CN115945450A - Surface treatment method for engine cylinder cover - Google Patents
Surface treatment method for engine cylinder cover Download PDFInfo
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- CN115945450A CN115945450A CN202310018405.7A CN202310018405A CN115945450A CN 115945450 A CN115945450 A CN 115945450A CN 202310018405 A CN202310018405 A CN 202310018405A CN 115945450 A CN115945450 A CN 115945450A
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- cylinder cover
- soaking
- cylinder head
- soaking pool
- polishing
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- 238000000034 method Methods 0.000 title claims abstract description 28
- 238000004381 surface treatment Methods 0.000 title claims abstract description 14
- 238000002791 soaking Methods 0.000 claims abstract description 70
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 238000005498 polishing Methods 0.000 claims description 46
- 239000000243 solution Substances 0.000 claims description 33
- 238000004140 cleaning Methods 0.000 claims description 29
- 238000002347 injection Methods 0.000 claims description 21
- 239000007924 injection Substances 0.000 claims description 21
- 238000002156 mixing Methods 0.000 claims description 20
- 238000005507 spraying Methods 0.000 claims description 19
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 18
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 18
- 230000001680 brushing effect Effects 0.000 claims description 17
- 239000000463 material Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 10
- 239000003112 inhibitor Substances 0.000 claims description 10
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 9
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 9
- 238000001816 cooling Methods 0.000 claims description 9
- 230000007797 corrosion Effects 0.000 claims description 9
- 238000005260 corrosion Methods 0.000 claims description 9
- 229910052751 metal Inorganic materials 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 9
- 229910017604 nitric acid Inorganic materials 0.000 claims description 9
- 238000011049 filling Methods 0.000 claims description 7
- 239000003513 alkali Substances 0.000 claims description 6
- 150000001875 compounds Chemical class 0.000 claims description 6
- 238000007599 discharging Methods 0.000 claims description 6
- 239000003792 electrolyte Substances 0.000 claims description 6
- 150000007524 organic acids Chemical class 0.000 claims description 6
- 230000001681 protective effect Effects 0.000 claims description 6
- 239000000654 additive Substances 0.000 claims description 5
- 230000000996 additive effect Effects 0.000 claims description 5
- KCXVZYZYPLLWCC-UHFFFAOYSA-N EDTA Chemical compound OC(=O)CN(CC(O)=O)CCN(CC(O)=O)CC(O)=O KCXVZYZYPLLWCC-UHFFFAOYSA-N 0.000 claims description 4
- 238000010438 heat treatment Methods 0.000 claims description 4
- 239000010410 layer Substances 0.000 claims description 4
- 239000002994 raw material Substances 0.000 claims description 4
- 239000010865 sewage Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 239000004745 nonwoven fabric Substances 0.000 claims description 3
- 239000011241 protective layer Substances 0.000 claims description 3
- 230000035484 reaction time Effects 0.000 claims description 2
- 238000005406 washing Methods 0.000 claims description 2
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims 1
- 238000005536 corrosion prevention Methods 0.000 claims 1
- 230000002421 anti-septic effect Effects 0.000 description 3
- 239000011224 oxide ceramic Substances 0.000 description 3
- 229910052574 oxide ceramic Inorganic materials 0.000 description 3
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 230000001804 emulsifying effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 239000002341 toxic gas Substances 0.000 description 1
Landscapes
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention provides a surface treatment method for an engine cylinder cover. Provides a cylinder head surface treatment method for soaking and vibrating the cylinder head to soften stains. A surface treatment method for an engine cylinder head comprises the following steps of soaking for the first time: the engine cylinder cover is arranged in the soaking pool, 50L-1500L of water is contained in the soaking pool, the water temperature in the soaking pool is controlled to be-20 ℃ to 50 ℃, the soaking time is 15min to 60min, and the engine cylinder cover is vibrated by the vibrator in the soaking process. When the engine cylinder cover is placed in the soaking pool, the engine cylinder cover is vibrated by the vibrator, and oil stains and stains on the engine cylinder cover are softened by soaking so as to be convenient for removing the stains on the engine cylinder cover.
