CN110665773A - Processing technology of high-pressure flow environment-friendly integrated electric fuel pump integrated shell - Google Patents
Processing technology of high-pressure flow environment-friendly integrated electric fuel pump integrated shell Download PDFInfo
- Publication number
- CN110665773A CN110665773A CN201910935002.2A CN201910935002A CN110665773A CN 110665773 A CN110665773 A CN 110665773A CN 201910935002 A CN201910935002 A CN 201910935002A CN 110665773 A CN110665773 A CN 110665773A
- Authority
- CN
- China
- Prior art keywords
- integrated
- integrated shell
- blank
- shell
- fuel pump
- 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
- 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
- B05D3/007—After-treatment
-
- 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
- B05D5/00—Processes for applying liquids or other fluent materials to surfaces to obtain special surface effects, finishes or structures
-
- 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
- B05D7/26—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 synthetic lacquers or varnishes
-
- 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
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/544—No clear coat specified the first layer is let to dry at least partially before applying the second layer
-
- 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
- B05D7/50—Multilayers
- B05D7/52—Two layers
- B05D7/54—No clear coat specified
- B05D7/546—No clear coat specified each layer being cured, at least partially, separately
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
-
- 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/02—Pretreatment of the material to be coated
-
- 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
- C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
- C23C8/80—After-treatment
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Life Sciences & Earth Sciences (AREA)
- Wood Science & Technology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to a high-pressure flow environment-friendly integrated electric fuel pump, in particular to a processing technology of an integrated shell of the high-pressure flow environment-friendly integrated electric fuel pump. The technical scheme is as follows: a processing technology for an integrated shell of a high-pressure flow environment-friendly integrated electric fuel pump comprises the following steps: a. cold heading to obtain an integrated shell rough blank; b. carrying out solution treatment on the shell-forming rough blank in the step a; c. carrying out fine machining on the integrated shell rough blank; d. performing shot blasting treatment on the integrated shell rough blank; e. activating the integrated shell blank; f. carrying out non-metal element composite infiltration on the integrated shell body; g. insulating the integrated shell blank; h. cooling the integrated shell blank; i. forming a primer film on the surface of the integrated shell blank by using an anti-rust primer; j. and coating high-solid paint on the integrated shell blank to obtain a finished product. By adopting the scheme, the processing technology of the high-pressure flow environment-friendly integrated electric fuel pump integrated shell with improved hardness and good corrosion resistance is provided.
Description
Technical Field
The invention relates to a high-pressure flow environment-friendly integrated electric fuel pump, in particular to a processing technology of an integrated shell of the high-pressure flow environment-friendly integrated electric fuel pump.
Background
Fuel pumps are a term of art in the automotive industry. Is one of the basic components of the fuel injection system of the electronic fuel injection automobile. The fuel oil is sucked from the fuel oil tank, pressurized and then conveyed to the fuel oil supply pipe to be connected with the fuel oil nozzle.
In comparatively special operating mode, in order to improve fuel oil system's pressure and flow, can pass through plastics pipe implementation with a plurality of fuel pump usually and connect, this kind of mode adopts pipe connection, and not only the connection process is comparatively loaded down with trivial details, and pipe department easily appears revealing moreover, and its pressure is unstable. And the fuel pump needs to be operated continuously, otherwise the fuel supply pressure thereof is unstable. The fuel pump not only consumes more energy and wastes more resources, but also has shorter service life and is easy to break down.
In order to overcome the defects, the applicant filed an application subject of "high-pressure large-flow environment-friendly integrated electric fuel pump device" on 27/6/2018, and the application numbers are as follows: ZL201810675280.4 application. The fuel pump assembly mainly comprises an integrated shell and a plurality of fuel pumps which are arranged in the integrated shell in parallel, wherein channels for communicating the fuel pumps with each other, fuel inlets and fuel outlets for oil inlet and oil outlet are arranged in the integrated shell. The fuel pumps are connected without a guide pipe, the fuel pumps are directly connected by the channel, the channel can be connected, the defect of unstable sealing caused by the connection of the guide pipe is overcome, the sealing performance is good, the leakage condition is avoided, and the pressure of the fuel pumps in the connection process is stabilized.
