阅读说明：本技术 一种镀镍银线的生产工艺 (Production process of nickel-silver plated wire ) 是由 王健 李武广 于 2020-07-20 设计创作，主要内容包括：本发明公开了一种镀镍银线生产工艺,包括下述的工艺步骤：上挂,超声波除油,电解除油,一次活化,一次超声波水洗,一次镀镍,二次超声波水洗,二次镀镍,二次活化,预镀银,镀银,钝化,钝化还原,防变色,热水清洗,干燥,下挂,在干燥处理中,蒸汽温度为100～120℃,烘干时间为8～10秒,在热水清洗处理中,热纯水温度为50～70°,清洗时间为5～10秒,本发明制备工艺简单,用该工艺制得的镀镍银线,镀层表面具有很好的金属光泽,附着性好,韧性好,延展性能优良。(The invention discloses a production process of a nickel and silver plated wire, which comprises the following process steps: the method comprises the following steps of hanging, ultrasonic oil removal, electrolytic oil removal, primary activation, primary ultrasonic water washing, primary nickel plating, secondary ultrasonic water washing, secondary nickel plating, secondary activation, pre-silver plating, passivation reduction, discoloration prevention, hot water cleaning, drying and hanging, wherein in the drying treatment, the steam temperature is 100-120 ℃, the drying time is 8-10 seconds, in the hot water cleaning treatment, the hot pure water temperature is 50-70 ℃, and the cleaning time is 5-10 seconds.)

1. The production process of the nickel-silver plated wire is characterized by comprising the following process steps:

(1) hanging: hanging the wire on a hanger;

(2) ultrasonic oil removal: placing the wire in an ultrasonic oil removal tank for oil removal treatment;

(3) electrolytic degreasing: the wire rod after ultrasonic oil removal is placed in alkaline chemical degreasing liquid for degreasing treatment, and then the wire rod after degreasing is placed in tap water for cleaning so as to remove the degreasing liquid remained on the surface of the wire rod;

(4) primary activation: placing the wire rod in a low-volatility pickling solution for pickling and activation, and then placing the pickled wire rod in pure water for cleaning to remove the residual pickling solution on the surface of the wire rod;

(5) primary ultrasonic water washing: placing the wire rod subjected to primary activation in an ultrasonic cleaning tank for cleaning;

(6) primary nickel plating: carrying out nickel plating on the wire rod subjected to ultrasonic water washing, taking nickel sulfamate as a main salt, nickel chloride as an activating agent and boric acid as a buffering agent, then adding an additive taking a surfactant as a main body, plating a first nickel layer with the thickness of 0.5-3.0 microns on the surface of the wire rod, and then putting the wire rod subjected to primary nickel plating into pure water for cleaning to remove nickel plating solution remained on the surface of the wire rod;

(7) secondary ultrasonic water washing: putting the wire subjected to the primary nickel plating into an ultrasonic cleaning tank for cleaning;

(8) secondary nickel plating: plating nickel on the wire rod subjected to secondary ultrasonic water washing, wherein nickel sulfate is used as main salt, nickel chloride is used as an activating agent, boric acid is used as a buffering agent, then an additive taking a surfactant as a main body is added, plating a second nickel layer with the thickness of 0.1-0.5 micrometer on the surface of the wire rod, and then placing the wire rod subjected to secondary nickel plating in pure water for cleaning to remove nickel plating solution remained on the surface of the wire rod;

(9) and (3) secondary activation: putting the wire rod subjected to secondary nickel plating into acid salt powder for activation, and then putting the activated wire rod into pure water for cleaning to remove the residual acid salt powder on the surface of the wire rod;

(10) pre-silver plating: putting the wire rod subjected to secondary activation into a pre-plating solution for pre-silver plating treatment;

(11) silver plating: putting the wire rod which is pre-plated with silver into silver plating solution for silver plating; then, putting the silver-plated wire into pure water for cleaning so as to remove residual silver plating solution on the surface of the wire;

(12) passivation: putting the silver-plated wire into a passivation solution for passivation, and then putting the passivated wire into pure water for cleaning to remove the residual passivation solution on the surface of the passivated wire;

(13) passivation and reduction: putting the passivated wire rod into a reducing solution for passivation reduction, and then putting the passivated and reduced wire rod into pure water for cleaning to remove the residual reducing solution on the surface of the wire rod;

(14) and (3) color change prevention: spraying a silver protective agent on the surface of the wire rod after passivation reduction, and then putting the wire rod after spraying into pure water for cleaning to remove the residual silver protective agent on the surface of the wire rod;

(15) and (3) hot water cleaning: placing the wire subjected to the discoloration prevention treatment in hot pure water for cleaning;

(16) and (3) drying: drying the surface moisture of the wire rod subjected to hot water cleaning treatment in a fan, and completely drying the surface moisture and the internal moisture of the wire rod through steam;

(17) hanging: and taking down the dried wire.

