CN103320826A - Automatic conductor strand chromium plating process - Google Patents

Automatic conductor strand chromium plating process Download PDF

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Publication number
CN103320826A
CN103320826A CN2013102319746A CN201310231974A CN103320826A CN 103320826 A CN103320826 A CN 103320826A CN 2013102319746 A CN2013102319746 A CN 2013102319746A CN 201310231974 A CN201310231974 A CN 201310231974A CN 103320826 A CN103320826 A CN 103320826A
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China
Prior art keywords
plating
enter
strands
plated
neutral
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Pending
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CN2013102319746A
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Chinese (zh)
Inventor
仇莉莉
仇士学
樊健
东永华
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Nantong Shenhai Science And Industrial Technology Co ltd
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Nantong Shenhai Science And Industrial Technology Co ltd
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Priority to CN2013102319746A priority Critical patent/CN103320826A/en
Publication of CN103320826A publication Critical patent/CN103320826A/en
Pending legal-status Critical Current

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Abstract

The invention discloses an automatic conductor strand chromium plating process. The automatic conductor strand chromium plating process is characterized by comprising a plating pretreatment step, a chromium plating step and a plating after-treatment step, wherein the plating pretreatment step comprises the sub-steps of enabling strands to enter a u-151 oil powder removing solution tank at a uniform speed for chemical degreasing, washing and cleaning the degreased strands to be neutral by using water, enabling the neutral strands to enter a hydrochloric acid solution for pickling, washing the pickled strands to be neutral by using water, enabling the neutral strands to enter a u-152 oil powder removing solution tank for chemical degreasing, flushing the degreased strands to be neutral by using water, enabling the neutral strands to enter a sulfuric acid solution tank for activation, and enabling the activated strands to enter a deionized water tank so as to be flushed to be neutral; the chromium plating step comprises the sub-steps of enabling the treated strands to enter a plating liquid tank for chromium plating, and then, enabling the chromium-plated strands to enter a clean water tank for water washing; and the plating after-treatment step comprises the sub-steps of enabling the chromium-plated strands to enter a normal-temperature clean water tank for flushing, enabling the flushed chromium-plated strands to enter a baking oven, automatically coiling after the flushed chromium-plated strands are dried, and carrying out nitrogen-filling vacuum packaging. The automatic conductor strand chromium plating process has the advantages that the process is simple in step and convenient to operate, a plated layer is uniform, does not fall off and does not crack and blister during winding, and the conductor strands do not fracture, so that the process is suitable for promotion.