In the use process, if the integrated shell is fixedly installed with the vehicle body, when a certain fuel pump in the integrated shell breaks down, the fuel pump can be directly replaced without detaching the integrated shell from the vehicle body. Because the integrated shell is in special working conditions, certain requirements are provided for the hardness and the corrosion resistance of the integrated shell. The traditional processing mode is to carry out electroplating treatment on the integrated shell. However, the electroplating treatment not only has a great pollution to the environment, but also has corrosion resistance which can not meet the current requirements.
Disclosure of Invention
As a further improvement on the technology, the invention provides a processing technology of the high-pressure flow environment-friendly integrated electric fuel pump integrated shell, which has the advantages of hardness improvement and good corrosion resistance.
In order to achieve the purpose, the invention provides the following technical scheme: the processing technology of the integrated shell of the high-pressure flow environment-friendly integrated electric fuel pump is characterized by comprising the following steps of: a. performing cold heading on the material to obtain an integrated shell rough blank; b. b, performing solid solution treatment on the integrated shell rough blank in the step a, putting the integrated shell rough blank into a high-temperature furnace, keeping the temperature at 1150-1250 ℃, preserving the heat for 1.5-2 h, and then putting the integrated shell rough blank into water for quick cooling; c. b, carrying out finish machining on the integrated shell rough blank subjected to solid solution in the step b, namely machining a fuel pump placing cavity and a fuel inlet and outlet channel on the integrated shell rough blank through a drilling machine and a grinding machine to obtain an integrated shell blank; d. performing shot blasting treatment on the integrated shell rough blank subjected to finish machining; e. activating the integrated shell body subjected to shot blasting treatment at the activation temperature of 200-220 ℃ for 1-1.5 h;
f. c, carrying out non-metal element composite infiltration on the integrated shell blank activated in the step e; g. keeping the temperature of the integrated shell blank subjected to the non-metal element composite infiltration in the step f for 1-1.5 h at the temperature of 300-350 ℃; h. putting the integrated shell blank subjected to heat preservation in the step g into a container for cooling, and filling inert gas into the container; i. removing oil from the integrated shell blank cooled in the step h by ultrasonic waves, coating aluminum tripolyphosphate epoxy antirust primer on the surface of the integrated shell blank, and drying for 6h to promote the surface of the integrated shell blank to form a primer film; j. and (e) coating high-solid paint on the integrated shell blank with the primer film formed on the surface in the step (i), drying, forming a high-solid paint film on the surface of the integrated shell blank, and cleaning the surface of the integrated shell to obtain a finished product.
Wherein, the nonmetallic element in the step f adopts nitrocarburizing.
The inert gas in step h is nitrogen.
The thickness of the primer film in the step i is 25-35 μm.
The thickness of the high-solid paint is 40-55 μm.
By adopting the technical scheme, after the integrated shell rough blank is subjected to solution treatment, the hardness and the stress strength of the integrated shell rough blank can be improved; after shot blasting, the surface of the integrated shell is activated, so that residual oil stains on the surface of the integrated shell and the surface of an activated material can be cleaned, and the non-metal infiltration effect is catalytically improved; the wear resistance and hardness of the integrated shell rough blank can be improved by the non-metallic element composite infiltration, the rolling and flowing of tank liquor are facilitated, the infiltration speed of the surface of the integrated shell can be improved, and the product deformation can be reduced; and g, putting the integrated shell blank subjected to heat preservation in the step g into a container for cooling, and simultaneously filling inert gas to improve the smoothness of the surface of the integrated shell, ensure the uniformity of the surface color of the integrated shell and facilitate the subsequent formation of a paint film. The anti-rust primer with the aluminum tripolyphosphate epoxy coated on the surface can protect the integrated shell from the process, and the aluminum tripolyphosphate in the anti-rust primer with the aluminum tripolyphosphate epoxy also has a chelating function; the arrangement of the primer paint film and the high-solid paint film can form a corrosion-resistant layer on the surface of the integrated shell, so that the corrosion-resistant paint film has a corrosion-resistant effect on one hand, and the surface hardness of the integrated shell is improved on the other hand.
