CN104451677A - Method for plating titanium alloy oil well pipe coupling with copper-tin alloy - Google Patents
Method for plating titanium alloy oil well pipe coupling with copper-tin alloy Download PDFInfo
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- CN104451677A CN104451677A CN201410703347.2A CN201410703347A CN104451677A CN 104451677 A CN104451677 A CN 104451677A CN 201410703347 A CN201410703347 A CN 201410703347A CN 104451677 A CN104451677 A CN 104451677A
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Abstract
The invention relates to a method for plating a titanium alloy oil well pipe coupling with a copper-tin alloy and can effectively solve problems of the poor binding force and the poor abrasion resistance of coatings of titanium alloy oil well pipe couplings. According to the technical scheme, the method comprises steps as follows: 1) alkaline degreasing; 2) washing with water; 3) acid pickling; 4) washing with flowing clear water; 5) activation; 6) washing with flowing clear water again; 7) chemical nickel-plating; 8) flushing; 9) copper-tin alloy plating; 10) flushing and drying. Surface treatment is performed on the threaded surface of the titanium alloy oil well pipe coupling with the copper-tin alloy plating method, a copper-tin alloy coating has characteristics of the proper hardness and the high abrasion resistance, the abrasion resistance and the anti-galling performance of threads of the oil well pipe coupling are improved, the surface of the titanium alloy oil well pipe coupling are plated with the copper-tin alloy coating which is larger in binding force and has the high abrasion resistance, the copper-tin alloy coating which has the high binding force and the high abrasion resistance with a titanium alloy substrate is obtained, and the method for plating the titanium alloy oil well pipe coupling with the copper-tin alloy is an innovation.
Description
Technical field
The present invention relates to titanium alloy surface processing technology field, particularly a kind of titanium alloy oil well pipe box cupling bronze (copper-tin alloy) electroplating method.
Background technology
Along with the degree of depth of oil mining constantly increases, the temperature and pressure of fluid raises, for oil well pipe material and technical requirements increasingly stringent.Further, in oil and gas development process, many containing corrosive mediums such as a certain amount of Cl-, H2S and CO2 in associated gas.These corrosive mediums cause massive losses to the exploitation of the corrosion of oil well pipe to oil gas.Because titanium alloy has high specific strength, high ratio modulus, the series of advantages such as corrosion-resistant, the application in ocean and continent oil-gas mining is more and more extensive.
But the hardness of titanium alloy is lower, wear resistance is poor, the oil pipe thread surface in upper shackle process connected with thread forms is easy to thread gluing damage phenomenon occurs, and brings certain potential safety hazard.And titanium alloy chemically reactive is higher, surface very easily forms passive film.Due to the existence of passive film, cause the bonding force of coating and titanium alloy substrate poor, oil well pipe box cupling coating in upper shackle process easily comes off.Therefore, the improvement of titanium alloy oil well pipe box cupling is the problem needing solution at present badly.
Summary of the invention
For above-mentioned situation, for solving the defect of prior art, the object of the present invention is just to provide a kind of titanium alloy oil well pipe box cupling bronze (copper-tin alloy) electroplating method, the problem effectively can solve titanium alloy oil well pipe box cupling binding force of cladding material, wearing no resistance.
The technical scheme that the present invention solves comprises the following steps: 1) electrochemical deoiling; 2) wash; 3) pickling; 4) flow clean water; 5) activate; 6) flow clean water again; 7) chemical nickel plating; 8) rinse; 9) bronze (copper-tin alloy) electroplating; 10) oven dry is rinsed.
The present invention adopts the method for bronze (copper-tin alloy) electroplating to carry out surface treatment to the thread surface of titanium alloy oil well pipe box cupling, utilize the feature that cu-sn alloy coating hardness is moderate, wear resistance is good, improve the wear resistance of oil well pipe hoop screw thread and anti-stick button performance, higher in titanium alloy oil well pipe coupling surface plating one deck bonding force, and there is the bronze (copper-tin alloy) electroplating layer of excellent abrasive resistance, obtaining the bronze (copper-tin alloy) electroplating layer with titanium alloy substrate with good combination power and wear resistance, is the innovation in titanium alloy oil well pipe box cupling bronze (copper-tin alloy) electroplating method.