Description
Technical Field
The invention relates to the technical field of cylinder covers, in particular to a surface treatment method for an engine cylinder cover.
Background
The engine cylinder cover belongs to mechanical parts of an automobile engine part, and aiming at the surface treatment of the engine cylinder cover, the dirt of the engine cylinder cover is generally required to be cleaned, and then the performance of the engine cylinder cover is improved.
The prior art generally treats the surface of the cylinder head of the engine by the following steps: the method comprises the steps of cleaning oil stains on the cylinder cover, polishing the cylinder cover, soaking and drying again, wherein the oil stains are difficult to clean when the cylinder cover is subjected to oil stain treatment, so that the oil stains and the stains are difficult to clean when the oil stains and the stains are removed.
Disclosure of Invention
In order to overcome the defect of high difficulty in oil stain treatment in the prior art, the technical problem to be solved is as follows: provides a cylinder head surface treatment method for soaking and vibrating the cylinder head to soften stains.
A surface treatment method for an engine cylinder head comprises the following steps:
s1, soaking for the first time: installing a vibrator in the soaking pool, placing the engine cylinder cover in the soaking pool, wherein 50L-1500L of water is contained in the soaking pool, the water temperature in the soaking pool is controlled to be-20-50 ℃, the soaking time is 15-60min, and the engine cylinder cover is vibrated by the vibrator in the soaking process;
s2, oil stain treatment: discharging water in the soaking pool in the step S1, washing stains in the soaking pool, uniformly spraying a cleaning solution onto the cylinder cover in a spraying mode, standing for 10-30 minutes, and brushing off oil stains on the cylinder cover in a mechanical brushing mode to obtain the cylinder cover subjected to oil stain treatment;
s3, polishing treatment: fixing the cylinder cover by using a polishing ball, uniformly arranging at least 30 injection heads on the inner wall of the polishing ball, and spraying polishing liquid into the polishing ball by using a jet pump;
s4, soaking for the second time: placing the polished cylinder cover in the step S3 into a soaking pool, filling the soaking pool with water, vibrating the cylinder cover by using a vibrator at the same time, soaking for 30-40min, and taking out the cylinder cover to wash the cylinder cover;
s5, drying: and (4) putting the cylinder cover into a dryer for drying treatment for 30-60min to obtain the treated engine cylinder cover.
Further, the step S2 specifically includes the following steps:
s2-1, cleaning a soaking pool:
discharging the sewage left in the step S1, and cleaning up stains in the soaking pool;
s2-2, preparing a cleaning solution:
14 to 20 percent of N-bis-hydroxyethyl alkylamide, 8 to 12 percent of EDTA, 3.3 to 5.2 percent of AP type demulsifier and 30 to 60 percent of water are poured into a reactor, the heating temperature is between 20 and 60 ℃, the stirring speed is 310 r/min, the reaction time is between 10 and 20min, viscous liquid is obtained by reaction, and high-strength cleaning liquid is prepared,
s2-3, spraying cleaning solution:
uniformly spraying the high-strength cleaning solution prepared in the step S2-2 onto the cylinder cover in a high-pressure spraying manner, and standing for 10-30 minutes;
s2-4, mechanical brushing:
and (3) brushing the oil stain on the cylinder cover in a mechanical brushing mode for 20-30 minutes.
Further, in S3, a rotating clamp is arranged in the polishing ball, the cylinder cover is clamped by the rotating clamp, the cylinder cover is rotated for 360 degrees through the rotating clamp, the rotation speed is 10-80 circles/min, the injection speed of the injection pump is 34-42m/S, and the injection time is 42-53S.
