CN107747111A - A kind of spring cadmium plating processing technology - Google Patents
A kind of spring cadmium plating processing technology Download PDFInfo
- Publication number
- CN107747111A CN107747111A CN201710802680.2A CN201710802680A CN107747111A CN 107747111 A CN107747111 A CN 107747111A CN 201710802680 A CN201710802680 A CN 201710802680A CN 107747111 A CN107747111 A CN 107747111A
- Authority
- CN
- China
- Prior art keywords
- spring
- processing technology
- cadmium plating
- cadmium
- plating processing
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- 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.)
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Classifications
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D3/00—Electroplating: Baths therefor
- C25D3/02—Electroplating: Baths therefor from solutions
- C25D3/26—Electroplating: Baths therefor from solutions of cadmium
-
- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
- C25D5/34—Pretreatment of metallic surfaces to be electroplated
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Springs (AREA)
- Electroplating And Plating Baths Therefor (AREA)
- Electroplating Methods And Accessories (AREA)
Abstract
The invention provides a kind of spring cadmium plating processing technology, described cadmium plating processing technology comprises the following steps：a）Treatment before plating, b）Plate Cadmium treated, c）Dehydrogenation.Present invention is disclosed a kind of spring cadmium plating processing technology, the processing technology not only preferably ensure that the tensile strength of extension spring, and efficiently solve the problems, such as extension spring because it is close around position and spring inner ring without coating caused by corrosion.
Description
Technical field
The present invention relates to a kind of processing technology, and in particular to a kind of spring cadmium plating processing technology, belongs to spring technology neck
Domain.
Background technology
Spring is a kind of using the elastic machine components come work, and it has as a critical elements in industrial system
Very big usage amount, and species is various.Although Spring Industry is a small industry among whole manufacturing industry, it rises
The effect arrived is extremely important.The industrial manufacturing industry of country, auto industry will accelerate development, based on one of part, parts
Spring Industry just more needs the advanced phase of a development, just adapts to the fast development of national whole industry.In addition, spring
The needs and matched host machine performance that the expansion of product scale kind, the raising of quality level and machinery Replacement are regenerated improve
Needs, therefore, the development of whole National Industrial, spring product plays an important role.
There is corrosion using easy for a long time under high salt high humidity environment in spring, therefore generally to carry out electroplating processes to spring
To reach the purpose of anti-corrosion.Extension spring is close in its natural state to be brought into close contact around position, and it is in hollow tubular structures to make spring；
In the electroplating process of extension spring, due to limited by the structure, plating solution and power line can not cover it is close around position and inner surface,
Cause coating coverage rate low so that corrosion easily occurs in use in spring.In order to overcome above-mentioned plating defects, generally adopt
Method is that extension spring is pulled open into a small distance in plating, make plating solution and the accessible extension spring of power line it is close around
Position and inner surface, to ensure electroplating quality.However, the above method is difficult often the amount of tension of restrained stretching spring, once bullet
The amount of tension of spring is excessive, and the pulling force of spring can reduce after plating, and then reduces the performance of extension spring and fatigue behaviour.
The content of the invention
For the demand, the invention provides a kind of spring cadmium plating processing technology, the processing technology is not only preferably
The tensile strength of extension spring is ensure that, and efficiently solves extension spring and is led because close around position and spring inner ring without coating
The corrosion problem of cause.
The present invention is a kind of spring cadmium plating processing technology, and described cadmium plating processing technology comprises the following steps：a）Plating
Pre-treatment, b）Plate Cadmium treated, c）Dehydrogenation.
In a preferred embodiment of the present invention, described step a）In, treatment before plating comprises the following steps：1）Using drawing
The special Electropolating hangers clamping spring of spring is stretched, by the 120%~130% of spring elongation to raw footage；2）Chemistry is placed the spring in remove
In oil solution, the oil removing 20min at 80 DEG C；3）Place the spring in soda acid mixed liquor, the loose skin 70min at 110 DEG C；4）By bullet
Spring is placed in acid mixed solution, activates 10min at room temperature.
