CN1316060C - Process for preparing corrosion resistant coating of oil pipe composite materials - Google Patents
Process for preparing corrosion resistant coating of oil pipe composite materials Download PDFInfo
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- CN1316060C CN1316060C CNB2004100439481A CN200410043948A CN1316060C CN 1316060 C CN1316060 C CN 1316060C CN B2004100439481 A CNB2004100439481 A CN B2004100439481A CN 200410043948 A CN200410043948 A CN 200410043948A CN 1316060 C CN1316060 C CN 1316060C
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- oil pipe
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- plating bath
- coating
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- Electroplating And Plating Baths Therefor (AREA)
Abstract
The present invention discloses a method for preparing anticorrosion plating with an oil pipe composite material, which relates to a method for preparing anticorrosion plating. The present invention comprises the following steps: a. a plating liquid of inner high potential plating is prepared; b. the inner high potential plating is plated in a chemical mode on an oil pipe processed by the chemical plating Ni-P alloy anticorrosion treatment; c. a plating liquid of outer low potential plating is prepared; d. the outer low potential plating is plated in a chemical mode on the oil pipe processed by the step b so as to obtain the anticorrosion plating of the oil pipe composite material. The present invention can obtain the oil pipe composite material plating with an anode property (the potential of a surface electrode is smaller or equal to that of a base body or a secondary surface) on the surface of the oil pipe; the composite plating is favorable in wear resistance, and the hardness of the composite plating reaches HV400 to 600; the plating with the oil pipe composite material is even in thickness, and the thickness of the plating reaches 10 to 80 micrometers; the binding capacity of the composite plating is greater than or equal to 50N; the composite plating has excellent corrosion resistance for hydrochloric acid, sulfuric acid, phosphoric acid and hot caustic soda; the present invention has the advantages of simple technology, low cost and simple operation.
Description
Technical field:
The present invention relates to a kind of preparation method of corrosion protection coating, be specifically related to a kind of preparation method of oil pipe matrix material corrosion protection coating.
Background technology:
The chemical plating Mi-P alloy rotproofing is carried out on the oil pipe surface of using at present, played irreplaceable effect over a period to come for the corrosion that slows down oil pipe, but because its electropotential is apparently higher than the oil pipe body material, if therefore there is hole in coating surface, then can make Ni-P alloy layer and matrix constitute galvanic cell.This galvanic cell is made up of top layer " big negative electrode " and " primary anode " of matrix, therefore can form the accelerated corrosion sign until perforation at the galvanic cell place.Because the generation of the problems referred to above, requiring for chemical plating Mi-P alloy coating rot-resistant be " covering fully " (being the coating imporosity).From the situation of oil pipe self and the technological process of chemical plating Mi-P alloy, realize that the complete atresia of coating almost is impossible, even very meticulous of pre-treatment, thickness of coating reaches more than the 50 μ m, carries out the also suitable difficulty of aftertreatment.
Summary of the invention:
The present invention is directed to the problems referred to above, give full play to the solidity to corrosion potential of Ni-P alloy layer, carry out modification, a kind of preparation method of oil pipe matrix material corrosion protection coating is provided from coating itself.Technological process of the present invention is as follows: a, preparation internal layer noble potential coating plating bath, described plating bath is made up of following compositions: 25～35g/lNiSO
47H
2O, 29～43g/l NaH
2PO
2, 5～15g/l citric acid, 3～12g/l oxysuccinic acid and 10～20g/l lactic acid; B, will carry out electroless plating internal layer noble potential coating 1～4 hour through the antiseptic oil pipe of chemical plating Mi-P alloy; C, the outer low potential coating plating bath of preparation, described plating bath is made up of following compositions: 21～31g/l NiSO
47H
2O, 5～15g/l NaH
2PO
2, 7～17g/l quadrol, 5～20ppm stablizer, regulating the pH value is 7; D, will under 60～80 ℃ temperature, carry out the outer low potential coating of electroless plating through the oil pipe of b step process 1～4 hour, obtain oil pipe matrix material corrosion protection coating.The present invention prepares the composite deposite that the surface has anode character by the method for electroless plating on original Ni-P alloy basis, change this galvanic cell combination of top layer " big negative electrode " and matrix " primary anode ", to reach the purpose of slowing down tube corrosion.The present invention obtains to have the oil pipe composite deposit on anode character (surface electrode current potential≤matrix or inferior top layer) at the oil pipe surface energy, and this composite deposite abrasion resistance properties is good, and hardness reaches HV400～600; Oil pipe thickness of multiple plating good uniformity, thickness of coating reach 10～80 μ m; More than composite deposite bonding force 〉=50N; Hydrochloric acid, sulfuric acid, phosphoric acid, hot caustic soda are had excellent erosion resistance, and it has the advantage that technology is simple, cost is low, simple to operate.
Embodiment:
Embodiment one: present embodiment is achieved in that a, preparation internal layer noble potential coating plating bath, and described plating bath is made up of following compositions: 25～35g/l NiSO
47H
2O, 29～43g/l NaH
2PO
2, 5～15g/l citric acid, 3～12g/l oxysuccinic acid and 10～20g/l lactic acid; B, will carry out electroless plating internal layer noble potential coating 1～4 hour through the antiseptic oil pipe of chemical plating Mi-P alloy; C, the outer low potential coating plating bath of preparation, described plating bath is made up of following compositions: 21～31g/l NiSO
47H
2O, 5～15g/lNaH
2PO
2, 7～17g/l quadrol, 5～20ppm stablizer, regulating the pH value is 7; D, will under 60～80 ℃ temperature, carry out the outer low potential coating of electroless plating through the oil pipe of b step process 1～4 hour, obtain oil pipe matrix material corrosion protection coating.Described stablizer is sulphur urine or plumbic acetate.
