CN109382295A - A kind of coating method preventing O-ring surface PTFE coating shedding - Google Patents
A kind of coating method preventing O-ring surface PTFE coating shedding Download PDFInfo
- Publication number
- CN109382295A CN109382295A CN201811257743.1A CN201811257743A CN109382295A CN 109382295 A CN109382295 A CN 109382295A CN 201811257743 A CN201811257743 A CN 201811257743A CN 109382295 A CN109382295 A CN 109382295A
- Authority
- CN
- China
- Prior art keywords
- coating
- ring
- ring surface
- water mill
- preventing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/02—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials to macromolecular substances, e.g. rubber
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/002—Pretreatement
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D3/00—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials
- B05D3/10—Pretreatment of surfaces to which liquids or other fluent materials are to be applied; After-treatment of applied coatings, e.g. intermediate treating of an applied coating preparatory to subsequent applications of liquids or other fluent materials by other chemical means
- B05D3/101—Pretreatment of polymeric substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D7/00—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials
- B05D7/24—Processes, other than flocking, specially adapted for applying liquids or other fluent materials to particular surfaces or for applying particular liquids or other fluent materials for applying particular liquids or other fluent materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2201/00—Polymeric substrate or laminate
- B05D2201/02—Polymeric substrate
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2350/00—Pretreatment of the substrate
- B05D2350/30—Change of the surface
- B05D2350/33—Roughening
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D—PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05D2506/00—Halogenated polymers
- B05D2506/10—Fluorinated polymers
- B05D2506/15—Polytetrafluoroethylene [PTFE]
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Wood Science & Technology (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a kind of coating methods for preventing O-ring surface PTFE coating shedding, are related to O-ring external coating technical field, comprising the following steps: primary cleaning, water mill, secondary cleaning, coating.The present invention is to be added to water mill and secondary cleaning processing step on the basis of traditional PTFE coating method, water mill processing is carried out to O-ring surface using water mill particle, to improve the roughness on its surface, and then improve the binding force between PTFE coating and rubber substrate, secondary cleaning is carried out again, alkaline cleaner used in the neutral cleaners of use and primary cleaning, which cooperates, to be cleaned, effectively remove the impurity of O-ring surface adhesion, guarantee its surface cleanness, to improve the stability of coating, coating is avoided to fail to be adhered to completely on O-ring surface.This method effectively improves the binding force between PTFE coating and rubber o-ring, uniform coating thickness, form compact and stable, not easily to fall off.
Description
Technical field
The present invention relates to O-ring external coating technical fields more particularly to one kind to prevent O-ring surface PTFE coating shedding
Coating method.
Background technique
O-ring is as a kind of important industrial foundation part, almost in all transport facilitys, machinery, the energy and electricity
In the equipment such as device, play vital sealing function, for example, from aircraft, naval vessel, automobile, bullet train engine, with
And the heavy mechanical equipment for recovering the oil, mining, digging up mine, until household electrical appliance, such as air-conditioning, water heater and water purifier, none be unable to do without
O-ring seal.When being used for rubber o-ring in certain specific mechanical equipments, the surface of O-ring can generally be coated
Handle the performance, such as chemical resistance, mechanical property etc. to enhance O-ring.O-ring surface through PTFE coating coating after have with
Lower advantage: a. reduces coefficient of friction, makes simple to install and helps to prevent from adhering to each other, without using lubricant；B. it improves
The chemical resistance and weatherability of product, from the corrosion of solvent, salt water etc.；C. make product that there is color code, to distinguish,
It can provide a series of colors, from traditional black to orange；D. the efficiency of equipment automatization assembly is improved.However, existing skill
The coating of PTFE coating is that PTFE coating is directly sprayed O-ring surface after cleaning in art, and coating is direct with rubber matrix
Binding force it is poor, it is easy to fall off there are coating phenomena such as.
Summary of the invention
Technical problems based on background technology, the invention proposes one kind to prevent O-ring surface PTFE coating shedding
Coating method, this method effectively improves the binding force between PTFE coating and rubber o-ring, uniform coating thickness, fine and close steady
It is fixed, it is not easily to fall off.
A kind of coating method preventing O-ring surface PTFE coating shedding proposed by the present invention, comprising the following steps:
S1. primary cleaning: O-ring is cleaned with alkalescent cleaning agent, is dried；
S2. water mill: water mill processing is carried out to O-ring using water mill particle, until O-ring surface is dumb light；
S3. secondary cleaning: O-ring is cleaned with neutral cleaners, is dried；
S4. it coats: PTFE coating is sprayed into O-ring surface, dry.