Accompanying drawing explanation
Fig. 1 is process flow sheet of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.
Provided by Fig. 1, the present invention in the specific implementation, specifically comprises the following steps:
1) electrochemical deoiling: titanium alloy oil well pipe box cupling is immersed in the alkaline degreasing solution of temperature 70-90 DEG C, oil removing 14-20 minute under air blowing is stirred; Alkaline degreasing solution is the aqueous solution, wherein containing tertiary sodium phosphate 30-70g/L, and sodium carbonate or salt of wormwood 20-25g/L, sodium hydroxide 15-25g/L and water glass 10-20g/L, described water glass, also known as water glass, is the liquid sodium silicate that modulus is less than 3;
2) wash: the titanium alloy oil well pipe box cupling after oil removing is first cleaned in the warm water of temperature 40-50 DEG C, then in 10-30 DEG C of clear water of flowing, cleaning extremely eliminates residual alkaline degreasing solution completely, and titanium alloy oil well pipe coupling surface is spontaneously wet out by water completely;
3) pickling: the titanium alloy oil well pipe box cupling after washing is placed in pickle solution and carries out pickling, temperature is 18-25 DEG C, and the time is 15-60s; Pickle solution is the aqueous solution, wherein containing mass concentration be 65% nitric acid 500ml/L and mass concentration be 40% hydrofluoric acid 250ml/L;
4) flow clean water: cleaned in 10-30 DEG C of clear water of flowing by the titanium alloy oil well pipe box cupling after pickling, remove residual pickle solution;
5) activate: the titanium alloy oil well pipe box cupling after the clean water that step 4) flowed is put into activation solution and carried out activation treatment, and activation solution temperature is 30-50 DEG C, and the time is 10-30 minute; Activation solution is the aqueous solution, and wherein containing DMF 400-700 ml/L, mass concentration is the hydrofluoric acid 50-150ml/L of 40%, lactic acid 10-50ml/L and citric acid 10-30g/L;
6) flow clean water again: cleaned in 10-30 DEG C of clear water of flowing by the titanium alloy oil well pipe box cupling after activation treatment, removes the activation solution on surface;
7) chemical nickel plating: it is carry out chemical nickel plating inside the chemical nickel-plating solution of 80-90 DEG C that the titanium alloy oil well pipe box cupling after the clean water that step 6) flowed inserts temperature, and the time is 5-15 minute; Described chemical nickel-plating solution is the aqueous solution, wherein containing single nickel salt 33g/L, inferior sodium phosphate 17g/L, and ammonium chloride 50g/L and Trisodium Citrate 84g/L;
8) rinse: the titanium alloy oil well pipe box cupling of step 7) chemical nickel plating is rinsed in 10-30 DEG C of clear water of flowing, remove the chemical nickel-plating solution of workpiece surface;
9) bronze (copper-tin alloy) electroplating: inserted by the nickel plated titanium alloy oil well pipe box cupling of step 8) process and be equipped with in the plating tank of plating solution, adopts conventional electroplating method to carry out electroplating processes, bath temperature 20-50 DEG C, time 20-30min, current density 2-3A/dm
2, obtain the titanium alloy oil well pipe box cupling of bronze (copper-tin alloy) electroplating; Described plating solution is the aqueous solution, wherein containing cupric pyrophosphate 20-25 g/L, potassium pyrophosphate 230-260g/L, sodium stannate 45-60g/L, Seignette salt 30-35g/L, saltpetre 40-45g/L and gelatin 0.01-0.02g/L;
10) rinse oven dry: rinsed in 10-30 DEG C of clear water of flowing by the titanium alloy oil well pipe box cupling of bronze (copper-tin alloy) electroplating, remove the plating solution of workpiece surface, dry.