In a preferred embodiment of the present invention, the compositing formula of described electrochemical deoiling solution is：Tertiary sodium phosphate 40g/L,
Sodium hydroxide 70g/L, sodium carbonate 40g/L, sodium metasilicate 20g/L.
In a preferred embodiment of the present invention, the compositing formula of described soda acid mixed liquor is：Natrium nitrosum 160g/L, hydrogen
Sodium oxide molybdena 500g/L.
In a preferred embodiment of the present invention, the compositing formula of described acid mixed solution is：Hydrochloric acid 60mL/L, six first
Urotropine 45g/L.
In a preferred embodiment of the present invention, described step b）In, plating Cadmium treated uses cadmium plating from ammonium chloride bath solution, should
The compositing formula of cadmium plating from ammonium chloride bath solution is：Caddy 45g/L, ammonium chloride 240g/L, sodium chloride 35g/L, thiocarbamide 9g/L.
In a preferred embodiment of the present invention, described step b）In, cadmium plating handling process parameter is：Dash current is close
Spend 1.0A/dm2, cadmium plating time 30min.
In a preferred embodiment of the present invention, described step c）In, the process conditions of dehydrogenation are：Temperature 180~
200 DEG C, soaking time 4h.
Present invention is disclosed a kind of spring cadmium plating processing technology, the processing technology not only preferably ensure that extension spring
Tensile strength, and efficiently solve the problems, such as extension spring because it is close around position and spring inner ring without coating caused by corrosion.
Brief description of the drawings
The present invention is further detailed explanation with reference to the accompanying drawings and detailed description：
Fig. 1 is the process step diagram of spring cadmium plating processing technology of the embodiment of the present invention.
Embodiment
Presently preferred embodiments of the present invention is described in detail below in conjunction with the accompanying drawings, so that advantages and features of the invention energy
It is easier to be readily appreciated by one skilled in the art, apparent is clearly defined so as to be made to protection scope of the present invention.
Fig. 1 is the process step diagram of spring cadmium plating processing technology of the embodiment of the present invention；The cadmium plating processing technology includes
Following steps：a）Treatment before plating, b）Plate Cadmium treated, c）Dehydrogenation.
Embodiment 1
Specific processing method is as follows：
a）Treatment before plating, specific process are：The special Electropolating hangers clamping spring of extension spring is first used, by spring elongation extremely
The 120% of raw footage；Then extension spring is placed in electrochemical deoiling solution, the oil removing 20min at 80 DEG C, wherein, electrochemical deoiling
The compositing formula of solution is：Tertiary sodium phosphate 40g/L, sodium hydroxide 70g/L, sodium carbonate 40g/L, sodium metasilicate 20g/L；It will then draw
Stretch spring to be placed in soda acid mixed liquor, the loose skin 70min at 110 DEG C, wherein, the compositing formula of soda acid mixed liquor is：Nitrous acid
Sodium 160g/L, sodium hydroxide 500g/L；Finally extension spring is placed in acid mixed solution, activates 10min at room temperature, its
In, the compositing formula of acid mixed solution is：Hydrochloric acid 60mL/L, hexamethylenetetramine 45g/L.
b）Cadmium treated is plated, the extension spring after treatment before plating is placed in the cadmium plating from ammonium chloride bath solution prepared, with 1.0A/
dm2Dash current density, electroplate 30min, wherein, the compositing formula of cadmium plating from ammonium chloride bath solution is：Caddy 45g/L, chlorination
Ammonium 240g/L, sodium chloride 35g/L, thiocarbamide 9g/L.
c）Dehydrogenation, first the extension spring after plating is disassembled from special Electropolating hangers, returns to nature shape
State, then place the spring in 180 DEG C of heating furnace, be incubated 4h.
