CN110863210B - Surface treatment method for Audi C8 base structural member - Google Patents
Surface treatment method for Audi C8 base structural member Download PDFInfo
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- CN110863210B CN110863210B CN201911196610.2A CN201911196610A CN110863210B CN 110863210 B CN110863210 B CN 110863210B CN 201911196610 A CN201911196610 A CN 201911196610A CN 110863210 B CN110863210 B CN 110863210B
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/14—Cleaning or pickling metallic material with solutions or molten salts with alkaline solutions
- C23G1/19—Iron or steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/12—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration by sonic or ultrasonic vibrations
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C22/00—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C22/05—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions
- C23C22/06—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6
- C23C22/48—Chemical surface treatment of metallic material by reaction of the surface with a reactive liquid, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using aqueous solutions using aqueous acidic solutions with pH less than 6 not containing phosphates, hexavalent chromium compounds, fluorides or complex fluorides, molybdates, tungstates, vanadates or oxalates
- C23C22/50—Treatment of iron or alloys based thereon
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G5/00—Cleaning or de-greasing metallic material by other methods; Apparatus for cleaning or de-greasing metallic material with organic solvents
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
- Cleaning By Liquid Or Steam (AREA)
Abstract
The invention discloses a surface treatment method for an Audi C8 base structural member, which comprises the steps of framing the base structural member, and carrying out ultrasonic degreasing treatment and turning cleaning treatment on the base structural member in the frame; transferring the cleaned base structural part into a passivation tank and carrying out turning passivation treatment; carrying out turning, spraying and rinsing treatment on the passivated base structural part; carrying out vacuum drying treatment on the cleaned base structural part; the method has the advantages of good treatment effect, convenient operation and low energy consumption, saves energy sources and shortens production time.
Description
Technical Field
The invention relates to the technical field of machining of Audi C8 base structural members, in particular to a surface treatment method for an Audi C8 base structural member.
Background
In the process of processing an Audi C8 base structural member, the surface of a C8 structural member needs to be processed, local corrosion easily occurs in the working process of the Audi C8 base structural member or in a corrosive environment medium, and the use performance of the Audi C8 base structural member is affected, so that the surface of the Audi C8 base structural member needs to be processed in the processing stage of the Audi C8 base structural member, but a specific processing method for the surface of the Audi C8 base structural member does not exist in the prior art, and due to the unique structure of the Audi C8 base structural member, if the processing method for the surface of other parts is forcibly applied to the Audi C8 base structural member, the processing effect is poor, and a good processing effect cannot be achieved, so that the use performance of the subsequent Audi C8 base.
Disclosure of Invention
The invention aims to provide a surface treatment method for an Audi C8 base structural member, which aims to solve the problem that the surface treatment effect of the conventional treatment process on the Audi C8 base structural member is poor.
The technical scheme for solving the technical problems is as follows: a surface treatment method for an Audi C8 base structural member comprises the following steps:
step 1: framing the base structural part and carrying out ultrasonic degreasing treatment and overturning cleaning treatment on the base structural part in the frame;
step 2: transferring the cleaned base structural part into a passivation tank and carrying out turning passivation treatment;
and step 3: carrying out turning, spraying and rinsing treatment on the passivated base structural part;
and 4, step 4: carrying out vacuum drying treatment on the cleaned base structural part;
further, in the step 1, firstly, framing the structural member, then placing the framed structural member into a degreasing tank containing cleaning liquid, degreasing and cleaning the structural member under the action of a turnover mechanism and ultrasonic waves, and respectively turning over the frame body in a forward direction and a reverse direction through the turnover mechanism in the degreasing and cleaning process;
and then transferring the degreased and cleaned structural part into a circulating water washing tank to clean the cleaning liquid attached to the surface of the structural part, wherein the cleaning liquid is firstly rinsed by turning over industrial water and then cleaned by turning over deionized water, and after the cleaning is finished, the turning-over mechanism is continuously kept on to clean accumulated water on the surface of the structural part.
Further, in the step 1, the temperature of cleaning water in the degreasing tank is 60-70 ℃, the pH value is 10-12, and the degreasing cleaning time is 6-7 min.
Further, the cleaning water in the step 1 comprises 9-18 parts of free alkali, 4.0g/L-5.5g/L of active agent, less than 1.0g/L of aluminum ion and the balance of water.
Further, the conductivity of the cleaning water in the circulating water washing tank in the step 1 is less than 600US/CM, the PH value is 7-9, and the cleaning time is 5-10 min.
Further, in step 2, put into the passivation jar that contains passivation liquid with the structure, open tilting mechanism, drive the structure upset through tilting mechanism, after the passivation, continue to keep tilting mechanism to open, open the drain valve of passivation jar simultaneously.