Embodiment two: what present embodiment and embodiment one were different is that described internal layer noble potential coating plating bath is made up of following compositions: 30g/l NiSO
47H
2O, 35g/l NaH
2PO
2, 10g/l citric acid, 6g/l oxysuccinic acid and 15g/l lactic acid.Other steps are identical with embodiment one with processing parameter.
Embodiment three: what present embodiment and embodiment one were different is that described outer low potential coating plating bath is made up of following compositions: 25g/l NiSO
47H
2O, 10g/l NaH
2PO
2, 12g/l quadrol, 14ppm stablizer.Other steps are identical with embodiment one with processing parameter.
Embodiment four: present embodiment is achieved in that a, preparation internal layer noble potential coating plating bath, and described plating bath is made up of following compositions: 28g/l NiSO
47H
2O, 40g/l NaH
2PO
2, 12g/l citric acid, 8g/l oxysuccinic acid and 13g/l lactic acid; B, will carry out electroless plating internal layer noble potential coating 2 hours through the antiseptic oil pipe of chemical plating Mi-P alloy at normal temperatures; C, the outer low potential coating plating bath of preparation, described plating bath is made up of following compositions: 28g/l NiSO
47H
2O, 13g/l NaH
2PO
2, 15g/l quadrol, 10ppm stablizer, regulating the pH value is 7; D, will carry out the outer low potential coating of electroless plating through the oil pipe of b step process 3 hours under 70 ℃ temperature, obtaining thickness of coating is the oil pipe matrix material corrosion protection coating that 60 μ m, composite deposite bonding force 〉=50N, hardness reach HV500.
Claims (6)
1, the preparation method of oil pipe matrix material corrosion protection coating is characterized in that it is achieved in that a, preparation internal layer noble potential coating plating bath, and described plating bath is made up of following compositions: 25～35g/l NiSO
47H
2O, 29～43g/l NaH
2PO
2, 5～15g/l citric acid, 3～12g/l oxysuccinic acid and 10～20g/l lactic acid; B, will carry out electroless plating internal layer noble potential coating 1～4 hour through the antiseptic oil pipe of chemical plating Mi-P alloy; C, the outer low potential coating plating bath of preparation, described plating bath is made up of following compositions: 21～31g/l NiSO
47H
2O, 5～15g/l NaH
2PO
2, 7～17g/l quadrol, 5～20ppm stablizer, regulating the pH value is 7; D, will under 60～80 ℃ temperature, carry out the outer low potential coating of electroless plating through the oil pipe of b step process 1～4 hour, obtain oil pipe matrix material corrosion protection coating.
2, the preparation method of oil pipe matrix material corrosion protection coating according to claim 1 is characterized in that described stablizer is sulphur urine or plumbic acetate.
3, the preparation method of oil pipe matrix material corrosion protection coating according to claim 1 is characterized in that described internal layer noble potential coating plating bath is made up of following compositions: 30g/l NiSO
47H
2O, 35g/lNaH
2PO
2, 10g/l citric acid, 6g/l oxysuccinic acid and 15g/l lactic acid.
4, the preparation method of oil pipe matrix material corrosion protection coating according to claim 1 is characterized in that described internal layer noble potential coating plating bath is made up of following compositions: 28g/l NiSO
47H
2O, 40g/lNaH
2PO
2, 12g/l citric acid, 8g/l oxysuccinic acid and 13g/l lactic acid
5, the preparation method of oil pipe matrix material corrosion protection coating according to claim 1 and 2 is characterized in that described outer low potential coating plating bath is made up of following compositions: 25g/l NiSO
47H
2O, 10g/lNaH
2PO
2, 12g/l quadrol, 14ppm stablizer.
6, the preparation method of oil pipe matrix material corrosion protection coating according to claim 1 and 2 is characterized in that described outer low potential coating plating bath is made up of following compositions: 28g/l NiSO
47H
2O, 13g/lNaH
2PO
2, 15g/l quadrol, 10ppm stablizer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100439481A CN1316060C (en) | 2004-10-19 | 2004-10-19 | Process for preparing corrosion resistant coating of oil pipe composite materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2004100439481A CN1316060C (en) | 2004-10-19 | 2004-10-19 | Process for preparing corrosion resistant coating of oil pipe composite materials |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1621562A CN1621562A (en) | 2005-06-01 |
| CN1316060C true CN1316060C (en) | 2007-05-16 |
Family
ID=34763789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100439481A Expired - Fee Related CN1316060C (en) | 2004-10-19 | 2004-10-19 | Process for preparing corrosion resistant coating of oil pipe composite materials |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1316060C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101042044B (en) * | 2007-01-16 | 2011-01-05 | 湖南纳菲尔新材料科技股份有限公司 | Pumping rod or oil sucking pipe electroplating iron-nickel/tungsten alloy double-layer coating and surface processing technology |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003214780A (en) * | 2002-01-22 | 2003-07-30 | Hitachi Cable Ltd | Heat pipe |
| CN1477922A (en) * | 2002-04-09 | 2004-02-25 | ���ǵ�����ʽ���� | Alloy plating liquid for modular printed circuit board surface treatment |
-
2004
- 2004-10-19 CN CNB2004100439481A patent/CN1316060C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003214780A (en) * | 2002-01-22 | 2003-07-30 | Hitachi Cable Ltd | Heat pipe |
| CN1477922A (en) * | 2002-04-09 | 2004-02-25 | ���ǵ�����ʽ���� | Alloy plating liquid for modular printed circuit board surface treatment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1621562A (en) | 2005-06-01 |
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Granted publication date: 20070516 Termination date: 20101019 |