CN102191525A - Production process for electroplated abrasive material on surface of metal wire - Google Patents
Production process for electroplated abrasive material on surface of metal wire Download PDFInfo
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- CN102191525A CN102191525A CN 201110110896 CN201110110896A CN102191525A CN 102191525 A CN102191525 A CN 102191525A CN 201110110896 CN201110110896 CN 201110110896 CN 201110110896 A CN201110110896 A CN 201110110896A CN 102191525 A CN102191525 A CN 102191525A
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Abstract
The invention relates to a production process for electroplated abrasive material on the surfaces of a metal wire. The production process comprises the following steps: 1. carrying out chemical nickel plating treatment on the surface of a diamond; 2. preparing impactive nickel electroplating solution; 3. preparing sulfamic acid nickel plating solution and nickel-plated diamond mixed electroplating solution; 4. cleaning; 5. carrying out impactive nickel electroplating; 6. electroplating the nickel-plated diamond on the surface of the metal wire; 7. reinforcing nickel-plated diamond granules; and 8. carrying out post-electroplating treatment. The invention employs the diamond and the metal wire the surfaces of which are chemically nickel-plated as raw materials, and realizes high-speed production by using sulfamic acid nickel plating solution. The binding of the nickel-plated diamond and a nickel plating layer is identical nickel-material binding, and belongs to identical nickel-metal atomic force binding, so that the diamond has high firmness, long service life and high sawing capability.
Description
Technical field
The present invention relates to the electroplating technology field, particularly relate to metal wire material electroplating surface abrasive material production technique.
Background technology
Along with development of times, energy-conservation and strategy environmental protection is a whole world common target, embodiment as solar electrical energy generation industry (crystalline silicon is a main raw material) and LED opto-electronics (sapphire is a critical materials) is the most obvious, but when cutting silicon materials and sapphire material, mostly be band-saw diamond cutting or the interior annular saw cutting of diamond and steel wire that traditional technology is taked drive modes such as the silicon carbide mortar cutting fluid cuts.Product face type tolerance after the big and cutting of the joint-cutting of band-saw diamond cutting is very big, is not suitable for doing precise cutting processing; The annular saw cutting efficiency is low in the diamond, joint-cutting big and can not carry out the multi-disc cutting simultaneously; Steel wire drive silicon carbide mortar cutting joint-cutting is little, face type tolerance is little, can carry out multi-disc cuts simultaneously, but still have the lower problem of cutting efficiency, the very not environmental protection of silicon carbide mortar cutting fluid of using when topmost problem is cutting easily causes the generation of problem of environmental pollution; But golden steel wire (metal wire material electroplating surface diamond abrasive product) but can satisfy fully cutting efficiency height, joint-cutting little, can cut conditional requests such as multi-disc product and environmental protection simultaneously, and for other superhard fragile materials such as silicon carbide, gallium arsenide, Ceramic Composite materials, golden steel wire can cut.
The gold steel wire adopts electric plating method at one or more layers metal of metal wire surface deposition more, and in metal deposition layer consolidating material and diamond abrasive, make the partial volume of diamond abrasive exceed the metal wire surface and form golden steel wire with cutting power.Metal deposition layer is used for fixing diamond, and this settled layer is successive, and diamond particles then is used for cutting mill processing.In electroplating process, by switching on to wire, forming the electric field adsorptive power is adsorbed on wire surface with diamond particles on every side to make wire, but because diamond is an isolator, the diamond particles rate of adsorption is very slow, production efficiency is low, and diamond particles and metal deposition layer be combined into mechanical bond (discontinuity melts combine), bonding force and bonding strength are low, the hold deficiency, come off easily during the cutting product, the golden steel wire life-span is reduced; And when absorption isolator diamond particles, for the diamond particles number that makes golden steel wire surface abundant, the in the industry employing to the logical big electric current of metal wire material more, but this can make metal wire material produce burning, thereby reduce the tensile strength and the pull-off force of metal wire material, be easy to generate the broken string phenomenon when using golden steel wire cutting prod afterwards, and make and be cut product and become waste product, user's loss is great.