Embodiment 2
Specific processing method is as follows：
a）Treatment before plating, specific process are：The special Electropolating hangers clamping spring of extension spring is first used, by spring elongation extremely
The 125% of raw footage；Then extension spring is placed in electrochemical deoiling solution, the oil removing 20min at 80 DEG C, wherein, electrochemical deoiling
The compositing formula of solution is：Tertiary sodium phosphate 40g/L, sodium hydroxide 70g/L, sodium carbonate 40g/L, sodium metasilicate 20g/L；It will then draw
Stretch spring to be placed in soda acid mixed liquor, the loose skin 70min at 110 DEG C, wherein, the compositing formula of soda acid mixed liquor is：Nitrous acid
Sodium 160g/L, sodium hydroxide 500g/L；Finally extension spring is placed in acid mixed solution, activates 10min at room temperature, its
In, the compositing formula of acid mixed solution is：Hydrochloric acid 60mL/L, hexamethylenetetramine 45g/L.
b）Cadmium treated is plated, the extension spring after treatment before plating is placed in the cadmium plating from ammonium chloride bath solution prepared, with 1.0A/
dm2Dash current density, electroplate 30min, wherein, the compositing formula of cadmium plating from ammonium chloride bath solution is：Caddy 45g/L, chlorination
Ammonium 240g/L, sodium chloride 35g/L, thiocarbamide 9g/L.
c）Dehydrogenation, first the extension spring after plating is disassembled from special Electropolating hangers, returns to nature shape
State, then place the spring in 190 DEG C of heating furnace, be incubated 4h.
Embodiment 3
Specific processing method is as follows：
a）Treatment before plating, specific process are：The special Electropolating hangers clamping spring of extension spring is first used, by spring elongation extremely
The 130% of raw footage；Then extension spring is placed in electrochemical deoiling solution, the oil removing 20min at 80 DEG C, wherein, electrochemical deoiling
The compositing formula of solution is：Tertiary sodium phosphate 40g/L, sodium hydroxide 70g/L, sodium carbonate 40g/L, sodium metasilicate 20g/L；It will then draw
Stretch spring to be placed in soda acid mixed liquor, the loose skin 70min at 110 DEG C, wherein, the compositing formula of soda acid mixed liquor is：Nitrous acid
Sodium 160g/L, sodium hydroxide 500g/L；Finally extension spring is placed in acid mixed solution, activates 10min at room temperature, its
In, the compositing formula of acid mixed solution is：Hydrochloric acid 60mL/L, hexamethylenetetramine 45g/L.
b）Cadmium treated is plated, the extension spring after treatment before plating is placed in the cadmium plating from ammonium chloride bath solution prepared, with 1.0A/
dm2Dash current density, electroplate 30min, wherein, the compositing formula of cadmium plating from ammonium chloride bath solution is：Caddy 45g/L, chlorination
Ammonium 240g/L, sodium chloride 35g/L, thiocarbamide 9g/L.
c）Dehydrogenation, first the extension spring after plating is disassembled from special Electropolating hangers, returns to nature shape
State, then place the spring in 200 DEG C of heating furnace, be incubated 4h.
Present invention is disclosed a kind of spring cadmium plating processing technology, the processing technology not only preferably ensure that extension spring
Tensile strength, and efficiently solve the problems, such as extension spring because it is close around position and spring inner ring without coating caused by corrosion.
The foregoing is only a specific embodiment of the invention, but protection scope of the present invention is not limited thereto, any
Those skilled in the art disclosed herein technical scope in, can without the change that creative work is expected or
Replace, should all be included within the scope of the present invention.Therefore, protection scope of the present invention should be limited with claims
Fixed protection domain is defined.
Claims (8)
1. a kind of spring cadmium plating processing technology, it is characterised in that described cadmium plating processing technology comprises the following steps：a）Plating
Pre-treatment, b）Plate Cadmium treated, c）Dehydrogenation.
2. spring cadmium plating processing technology according to claim 1, it is characterised in that described step a）In, locate before plating
Reason comprises the following steps：1）Using the special Electropolating hangers clamping spring of extension spring, by the 120% of spring elongation to raw footage~
130%；2）Place the spring in electrochemical deoiling solution, the oil removing 20min at 80 DEG C；3）Place the spring in soda acid mixed liquor,
Loose skin 70min at 110 DEG C；4）Place the spring in acid mixed solution, activate 10min at room temperature.
