CN103361658A - Method for removing screw hole corrosion - Google Patents
Method for removing screw hole corrosion Download PDFInfo
- Publication number
- CN103361658A CN103361658A CN2013103217241A CN201310321724A CN103361658A CN 103361658 A CN103361658 A CN 103361658A CN 2013103217241 A CN2013103217241 A CN 2013103217241A CN 201310321724 A CN201310321724 A CN 201310321724A CN 103361658 A CN103361658 A CN 103361658A
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- China
- Prior art keywords
- screw
- mixed acid
- acid solution
- water
- screw hole
- 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.)
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Abstract
A method for removing screw hole corrosion is characterized by comprising following steps: step one, preparing a mixed acid solution; step two, preparing a cleaning solution; step three, injecting the mixed acid solution into a screw hole, and maintaining for 5 to 8 minutes; step four, absorbing out the mixed acid solution and then cleaning the screw hole with the cleaning solution; step five, cleaning the screw hole with clean water and then blow-drying. Screw hole corrosion is removed through the steps mentioned above. The method of removing screw hole corrosion not only can remove the screw hole corrosion, but also can guarantee that the material tissue is not changed and the screw is not damaged. It has been proved by metallographic examination that after corrosion removing according to the method, material tissue is not changed. Screw thread is examined by the thread plug gage and meets the corresponding requirement. The method has the advantages of simple raw materials, convenient operation, low cost and no need of special instrument and auxiliary equipment.
Description
Technical field
The present invention relates to a kind of derusting method, particularly a kind of removing method of screw corrosion.
Background technology
After the screw corrosion, the scheme that usually adopts the silk worker again to do over again, but sometimes can produce brokenly tooth unavoidably, and corrosion is when serious, a silk worker can't advance to do over again and reprocess; Taking after the soldering again processing to cause easily again that workpiece deformation causes scraps.
Summary of the invention
Technical problem to be solved by this invention provides a kind of removing method of screw corrosion, can remove easily the corrosion in the screw, and can not cause workpiece deformation.
For solving the problems of the technologies described above, the technical solution adopted in the present invention is: a kind of removing method of screw corrosion is characterized in that may further comprise the steps:
One, preparation mixed acid solution, component is the preparation mixed acid solution, component is H
2SO
4, HNO
3, HCl and H
2C
2O
4, water;
Two, the NaOH solution of preparation scavenging solution mass percent 10-15 ﹪, surplus is water;
Three, mixed acid solution is injected screw, keep 5-8min;
Four, clean screw with scavenging solution behind the sucking-off mixed acid solution;
Five, to dry up after the flushing with clean water;
Can remove the screw corrosion by above-mentioned steps.
Be through hole such as screw, the end with screw blocks first.
In the step 4, scavenging solution flushing at least twice.
In the step 5, flushing with clean water at least three times.
The water of obtain solution is pure water.
In the mixed acid solution, component is 3% wt98H
2SO
4, 1% wt98 HNO
3, 10% wt36HCl and 5%H
2C
2O
4, surplus is water.
In the mixed acid solution, component is 5% wt98H
2SO
4, 5% wt98 HNO
3, 17% wt36HCl and 25%H
2C
2O
4, surplus is water.
In the mixed acid solution, component is 4% wt98H
2SO
4, 3% wt98 HNO
3, 15% wt36HCl and 20%H
2C
2O
4, surplus is water.
In the mixed acid solution, component is 4% wt98H
2SO
4, 1% wt98 HNO
3, 17% wt36HCl and 25%H
2C
2O
4, surplus is water.
In the mixed acid solution, component is 5% wt98H
2SO
4, 5% wt98 HNO
3, 10% wt36HCl and 5%H
2C
2O
4, surplus is water.
The difficult point of screw rust cleaning is, the operating space is narrow and small, should remove the screw corrosion, guarantees that again material structure is constant.