The method of the golden steel wire of current production has the following disadvantages:
Because the qualification of equipment and production technique causes production efficiency low; Because the qualification of equipment and production technique causes diamond to electroplate skewness at metal wire material surface, causes gauge or diameter of wire thickness tolerance excessive, cause finally being cut that the big and cutting back product surface variable thickness of the cutting waste of product causes or overproof; Diamond and metal deposition layer are mechanical bond, the bonding force deficiency; Diamond surface metal plating layer and wire surface metal deposition layer are the different metal materials bonded, the bonding force deficiency; The fixed quantity not sufficient of diamond (serving as the cutting edge effect) is enough, causes the cutting edge deficiency, the cutting power deficiency; The wire electrical current is excessive and adsorb the abundant adamantine while, causes wire to be easy to generate " electricity burns tired " and brittle failure easily; Metal deposition layer and virgin metal silk bonding strength deficiency, bonding force is poor, causes metal deposition layer to pop easily or comes off; Owing to adopt a watt type plating bath, cause the metal deposition layer internal stress big, when golden steel wire mill was cut product, because bending wire during the excessive cabling in addition of frictional force, metal deposition layer was easy to pop and causes diamond to come off easily; Adopt the diamond of narrower size range or the diamond of single granularity, after diamond weares and teares or breaks in golden steel wire use, do not have follow-up diamond to proceed mill and cut, cause golden steel wire short work-ing life than small grain size; Be mingled with different organic impurities or scrap metal impurity in the electroplating process in the coating, cause coating discontinuous, snappiness reduces, when golden steel wire mill is cut product, because the cabling bending, and the easy blistering of metal deposition layer or come off.
Summary of the invention
The objective of the invention is to avoid weak point of the prior art and a kind of material electroplating surface abrasive material production technique is provided, can high-speed and continuous production, and be evenly distributed and bonding strength height, long service life by the silk material surface diamond that this technology is made.
Purpose of the present invention realizes by following technical measures.
Metal wire material electroplating surface abrasive material production technique may further comprise the steps:
Step 1: the diamond surface chemical nickel plating is handled
Diamond particles is carried out chemical nickel plating on surface handle, obtain nickel plating clothing diamond particles, described diamond particles nickel plating weightening finish 5%-80%;
Step 2: impact the preparation of nickel plating solution
With nickelous chloride and hydrochloric acid respectively according to 100-500 grams per liter and 10-240 milliliter/liter ratio dissolve in deionized water or distilled water, be made into the impact nickel plating solution;
Step 3: the preparation of nickel aminosulfonic bath and nickel plating clothing diamond mixing electroplating solution
With nickel sulfamic acid, nickelous chloride and boric acid respectively according to the 100-1500 milliliter/liter, 1-20 grams per liter and 10-100 grams per liter 20 ℃～80 ℃ down and deionized water or distilled water be mixed with nickel aminosulfonic bath;
Get described nickel plating clothing diamond particles and be mixed with nickel plating clothing diamond mixing electroplating solution according to mass ratio 1:100-10000 with nickel aminosulfonic bath;
Step 4: clean
Metal wire material is carried out oil removal treatment by basic solution, again by the acidic solution activation treatment that eliminates rust;
Step 5: impact nickel and electroplate
The metal wire material that the step 4 clean is crossed is by described impact nickel plating solution, and metal wire material is switched on as negative electrode, and the nickel plate is switched on as anode, makes the metal wire material surface form nickel metal deposition transition layer, then cleans;
Step 6: nickel is plated the clothing diamond particles electroplate on the metal wire material surface
The metal wire material that will have described nickel metal deposition transition layer is by described nickel plating clothing diamond mixing electroplating solution, metal wire material is switched on as negative electrode, the nickel plate is switched on as anode, make the described nickel plating of metal wire material surface adsorption clothing diamond particles, simultaneously the nickel metal also is electroplated onto the surface of metal wire material with described nickel metal deposition transition layer;
Step 7: thickening reinforcing wire plating clothing diamond particles
The metal wire material that there is nickel plating clothing diamond particles on the surface that step 6 is obtained is by described nickel aminosulfonic bath, and wire is switched on as negative electrode, and the nickel plate is switched on as anode;
Step 8: electroplate aftertreatment
The product that step 7 is obtained is by washing and dry last take-up and warehouse-in.
