CN107326345A - Charge valve spool face handling process - Google Patents
Charge valve spool face handling process Download PDFInfo
- Publication number
- CN107326345A CN107326345A CN201710415340.4A CN201710415340A CN107326345A CN 107326345 A CN107326345 A CN 107326345A CN 201710415340 A CN201710415340 A CN 201710415340A CN 107326345 A CN107326345 A CN 107326345A
- Authority
- CN
- China
- Prior art keywords
- valve element
- nickel plating
- handling process
- chemical nickel
- plating
- 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.)
- Withdrawn
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Classifications
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1675—Process conditions
- C23C18/168—Control of temperature, e.g. temperature of bath, substrate
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/1601—Process or apparatus
- C23C18/1633—Process of electroless plating
- C23C18/1675—Process conditions
- C23C18/1683—Control of electrolyte composition, e.g. measurement, adjustment
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/18—Pretreatment of the material to be coated
- C23C18/1803—Pretreatment of the material to be coated of metallic material surfaces or of a non-specific material surfaces
-
- 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
- C23C18/00—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
- C23C18/16—Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
- C23C18/31—Coating with metals
- C23C18/32—Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
Landscapes
- Chemical & Material Sciences (AREA)
- General Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Electrochemistry (AREA)
- Chemically Coating (AREA)
Abstract
The present invention relates to charge valve spool face handling process, comprise the following steps：1）Decontamination processing：Valve element is immersed in detergent；2）Dried after being rinsed well with clear water；3）Preheating：The pre-heat treatment is carried out to valve element；4）Chemical nickel plating：Valve element is immersed chemical nickel plating processing is carried out in plating solution；5）Valve element after chemical nickel plating is handled, which is put into flowing cool water, to be rinsed well；6）Drying：Dry valve element.The beneficial effects of the invention are as follows：The process for optimizing chemical nickel plating, it is ensured that processing back valve core has enough hardness and marresistance energy.
Description
Technical field
The present invention relates to metal surface treatment process, more particularly to charge valve spool face handling process.
Background technology
Valve element is the opening and closing element of charge valve, charge valve by driving Spool rotating to realize connection to medium and block,
During this, produced between valve element meeting and valve seat often containing grit things such as metals in larger frictional force, medium, with spool table
Valve element can be scratched after the contact of face, the sealing of spool face and valve seat can be had a strong impact on, so improving the hardness of spool face and resistance to
Scratch resistance most important, at present frequently with the method for chemical nickel plating, but Chang Yinwei pre-processes not in place, bath temperature and pH value
It is bad Deng control, cause the performance of coating after processing not reach requirement.
The content of the invention
It is an object of the invention to overcome the deficiencies of the prior art and provide a kind of charge valve spool face handling process.
The purpose of the present invention is achieved through the following technical solutions：Charge valve spool face handling process, including
Following steps：
1）Decontamination processing：Valve element is immersed in detergent, the time is 20 ~ 30 minutes；
2）Dried after being rinsed well with clear water；
3）Preheating：The pre-heat treatment is carried out to valve element, temperature is 80 ~ 90 DEG C, and the time is 10 ~ 15 minutes；
4）Chemical nickel plating：Valve element is immersed chemical nickel plating processing is carried out in plating solution, the temperature of plating solution is 80 ~ 90 DEG C, the PH of plating solution
It is worth for 4.5 ~ 5, Ni in plating solution2+Content is 25 ~ 30g/L；
5）Valve element after chemical nickel plating is handled, which is put into flowing cool water, to be rinsed well；
6）Drying：Valve element is dried at a temperature of 90 ~ 100 DEG C, drying time is 40 ~ 50 minutes.
Preferably, in step 1）In, described detergent is acidic activator.
Preferably, in step 4）In, described plating solution is nickelous sulfate plating liquid.
Preferably, in step 4）In, described nickel plating layer thick is 60 ~ 70 μm.
Preferably, in step 4）In, the described Nickel Plating Treatment time is 6 ~ 7 hours.
Compared in prior art, the present invention has advantages below：Increase decontamination processing before electroless nickel step and pre-
Heat treatment step, and strictly control temperature, pH value and the Ni of plating solution2+Content, nickel-plated quality is more preferable, it is ensured that workpiece surface has foot
Enough hardness and marresistance energy.
Embodiment
The present invention will be further described below, but protection scope of the present invention be not limited to it is as described below.
Embodiment 1
1）Decontamination processing：By the trade mark in Q235A valve element immersion detergent, the time is 20 minutes, the grease on remover surface,
The foreign matter such as oxide and rust；
2）Dried after being rinsed well with clear water；
3）Preheating：The pre-heat treatment is carried out to valve element, temperature is 80 DEG C, and the time is 10 minutes, it is ensured that the temperature one of valve element and plating solution
Cause, prevent temperature change from influenceing the quality of nickel plating；
4）Chemical nickel plating：Valve element is immersed chemical nickel plating processing is carried out in plating solution, the temperature of plating solution is 80 DEG C, and pH value is 4.5, plating
Ni in liquid2+Content is 25g/L；
5）Valve element after chemical nickel plating is handled, which is put into flowing cool water, to be rinsed well；
6）Drying：Valve element is dried at a temperature of 90 DEG C, drying time is 40 minutes, that is, obtains the embodiment of the present invention 1 by surface
The valve element of processing, the hardness of spool face is HRC55 ~ 58, up-to-standard.