Detailed Description
The invention relates to a processing technology of an integrated shell of a high-pressure flow environment-friendly integrated electric fuel pump, which comprises the following steps: a. performing cold heading on the material to obtain an integrated shell rough blank; b. b, performing solid solution treatment on the integrated shell rough blank in the step a, putting the integrated shell rough blank into a high-temperature furnace, keeping the temperature at 1150-1250 ℃, preserving the heat for 1.5-2 h, and then putting the integrated shell rough blank into water for quick cooling; c. b, carrying out finish machining on the integrated shell rough blank subjected to solid solution in the step b, namely machining a fuel pump placing cavity and a fuel inlet and outlet channel on the integrated shell rough blank through a drilling machine and a grinding machine to obtain an integrated shell blank; d. performing shot blasting treatment on the integrated shell rough blank subjected to finish machining; e. activating the integrated shell body subjected to shot blasting treatment at the activation temperature of 200-220 ℃ for 1-1.5 h; f. performing non-metal element composite infiltration on the integrated shell blank subjected to activation in the step e, wherein the non-metal element is preferably nitrocarburizing, and can be selected according to different integrated shell materials, and the selection of the non-metal element can be realized without any creative labor after referring to the embodiment of the invention; g. keeping the temperature of the integrated shell blank subjected to the non-metal element composite infiltration in the step f for 1-1.5 h at the temperature of 300-350 ℃; h. putting the integrated shell blank subjected to heat preservation in the step g into a container for cooling, and simultaneously filling inert gas, wherein the inert gas is preferably nitrogen; i. removing oil from the integrated shell blank cooled in the step h by ultrasonic waves, coating aluminum tripolyphosphate epoxy antirust primer on the surface of the integrated shell blank, and drying for 6h to promote the surface of the integrated shell blank to form a primer film; the degreasing part can facilitate the formation of a primer film and the smoothness of the primer film after formation, and the thickness of the primer film is preferably 25-35 μm, of course, if the elasticity of the production cost is high, the thickness can be correspondingly increased, and the thickness can be changed according to the change of the design requirement; j. and (e) coating high-solid paint on the integrated shell blank with the primer film formed on the surface in the step (i), drying, forming a high-solid paint film on the surface of the integrated shell blank, and cleaning the surface of the integrated shell to obtain a finished product, wherein the thickness of the high-solid paint is 40-55 microns. The thickness of the high-solid paint and the thickness of the primer film can be changed according to design requirements.
After the integrated shell rough blank is subjected to solution treatment, the hardness and the stress strength of the integrated shell rough blank can be improved; after shot blasting, the surface of the integrated shell is activated, so that residual oil stains on the surface of the integrated shell and the surface of an activated material can be cleaned, and the non-metal infiltration effect is catalytically improved; the wear resistance and hardness of the integrated shell rough blank can be improved by the non-metallic element composite infiltration, the rolling and flowing of tank liquor are facilitated, the infiltration speed of the surface of the integrated shell can be improved, and the product deformation can be reduced; and g, putting the integrated shell blank subjected to heat preservation in the step g into a container for cooling, and simultaneously filling inert gas to improve the smoothness of the surface of the integrated shell, ensure the uniformity of the surface color of the integrated shell and facilitate the subsequent formation of a paint film. The anti-rust primer with the aluminum tripolyphosphate epoxy coated on the surface can protect the integrated shell from the process, and the aluminum tripolyphosphate in the anti-rust primer with the aluminum tripolyphosphate epoxy also has a chelating function; the arrangement of the primer paint film and the high-solid paint film can form a corrosion-resistant layer on the surface of the integrated shell, so that the corrosion-resistant paint film has a corrosion-resistant effect on one hand, and the surface hardness of the integrated shell is improved on the other hand.