The removing method of screw corrosion provided by the present invention can both can be removed the screw corrosion, can guarantee that again material structure is constant, and screw thread was without any damage.After the metallographic examination proof adopted the inventive method rust cleaning, any variation did not occur in material structure, met related request with threaded plug gauge check screw thread.The raw material that the inventive method adopts is simple, simple operation, need not special instrument and utility appliance, and is with low cost.
Embodiment
Embodiment 1:
A kind of removing method of screw corrosion may further comprise the steps:
One, preparation mixed acid solution, component is the wt98H of mass percent 3-5%
2SO
4, 1-5% wt98 HNO
3, 10 ~ 17% wt36HCl and 5-25%H
2C
2O
4, surplus is water;
Two, the NaOH solution of preparation scavenging solution mass percent 10-15 ﹪, surplus is water; Preferably, the water of obtain solution is pure water.
Three, mixed acid solution is injected screw, keep 5-8min; Be through hole such as screw, the end with screw blocks first.
Four, clean screw with scavenging solution behind the sucking-off mixed acid solution; Preferably, the scavenging solution flushing at least twice.
Five, to dry up after the flushing with clean water; Preferably, flushing with clean water is at least three times.
Can remove the screw corrosion by above-mentioned steps.
Embodiment 2:
On the basis of embodiment 1, further preferred, in the mixed acid solution, component is 3% wt98H
2SO
4, 1% wt98 HNO
3, 10% wt36HCl and 5%H
2C
2O
4, surplus is water.This proportioning is used for the corrosion of lighter degree.
Embodiment 3:
On the basis of embodiment 1, further preferred, in the mixed acid solution, component is 5% wt98H
2SO
4, 5% wt98 HNO
3, 17% wt36HCl and 25%H
2C
2O
4, surplus is water.This proportioning is used for the corrosion of heavier degree.
Embodiment 4:
On the basis of embodiment 1, further preferred, in the mixed acid solution, component is 4% wt98H
2SO
4, 3% wt98 HNO
3, 15% wt36HCl and 20%H
2C
2O
4, surplus is water.This proportioning is used for removing the corrosion of medium carbon steel workpiece.
Embodiment 5:
On the basis of embodiment 1, further preferred, in the mixed acid solution, component is 4% wt98H
2SO
4, 1% wt98 HNO
3, 17% wt36HCl and 25%H
2C
2O
4, surplus is water.This proportioning is used for removing the corrosion of high carbon steel workpiece.
Embodiment 6:
On the basis of embodiment 1, further preferred, in the mixed acid solution, component is 5% wt98H
2SO
4, 5% wt98 HNO
3, 10% wt36HCl and 5%H
2C
2O
4, surplus is water.This proportioning is used for removing the corrosion of soft steel workpiece.
Claims (10)
1. the removing method of a screw corrosion is characterized in that may further comprise the steps:
One, preparation mixed acid solution, component is H
2SO
4, HNO
3, HCl and H
2C
2O
4, water;
Two, the NaOH solution of preparation scavenging solution mass percent 10-15 ﹪;
Three, mixed acid solution is injected screw, keep 5-8min;
Four, clean screw with scavenging solution behind the sucking-off mixed acid solution;
Five, to dry up after the flushing with clean water;
Can remove the screw corrosion by above-mentioned steps.
2. the removing method of a kind of screw corrosion according to claim 1 is characterized in that: be through hole such as screw, the end with screw blocks first.
3. the removing method of a kind of screw corrosion according to claim 1 is characterized in that: in the step 4, and scavenging solution flushing at least twice.
4. the removing method of a kind of screw corrosion according to claim 1 is characterized in that: in the step 5, and flushing with clean water at least three times.
5. the removing method of a kind of screw corrosion according to claim 1, it is characterized in that: the water of obtain solution is pure water.
6. the removing method of a kind of screw corrosion according to claim 1, it is characterized in that: in the mixed acid solution, component is 3% H
2SO
4, 1% HNO
3, 10% HCl and 5%H
2C
2O
4, surplus is water.