Description

The automatic chrome-plated process of conductor strand
Technical field
The present invention relates to niobium silk compound conductor strand chrome-plated process, relate in particular to the automatic chrome-plated process of a kind of conductor strand.
Background technology
Nb3sn conductor strand is a kind of very important material in the international thermonuclear fusion experimental reactor planning item, diameter has only 0.7mm, and the copper pipe wall thickness that wraps up is 0.05mm, and coating is 0.015mm, and coating requires evenly, does not come off, and does not ftracture during winding, blistering.Accomplish that the conductor strand does not rupture, coating requires up to standard, and common electroplating technology can't reach requirement.
Therefore, be badly in need of a kind of improved technology and solve existing this problem in the prior art.
Summary of the invention
The purpose of this invention is to provide the automatic chrome-plated process of a kind of conductor strand.
The technical solution used in the present invention is:
The automatic chrome-plated process of conductor strand comprises plating pre-treatment, chromium plating, plating aftertreatment three steps,
Plating pre-treatment step: strand is at the uniform velocity entered u-151 carry out electrochemical deoiling 40-60s except in the oil-bound distemper solution tank, the washing of the tank from the beginning cleaning that enters flowing water again is neutral, enter pickling 25-40s in the hydrochloric acid soln then, enter tank washing from the beginning again and be neutral, enter u-152 then and carry out electrochemical deoiling 40-60s except in the oil-bound distemper solution tank, enter tank flushing from the beginning again and be neutral, enter the sulphuric acid soln groove then and activate 60-70s, enter in the deionization tank flushing then and be neutral, enter the chromium plating step again;
Chromium plating step: with the strand of handling, enter in 200-250g/L chromic acid, 2.0-2.5g/L sulfuric acid, the chromic bath trough of 1.8-2.2g/L and carry out chromium plating 150-160s, enter in the Rinsing Area again and wash;
The plating post-processing step: the strand that chromium plating is intact enters baking oven after entering and washing 5-15s in the normal temperature Rinsing Area, carries out the inventory volume after the oven dry, fills the nitrogen vacuum packaging.
The speed of strand is 1.5-2.0m/min in the described plating pre-treatment step.
Described plating pre-treatment step u-151 is 45-55g/L except strength of solution in the oil-bound distemper solution tank, and temperature is 28-35 ℃.
Strength of solution is 110-130ml/L in the described plating pre-treatment step hydrochloric acid soln, and temperature is 25-35 ℃.
U-152 is 55-60g/L except strength of solution in the oil-bound distemper solution tank in the described plating pre-treatment step, and temperature is 50-60 ℃, and electric current is the 1.5-3A/ root.
Strength of solution is 40-50ml/L in the described plating pre-treatment step sulphuric acid soln groove, and temperature is 35-45 ℃.
The temperature of described chromium plating step Zhong Du Chrome is 50-60 ℃.
In the described chromium plating step Rinsing Area, electric current is the 29-32A/ root, and anode is the mixing stereotype of 6-8% tin.
Temperature in the described chromium plating step in the baking oven is 100-120 ℃.
Advantage of the present invention is: processing step is simple, is convenient to operation, and coating evenly, do not come off does not ftracture during winding, blistering, and the conductor strand does not rupture, and is fit to promote.
Embodiment
The following examples can make those skilled in the art more fully understand the present invention, but do not limit the present invention in any way.
Embodiment 1
The automatic chrome-plated process of conductor strand of the present invention comprises plating pre-treatment, chromium plating, plating aftertreatment three steps,
The plating pre-treatment step: it is 45g/L that strand is entered concentration with the at the uniform velocity speed of 1.5m/min, temperature is that 28 ℃ u-151 carries out electrochemical deoiling 60s except in the oil-bound distemper solution tank, the washing of the tank from the beginning cleaning that enters flowing water again is neutral, entering concentration then is 110ml/L, temperature is pickling 40s in 25 ℃ the hydrochloric acid soln, enter tank washing from the beginning again and be neutral, entering concentration then is 55g/L, temperature is 50 ℃, electric current is that the u-152 of 1.5A/ root carries out electrochemical deoiling 60s except in the oil-bound distemper solution tank, enter tank flushing from the beginning again and be neutral, entering concentration then is 40ml/L, temperature is that 35 ℃ sulphuric acid soln groove activates 70s, enter in the deionization tank flushing then and be neutral, enter the chromium plating step again;
The chromium plating step: with the strand of handling, enter in 200g/L chromic acid, 2.0g/L sulfuric acid, the chromic bath trough of 2.2g/L and carry out chromium plating 150s, temperature is 50 ℃, enters in the Rinsing Area and washes, and electric current is the 29A/ root, and anode is the mixing stereotype of 6% tin;
The plating post-processing step: the strand that chromium plating is intact enters in the normal temperature Rinsing Area behind the flushing 5-15s, enters temperature and is in 100 ℃ the baking oven, carries out the inventory volume after the oven dry, fills the nitrogen vacuum packaging.
Embodiment 2
The automatic chrome-plated process of conductor strand of the present invention comprises plating pre-treatment, chromium plating, plating aftertreatment three steps,
The plating pre-treatment step: it is 50g/L that strand is entered concentration with the at the uniform velocity speed of 1.8m/min, temperature is that 30 ℃ u-151 carries out electrochemical deoiling 50s except in the oil-bound distemper solution tank, the washing of the tank from the beginning cleaning that enters flowing water again is neutral, entering concentration then is 120ml/L, temperature is pickling 30s in 30 ℃ the hydrochloric acid soln, enter tank washing from the beginning again and be neutral, entering concentration then is 58g/L, temperature is 55 ℃, electric current is that the u-152 of 2A/ root carries out electrochemical deoiling 50s except in the oil-bound distemper solution tank, enter tank flushing from the beginning again and be neutral, entering concentration then is 45ml/L, temperature is that 40 ℃ sulphuric acid soln groove activates 60s, enter in the deionization tank flushing then and be neutral, enter the chromium plating step again;
The chromium plating step: with the strand of handling, enter in 240g/L chromic acid, 2.4g/L sulfuric acid, the chromic bath trough of 22g/L and carry out chromium plating 155s, temperature is 55 ℃, enters in the Rinsing Area and washes, and electric current is the 30A/ root, and anode is the mixing stereotype of 7% tin;
The plating post-processing step: the strand that chromium plating is intact enters in the normal temperature Rinsing Area behind the flushing 10s, enters temperature and is in 110 ℃ the baking oven, carries out the inventory volume after the oven dry, fills the nitrogen vacuum packaging.
Embodiment 3
The automatic chrome-plated process of conductor strand of the present invention comprises plating pre-treatment, chromium plating, plating aftertreatment three steps,
The plating pre-treatment step: it is 55g/L that strand is entered concentration with the at the uniform velocity speed of 2.0m/min, temperature is that 35 ℃ u-151 carries out electrochemical deoiling 40s except in the oil-bound distemper solution tank, the washing of the tank from the beginning cleaning that enters flowing water again is neutral, entering concentration then is 130ml/L, temperature is pickling 25s in 35 ℃ the hydrochloric acid soln, enter tank washing from the beginning again and be neutral, entering concentration then is 60g/L, temperature is 60 ℃, electric current is that the u-152 of 3A/ root carries out electrochemical deoiling 40s except in the oil-bound distemper solution tank, enter tank flushing from the beginning again and be neutral, entering concentration then is 50ml/L, temperature is that 45 ℃ sulphuric acid soln groove activates 60s, enter in the deionization tank flushing then and be neutral, enter the chromium plating step again;
The chromium plating step: with the strand of handling, enter in 250g/L chromic acid, 2.5g/L sulfuric acid, the chromic bath trough of 2.2g/L and carry out chromium plating 150s, temperature is 60 ℃, enters in the Rinsing Area and washes, and electric current is the 32A/ root, and anode is the mixing stereotype of 8% tin;
The plating post-processing step: the strand that chromium plating is intact enters in the normal temperature Rinsing Area behind the flushing 15s, enters temperature and is in 120 ℃ the baking oven, carries out the inventory volume after the oven dry, fills the nitrogen vacuum packaging.
Processing step is simple, is convenient to operation, and coating evenly, do not come off does not ftracture during winding, blistering, and the conductor strand does not rupture, and is fit to promote.