Further, in the step 2, the temperature in the passivation tank is 45-50 ℃, and the passivation time is 1-2 min.
Further, in the step 2, the passivation solution comprises 13-17 parts of free acid, the content of aluminum ions is less than 1.0g/L, and the balance of water.
Further, in the step 3, the passivated structural part is transferred into a rinsing and spin-drying tank, firstly, the structural part is overturned and cleaned by industrial water, overturned and sprayed for cleaning for 5min to 10min in cleaning water with the pH value of 4 to 7, then the cleaned structural part is transferred into another rinsing and spin-drying tank, deionized water hot water overturning and rinsing are carried out, meanwhile, the temperature of the deionized water in the rinsing and spin-drying tank is adjusted to 60 ℃ to 70 ℃, the pH value of the cleaning water is adjusted to 5 to 7, and the cleaning time is 5min to 10 min.
Further, in the step 4, the rinsed and dried structural member is transferred to a vacuum drying tank for drying, wherein the vacuum degree in the tank is less than or equal to-0.097, and the drying time is 8-10 min.
The invention has the following beneficial effects: the method for treating the surface of the structural member of the Audi C8 base has the advantages of good treatment effect and convenience in operation, and can effectively degrease and clean the surface of the structural member through the action of the turnover mechanism and ultrasonic waves; utilize tilting mechanism, the design of cooperation spraying water injection well choke, a large amount of clear water sprays on the structure in the upset via spraying the water injection well choke, can guarantee the cleaning performance of structure by the at utmost. The structural member in the cleaning tank is cleaned by spraying circulating water while being turned over, and after the cleaning is finished, the turning system is started to throw away accumulated water on the surface of the structural member, so that the pollution to the oxidizing liquid is reduced, and the quality of the oxidizing liquid is improved; by using the turnover system, the passivation solution is fully and uniformly stirred, and the passivation effect is improved. After passivation is finished, the overturning system is started (the drain valve is opened at the same time), accumulated water on the surface of the structural part is thrown away, passivation solution is saved, and pollution to circulating water washing is reduced. The water liquid of the passivation tank can be filled in advance, and the time of the water liquid can be adjusted by self to ensure the consistency of the surface treatment color of the structural member; in the rinsing and drying treatment, the structural part is preheated through water rising, necessary conditions are provided for subsequent vacuum drying, the structural part frame can continue to turn over under the driving of the turning mechanism after rinsing, water in the blind hole of the structural part is poured out, the burden is reduced for the next drying procedure, the subsequent drying time is shortened, and the drying effect is improved. When vacuum drying is carried out, the pressure in the tank is reduced through the vacuum pump, so that water on the surface of the structural member, in the blind hole and in the defect easily reaches the boiling point and is vaporized, vaporized water vapor is sucked out of the tank by the vacuum pump, the drying effect is good, the energy consumption is low, the energy is saved, and the production time is shortened.
Drawings
FIG. 1 is a flow chart of the processing method of the present invention.
Detailed Description
The principles and features of this invention are described below in conjunction with the following drawings, which are set forth by way of illustration only and are not intended to limit the scope of the invention.
As shown in fig. 1, step 1: and (3) framing the base structural part, and performing ultrasonic degreasing treatment and overturning cleaning treatment on the base structural part in the frame.
Specifically, in the step 1, firstly, framing the structural member, then placing the framed structural member into a degreasing tank containing cleaning liquid, degreasing and cleaning the structural member under the action of a turnover mechanism and ultrasonic waves, and respectively turning over the frame body in a forward direction and a reverse direction through the turnover mechanism in the degreasing and cleaning process; wherein the temperature of cleaning water in the degreasing tank is 60-70 ℃, the PH value is 10-12, and the degreasing cleaning time is 6-7 min. The cleaning water comprises 9-18 parts of free alkali, 4.0-5.5 g/L of active agent, less than 1.0g/L of aluminum ion and the balance of water.
And then transferring the degreased and cleaned structural part into a circulating water washing tank to clean the cleaning liquid attached to the surface of the structural part, wherein the cleaning liquid is firstly turned over and rinsed by industrial water and then turned over and cleaned by deionized water, the turning mechanism is continuously kept to be turned on after the cleaning is finished, accumulated water on the surface of the structural part is removed, the accumulated water on the surface of the structural part is thrown away, the pollution to oxidation liquid is reduced, and the quality of the oxidation liquid is improved. The conductivity of the deionized water in the circulating water washing tank is less than 600US/CM, the PH value is 7-9, the washing time is 5-10 min, and the residual degreasing washing liquid on the surface of the structural part is removed through washing by the deionized water.