Claims (6)
1. Processing technology of high-pressure flow environment-friendly integrated electric fuel pump integrated shell, and processing technology
Is characterized by comprising the following steps: a. performing cold heading on the material to obtain an integrated shell rough blank;
b. b, performing solid solution treatment on the integrated shell rough blank in the step a, putting the integrated shell rough blank into a high-temperature furnace, keeping the temperature at 1150-1250 ℃, preserving the heat for 1.5-2 h, and then putting the integrated shell rough blank into water for quick cooling;
c. b, carrying out finish machining on the integrated shell rough blank subjected to solid solution in the step b, namely machining a fuel pump placing cavity and a fuel inlet and outlet channel on the integrated shell rough blank through a drilling machine and a grinding machine to obtain an integrated shell blank;
d. performing shot blasting treatment on the integrated shell rough blank subjected to finish machining;
e. activating the integrated shell body subjected to shot blasting treatment at the activation temperature of 200-220 ℃ for 1-1.5 h;
f. c, carrying out non-metal element composite infiltration on the integrated shell blank activated in the step e;
g. keeping the temperature of the integrated shell blank subjected to the non-metal element composite infiltration in the step f for 1-1.5 h at the temperature of 300-350 ℃;
h. putting the integrated shell blank subjected to heat preservation in the step g into a container for cooling, and filling inert gas into the container;
i. removing oil from the integrated shell blank cooled in the step h by ultrasonic waves, coating aluminum tripolyphosphate epoxy antirust primer on the surface of the integrated shell blank, and drying for 6h to promote the surface of the integrated shell blank to form a primer film;
j. and (e) coating high-solid paint on the integrated shell blank with the primer film formed on the surface in the step (i), drying, forming a high-solid paint film on the surface of the integrated shell blank, and cleaning the surface of the integrated shell to obtain a finished product.
2. The high pressure flow environmentally friendly integrated electric fuel pump cartridge of claim 1
The processing technology of the body is characterized in that: and (f) nitrocarburizing is adopted as the non-metal element in the step f.
3. The processing technology of the high-pressure flow environment-friendly integrated electric fuel pump integrated shell according to claim 1 or 2, characterized in that: and h, taking nitrogen as inert gas in the step.
4. The processing technology of the high-pressure flow environment-friendly integrated electric fuel pump integrated shell according to claim 1 or 2, characterized in that: the thickness of the primer film in the step i is 25-35 mu m.
5. The process for machining the integrated housing of the high-pressure flow environment-friendly integrated electric fuel pump according to claim 3, wherein the process comprises the following steps: the thickness of the primer film in the step i is 25-35 mu m.