Claims (9)

1. the automatic chrome-plated process of conductor strand is characterized in that: comprise plating pre-treatment, chromium plating, plating aftertreatment three steps,
Plating pre-treatment step: strand is at the uniform velocity entered u-151 carry out electrochemical deoiling 40-60s except in the oil-bound distemper solution tank, the washing of the tank from the beginning cleaning that enters flowing water again is neutral, enter pickling 25-40s in the hydrochloric acid soln then, enter tank washing from the beginning again and be neutral, enter u-152 then and carry out electrochemical deoiling 40-60s except in the oil-bound distemper solution tank, enter tank flushing from the beginning again and be neutral, enter the sulphuric acid soln groove then and activate 60-70s, enter in the deionization tank flushing then and be neutral, enter the chromium plating step again;
Chromium plating step: with the strand of handling, enter in 200-250g/L chromic acid, 2.0-2.5g/L sulfuric acid, the chromic bath trough of 1.8-2.2g/L and carry out chromium plating 150-160s, enter in the Rinsing Area again and wash;
The plating post-processing step: the strand that chromium plating is intact enters baking oven after entering and washing 5-15s in the normal temperature Rinsing Area, carries out the inventory volume after the oven dry, fills the nitrogen vacuum packaging.
2. the automatic chrome-plated process of conductor strand according to claim 1, it is characterized in that: the speed of strand is 1.5-2.0m/min in the described plating pre-treatment step.
3. the automatic chrome-plated process of conductor strand according to claim 1 is characterized in that: described plating pre-treatment step u-151 is 45-55g/L except strength of solution in the oil-bound distemper solution tank, and temperature is 28-35 ℃.
4. the automatic chrome-plated process of conductor strand according to claim 1, it is characterized in that: strength of solution is 110-130ml/L in the described plating pre-treatment step hydrochloric acid soln, and temperature is 25-35 ℃.
5. the automatic chrome-plated process of conductor strand according to claim 1 is characterized in that: u-152 is 55-60g/L except strength of solution in the oil-bound distemper solution tank in the described plating pre-treatment step, and temperature is 50-60 ℃, and electric current is the 1.5-3A/ root.
6. the automatic chrome-plated process of conductor strand according to claim 1, it is characterized in that: strength of solution is 40-50ml/L in the described plating pre-treatment step sulphuric acid soln groove, and temperature is 35-45 ℃.
7. the automatic chrome-plated process of conductor strand according to claim 1, it is characterized in that: the temperature of described chromium plating step Zhong Du Chrome is 50-60 ℃.
8. the automatic chrome-plated process of conductor strand according to claim 1, it is characterized in that: in the described chromium plating step Rinsing Area, electric current is the 29-32A/ root, anode is the mixing stereotype of 6-8% tin.
9. the automatic chrome-plated process of conductor strand according to claim 1 is characterized in that: the temperature in the described chromium plating step in the baking oven is 100-120 ℃.
CN2013102319746A 2013-06-13 2013-06-13 Automatic conductor strand chromium plating process Pending CN103320826A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Application Number Priority Date Filing Date Title
CN2013102319746A CN103320826A (en) 2013-06-13 2013-06-13 Automatic conductor strand chromium plating process

Publications (1)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04115422A (en) * 1990-09-05 1992-04-16 Furukawa Electric Co Ltd:The Superconductive strand
CN101575719A (en) * 2008-05-06 2009-11-11 南通市申海特种镀饰有限责任公司 Process for performing chromium plating with superconducting material
CN101831675A (en) * 2010-05-21 2010-09-15 南通市申海特种镀饰有限责任公司 Nickel plating process for superconducting materials

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04115422A (en) * 1990-09-05 1992-04-16 Furukawa Electric Co Ltd:The Superconductive strand
CN101575719A (en) * 2008-05-06 2009-11-11 南通市申海特种镀饰有限责任公司 Process for performing chromium plating with superconducting material
CN101831675A (en) * 2010-05-21 2010-09-15 南通市申海特种镀饰有限责任公司 Nickel plating process for superconducting materials

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Application publication date: 20130925

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