comprises the following components in percentage by weight: potassium nitrate 0.5%, potassium dihydrogen phosphate 0.75%, ethylenediamine 0.75%, artemisinin 0.3%, tea polyphenols 0.6%, alpha-bisabolol 0.25%, and pure water in balance;
(2) electron beam irradiation-laser shock wave coupling treatment:
placing the metal part subjected to the heating ionization treatment in the step (1) in an electron beam irradiation box for electron beam irradiation-laser shock wave coupling treatment, controlling the irradiation dose of the electron beam to be 7MeV, controlling the pulse width to be 35ns during laser shock wave treatment, and controlling the laser shock power density to be 0.35GW/cm2The energy is 4J, the treatment time is 5min, and the material is taken out for standby after the treatment is finished;
(3) cryogenic treatment:
and (3) firstly, placing the metal part subjected to electron beam irradiation-laser shock wave coupling treatment in the step (2) in a microwave environment for treatment for 1.5min, controlling the power of microwaves to be 350W during microwave treatment, and then immediately placing the metal part in liquid nitrogen for subzero treatment for 25 min.
Example 6
A method of improving the printability of a surface of a metal part of a power assisted bicycle, comprising the steps of:
(1) heating and ionizing treatment:
pouring the treatment solution into an electrolytic bath, adjusting the pH value of the treatment solution to 8.5 by using ammonia water, then immersing a metal part to be treated into the treatment solution, switching on a power supply to carry out heating ionization treatment, controlling the temperature in the treatment solution to be 60 ℃, the voltage to be 210V, the current to be 7A, and the treatment time to be 35min, filtering out the metal part after the treatment is finished, washing the surface by using pure water for 4 times, and drying for later use; wherein the treating fluid comprises the following components in percentage by weight: potassium nitrate 0.5%, potassium dihydrogen phosphate 0.75%, ethylenediamine 0.75%, artemisinin 0.3%, tea polyphenols 0.6%, alpha-bisabolol 0.25%, and pure water in balance;
(2) flame treatment:
putting the metal part subjected to the heating ionization treatment in the step (1) on flame for flame treatment for 2.5min, wherein the horizontal distance between the metal part and the flame outside the flame during the flame treatment is 25 mm;
(3) cryogenic treatment:
and (3) firstly, placing the metal part subjected to flame treatment in the step (2) in a microwave environment for treatment for 1.5min, controlling the power of microwaves to be 350W during microwave treatment, and then placing the metal part in liquid nitrogen immediately for subzero treatment for 25 min.
Example 7
A method of improving the printability of a surface of a metal part of a power assisted bicycle, comprising the steps of:
(1) heating and ionizing treatment:
pouring the treatment solution into an electrolytic bath, adjusting the pH value of the treatment solution to 8.5 by using ammonia water, then immersing a metal part to be treated into the treatment solution, switching on a power supply to carry out heating ionization treatment, controlling the temperature in the treatment solution to be 60 ℃, the voltage to be 210V, the current to be 7A, and the treatment time to be 35min, filtering out the metal part after the treatment is finished, washing the surface by using pure water for 4 times, and drying for later use; wherein the treating fluid comprises the following components in percentage by weight: potassium nitrate 0.5%, potassium dihydrogen phosphate 0.75%, ethylenediamine 0.75%, artemisinin 0.3%, tea polyphenols 0.6%, alpha-bisabolol 0.25%, and pure water in balance;
(2) flame treatment:
putting the metal part subjected to the heating ionization treatment in the step (1) on flame for flame treatment for 2.5min, wherein the horizontal distance between the metal part and the flame outside the flame during the flame treatment is 25 mm;
(3) electron beam irradiation-laser shock wave coupling treatment:
placing the metal part subjected to flame treatment in the step (2) in an electron beam irradiation box for electron beam irradiation-laser shock wave coupling treatment, controlling the irradiation dose of the electron beam to be 7MeV, controlling the pulse width to be 35ns during laser shock wave treatment, and controlling the laser shock power density to be 0.35GW/cm2The energy is 4J, the treatment time is 5min, and the product can be taken out after the treatment is finished.