Embodiment 2
1）Decontamination processing：By the trade mark in 20# valve element immersion detergent, the time is 25 minutes, grease, the oxygen on remover surface
The foreign matter such as compound and rust；
2）Dried after being rinsed well with clear water；
3）Preheating：The pre-heat treatment is carried out to valve element, temperature is 85 DEG C, and the time is 13 minutes, it is ensured that the temperature one of valve element and plating solution
Cause, prevent temperature change from influenceing the quality of nickel plating；
4）Chemical nickel plating：Valve element is immersed chemical nickel plating processing is carried out in plating solution, the temperature of plating solution is 85 DEG C, and pH value is 4.8,
Ni in plating solution2+Content is 28g/L；
5）Valve element after chemical nickel plating is handled, which is put into flowing cool water, to be rinsed well；
6）Drying：Valve element is dried at a temperature of 95 DEG C, drying time is 45 minutes, that is, obtains the embodiment of the present invention 2 by surface
The valve element of processing, the hardness of spool face is HRC58 ~ 61, up-to-standard.
Embodiment 3
1）Decontamination processing：Valve element is immersed in detergent, the time is 30 minutes, grease, oxide and the corrosion on remover surface
The foreign matters such as thing；
2）Dried after being rinsed well with clear water；
3）Preheating：The pre-heat treatment is carried out to valve element, temperature is 90 DEG C, and the time is 15 minutes, it is ensured that the temperature one of valve element and plating solution
Cause, prevent temperature change from influenceing the quality of nickel plating；
4）Chemical nickel plating：Valve element is immersed chemical nickel plating processing is carried out in plating solution, the temperature of plating solution is 90 DEG C, and pH value is 5, plating
Ni in liquid2+Content is 30g/L；
5）Valve element after chemical nickel plating is handled, which is put into flowing cool water, to be rinsed well；
6）Drying：Valve element is dried at a temperature of 100 DEG C, drying time is 50 minutes, that is, obtains the embodiment of the present invention 3 by surface
The valve element of processing, the hardness of spool face is HRC61 ~ 64, up-to-standard.
The present invention increases decontamination processing and the pre-heat treatment process before electroless nickel step, employs dirt-removing power stronger
Acidic activator, the foreign matter such as grease, oxide and the rust on thorough remover surface, and strictly being controlled in Ni-Speed
Temperature, pH value and the Ni of plating solution2+Content, nickel-plated quality is more preferable, it is ensured that workpiece surface has enough hardness and marresistance energy.
Claims (5)
1. charge valve spool face handling process, it is characterised in that comprise the following steps：
1）Decontamination processing：Valve element is immersed in detergent, the time is 20 ~ 30 minutes；
2）Dried after being rinsed well with clear water；
3）Preheating：The pre-heat treatment is carried out to valve element, temperature is 80 ~ 90 DEG C, and the time is 10 ~ 15 minutes；
4）Chemical nickel plating：Valve element is immersed chemical nickel plating processing is carried out in plating solution, the temperature of plating solution is 80 ~ 90 DEG C, the PH of plating solution
It is worth for 4.5 ~ 5, Ni in plating solution2+Content is 25 ~ 30g/L；
5）Valve element after chemical nickel plating is handled, which is put into flowing cool water, to be rinsed well；
6）Drying：Valve element is dried at a temperature of 90 ~ 100 DEG C, drying time is 40 ~ 50 minutes.
2. charge valve according to claim 1 spool face handling process, it is characterised in that：In step 1）In, it is described
Detergent be acidic activator.
3. charge valve according to claim 1 or 2 spool face handling process, it is characterised in that：In step 4）In, institute
The plating solution stated is nickelous sulfate plating liquid.
4. charge valve according to claim 1 or 2 spool face handling process, it is characterised in that：In step 4）In, institute
The nickel plating layer thick stated is 60 ~ 70 μm.
5. charge valve according to claim 4 spool face handling process, it is characterised in that：In step 4）In, it is described
The Nickel Plating Treatment time be 6 ~ 7 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710415340.4A CN107326345A (en) | 2017-06-05 | 2017-06-05 | Charge valve spool face handling process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710415340.4A CN107326345A (en) | 2017-06-05 | 2017-06-05 | Charge valve spool face handling process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107326345A true CN107326345A (en) | 2017-11-07 |
Family
ID=60194605
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710415340.4A Withdrawn CN107326345A (en) | 2017-06-05 | 2017-06-05 | Charge valve spool face handling process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107326345A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112091180A (en) * | 2020-08-27 | 2020-12-18 | 宁国市四方精工机械有限公司 | Manufacturing method of high-strength main steam valve |
-
2017
- 2017-06-05 CN CN201710415340.4A patent/CN107326345A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112091180A (en) * | 2020-08-27 | 2020-12-18 | 宁国市四方精工机械有限公司 | Manufacturing method of high-strength main steam valve |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20171107 |