This degreasing tank and circulation washing jar all adopt SUS304 stainless steel to make, and the jar body has upper and lower water tank, and the water tank has the heat preservation, and it is effectual to keep warm, and pneumatic mode switch cover is furnished with well sealed formula solenoid valve, and steady noise is little and guarantee fail safe nature. The structural part can be turned over in the tank body, and the turning mechanism is provided with an automatic locking device, so that the operation is convenient, safe and reliable; the working water is pumped by a stainless steel centrifugal pump and is provided with an advanced water supplementing system, so that the cleaning effect is ensured, and the cleaning agent is environment-friendly and energy-saving. The return water system is furnished with thick filter equipment, but filters great granule debris, and the filter fineness reaches 150um, is equipped with the biggest 25um of three bag-type filter fineness simultaneously. Except the high-pressure spraying surface, the other three surfaces of the cleaning tank are provided with a dirt overflow groove, and water is supplemented by a water pump to ensure that floating dirt washed on the surface of the structural member drifts to an oil-water filtering storage tank along the overflow groove, so that the purpose of oil-water separation is fully achieved. The lower water tank is provided with an electric heating pipe, is adjustable at normal temperature to 45 ℃, has a function of heating before class and has heating power of 60 KW; the upper water tank and the lower water tank are both provided with a liquid level control system, so that the occurrence of dry burning accidents and the environmental pollution caused by water overflowing of the water tanks are prevented. The tank is internally provided with an ultrasonic generator, and when the tank is filled with water, the turnover mechanism drives the structural part to turn over within the range of the ultrasonic transducer, so that dirt on the surface of the structural part can be cleaned.
Step 2: and transferring the cleaned base structural part into a passivation tank and carrying out turning passivation treatment.
Specifically, put into the passivation jar that the splendid attire has passivation liquid with the structure, open tilting mechanism, drive the structure upset through tilting mechanism, after the passivation, continue to keep tilting mechanism to open, open the drain valve of passivation jar simultaneously. The passivation solution comprises 13-17 parts of free acid, less than 1.0g/L of aluminum ion and the balance of water. The temperature in the passivation tank is 45-50 ℃, and the passivation time is 1-2 min. The structural member is conveyed into the passivation tank for treatment, and the passivation solution is fully and uniformly stirred by using the turnover system, so that the passivation effect is improved. After passivation is finished, the overturning system is started (the drain valve is opened at the same time), accumulated water on the surface of the structural part is thrown away, passivation solution is saved, and pollution to circulating water washing is reduced. The water liquid of the passivation tank can be filled in advance, and the time of the water liquid can be adjusted by self to ensure the consistency of the surface treatment color of the structural member.
In the passivation treatment, the passivation tank is electrically heated, 316 stainless steel is used for heating the tube, the temperature is heated from room temperature to the temperature of 40 ℃ required by the process within 2 hours, the heating temperature is adjustable between room temperature and 50 ℃, and the automatic control is realized. The passivation time is automatically controlled, the timing can be displayed and adjusted, and sound, light and electric alarms are provided after the process requirement is met until the basket body provided with the structural part is lifted out. The tank body and the water tank body are made of 3mm SUS316 stainless steel, the heat insulation layer is made of 1.2mm stainless steel plates, passivation liquid in each passivation liquid storage tank is filtered by a stainless steel centrifugal water pump and then is sent into each passivation tank, three bags of filters are used, and the filtering device is convenient to disassemble, clean and replace. The pneumatic mode switch cover, steady noise is little to guarantee fail safe nature. The speed of the turnover mechanism is controlled through a frequency converter, and the rotating speed is adjustable at 3-7 r/min. The turnover mechanism is provided with an automatic locking device, so that the turnover mechanism is safe, reliable and convenient to operate; the automatic dosing device has a counting function, and can automatically alarm and prompt dosing (without a metering pump) after reaching a set quantity under the condition of manual operation. Under the condition of automatic operation (no alarm is prompted), the passivation solution can be automatically added under the control of a metering pump, and the adding amount is adjustable (reference value: 2.5 liters is added for every 4 frames of structural parts). Setting an automatic aeration function and stirring the passivation solution.
And step 3: and (5) carrying out overturning, spraying and rinsing treatment on the passivated base structural part.
Specifically, the passivated structural part is transferred into a rinsing spin-drying tank, firstly, the structural part is cleaned by industrial water in a turning mode, the structural part is cleaned by turning and spraying in cleaning water with the pH value of 4-7 for 5-10 min, then the cleaned structural part is sent into another rinsing spin-drying tank, deionized water and hot water are turned and rinsed, meanwhile, the temperature of the deionized water in the rinsing spin-drying tank is adjusted to 60-70 ℃, the pH value of the cleaning water is adjusted to 5-7, and the cleaning time is 5-10 min. The structure frame can overturn under tilting mechanism's drive, pours out the water in the structure blind hole, for next drying process alleviates the burden, shortens follow-up drying time, improves drying effect.