In order to compare the effects of the invention, the same batch of metal parts of the power-assisted bicycle with the same model and the same specification are selected as test objects, the selected objects are randomly divided into 6 groups with equal quality and quantity, wherein 5 groups of test groups and 1 group of blank control groups, then the metal parts of each group are correspondingly treated by the methods of the embodiment 2 and the embodiment 4-7 respectively, then the metal parts of each group (including the blank control groups) are printed on the surface in the same way, after the surface is finished, the performance test is carried out, each group of tests are simultaneously carried out 6 parallel tests, the average value of the test is taken as the final test result, and the specific test comparison data are shown in the following table 1:
TABLE 1
| Viscosity of the oil | Gloss of 60 DEG | Coloring power | Rubbing fastness under 180 ° (grade) | |
| Blank control group | 29.3 | 65.9 | 56.3 | 2 |
| Example 2 | 75.6 | 93.6 | 95.0 | 4 |
| Example 4 | 68.3 | 89.6 | 92.3 | 3 |
| Example 5 | 52.3 | 82.3 | 87.6 | 4 |
| Example 6 | 50.3 | 72.3 | 71.3 | 2 |
| Example 7 | 80.2 | 85.6 | 75.9 | 3 |
As can be seen from the above table 1, the viscosity of the ink, the glossiness of 60 degrees, the tinting strength and the rubbing fastness of the metal part treated by the method are all obviously improved, and the adhesiveness of the ink is good, namely, when the method is used for manufacturing the power-assisted bicycle, the surface printability of the power-assisted bicycle is obviously improved, and the quality of the power-assisted bicycle is greatly improved.
Claims (6)
1. A method of improving the printability of a surface of a metal part of a power assisted bicycle, comprising the steps of:
(1) heating and ionizing treatment:
pouring the treatment liquid into an electrolytic bath, adjusting the pH value in the treatment liquid to 8.3-8.7 by using ammonia water, then immersing a metal part to be treated into the treatment liquid, switching on a power supply to carry out heating ionization treatment, filtering out the metal part after the treatment, washing the surface by using pure water for 3-5 times, and drying for later use;
(2) flame treatment:
putting the metal part subjected to the heating ionization treatment in the step (1) on flame for flame treatment for 2-3 min;
(3) electron beam irradiation-laser shock wave coupling treatment:
placing the metal part subjected to flame treatment in the step (2) in an electron beam irradiation box for electron beam irradiation-laser shock wave coupling treatment, and taking out for later use after the electron beam irradiation-laser shock wave coupling treatment is completed;
(4) cryogenic treatment:
and (4) firstly, placing the metal part subjected to the electron beam irradiation-laser shock wave coupling treatment in the step (3) in a microwave environment for treatment for 1-2 min, and then placing the metal part in liquid nitrogen for subzero treatment.
2. The method for improving the printability of the surface of the metal part of the moped as claimed in claim 1, wherein the treating solution in the step (1) comprises the following components in percentage by weight: 0.4-0.6% of potassium nitrate, 0.6-0.9% of monopotassium phosphate, 0.6-0.8% of ethylenediamine, 0.2-0.4% of artemisinin, 0.5-0.7% of tea polyphenol, 0.23-0.27% of alpha-bisabolol and the balance of pure water.
3. The method for improving the printability of the surface of a metal part of a power-assisted bicycle according to claim 1, wherein the temperature in the treatment liquid during the thermal ionization treatment in the step (1) is controlled to be 55-65 ℃, the voltage is 200-220V, the current is 6-8A, and the treatment time is 30-40 min.
4. The method for improving the printability of the surface of a metal part of a moped according to claim 1, wherein the horizontal distance from the metal part to the flame outer flame during the flame treatment in the step (2) is 20-30 mm.
5. According to claim 1The method for improving the surface printability of the metal part of the moped is characterized in that the irradiation dose of the electron beam is controlled to be 5-9 MeV during the electron beam irradiation-laser shock wave coupling treatment in the step (3), the pulse width is controlled to be 30-40 ns during the laser shock wave treatment, and the laser shock power density is 0.3-0.4 GW/cm2The energy is 3-5J, and the treatment time is 4-6 min.
6. The method for improving the surface printability of the metal part of the moped according to claim 1, wherein the microwave treatment in the step (4) is performed by controlling the power of the microwave to be 300-400W and the time of the deep cooling treatment to be 20-30 min.
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| CN113881892A (en) * | 2021-09-10 | 2022-01-04 | 绩溪徽腾机械有限公司 | Preparation method of high-wear-resistance roller for chain |
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Application publication date: 20210416 |