Preferably, in S1, primary cleaning is with equipment using industrial roller washing machine；Preferably, scavenging period 30-
50min。
Preferably, in S2, water mill particle is made of resin sand and terrazzo compounding, and the weight percent of the two is 8-
14%:86-92%.
Preferably, in S2, the partial size of resin sand and terrazzo, which is respectively less than, is equal to O-ring internal diameter, and is less than or equal to 1cm.
Preferably, in S2, the technological parameter of water mill processing are as follows: revolving speed 70-100r/min, water mill time are 30-
60min。
Preferably, in S3, secondary cleaning uses ultrasonic activation cleaning machine with equipment；Preferably, scavenging period 20-
40min。
Preferably, in S4, it is to be placed in O-ring in PTFE special coating machine, vacuumizes, preheats, then by PTFE coating
Atomization sprays O-ring surface.
Preferably, it is evacuated to -10~-30Pa.
Preferably, the revolving speed of warm-up phase flush coater staving is 25-30r/min, and preheating temperature is 70-80 DEG C.
Preferably, the revolving speed for spraying atomization step flush coater staving is 20-25r/min, and spraying temperature is 60-70 DEG C.
The utility model has the advantages that being in tradition the invention discloses a kind of coating method for preventing O-ring surface PTFE coating shedding
It is added to water mill and secondary cleaning processing step on the basis of PTFE coating method, O-ring surface is carried out using water mill particle
Water mill processing to improve the roughness on its surface, and then improves the binding force between PTFE coating and rubber substrate, and water mill
Ratio between the two is compounded and controlled using resin sand and terrazzo, and hardness is moderate, and water mill effect is good, carries out two after water mill again
Alkaline cleaner used in secondary cleaning, the neutral cleaners of use and primary cleaning, which cooperates, to be cleaned, and O-ring is effectively removed
The impurity of surface adhesion guarantees its surface cleanness, to improve the stability of coating, coating is avoided to fail to be adhered to O completely
On type circle surface, in addition, industrial roller washing machine and ultrasonic activation cleaning machine that cleaning twice is selected respectively with equipment, it is ensured that
Cost is also reduced while cleaning effect；In spraying process, flush coater is vacuumized and staving is rotated, can be made
Product spraying is more uniform, so that it is guaranteed that the stabilization and densification of coating layer thickness.This method effectively improves PTFE coating and RUBBER O type
Binding force between circle, it is uniform coating thickness, form compact and stable, it is not easily to fall off.
Specific embodiment
In the following, technical solution of the present invention is described in detail by specific embodiment.
Embodiment 1
A kind of coating method preventing O-ring surface PTFE coating shedding proposed by the present invention, comprising the following steps:
S1. primary cleaning: O-ring is placed in industrial roller washing machine, and additional amount is no more than the 1/2 of washing machine capacity,
Then alkalescent cleaning agent is added, cleans 30min, rinsing, integral type drying；The step can effectively remove the impurity on O-ring
And the related grease such as release agent, to avoid being mixed into for impurity during subsequent coated；
S2. water mill: O-ring is placed in levigator, and additional amount is no more than the 1/2 of levigator capacity, and water mill particle is added
Water mill processing is carried out, until O-ring surface from light becomes dumb light, wherein water mill particle be by resin sand and terrazzo according to
The weight percent compounding composition of 8%:92%, partial size, which is respectively less than, is equal to O-ring internal diameter, and is less than or equal to 1cm, levigator
Revolving speed be 70r/min, the water mill time be 30min；
S3. secondary cleaning: O-ring is placed in ultrasonic activation cleaning machine, and additional amount is no more than the 2/ of washing machine capacity
3, neutral cleaners are then added, clean 20min, rinsing, integral type drying；The purpose of the step is to keep product surface micro-
Free from admixture adheres under sight state, and clean surface makes the surface cleanness of product obtain maximum guarantee, to be conducive to coating and O
Type circle surface is completely combined, and improves the stability of coating, avoids potential coating shedding risk；
S4. it coats: O-ring being placed in PTFE special coating machine, -10Pa is evacuated to, preheat, controlled in warm
The revolving speed of flush coater staving is 25r/min, and preheating temperature is 70 DEG C, and the atomization of PTFE coating is then sprayed O-ring surface, is sprayed
The revolving speed of control flush coater staving is 20r/min during covering, and spraying temperature is 60 DEG C, is then dried.To spraying in the step
Machine is vacuumized, and is rotated to staving, and product spraying can be made more uniform, and coating layer thickness keeps stable and fine and close.