2. A nickel-silver plating wire production process according to claim 1, wherein in secondary nickel plating, nickel sulfate is used as a main salt, and the concentration is 250-300 g/L; nickel chloride is used as an activator, and the concentration is 40-50 g/L; boric acid is used as a buffering agent, and the concentration is 30-40 g/L; and adding a proper amount of additive taking a surfactant as a main body.

3. The production process of a nickel-silver plated wire according to claim 1, wherein each L of the oil liquid contains 35-45 g of anhydrous sodium carbonate, 30-35 g of trisodium phosphate, 38-45 g of sodium hydroxide and 10-20 g of washing powder except pure water.

4. The production process of a nickel-silver plating wire according to claim 1, wherein 50-80 g of analytically pure sulfuric acid is contained in each L of pickling solution besides pure water.

5. A nickel-silver plating wire production process according to claim 1, wherein in the drying treatment, the steam temperature is 100-120 ℃, and the drying time is 8-10 seconds.

6. A production process of a nickel-silver plated wire according to claim 1, wherein in the hot water cleaning treatment, the temperature of the hot pure water is 50-70 degrees, and the cleaning time is 5-10 seconds.

7. A production process of a nickel-silver plating wire according to claim 1, characterized in that during the passivation treatment, the passivation solution is potassium dichromate with a concentration of 45-55 g/L and a temperature of 85-95 ℃.

8. The process according to claim 1, wherein in the passivation reduction treatment, the reducing solution is sodium bisulfite, the concentration is 25-35g/L, and the temperature is 40-50 ℃.

Technical Field

The invention relates to the technical field of wire preparation, in particular to a production process of a nickel-silver plated wire.

Background

With the rapid development of global economy, the demand for plated wire materials in the fields of transportation, energy, power, electronics and the like has been on a steep increase. The known plated wire products in the market mainly adopt tin plating, nickel plating and silver plating, and the surface nickel plating is generally adopted to improve the corrosion resistance and the wear resistance of the silver wire, but the plating layer is easy to fall off by the existing silver wire nickel plating process, and the corrosion resistance effect of the plating layer is poor.

Disclosure of Invention

The present invention aims to overcome the above-mentioned shortcomings and provide a technical solution to solve the above-mentioned problems.

A production process of a nickel-silver plated wire comprises the following process steps:

(1) hanging: hanging the wire on a hanger;

(2) ultrasonic oil removal: placing the wire in an ultrasonic oil removal tank for oil removal treatment;

(3) electrolytic degreasing: the wire rod after ultrasonic oil removal is placed in alkaline chemical degreasing liquid for degreasing treatment, and then the wire rod after degreasing is placed in tap water for cleaning so as to remove the degreasing liquid remained on the surface of the wire rod;

(4) primary activation: placing the wire rod in a low-volatility pickling solution for pickling and activation, and then placing the pickled wire rod in pure water for cleaning to remove the residual pickling solution on the surface of the wire rod;

(5) primary ultrasonic water washing: placing the wire rod subjected to primary activation in an ultrasonic cleaning tank for cleaning;

(6) primary nickel plating: carrying out nickel plating on the wire rod subjected to ultrasonic water washing, taking nickel sulfamate as a main salt, nickel chloride as an activating agent and boric acid as a buffering agent, then adding an additive taking a surfactant as a main body, plating a first nickel layer with the thickness of 0.5-3.0 microns on the surface of the wire rod, and then putting the wire rod subjected to primary nickel plating into pure water for cleaning to remove nickel plating solution remained on the surface of the wire rod;

(7) secondary ultrasonic water washing: putting the wire subjected to the primary nickel plating into an ultrasonic cleaning tank for cleaning;