Further, in S3, the manufacturing process of the polishing solution is as follows:
s3-1, preparing materials:
measuring 20-120mL of hydrochloric acid, 33-50mL of nitric acid, 60-100mL of phosphoric acid and 700-900mL of water
S3-2, mixing the raw materials:
pouring 20-120mL of hydrochloric acid, 33-50mL of nitric acid, 60-100mL of phosphoric acid and 700-900mL of water into a mixing machine, mixing for 10-15min, and raising the temperature to 20-30 ℃ to obtain a compound formed by organic acid and alkali;
s3-3, adding auxiliary materials:
adding 20mL of additive, 8mL of inhibitor and 10mL of corrosion inhibitor, uniformly mixing, adding an auxiliary material every 3min, and mixing for 10-15min to obtain the environment-friendly metal polishing solution, wherein the pH value of the metal polishing solution is 8-10, and the corrosion to the cylinder cover is small.
Further, in step S5, before the cylinder head is placed in the dryer, the cylinder head is wiped clean by using a wiper, and the wiping part of the wiper is made of non-woven fabric.
Further, the method also comprises S6 and antiseptic treatment:
s6-1, pouring 500ml-3000ml of electrolyte into an electrolytic tank, and filling 2/3 space of the electrolytic tank;
s6-2, fixing the cylinder cover in the electrolytic tank, immersing the cylinder cover in the electrolyte, and connecting the anode and the cathode;
s6-3, switching on a power supply of the electrolytic cell, controlling the voltage to be 70-100V, adjusting the electrolytic temperature to be 80-300 ℃ from 20-120 ℃, and electrolyzing for 2-3.6 hours to form a protective film on the surface of the cylinder cover, wherein the protective film can form a protective layer on the cylinder cover;
further, the protective film in S6 is an aluminum oxide ceramic layer with the thickness of 10-33 microns.
And further, placing the cylinder cover subjected to the antiseptic treatment in the step S6 into a cooling pool for cooling at the temperature of minus 60-10 ℃ for 50-90min, taking out the cylinder cover after cooling, and drying again.
The invention has the following advantages: 1. when the engine cylinder cover is placed in the soaking pool, the engine cylinder cover is vibrated by the vibrator, and oil stains and stains on the engine cylinder cover are softened by soaking so as to be convenient for removing the stains on the engine cylinder cover;
2. the cylinder cover can be automatically polished by adopting a mode of automatically rotating the cylinder cover and spraying polishing solution at high pressure;
3. when the polishing solution is developed, inorganic strong acid (hydrochloric acid, nitric acid and phosphoric acid) is used as a main material, and auxiliary materials (an additive, an inhibitor and a corrosion inhibitor) are added to the main material and mixed to develop the environment-friendly metal polishing solution, so that the generation of toxic gas is effectively reduced in the polishing process.
Detailed Description
The present invention will be further described with reference to specific examples, which are illustrative of the invention and are not to be construed as limiting the invention.
Example 1
A surface treatment method for an engine cylinder head comprises the following steps:
s1, soaking for the first time: a vibrator is arranged in the soaking pool, the engine cylinder cover is placed in the soaking pool, 50L-1500L of water is contained in the soaking pool, the water temperature in the soaking pool is controlled to be-20-50 ℃, the soaking time is 15-60min, the vibrator is used for vibrating the engine cylinder cover in the soaking process, so that stains on the engine cylinder cover can be vibrated, and oil stains and other stains on the engine cylinder cover can be softened by soaking;
s2, oil stain treatment:
s2-1, cleaning a soaking pool:
discharging the sewage left in the step S1, and cleaning up stains in the soaking pool;
s2-2, preparing a cleaning solution:
pouring 15% of N-bis-hydroxyethyl alkylamide, 9% of EDTA, 4% of AP type demulsifier and 40% of water into a reactor, heating to 20-60 ℃, stirring at a speed of 310 r/min, and reacting for 10-20min to obtain viscous liquid, thereby preparing a high-strength cleaning solution;
s2-3, spraying cleaning solution:
uniformly spraying the high-strength cleaning solution prepared in the step S2-2 onto the cylinder cover in a high-pressure spraying manner, standing for 10-30 minutes, and emulsifying oil stains on the cylinder cover by using the high-strength cleaning solution, so that the oil stains can be conveniently brushed off in the later period;
s2-4, mechanical brushing:
and (3) brushing the oil stain on the cylinder cover in a mechanical brushing mode for 20-30 minutes.