3. spring cadmium plating processing technology according to claim 2, it is characterised in that the group of described electrochemical deoiling solution
It is into formula：Tertiary sodium phosphate 40g/L, sodium hydroxide 70g/L, sodium carbonate 40g/L, sodium metasilicate 20g/L.
4. spring cadmium plating processing technology according to claim 2, it is characterised in that the composition of described soda acid mixed liquor
It is formulated and is：Natrium nitrosum 160g/L, sodium hydroxide 500g/L.
5. spring cadmium plating processing technology according to claim 2, it is characterised in that the composition of described acid mixed solution
It is formulated and is：Hydrochloric acid 60mL/L, hexamethylenetetramine 45g/L.
6. spring cadmium plating processing technology according to claim 1, it is characterised in that described step b）In, at cadmium plating
Reason uses cadmium plating from ammonium chloride bath solution, and the compositing formula of the cadmium plating from ammonium chloride bath solution is：Caddy 45g/L, ammonium chloride 240g/L, chlorine
Change sodium 35g/L, thiocarbamide 9g/L.
7. spring cadmium plating processing technology according to claim 1, it is characterised in that described step b）In, at cadmium plating
Managing technological parameter is：Dash current density 1.0A/dm2, cadmium plating time 30min.
8. spring cadmium plating processing technology according to claim 1, it is characterised in that described step c）In, at dehydrogenation
The process conditions of reason are：180~200 DEG C of temperature, soaking time 4h.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710802680.2A CN107747111A (en) | 2017-09-08 | 2017-09-08 | A kind of spring cadmium plating processing technology |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710802680.2A CN107747111A (en) | 2017-09-08 | 2017-09-08 | A kind of spring cadmium plating processing technology |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107747111A true CN107747111A (en) | 2018-03-02 |
Family
ID=61255592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710802680.2A Pending CN107747111A (en) | 2017-09-08 | 2017-09-08 | A kind of spring cadmium plating processing technology |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021084271A1 (en) | 2019-10-31 | 2021-05-06 | Armadillo Metal Coatings Ltd | Metallic coated substrates |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942681A (en) * | 2010-06-28 | 2011-01-12 | 重庆长安工业(集团)有限责任公司 | Process for plating cadmium on shaped steel part with deep/blind hole |
| CN102383153A (en) * | 2011-10-28 | 2012-03-21 | 北京科技大学 | Preparation method of electroplated cadmium coating for metalwork |
| CN104451799A (en) * | 2014-11-29 | 2015-03-25 | 沈阳飞机工业（集团）有限公司 | Processing technology for small-diameter quenched spring |
| CN105274585A (en) * | 2015-11-27 | 2016-01-27 | 沈阳飞机工业（集团）有限公司 | Cadmium electroplating method for cadmium plating layer with high thickness |
-
2017
- 2017-09-08 CN CN201710802680.2A patent/CN107747111A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101942681A (en) * | 2010-06-28 | 2011-01-12 | 重庆长安工业(集团)有限责任公司 | Process for plating cadmium on shaped steel part with deep/blind hole |
| CN102383153A (en) * | 2011-10-28 | 2012-03-21 | 北京科技大学 | Preparation method of electroplated cadmium coating for metalwork |
| CN104451799A (en) * | 2014-11-29 | 2015-03-25 | 沈阳飞机工业（集团）有限公司 | Processing technology for small-diameter quenched spring |
| CN105274585A (en) * | 2015-11-27 | 2016-01-27 | 沈阳飞机工业（集团）有限公司 | Cadmium electroplating method for cadmium plating layer with high thickness |
Non-Patent Citations (2)
| Title |
|---|
| 张允诚 等: "《电镀手册》", 31 January 2007, 国防工业出版社 * |
| 方景礼著: "《电镀添加剂理论与应用》", 30 April 2006, 国防工业出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021084271A1 (en) | 2019-10-31 | 2021-05-06 | Armadillo Metal Coatings Ltd | Metallic coated substrates |
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Application publication date: 20180302 |
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