Embodiment 1
Bronze (copper-tin alloy) electroplating process is carried out to TC4 titanium alloy oil well pipe box cupling, comprises the following steps:
1) electrochemical deoiling: TC4 titanium alloy oil well pipe box cupling being placed in temperature is 85 DEG C of alkaline degreasing solution, to blow under pneumatic blending oil removing 15 minutes, alkaline degreasing solution is the aqueous solution, wherein containing tertiary sodium phosphate 40 g/L, sodium carbonate 20g/L, sodium hydroxide 20g/L, water glass 15g/L;
2) wash: the TC4 titanium alloy oil well pipe box cupling after oil removing is first cleaned in the warm water of temperature 40 DEG C, then in 12 DEG C of clear water of flowing, cleaning extremely eliminates residual alkaline degreasing solution completely, and TC4 titanium alloy oil well pipe coupling surface is spontaneously wet out by water completely;
3) pickling: the TC4 titanium alloy oil well pipe box cupling after washing is placed in pickle solution and carries out pickling, temperature is 18 DEG C, and the time is 30s; Pickle solution is the aqueous solution, wherein containing mass concentration be 65% nitric acid 500ml/L and mass concentration be 40% hydrofluoric acid 250ml/L;
4) flow clean water: cleaned in 12 DEG C of clear water of flowing by the TC4 titanium alloy oil well pipe box cupling after pickling, remove residual pickle solution;
5) activate: it is that 40 DEG C of activation solutions carry out activation treatment that the TC4 titanium alloy oil well pipe box cupling after the clean water that step 4) flowed puts into temperature, 15 minutes time; Described activation solution is the aqueous solution, and wherein, containing DMF 500ml/L, mass concentration is the hydrofluoric acid 50ml/L of 40%, lactic acid 20ml/L and citric acid 15g/L;
6) flow clean water again: cleaned in 12 DEG C of clear water of flowing by the TC4 titanium alloy oil well pipe box cupling after activation treatment, removes the activation solution on surface;
7) chemical nickel plating: it is carry out chemical nickel plating inside the alkaline electroless plating nickel solution of 90 DEG C that the TC4 titanium alloy oil well pipe box cupling after the clean water that step 6) flowed inserts temperature, and the time is 5 minutes; Described chemical nickel-plating solution is the aqueous solution, wherein, containing single nickel salt 33g/L, inferior sodium phosphate 17g/L, and ammonium chloride 50g/L and Trisodium Citrate 84g/L;
8) rinse: the TC4 titanium alloy oil well pipe box cupling of step 7) chemical nickel plating is rinsed in 12 DEG C of clear water of flowing, remove the chemical nickel-plating solution of workpiece surface;
9) bronze (copper-tin alloy) electroplating: inserted by the nickel plating TC4 titanium alloy oil well pipe box cupling of step 8) process and be equipped with in the plating tank of plating solution, adopts conventional electroplating method to carry out electroplating processes, bath temperature 40 DEG C, time 30min, current density 2A/dm
2, obtain the TC4 titanium alloy oil well pipe box cupling of bronze (copper-tin alloy) electroplating; Described plating solution is the aqueous solution, wherein containing cupric pyrophosphate 20g/L, potassium pyrophosphate 230g/L, sodium stannate 45g/L, Seignette salt 35g/L, saltpetre 45g/L and gelatin 0.01g/L;
10) rinse oven dry: rinsed in 12 DEG C of clear water of flowing by the TC4 titanium alloy oil well pipe box cupling of bronze (copper-tin alloy) electroplating, remove the plating solution of workpiece surface, dry.