Embodiment 2
A kind of coating method preventing O-ring surface PTFE coating shedding proposed by the present invention, comprising the following steps:
S1. primary cleaning: O-ring is placed in industrial roller washing machine, and additional amount is no more than the 1/2 of washing machine capacity,
Then alkalescent cleaning agent is added, cleans 50min, rinsing, integral type drying；The step can effectively remove the impurity on O-ring
And the related grease such as release agent, to avoid being mixed into for impurity during subsequent coated；
S2. water mill: O-ring is placed in levigator, and additional amount is no more than the 1/2 of levigator capacity, and water mill particle is added
Water mill processing is carried out, until O-ring surface from light becomes dumb light, wherein water mill particle be by resin sand and terrazzo according to
The weight percent compounding composition of 14%:86%, partial size, which is respectively less than, is equal to O-ring internal diameter, and is less than or equal to 1cm, water mill
The revolving speed of machine is 100r/min, and the water mill time is 60min；
S3. secondary cleaning: O-ring is placed in ultrasonic activation cleaning machine, and additional amount is no more than the 2/ of washing machine capacity
3, neutral cleaners are then added, clean 40min, rinsing, integral type drying；The purpose of the step is to keep product surface micro-
Free from admixture adheres under sight state, and clean surface makes the surface cleanness of product obtain maximum guarantee, to be conducive to coating and O
Type circle surface is completely combined, and improves the stability of coating, avoids potential coating shedding risk；
S4. it coats: O-ring being placed in PTFE special coating machine, -30Pa is evacuated to, preheat, controlled in warm
The revolving speed of flush coater staving is 30r/min, and preheating temperature is 80 DEG C, and the atomization of PTFE coating is then sprayed O-ring surface, is sprayed
The revolving speed of control flush coater staving is 25r/min during covering, and spraying temperature is 70 DEG C, is then dried.To spraying in the step
Machine is vacuumized, and is rotated to staving, and product spraying can be made more uniform, and coating layer thickness keeps stable and fine and close.
Embodiment 3
A kind of coating method preventing O-ring surface PTFE coating shedding proposed by the present invention, comprising the following steps:
S1. primary cleaning: O-ring is placed in industrial roller washing machine, and additional amount is no more than the 1/2 of washing machine capacity,
Then alkalescent cleaning agent is added, cleans 40min, rinsing, integral type drying；The step can effectively remove the impurity on O-ring
And the related grease such as release agent, to avoid being mixed into for impurity during subsequent coated；
S2. water mill: O-ring is placed in levigator, and additional amount is no more than the 1/2 of levigator capacity, and water mill particle is added
Water mill processing is carried out, until O-ring surface from light becomes dumb light, wherein water mill particle be by resin sand and terrazzo according to
The weight percent compounding composition of 10%:90%, partial size, which is respectively less than, is equal to O-ring internal diameter, and is less than or equal to 1cm, water mill
The revolving speed of machine is 80r/min, and the water mill time is 40min；
S3. secondary cleaning: O-ring is placed in ultrasonic activation cleaning machine, and additional amount is no more than the 2/ of washing machine capacity
3, neutral cleaners are then added, clean 25min, rinsing, integral type drying；The purpose of the step is to keep product surface micro-
Free from admixture adheres under sight state, and clean surface makes the surface cleanness of product obtain maximum guarantee, to be conducive to coating and O
Type circle surface is completely combined, and improves the stability of coating, avoids potential coating shedding risk；
S4. it coats: O-ring being placed in PTFE special coating machine, -18Pa is evacuated to, preheat, controlled in warm
The revolving speed of flush coater staving is 25r/min, and preheating temperature is 70 DEG C, and the atomization of PTFE coating is then sprayed O-ring surface, is sprayed
The revolving speed of control flush coater staving is 20r/min during covering, and spraying temperature is 60 DEG C, is then dried.To spraying in the step
Machine is vacuumized, and is rotated to staving, and product spraying can be made more uniform, and coating layer thickness keeps stable and fine and close.