S3, polishing treatment: the polishing method comprises the steps of fixing a cylinder cover by using a polishing ball, arranging a rotary fixture in the polishing ball, clamping the cylinder cover by using the rotary fixture, rotating the cylinder cover by 360 degrees by using the rotary fixture, wherein the rotation rate is 10-80 circles/min, the injection speed of an injection pump is 34-42m/s, the injection time is 42-53s, at least 30 injection heads are uniformly arranged on the inner wall of the polishing ball, polishing liquid is sprayed into the polishing ball by using the injection pump, and the cylinder cover can be uniformly polished under the matching of pressure injection and rotation of the cylinder cover, so that the polishing efficiency is improved.
The preparation process of the polishing solution comprises the following steps:
s3-1, preparing materials: measuring 20-120mL of hydrochloric acid, 33-50mL of nitric acid, 60-100mL of phosphoric acid and 700-900mL of water
S3-2, mixing the raw materials: pouring 20-120mL of hydrochloric acid, 33-50mL of nitric acid, 60-100mL of phosphoric acid and 700-900mL of water into a mixing machine, mixing for 10-15min, raising the temperature to 20-30 ℃ to obtain a compound formed by organic acid and alkali, wherein the compound formed by the organic acid and alkali can achieve a good polishing effect;
s3-3, adding auxiliary materials: adding 20mL of additive, 8mL of inhibitor and 10mL of corrosion inhibitor, uniformly mixing, adding an auxiliary material every 3min, and mixing for 10-15min to obtain the environment-friendly metal polishing solution, wherein the pH value of the metal polishing solution is 8-10, and the corrosion to the cylinder cover is small.
S4, soaking for the second time: placing the polished cylinder cover in the step S3 into a soaking pool, filling the soaking pool with water, vibrating the cylinder cover by using a vibrator at the same time, soaking for 30-40min, and taking out the cylinder cover to wash the cylinder cover;
example 2
On the basis of embodiment 1, an engine cylinder head surface treatment method comprises the following steps:
s1, soaking for the first time: a vibrator is arranged in the soaking pool, the engine cylinder cover is placed in the soaking pool, 50L-1500L of water is contained in the soaking pool, the water temperature in the soaking pool is controlled to be-20-50 ℃, the soaking time is 15-60min, the vibrator is used for vibrating the engine cylinder cover in the soaking process, so that stains on the engine cylinder cover can be vibrated, and oil stains and other stains on the engine cylinder cover can be softened by soaking;
s2, oil stain treatment:
s2-1, cleaning a soaking pool:
discharging the sewage left in the step S1, and cleaning up stains in the soaking pool;
s2-2, preparing a cleaning solution:
pouring 20% of N-bis-hydroxyethyl alkylamide, 10% of EDTA, 5% of AP type demulsifier and 50% of water into a reactor, heating to 20-60 ℃, stirring at a speed of 310 r/min for 10-20min, and reacting to obtain viscous liquid to obtain a high-strength cleaning solution;
s2-3, spraying cleaning solution:
uniformly spraying the high-strength cleaning solution prepared in the step S2-2 onto the cylinder cover in a high-pressure spraying manner, standing for 10-30 minutes, emulsifying oil stains on the cylinder cover by the high-strength cleaning solution, and conveniently brushing the oil stains at a later stage;
s2-4, mechanical brushing:
and (3) brushing the oil stain on the cylinder cover in a mechanical brushing mode for 20-30 minutes.
S3, polishing treatment: the polishing method comprises the steps of fixing a cylinder cover by using a polishing ball, arranging a rotary fixture in the polishing ball, clamping the cylinder cover by using the rotary fixture, rotating the cylinder cover by 360 degrees by using the rotary fixture, wherein the rotation rate is 10-80 circles/min, the injection speed of an injection pump is 34-42m/s, the injection time is 42-53s, at least 30 injection heads are uniformly arranged on the inner wall of the polishing ball, polishing liquid is sprayed into the polishing ball by using the injection pump, and the cylinder cover can be uniformly polished under the matching of pressure injection and rotation of the cylinder cover, so that the polishing efficiency is improved.