Embodiment 2
Bronze (copper-tin alloy) electroplating process is carried out to Ti31 titanium alloy oil well pipe box cupling, comprises the following steps:
1) electrochemical deoiling: Ti31 titanium alloy oil well pipe box cupling being placed in temperature is 75 DEG C of alkaline degreasing solution, to blow under pneumatic blending oil removing 18 minutes, alkaline degreasing solution is the aqueous solution, wherein containing tertiary sodium phosphate 50 g/L, salt of wormwood 25g/L, sodium hydroxide 20g/L and water glass 15g/L;
2) wash: the Ti31 titanium alloy oil well pipe box cupling after oil removing is first cleaned in the warm water of temperature 50 C, then in 28 DEG C of clear water of flowing, cleaning extremely eliminates residual alkaline degreasing solution completely, and Ti31 titanium alloy oil well pipe coupling surface is spontaneously wet out by water completely;
3) pickling: the Ti31 titanium alloy oil well pipe box cupling after washing is placed in pickle solution and carries out pickling, temperature is 25 DEG C, and the time is 40s; Pickle solution is the aqueous solution, wherein containing mass concentration be 65% nitric acid 500 ml/L and mass concentration be 40% hydrofluoric acid 250ml/L;
4) flow clean water: cleaned in flowing 28 DEG C of clear water by the Ti31 titanium alloy oil well pipe box cupling after pickling, remove residual pickle solution;
5) activate: Ti31 titanium alloy oil well pipe box cupling being put into temperature is that 45 DEG C of activation solutions carry out activation treatment, 15 minutes time; Described activation solution is the aqueous solution, and wherein containing DMF 600ml/L, mass concentration is the hydrofluoric acid 80ml/L of 40%, lactic acid 25ml/L and citric acid 10g/L;
6) flow clean water again: cleaned in 28 DEG C of clear water of flowing by the Ti31 titanium alloy oil well pipe box cupling after activation treatment, removes the solution alive on surface;
7) chemical nickel plating: it is carry out chemical nickel plating inside the alkaline electroless plating nickel solution of 85 DEG C that the Ti31 titanium alloy oil well pipe box cupling after the clean water that step 6) flowed inserts temperature, and the time is 10 minutes; Described chemical nickel-plating solution is the aqueous solution, wherein containing single nickel salt 33g/L, inferior sodium phosphate 17g/L, and ammonium chloride 50g/L, Trisodium Citrate 84g/L;
8) rinse: the Ti31 titanium alloy oil well pipe box cupling of step 7) chemical nickel plating is rinsed in 28 DEG C of clear water of flowing, remove the chemical nickel-plating solution of workpiece surface;
9) bronze (copper-tin alloy) electroplating: inserted by the nickel plating Ti31 titanium alloy oil well pipe box cupling of step 8) process and be equipped with in the plating tank of plating solution, adopts conventional electroplating method to carry out electroplating processes, bath temperature 40 DEG C, time 20min, current density 3A/dm
2, obtain the Ti31 titanium alloy oil well pipe box cupling of bronze (copper-tin alloy) electroplating; Described plating solution is the aqueous solution, wherein containing cupric pyrophosphate 25g/L, potassium pyrophosphate 250g/L, sodium stannate 50g/L, Seignette salt 30g/L, saltpetre 45g/L and gelatin 0.02g/L;
10) rinse oven dry: rinsed in 28 DEG C of clear water of flowing by the Ti31 titanium alloy oil well pipe box cupling of bronze (copper-tin alloy) electroplating, remove the plating solution of workpiece surface, dry.
Service condition of the present invention is, on tubing joint surface, gained cu-sn alloy coating thickness is even, cu-sn alloy coating and matrix have good bonding force, wear resistance is good, detect through screw thread make-and-break test antagonism thread gluing, after nine upper shackle operations, thread gluing phenomenon does not occur, cu-sn alloy coating is intact, no marking and peeling phenomenon, stopping property is good.
Processing method provided by the invention is reliable and stable, easy and simple to handle, can obtain cu-sn alloy coating that is even, fine and close, any surface finish, and not need to carry out pyroprocessing after plating.Make-and-break test method is adopted to detect the anti-stick button performance of coating, after nine upper shackle operations there is not thread gluing and scratch phenomenon in bonding surface, cu-sn alloy coating remains intact, no marking and peeling phenomenon, stopping property is good, and through repeatedly repetition test, at least 20 batches, all achieve identical or close effect, be the innovation in titanium alloy oil well pipe box cupling bronze (copper-tin alloy) electroplating method, the application for titanium alloy oil well pipe is significant.