(8) secondary nickel plating: plating nickel on the wire rod subjected to secondary ultrasonic water washing, wherein nickel sulfate is used as main salt, nickel chloride is used as an activating agent, boric acid is used as a buffering agent, then an additive taking a surfactant as a main body is added, plating a second nickel layer with the thickness of 0.1-0.5 micrometer on the surface of the wire rod, and then placing the wire rod subjected to secondary nickel plating in pure water for cleaning to remove nickel plating solution remained on the surface of the wire rod;

(9) and (3) secondary activation: putting the wire rod subjected to secondary nickel plating into acid salt powder for activation, and then putting the activated wire rod into pure water for cleaning to remove the residual acid salt powder on the surface of the wire rod;

(10) pre-silver plating: putting the wire rod subjected to secondary activation into a pre-plating solution for pre-silver plating treatment;

(11) silver plating: putting the wire rod which is pre-plated with silver into silver plating solution for silver plating; then, putting the silver-plated wire into pure water for cleaning so as to remove residual silver plating solution on the surface of the wire;

(12) passivation: putting the silver-plated wire into a passivation solution for passivation, and then putting the passivated wire into pure water for cleaning to remove the residual passivation solution on the surface of the passivated wire;

(13) passivation and reduction: putting the passivated wire rod into a reducing solution for passivation reduction, and then putting the passivated and reduced wire rod into pure water for cleaning to remove the residual reducing solution on the surface of the wire rod;

(14) and (3) color change prevention: spraying a silver protective agent on the surface of the wire rod after passivation reduction, and then putting the wire rod after spraying into pure water for cleaning to remove the residual silver protective agent on the surface of the wire rod;

(15) and (3) hot water cleaning: placing the wire subjected to the discoloration prevention treatment in hot pure water for cleaning;

(16) and (3) drying: drying the surface moisture of the wire rod subjected to hot water cleaning treatment in a fan, and completely drying the surface moisture and the internal moisture of the wire rod through steam;

(17) hanging: and taking down the dried wire.

As a further scheme of the invention: in the secondary nickel plating, nickel sulfate is used as main salt, and the concentration is 250-300 g/L; nickel chloride is used as an activator, and the concentration is 40-50 g/L; boric acid is used as a buffering agent, and the concentration is 30-40 g/L; and adding a proper amount of additive taking a surfactant as a main body.

As a further scheme of the invention: each L of the oil liquid contains 35-45 g of anhydrous sodium carbonate, 30-35 g of trisodium phosphate, 38-45 g of sodium hydroxide and 10-20 g of washing powder except pure water.

As a further scheme of the invention: each L of the pickling solution contains 50-80 g of analytically pure sulfuric acid in addition to pure water.

As a further scheme of the invention: in the drying treatment, the steam temperature is 100-120 ℃, and the drying time is 8-10 seconds.

As a further scheme of the invention: in the hot water cleaning treatment, the temperature of hot pure water is 50-70 degrees, and the cleaning time is 5-10 seconds.

As a further scheme of the invention: in the passivation treatment, the passivation solution is potassium dichromate, the concentration is 45-55 g/L, and the temperature is 85-95 ℃.

As a further scheme of the invention: in the passivation reduction treatment, the reducing solution is sodium bisulfite, the concentration is 25-35g/L, and the temperature is 40-50 ℃.

Compared with the prior art, the invention has the beneficial effects that: the preparation method is simple, the first nickel layer and the second nickel layer are plated on the surface of the wire, the plating layer is tightly combined with the wire, is not easy to fall off and has strong corrosion resistance, and the silver protective agent is sprayed on the surface of the wire to prevent oxidation and discoloration, so that the surface of the plating layer has good metallic luster.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the embodiment of the invention, the production process of the nickel and silver plated wire comprises the following process steps:

(1) hanging: hanging the wire on a hanger;

(2) ultrasonic oil removal: placing the wire in an ultrasonic oil removal tank for oil removal treatment;

(3) electrolytic degreasing: the wire rod after ultrasonic oil removal is placed in alkaline chemical degreasing liquid for degreasing treatment, and then the wire rod after degreasing is placed in tap water for cleaning so as to remove the degreasing liquid remained on the surface of the wire rod;