Embodiment 4
A kind of coating method preventing O-ring surface PTFE coating shedding proposed by the present invention, comprising the following steps:
S1. primary cleaning: O-ring is placed in industrial roller washing machine, and additional amount is no more than the 1/2 of washing machine capacity,
Then alkalescent cleaning agent is added, cleans 45min, rinsing, integral type drying；The step can effectively remove the impurity on O-ring
And the related grease such as release agent, to avoid being mixed into for impurity during subsequent coated；
S2. water mill: O-ring is placed in levigator, and additional amount is no more than the 1/2 of levigator capacity, and water mill particle is added
Water mill processing is carried out, until O-ring surface from light becomes dumb light, wherein water mill particle be by resin sand and terrazzo according to
The weight percent compounding composition of 12%:88%, partial size, which is respectively less than, is equal to O-ring internal diameter, and is less than or equal to 1cm, water mill
The revolving speed of machine is 90r/min, and the water mill time is 50min；
S3. secondary cleaning: O-ring is placed in ultrasonic activation cleaning machine, and additional amount is no more than the 2/ of washing machine capacity
3, neutral cleaners are then added, clean 30min, rinsing, integral type drying；The purpose of the step is to keep product surface micro-
Free from admixture adheres under sight state, and clean surface makes the surface cleanness of product obtain maximum guarantee, to be conducive to coating and O
Type circle surface is completely combined, and improves the stability of coating, avoids potential coating shedding risk；
S4. it coats: O-ring being placed in PTFE special coating machine, -24Pa is evacuated to, preheat, controlled in warm
The revolving speed of flush coater staving is 30r/min, and preheating temperature is 75 DEG C, and the atomization of PTFE coating is then sprayed O-ring surface, is sprayed
The revolving speed of control flush coater staving is 25r/min during covering, and spraying temperature is 65 DEG C, is then dried.To spraying in the step
Machine is vacuumized, and is rotated to staving, and product spraying can be made more uniform, and coating layer thickness keeps stable and fine and close.
Using the coating method in 1-4 of the embodiment of the present invention to internal diameter Φ 27.94, the O-ring for cutting diameter Φ 3.53 is carried out
PTFE spray treatment, as a result as follows: 1. examine three classes, 11256 products, do not find that appearance has the case where PTFE coating shedding,
Per tour inspects 10 product tensile testings by random samples and also finds no dropping situations after stretching, i.e., judgement is without the threat that falls off；2. improving inspection
Efficiency is surveyed, O-ring detection efficiency promotes 50%, saves full inspection process, sampling observation.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (10)
1. a kind of coating method for preventing O-ring surface PTFE coating shedding, which comprises the following steps:
S1. primary cleaning: O-ring is cleaned with alkalescent cleaning agent, is dried；
S2. water mill: water mill processing is carried out to O-ring using water mill particle, until O-ring surface is dumb light；
S3. secondary cleaning: O-ring is cleaned with neutral cleaners, is dried；
S4. it coats: PTFE coating is sprayed into O-ring surface, dry.
2. the coating method according to claim 1 for preventing O-ring surface PTFE coating shedding, which is characterized in that in S1,
Primary cleaning is with equipment using industrial roller washing machine；Preferably, scavenging period 30-50min.
3. the coating method according to claim 1 or 2 for preventing O-ring surface PTFE coating shedding, which is characterized in that S2
In, water mill particle is made of resin sand and terrazzo compounding, and the weight percent of the two is 8-14%:86-92%.
4. the coating method according to claim 3 for preventing O-ring surface PTFE coating to be detached from, which is characterized in that in S2,
The partial size of resin sand and terrazzo, which is respectively less than, is equal to O-ring internal diameter, and is less than or equal to 1cm.
5. the coating method according to claim 1 to 4 for preventing O-ring surface PTFE coating to be detached from, feature exist
In, in S2, the technological parameter of water mill processing are as follows: revolving speed 70-100r/min, water mill time are 30-60min.
6. -5 any coating method for preventing O-ring surface PTFE coating to be detached from, feature exist according to claim 1
In in S3, secondary cleaning uses ultrasonic activation cleaning machine with equipment；Preferably, scavenging period 20-40min.
7. -6 any coating method for preventing O-ring surface PTFE coating to be detached from, feature exist according to claim 1
In, in S4, be to be placed in O-ring in PTFE special coating machine, vacuumize, preheat, then by PTFE coating atomization spray it is O-shaped
Enclose surface.
8. the coating method according to claim 7 for preventing O-ring surface PTFE coating to be detached from, which is characterized in that take out true
Empty extremely -10~-30Pa.
9. the coating method according to claim 7 for preventing O-ring surface PTFE coating to be detached from, which is characterized in that preheating
The revolving speed of stage flush coater staving is 25-30r/min, and preheating temperature is 70-80 DEG C.