The preparation process of the polishing solution comprises the following steps:
s3-1, preparing materials: measuring 20-120mL of hydrochloric acid, 33-50mL of nitric acid, 60-100mL of phosphoric acid and 700-900mL of water
S3-2, mixing the raw materials: pouring 20-120mL of hydrochloric acid, 33-50mL of nitric acid, 60-100mL of phosphoric acid and 700-900mL of water into a mixing machine, mixing for 10-15min, raising the temperature to 20-30 ℃ to obtain a compound formed by organic acid and alkali, wherein the compound formed by the organic acid and alkali can achieve a good polishing effect;
s3-3, adding auxiliary materials: adding 20mL of additive, 8mL of inhibitor and 10mL of corrosion inhibitor, uniformly mixing, adding an auxiliary material every 3min, and mixing for 10-15min to obtain the environment-friendly metal polishing solution, wherein the pH value of the metal polishing solution is 8-10, and the corrosion to the cylinder cover is small.
S4, soaking for the second time: placing the polished cylinder cover in the step S3 into a soaking pool, filling the soaking pool with water, vibrating the cylinder cover by using a vibrator at the same time, soaking for 30-40min, and taking out the cylinder cover to wash the cylinder cover;
s5, drying: wiping the cylinder cover by using a wiping machine, wherein the wiping part of the wiping machine is made of non-woven fabric, and drying the cylinder cover in a dryer for 30-60min to obtain the treated cylinder cover of the engine;
s6, antiseptic treatment:
s6-1, pouring 500ml-3000ml of electrolyte into an electrolytic tank, and filling 2/3 of the space of the electrolytic tank;
s6-2, fixing the cylinder cover in the electrolytic tank, immersing the cylinder cover in the electrolyte, and connecting the anode and the cathode;
s6-3, switching on a power supply of the electrolytic cell, controlling the voltage to be 70-100V, adjusting the electrolytic temperature to be 80-300 ℃ from 20-120 ℃, and electrolyzing for 2-3.6 hours to form an aluminum oxide ceramic layer with the thickness of 10-33 micrometers on the surface of the cylinder cover, wherein the aluminum oxide ceramic layer can form a protective layer on the cylinder cover to prevent the cylinder cover from being corroded, placing the cylinder cover subjected to anticorrosion treatment in a cooling tank for cooling at the temperature of-60-10 ℃ for 50-90min, taking out the cylinder cover after cooling, and drying again.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still make modifications to the technical solutions described in the foregoing embodiments, or make equivalent substitutions and improvements to part of the technical features of the foregoing embodiments, and any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A surface treatment method for an engine cylinder head is characterized by comprising the following steps:
s1, soaking for the first time: installing a vibrator in the soaking pool, placing the engine cylinder cover in the soaking pool, wherein 50L-1500L of water is contained in the soaking pool, the water temperature in the soaking pool is controlled to be-20-50 ℃, the soaking time is 15-60min, and the engine cylinder cover is vibrated by the vibrator in the soaking process;
s2, oil stain treatment: discharging the water in the soaking pool in the step S1, washing stains in the soaking pool completely, uniformly spraying a cleaning solution on the cylinder cover in a spraying mode, standing for 10-30 minutes, and brushing off oil stains on the cylinder cover in a mechanical brushing mode to obtain the cylinder cover subjected to oil stain treatment;
s3, polishing treatment: fixing the cylinder cover by using a polishing ball, uniformly arranging at least 30 injection heads on the inner wall of the polishing ball, and spraying polishing liquid into the polishing ball by using an injection pump;
s4, soaking for the second time: placing the polished cylinder cover in the step S3 into a soaking pool, filling the soaking pool with water, vibrating the cylinder cover by using a vibrator for 30-40min, and taking out the cylinder cover to wash out;
s5, drying: and (4) putting the cylinder cover into a dryer for drying treatment for 30-60min to obtain the treated engine cylinder cover.