6. The processing technology of the integrated housing of the high-pressure flow environment-friendly integrated electric fuel pump as claimed in claim 1, 2 or 5, wherein: the thickness of the high-solid paint is 40-55 μm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910935002.2A CN110665773A (en) | 2019-09-29 | 2019-09-29 | Processing technology of high-pressure flow environment-friendly integrated electric fuel pump integrated shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910935002.2A CN110665773A (en) | 2019-09-29 | 2019-09-29 | Processing technology of high-pressure flow environment-friendly integrated electric fuel pump integrated shell |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110665773A true CN110665773A (en) | 2020-01-10 |
Family
ID=69080206
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910935002.2A Pending CN110665773A (en) | 2019-09-29 | 2019-09-29 | Processing technology of high-pressure flow environment-friendly integrated electric fuel pump integrated shell |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110665773A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103009011A (en) * | 2012-12-28 | 2013-04-03 | 贵州精立航太科技有限公司 | Processing method for stainless steel high-strength bolt |
| CN103173694A (en) * | 2011-12-22 | 2013-06-26 | 舟山市7412工厂 | High temperature resistance fastening piece and manufacture method thereof |
| CN105772370A (en) * | 2015-12-11 | 2016-07-20 | 浙江标盛阀门制造有限公司 | Strong anti-corrosion treatment technique for surface of carbon steel valve |
| CN108591453A (en) * | 2018-06-08 | 2018-09-28 | 绵阳安立机械有限公司 | One bulb rises formula plug and its processing technology |
| CN109972075A (en) * | 2019-04-30 | 2019-07-05 | 成都伍田机械技术有限责任公司 | A kind of motor-car valve body anticorrosion treatment technology |
-
2019
- 2019-09-29 CN CN201910935002.2A patent/CN110665773A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103173694A (en) * | 2011-12-22 | 2013-06-26 | 舟山市7412工厂 | High temperature resistance fastening piece and manufacture method thereof |
| CN103009011A (en) * | 2012-12-28 | 2013-04-03 | 贵州精立航太科技有限公司 | Processing method for stainless steel high-strength bolt |
| CN105772370A (en) * | 2015-12-11 | 2016-07-20 | 浙江标盛阀门制造有限公司 | Strong anti-corrosion treatment technique for surface of carbon steel valve |
| CN108591453A (en) * | 2018-06-08 | 2018-09-28 | 绵阳安立机械有限公司 | One bulb rises formula plug and its processing technology |
| CN109972075A (en) * | 2019-04-30 | 2019-07-05 | 成都伍田机械技术有限责任公司 | A kind of motor-car valve body anticorrosion treatment technology |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103623987B (en) | A kind of coating process of boats and ships | |
| CN103670333B (en) | Wellhead of water injection well high-pressure spray adding method thereof and chemicals dosing plant thereof | |
| CN101698189A (en) | Zinc-galvanizing and paint-spraying coating process for submerged boat carrier | |
| CN103741090A (en) | Spraying method of surface coatings of sink rolls and stabilizing rolls | |
| CN105239069A (en) | Automobile hub surface treatment process | |
| CN101724801B (en) | Comprehensive anticorrosive method of metal pipe fitting | |
| CN101709812A (en) | Metal flange coated with insulating ceramic coating and preparation method thereof | |
| CN101375032B (en) | Liquid cooling device in internal combustion engines and process for manufacturing same | |
| CN203991000U (en) | The spray equipment that can be used for interior gunning concrete carrier pipe | |
| CN110665773A (en) | Processing technology of high-pressure flow environment-friendly integrated electric fuel pump integrated shell | |
| CN114959543A (en) | Thermal spraying strengthening repair method for superficial defects of metal casting part | |
| CN102235261A (en) | Engine cylinder sleeve | |
| CN102251203A (en) | Technology of hot dip aluminium-plating and application thereof | |
| CN103836186A (en) | Ceramic thin film cast iron piston ring and manufacturing method thereof | |
| TWI510571B (en) | Coated metal shaped raw material | |
| US6789528B2 (en) | High pressure fuel supply device having plating layer and manufacturing method thereof | |
| CN205745708U (en) | A kind of high heat conduction plastic lining composite steel pipe | |
| JP2017025727A (en) | Fuel supply unit | |
| KR20190097248A (en) | Environmental resistance member, vanes, compressors and engines using the same | |
| CN112090713B (en) | Method for processing inner wall coating of stainless steel pipe | |
| CN105483560B (en) | Coal mine hydraulic supporting column bore area stainless steel protective coating and coating processes | |
| CN104736730B (en) | Improved bubble pump resistant to molten aluminum erosion | |
| CN204471707U (en) | The water cooling plant of stainless steel tube three-layer polypropylene anti-corrosion pipe | |
| CN102878360A (en) | Method for increasing steel-plastic cohesion for steel-framed plastic composite pipes | |
| TW202117093A (en) | Method for treating and phosphatizing metal board without acid |
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 | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20200110 |