10. the coating method according to claim 7 for preventing O-ring surface PTFE coating to be detached from, which is characterized in that spraying
The revolving speed of atomization step flush coater staving is 20-25r/min, and spraying temperature is 60-70 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811257743.1A CN109382295A (en) | 2018-10-26 | 2018-10-26 | A kind of coating method preventing O-ring surface PTFE coating shedding |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811257743.1A CN109382295A (en) | 2018-10-26 | 2018-10-26 | A kind of coating method preventing O-ring surface PTFE coating shedding |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109382295A true CN109382295A (en) | 2019-02-26 |
Family
ID=65428139
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811257743.1A Pending CN109382295A (en) | 2018-10-26 | 2018-10-26 | A kind of coating method preventing O-ring surface PTFE coating shedding |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109382295A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691650A (en) * | 2013-12-31 | 2014-04-02 | 南京金三力橡塑有限公司 | Method for coating insulating self-lubricating coatings on surfaces of rubber products |
| CN104817712A (en) * | 2015-04-29 | 2015-08-05 | 南京金三力橡塑有限公司 | Method for preventing of adhesion of fluororubber O-shaped ring during secondary vulcanization |
| CN106832374A (en) * | 2015-12-04 | 2017-06-13 | 安徽库伯密封技术有限公司 | A kind of method for improving O-ring service life |
| CN107297315A (en) * | 2016-04-14 | 2017-10-27 | 株洲时代新材料科技股份有限公司 | The coating process of high-elastic wear-resistant elastomeric material |
-
2018
- 2018-10-26 CN CN201811257743.1A patent/CN109382295A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103691650A (en) * | 2013-12-31 | 2014-04-02 | 南京金三力橡塑有限公司 | Method for coating insulating self-lubricating coatings on surfaces of rubber products |
| CN104817712A (en) * | 2015-04-29 | 2015-08-05 | 南京金三力橡塑有限公司 | Method for preventing of adhesion of fluororubber O-shaped ring during secondary vulcanization |
| CN106832374A (en) * | 2015-12-04 | 2017-06-13 | 安徽库伯密封技术有限公司 | A kind of method for improving O-ring service life |
| CN107297315A (en) * | 2016-04-14 | 2017-10-27 | 株洲时代新材料科技股份有限公司 | The coating process of high-elastic wear-resistant elastomeric material |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105820605A (en) | Preparation method of universal super-amphiphobic nano coating based on flower shape titanium dioxide nano particles | |
| CN105088218B (en) | A kind of metal surface coating process | |
| CN101988194A (en) | Site rust-removing and corrosion-preventing method for steel piece of electric power system | |
| CN107199168A (en) | A kind of handware baking finish process method | |
| CN101161916A (en) | Nano protective liquid for weaving and preparation method thereof | |
| CN107022766B (en) | Metal surface cleaning agent, preparation method and metal surface cleaning method | |
| CN105442018B (en) | Conductive oxidation process for automobile aluminum alloy parts | |
| CN103697751A (en) | Surface coating for heat exchanger and surface treatment method for heat exchanger | |
| CN109382295A (en) | A kind of coating method preventing O-ring surface PTFE coating shedding | |
| CN109750510B (en) | Super-hydrophobic wool fabric and preparation method thereof | |
| CN105131831A (en) | Stone material surface anti-fouling paint and method of applying same to marble surface for preventing fouling | |
| CN107876353A (en) | GIS enamel chemical industry skills | |
| CN205136328U (en) | Zinc -nickel oozes layer preserved handle to be connected vicely | |
| CN102367566B (en) | Cast iron vacuum chromium plating method | |
| CN107419252B (en) | A kind of appliance panel surface abrasion resistance treatment process | |
| CN101381545A (en) | Non-home oil pollution strippable spray painting transparent film for cleaning | |
| CN107552356A (en) | Process for surface preparation before the spray painting of the chemical pump pump housing | |
| CN106118302A (en) | A kind of preparation method for outdoor type water-based anticorrosive paint | |
| CN106040514A (en) | Brushing method of chemical pump body paint | |
| CN104893544A (en) | Fireproof wind-sand-resistant paint for desert environment wood ancient building and preparation method of fireproof wind-sand-resistant paint | |
| CN102226267A (en) | Device for continuously performing primer spraying, drying and electroplating in vacuum chamber | |
| CN104593765A (en) | Corrosion-resistant colored film of austenite thin-wall stainless steel pipe and preparation method of corrosion-resistant colored film | |
| CN103343346A (en) | Technology for improvising corrosion resistance on surface of aluminum or aluminum alloy | |
| CN103122915B (en) | Manufacture method of screw with protective layer | |
| CN103977988A (en) | Cleaning method for high-temperature component |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190226 |
|
| RJ01 | Rejection of invention patent application after publication |