And 4, step 4: and carrying out vacuum drying treatment on the cleaned base structural part. Vacuum drying works on the principle that the boiling point of water decreases with decreasing pressure. The vacuum degree in the tank is less than or equal to-0.097, and the drying time is 8min-10 min. The structural member with the temperature is placed into a drying tank, the pressure in the tank is reduced through a vacuum pump, so that water on the surface of the structural member, in the blind hole and in the defect easily reaches a boiling point and is vaporized, and the vaporized water vapor is sucked out of the tank by the vacuum pump and is discharged out of the tank, and the purpose of drying the structural member is achieved. The vacuum drying has good effect and low energy consumption, and compared with the traditional heating and drying mode, the vacuum drying mode not only saves energy, but also shortens the production takt.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (6)
1. A surface treatment method for an Audi C8 base structural member is characterized by comprising the following steps:
step 1: framing the base structural part and carrying out ultrasonic degreasing treatment and overturning cleaning treatment on the base structural part in the frame;
step 1, firstly, framing a structural part, then placing the framed structural part into a degreasing tank containing cleaning liquid, degreasing and cleaning the structural part under the action of a turnover mechanism and ultrasonic waves, and respectively turning over a frame body in a forward direction and a reverse direction through the turnover mechanism in the degreasing and cleaning process;
transferring the degreased and cleaned structural part into a circulating water washing tank to perform overturning washing treatment on the cleaning liquid attached to the surface of the structural part, wherein the cleaning liquid is firstly overturned and rinsed by industrial water and then overturned and cleaned by deionized water, and the overturning mechanism is continuously kept opened after the cleaning is finished to remove accumulated water on the surface of the structural part;
step 2: transferring the cleaned base structural part into a passivation tank and carrying out turning passivation treatment;
and step 3: carrying out turning, spraying and rinsing treatment on the passivated base structural part;
and 4, step 4: and carrying out vacuum drying treatment on the cleaned base structural part.
2. The surface treatment method for the Audi C8 base structural member, according to claim 1, wherein the temperature of the cleaning water in the degreasing tank in step 1 is 60-70 ℃, the pH value is 10-12, and the degreasing cleaning time is 6-7 min.
3. The method for surface treatment of the Audi C8 base structural member, according to claim 1, wherein the conductivity of the deionized water in the circulating water washing tank in the step 1 is less than 600uS/cm, the pH value is 7-9, and the washing time is 5-10 min.
4. The method for surface treatment of structural members of an Audi C8 base according to claim 1, wherein in step 2, the structural members are placed in a passivation tank containing passivation solution, the turnover mechanism is started, the structural members are driven to turn over by the turnover mechanism, and after passivation is finished, the turnover mechanism is continuously kept started, and meanwhile, a drain valve of the passivation tank is opened.
5. The surface treatment method for the Audi C8 base structural member, according to claim 4, wherein the temperature in the passivation tank in the step 2 is 45-50 ℃, and the passivation time is 1-2 min.
6. The method as claimed in claim 1, wherein in step 3, the passivated structural member is transferred to a rinsing and spin-drying tank, the passivated structural member is first cleaned by industrial water in a turning manner, the cleaning water with a pH value of 4-7 is used for 5-10 min in a turning manner, the cleaned structural member is transferred to another rinsing and spin-drying tank for deionized water hot water turning rinsing, the temperature of deionized water in the rinsing and spin-drying tank is adjusted to 60-70 ℃, the pH value of cleaning water is adjusted to 5-7, and the cleaning time is 5-10 min.
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| CN201911196610.2A CN110863210B (en) | 2019-11-29 | 2019-11-29 | Surface treatment method for Audi C8 base structural member |
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| CN201911196610.2A CN110863210B (en) | 2019-11-29 | 2019-11-29 | Surface treatment method for Audi C8 base structural member |
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| CN110863210B true CN110863210B (en) | 2020-08-25 |
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| CN208328105U (en) * | 2018-05-09 | 2019-01-04 | 广州斯特福材料科技有限公司 | A kind of uniform machine for inactivating of passivation |
| CN109163509A (en) * | 2018-07-27 | 2019-01-08 | 厦门建霖健康家居股份有限公司 | A kind of Minton dryer and vacuum drying method |
| CN110408920A (en) * | 2019-09-02 | 2019-11-05 | 南京思甲宁新材料科技有限公司 | A kind of automobile Hardware fitting process of surface treatment |
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