7. the removing method of a kind of screw corrosion according to claim 1, it is characterized in that: in the mixed acid solution, component is 5% wt98H
2SO
4, 5% wt98 HNO
3, 17% wt36HCl and 25%H
2C
2O
4, surplus is water.
8. the removing method of a kind of screw corrosion according to claim 1, it is characterized in that: in the mixed acid solution, component is 4% wt98H
2SO
4, 3% wt98 HNO
3, 15% wt36HCl and 20%H
2C
2O
4, surplus is water.
9. the removing method of a kind of screw corrosion according to claim 1, it is characterized in that: in the mixed acid solution, component is 4% wt98H
2SO
4, 1% wt98 HNO
3, 17% wt36HCl and 25%H
2C
2O
4, surplus is water.
10. the removing method of a kind of screw corrosion according to claim 1, it is characterized in that: in the mixed acid solution, component is 5% wt98H
2SO
4, 5% wt98 HNO
3, 10% wt36HCl and 5%H
2C
2O
4, surplus is water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310321724.1A CN103361658B (en) | 2013-07-29 | 2013-07-29 | The removing method of screw corrosion |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310321724.1A CN103361658B (en) | 2013-07-29 | 2013-07-29 | The removing method of screw corrosion |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103361658A true CN103361658A (en) | 2013-10-23 |
| CN103361658B CN103361658B (en) | 2015-10-07 |
Family
ID=49363890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310321724.1A Active CN103361658B (en) | 2013-07-29 | 2013-07-29 | The removing method of screw corrosion |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103361658B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106498414A (en) * | 2016-10-13 | 2017-03-15 | 广西大学 | A kind of derusting method of screw |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5339934A (en) * | 1976-09-24 | 1978-04-12 | Nippon Soda Co | Method of chemical surface treatment of iron and steel |
| JPS53102231A (en) * | 1977-02-18 | 1978-09-06 | Furukawa Electric Co Ltd:The | Pickling bath for magnesium and magnesium alloy |
| CN101353793A (en) * | 2007-07-26 | 2009-01-28 | 江苏海迅实业集团股份有限公司 | Copper alloy antirust agent |
| CN101654785A (en) * | 2009-07-03 | 2010-02-24 | 江苏海迅实业集团股份有限公司 | Steel surface compact oxide layer scavenging agent |
| CN101892489A (en) * | 2010-07-23 | 2010-11-24 | 广州唯普电力科技有限公司 | Cleaning agent for flue dust scale on surface of gas heat exchanger of gas desulfurization system and preparation method thereof |
| CN103184459A (en) * | 2013-04-12 | 2013-07-03 | 太原钢铁(集团)有限公司 | Pickling solution capable of removing hot-rolled corrosion-resisting alloy oxide skin and pickling method thereof |
-
2013
- 2013-07-29 CN CN201310321724.1A patent/CN103361658B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5339934A (en) * | 1976-09-24 | 1978-04-12 | Nippon Soda Co | Method of chemical surface treatment of iron and steel |
| JPS53102231A (en) * | 1977-02-18 | 1978-09-06 | Furukawa Electric Co Ltd:The | Pickling bath for magnesium and magnesium alloy |
| CN101353793A (en) * | 2007-07-26 | 2009-01-28 | 江苏海迅实业集团股份有限公司 | Copper alloy antirust agent |
| CN101654785A (en) * | 2009-07-03 | 2010-02-24 | 江苏海迅实业集团股份有限公司 | Steel surface compact oxide layer scavenging agent |
| CN101892489A (en) * | 2010-07-23 | 2010-11-24 | 广州唯普电力科技有限公司 | Cleaning agent for flue dust scale on surface of gas heat exchanger of gas desulfurization system and preparation method thereof |
| CN103184459A (en) * | 2013-04-12 | 2013-07-03 | 太原钢铁(集团)有限公司 | Pickling solution capable of removing hot-rolled corrosion-resisting alloy oxide skin and pickling method thereof |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106498414A (en) * | 2016-10-13 | 2017-03-15 | 广西大学 | A kind of derusting method of screw |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103361658B (en) | 2015-10-07 |
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