Claims (3)
1. a titanium alloy oil well pipe box cupling bronze (copper-tin alloy) electroplating method, is characterized in that, comprise the following steps:
1) electrochemical deoiling: titanium alloy oil well pipe box cupling is immersed in the alkaline degreasing solution of temperature 70-90 DEG C, oil removing 14-20 minute under air blowing is stirred; Alkaline degreasing solution is the aqueous solution, wherein containing tertiary sodium phosphate 30-70g/L, and sodium carbonate or salt of wormwood 20-25g/L, sodium hydroxide 15-25g/L and water glass 10-20g/L, described water glass, also known as water glass, is the liquid sodium silicate that modulus is less than 3;
2) wash: the titanium alloy oil well pipe box cupling after oil removing is first cleaned in the warm water of temperature 40-50 DEG C, then in 10-30 DEG C of clear water of flowing, cleaning extremely eliminates residual alkaline degreasing solution completely, and titanium alloy oil well pipe coupling surface is spontaneously wet out by water completely;
3) pickling: the titanium alloy oil well pipe box cupling after washing is placed in pickle solution and carries out pickling, temperature is 18-25 DEG C, and the time is 15-60s; Pickle solution is the aqueous solution, wherein containing mass concentration be 65% nitric acid 500ml/L and mass concentration be 40% hydrofluoric acid 250ml/L;
4) flow clean water: cleaned in 10-30 DEG C of clear water of flowing by the titanium alloy oil well pipe box cupling after pickling, remove residual pickle solution;
5) activate: the titanium alloy oil well pipe box cupling after the clean water that step 4) flowed is put into activation solution and carried out activation treatment, and activation solution temperature is 30-50 DEG C, and the time is 10-30 minute; Activation solution is the aqueous solution, and wherein containing DMF 400-700 ml/L, mass concentration is the hydrofluoric acid 50-150ml/L of 40%, lactic acid 10-50ml/L and citric acid 10-30g/L;
6) flow clean water again: cleaned in 10-30 DEG C of clear water of flowing by the titanium alloy oil well pipe box cupling after activation treatment, removes the activation solution on surface;
7) chemical nickel plating: it is carry out chemical nickel plating inside the chemical nickel-plating solution of 80-90 DEG C that the titanium alloy oil well pipe box cupling after the clean water that step 6) flowed inserts temperature, and the time is 5-15 minute; Described chemical nickel-plating solution is the aqueous solution, wherein containing single nickel salt 33g/L, inferior sodium phosphate 17g/L, and ammonium chloride 50g/L and Trisodium Citrate 84g/L;
8) rinse: the titanium alloy oil well pipe box cupling of step 7) chemical nickel plating is rinsed in 10-30 DEG C of clear water of flowing, remove the chemical nickel-plating solution of workpiece surface;
9) bronze (copper-tin alloy) electroplating: inserted by the nickel plated titanium alloy oil well pipe box cupling of step 8) process and be equipped with in the plating tank of plating solution, adopts conventional electroplating method to carry out electroplating processes, bath temperature 20-50 DEG C, time 20-30min, current density 2-3A/dm
2, obtain the titanium alloy oil well pipe box cupling of bronze (copper-tin alloy) electroplating; Described plating solution is the aqueous solution, wherein containing cupric pyrophosphate 20-25 g/L, potassium pyrophosphate 230-260g/L, sodium stannate 45-60g/L, Seignette salt 30-35g/L, saltpetre 40-45g/L and gelatin 0.01-0.02g/L;
10) rinse oven dry: rinsed in 10-30 DEG C of clear water of flowing by the titanium alloy oil well pipe box cupling of bronze (copper-tin alloy) electroplating, remove the plating solution of workpiece surface, dry.