2. The method for treating the surface of the cylinder head of the engine according to claim 1, wherein the step S2 comprises the steps of:
s2-1, cleaning a soaking pool:
discharging the sewage left in the step S1, and cleaning up stains in the soaking pool;
s2-2, preparing a cleaning solution:
14 to 20 percent of N-bis-hydroxyethyl alkylamide, 8 to 12 percent of EDTA, 3.3 to 5.2 percent of AP type demulsifier and 30 to 60 percent of water are poured into a reactor, the heating temperature is 20 to 60 ℃, the stirring speed is 310 r/min, the reaction time is 10 to 20min, viscous liquid is reacted to prepare high-strength cleaning liquid,
s2-3, spraying cleaning solution:
uniformly spraying the high-strength cleaning solution prepared in the step S2-2 onto the cylinder cover in a high-pressure spraying manner, and standing for 10-30 minutes;
s2-4, mechanical brushing:
and (3) brushing the oil stain on the cylinder cover in a mechanical brushing mode for 20-30 minutes.
3. A method for treating a surface of a cylinder head of an engine according to claim 1, wherein in S3, a rotary jig is provided in the polishing ball, the cylinder head is clamped by the rotary jig, the cylinder head is rotated by 360 degrees by the rotary jig at a rotation rate of 10 to 80 revolutions/min, and the injection pump has an injection speed of 34 to 42m/S and an injection time of 42 to 53S.
4. The method for treating the surface of the cylinder head of the engine according to claim 1, wherein in S3, the polishing liquid is prepared by the following process:
s3-1, preparing materials:
measuring 20-120mL of hydrochloric acid, 33-50mL of nitric acid, 60-100mL of phosphoric acid and 700-900mL of water
S3-2, mixing the raw materials:
pouring 20-120mL of hydrochloric acid, 33-50mL of nitric acid, 60-100mL of phosphoric acid and 700-900mL of water into a mixing machine, mixing for 10-15min, and raising the temperature to 20-30 ℃ to obtain a compound formed by organic acid and alkali;
s3-3, adding auxiliary materials:
adding 20mL of additive, 8mL of inhibitor and 10mL of corrosion inhibitor, uniformly mixing, adding an auxiliary material every 3min, and mixing for 10-15min to obtain the environment-friendly metal polishing solution, wherein the pH value of the metal polishing solution is 8-10, and the corrosion to the cylinder cover is small.
5. The method of claim 1, wherein in step S5, before the cylinder head is placed in the dryer, the cylinder head is wiped clean by a wiper, and a wiping portion of the wiper is made of a nonwoven fabric.
6. The surface treatment method of the cylinder head of the engine according to claim 5, further comprising S6, anticorrosive treatment:
s6-1, pouring 500ml-3000ml of electrolyte into an electrolytic tank, and filling 2/3 space of the electrolytic tank;
s6-2, fixing the cylinder cover in the electrolytic cell, immersing the cylinder cover in the electrolyte, and connecting the positive electrode with the anode;
s6-3, switching on a power supply of the electrolytic cell, controlling the voltage to be 70-100V, adjusting the electrolytic temperature to be 80-300 ℃ from 20-120 ℃, and electrolyzing for 2-3.6 hours to form a protective film on the surface of the cylinder cover, wherein the protective film can form a protective layer on the cylinder cover.
7. The surface treatment method for the cylinder head of an engine according to claim 6, wherein the protective film in S6 is an alumina ceramic layer having a thickness of 10 to 33 μm.
8. The method for treating the surface of the cylinder head of the engine according to claim 7, wherein the cylinder head after the corrosion prevention treatment in the step S6 is placed in a cooling tank for cooling at a temperature of-60 ℃ to 10 ℃ for 50 to 90min, and is taken out after cooling for drying again.
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| CN109097778A (en) * | 2018-08-22 | 2018-12-28 | 浙江工业大学 | Surface treatment liquid and surface processing device for 3D printing stainless steel part part |
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