(4) primary activation: placing the wire rod in a low-volatility pickling solution for pickling and activation, and then placing the pickled wire rod in pure water for cleaning to remove the residual pickling solution on the surface of the wire rod;

(5) primary ultrasonic water washing: placing the wire rod subjected to primary activation in an ultrasonic cleaning tank for cleaning;

(6) primary nickel plating: carrying out nickel plating on the wire rod subjected to ultrasonic water washing, taking nickel sulfamate as a main salt, nickel chloride as an activating agent and boric acid as a buffering agent, then adding an additive taking a surfactant as a main body, plating a first nickel layer with the thickness of 0.5-3.0 microns on the surface of the wire rod, and then putting the wire rod subjected to primary nickel plating into pure water for cleaning to remove nickel plating solution remained on the surface of the wire rod;

(7) secondary ultrasonic water washing: putting the wire subjected to the primary nickel plating into an ultrasonic cleaning tank for cleaning;

(8) secondary nickel plating: plating nickel on the wire rod subjected to secondary ultrasonic water washing, wherein nickel sulfate is used as main salt, nickel chloride is used as an activating agent, boric acid is used as a buffering agent, then an additive taking a surfactant as a main body is added, plating a second nickel layer with the thickness of 0.1-0.5 micrometer on the surface of the wire rod, and then placing the wire rod subjected to secondary nickel plating in pure water for cleaning to remove nickel plating solution remained on the surface of the wire rod;

(9) and (3) secondary activation: putting the wire rod subjected to secondary nickel plating into acid salt powder for activation, and then putting the activated wire rod into pure water for cleaning to remove the residual acid salt powder on the surface of the wire rod;

(10) pre-silver plating: putting the wire rod subjected to secondary activation into a pre-plating solution for pre-silver plating treatment;

(11) silver plating: putting the wire rod which is pre-plated with silver into silver plating solution for silver plating; then, putting the silver-plated wire into pure water for cleaning so as to remove residual silver plating solution on the surface of the wire;

(12) passivation: putting the silver-plated wire into a passivation solution for passivation, and then putting the passivated wire into pure water for cleaning to remove the residual passivation solution on the surface of the passivated wire;

(13) passivation and reduction: putting the passivated wire rod into a reducing solution for passivation reduction, and then putting the passivated and reduced wire rod into pure water for cleaning to remove the residual reducing solution on the surface of the wire rod;

(14) and (3) color change prevention: spraying a silver protective agent on the surface of the wire rod after passivation reduction, and then putting the wire rod after spraying into pure water for cleaning to remove the residual silver protective agent on the surface of the wire rod;

(15) and (3) hot water cleaning: placing the wire subjected to the discoloration prevention treatment in hot pure water for cleaning;

(16) and (3) drying: drying the surface moisture of the wire rod subjected to hot water cleaning treatment in a fan, and completely drying the surface moisture and the internal moisture of the wire rod through steam;

(17) hanging: and taking down the dried wire.

In the secondary nickel plating, nickel sulfate is used as main salt, and the concentration is 250-300 g/L; nickel chloride is used as an activator, and the concentration is 40-50 g/L; boric acid is used as a buffering agent, and the concentration is 30-40 g/L; and adding a proper amount of additive taking a surfactant as a main body.

Each L of the oil liquid contains 35-45 g of anhydrous sodium carbonate, 30-35 g of trisodium phosphate, 38-45 g of sodium hydroxide and 10-20 g of washing powder except pure water.

Each L of the pickling solution contains 50-80 g of analytically pure sulfuric acid in addition to pure water.

In the drying treatment, the steam temperature is 100-120 ℃, and the drying time is 8-10 seconds.

In the hot water cleaning treatment, the temperature of hot pure water is 50-70 degrees, and the cleaning time is 5-10 seconds.

In the passivation treatment, the passivation solution is potassium dichromate, the concentration is 45-55 g/L, and the temperature is 85-95 ℃.

In the passivation reduction treatment, the reducing solution is sodium bisulfite, the concentration is 25-35g/L, and the temperature is 40-50 ℃.

The preparation method is simple, the first nickel layer and the second nickel layer are plated on the surface of the wire, the plating layer is tightly combined with the wire, is not easy to fall off and has strong corrosion resistance, and the silver protective agent is sprayed on the surface of the wire to prevent oxidation and discoloration, so that the surface of the plating layer has good metallic luster.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.