2. titanium alloy oil well pipe box cupling bronze (copper-tin alloy) electroplating method according to claim 1, is characterized in that, carry out bronze (copper-tin alloy) electroplating process, comprise the following steps TC4 titanium alloy oil well pipe box cupling:
1) electrochemical deoiling: TC4 titanium alloy oil well pipe box cupling being placed in temperature is 85 DEG C of alkaline degreasing solution, to blow under pneumatic blending oil removing 15 minutes, alkaline degreasing solution is the aqueous solution, wherein containing tertiary sodium phosphate 40 g/L, sodium carbonate 20g/L, sodium hydroxide 20g/L, water glass 15g/L;
2) wash: the TC4 titanium alloy oil well pipe box cupling after oil removing is first cleaned in the warm water of temperature 40 DEG C, then in 12 DEG C of clear water of flowing, cleaning extremely eliminates residual alkaline degreasing solution completely, and TC4 titanium alloy oil well pipe coupling surface is spontaneously wet out by water completely;
3) pickling: the TC4 titanium alloy oil well pipe box cupling after washing is placed in pickle solution and carries out pickling, temperature is 18 DEG C, and the time is 30s; Pickle solution is the aqueous solution, wherein containing mass concentration be 65% nitric acid 500ml/L and mass concentration be 40% hydrofluoric acid 250ml/L;
4) flow clean water: cleaned in 12 DEG C of clear water of flowing by the TC4 titanium alloy oil well pipe box cupling after pickling, remove residual pickle solution;
5) activate: it is that 40 DEG C of activation solutions carry out activation treatment that the TC4 titanium alloy oil well pipe box cupling after the clean water that step 4) flowed puts into temperature, 15 minutes time; Described activation solution is the aqueous solution, and wherein, containing DMF 500ml/L, mass concentration is the hydrofluoric acid 50ml/L of 40%, lactic acid 20ml/L and citric acid 15g/L;
6) flow clean water again: cleaned in 12 DEG C of clear water of flowing by the TC4 titanium alloy oil well pipe box cupling after activation treatment, removes the activation solution on surface;
7) chemical nickel plating: it is carry out chemical nickel plating inside the alkaline electroless plating nickel solution of 90 DEG C that the TC4 titanium alloy oil well pipe box cupling after the clean water that step 6) flowed inserts temperature, and the time is 5 minutes; Described chemical nickel-plating solution is the aqueous solution, wherein, containing single nickel salt 33g/L, inferior sodium phosphate 17g/L, and ammonium chloride 50g/L and Trisodium Citrate 84g/L;
8) rinse: the TC4 titanium alloy oil well pipe box cupling of step 7) chemical nickel plating is rinsed in 12 DEG C of clear water of flowing, remove the chemical nickel-plating solution of workpiece surface;
9) bronze (copper-tin alloy) electroplating: inserted by the nickel plating TC4 titanium alloy oil well pipe box cupling of step 8) process and be equipped with in the plating tank of plating solution, adopts conventional electroplating method to carry out electroplating processes, bath temperature 40 DEG C, time 30min, current density 2A/dm
2, obtain the TC4 titanium alloy oil well pipe box cupling of bronze (copper-tin alloy) electroplating; Described plating solution is the aqueous solution, wherein containing cupric pyrophosphate 20g/L, potassium pyrophosphate 230g/L, sodium stannate 45g/L, Seignette salt 35g/L, saltpetre 45g/L and gelatin 0.01g/L;
10) rinse oven dry: rinsed in 12 DEG C of clear water of flowing by the TC4 titanium alloy oil well pipe box cupling of bronze (copper-tin alloy) electroplating, remove the plating solution of workpiece surface, dry.
3. titanium alloy oil well pipe box cupling bronze (copper-tin alloy) electroplating method according to claim 1, is characterized in that, carry out bronze (copper-tin alloy) electroplating process, comprise the following steps Ti31 titanium alloy oil well pipe box cupling:
1) electrochemical deoiling: Ti31 titanium alloy oil well pipe box cupling being placed in temperature is 75 DEG C of alkaline degreasing solution, to blow under pneumatic blending oil removing 18 minutes, alkaline degreasing solution is the aqueous solution, wherein containing tertiary sodium phosphate 50 g/L, salt of wormwood 25g/L, sodium hydroxide 20g/L and water glass 15g/L;
2) wash: the Ti31 titanium alloy oil well pipe box cupling after oil removing is first cleaned in the warm water of temperature 50 C, then in 28 DEG C of clear water of flowing, cleaning extremely eliminates residual alkaline degreasing solution completely, and Ti31 titanium alloy oil well pipe coupling surface is spontaneously wet out by water completely;
3) pickling: the Ti31 titanium alloy oil well pipe box cupling after washing is placed in pickle solution and carries out pickling, temperature is 25 DEG C, and the time is 40s; Pickle solution is the aqueous solution, wherein containing mass concentration be 65% nitric acid 500 ml/L and mass concentration be 40% hydrofluoric acid 250ml/L;
4) flow clean water: cleaned in flowing 28 DEG C of clear water by the Ti31 titanium alloy oil well pipe box cupling after pickling, remove residual pickle solution;
5) activate: Ti31 titanium alloy oil well pipe box cupling being put into temperature is that 45 DEG C of activation solutions carry out activation treatment, 15 minutes time; Described activation solution is the aqueous solution, and wherein containing DMF 600ml/L, mass concentration is the hydrofluoric acid 80ml/L of 40%, lactic acid 25ml/L and citric acid 10g/L;
6) flow clean water again: cleaned in 28 DEG C of clear water of flowing by the Ti31 titanium alloy oil well pipe box cupling after activation treatment, removes the solution alive on surface;
7) chemical nickel plating: it is carry out chemical nickel plating inside the alkaline electroless plating nickel solution of 85 DEG C that the Ti31 titanium alloy oil well pipe box cupling after the clean water that step 6) flowed inserts temperature, and the time is 10 minutes; Described chemical nickel-plating solution is the aqueous solution, wherein containing single nickel salt 33g/L, inferior sodium phosphate 17g/L, and ammonium chloride 50g/L, Trisodium Citrate 84g/L;
8) rinse: the Ti31 titanium alloy oil well pipe box cupling of step 7) chemical nickel plating is rinsed in 28 DEG C of clear water of flowing, remove the chemical nickel-plating solution of workpiece surface;
9) bronze (copper-tin alloy) electroplating: inserted by the nickel plating Ti31 titanium alloy oil well pipe box cupling of step 8) process and be equipped with in the plating tank of plating solution, adopts conventional electroplating method to carry out electroplating processes, bath temperature 40 DEG C, time 20min, current density 3A/dm
2, obtain the Ti31 titanium alloy oil well pipe box cupling of bronze (copper-tin alloy) electroplating; Described plating solution is the aqueous solution, wherein containing cupric pyrophosphate 25g/L, potassium pyrophosphate 250g/L, sodium stannate 50g/L, Seignette salt 30g/L, saltpetre 45g/L and gelatin 0.02g/L;
10) rinse oven dry: rinsed in 28 DEG C of clear water of flowing by the Ti31 titanium alloy oil well pipe box cupling of bronze (copper-tin alloy) electroplating, remove the plating solution of workpiece surface, dry.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112410837A (en) * | 2020-10-27 | 2021-02-26 | 沈阳富创精密设备股份有限公司 | Direct nickel electroplating process on titanium alloy TC4 |
| CN118291889A (en) * | 2024-06-03 | 2024-07-05 | 咸阳职业技术学院 | Preparation method of copper-plated titanium alloy silk-screen reinforced aluminum alloy for automobile front cover plate |
-
2014
- 2014-11-26 CN CN201410703347.2A patent/CN104451677A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112410837A (en) * | 2020-10-27 | 2021-02-26 | 沈阳富创精密设备股份有限公司 | Direct nickel electroplating process on titanium alloy TC4 |
| CN118291889A (en) * | 2024-06-03 | 2024-07-05 | 咸阳职业技术学院 | Preparation method of copper-plated titanium alloy silk-screen reinforced aluminum alloy for automobile front cover plate |
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