In the step 4, described basic solution be concentration 50-200 grams per liter remove oil-bound distemper solution, described acidic solution is the acid salt solution of 30-200 grams per liter.
In the step 5, electroplating voltage is the 2-5 volt, and current density is 20-60ASD, and electroplating time is 5-20 second.
In the step 6, electroplating voltage 3.2-9 volt, electroplating time 0.3-3.5 minute.
In the step 7, electroplating voltage 2.6-9 volt, electroplating time 3.8-8 minute.
Step 5 is impacted nickel plating solution, step 6 nickel plating clothing diamond mixing electroplating solution and step 7 nickel aminosulfonic bath and is arranged in the coating bath respectively, strainer tube is set respectively in the coating bath, described strainer tube leads to and is circulated throughout filter pump, the described filter pump that is circulated throughout filters the electroplate liquid in the coating bath, the corresponding coating bath of pumped back again after the organic impurities that electroplate liquid is mingled with filters out.
Further, also comprise electrolysis step, adopt the current density of 0.1-0.5ASD that electroplate liquid is carried out continuity or periodically electrolysis in the described electrolysis step.
The particle size range of described diamond particles is the 0.4-60 micron, and described metal wire material is the former steel wire of diameter 0.08-0.4 millimeter.
In the step 5, the thickness of described nickel metal deposition transition layer is the 0.4-1.2 micron.
In the step 6, to stirring in the described nickel plating clothing diamond mixing electroplating solution.
Silk material electroplating surface abrasive material production technique of the present invention, the diamond of employing chemical nickel plating on surface and wire are as raw material, can realize high speed production (1-50 rice/minute) by nickel aminosulfonic bath, make diamond be attracted to wire surface and the diamond of thickening reinforcing in time fast, uniformly, thereby realize high speed production, nickel plating clothing diamond is that nickel material of the same race combines with nickel coating, belong to nickel atoms metal power of the same race combination, the firm degree height of diamond, product life is long, the sawing ability is good; Be applicable to high speed production, alternative existing golden steel wire production technique.
Embodiment
The invention will be further described with the following Examples.
The quality of gold steel wire is mainly determined by thickness, coating and the wire of the internal stress size of the compactness of coating, coating, coating and adamantine bonding strength, adamantine distribution consistency degree, the pliability of golden steel wire, the continuity of coating, adamantine firm degree or the like.
The output of gold steel wire is mainly decided by the speed that the sedimentation velocity and the diamond of coating is adsorbed.
Embodiment 1
The metal wire material electroplating surface abrasive material production technique of present embodiment, step comprises:
The first step: the diamond surface chemical nickel plating is handled
With size range is that the diamond particles of 30-40 micron carries out chemical nickel plating on surface and handles, and makes it the densification of coating surface one deck and nickel dam that bonding strength is high, finally forms the nickel plating clothing diamond particles of nickel plating weightening finish 56%.
Second step: impact the preparation of nickel plating solution
Nickelous chloride and hydrochloric acid are dissolved in deionized water or distilled water according to the ratio of 200 grams per liters and 100 milliliters/liter respectively, be made into the impact nickel plating solution.
The 3rd step: nickel aminosulfonic bath and nickel plate the preparation of clothing diamond mixing electroplating solution
With nickel sulfamic acid, nickelous chloride and boric acid respectively according to 350 milliliters/liter, 6 grams per liters and 10 grams per liters 70 ℃ down and deionized water or distilled water be mixed with nickel aminosulfonic bath;
Get described nickel plating clothing diamond particles and be mixed with nickel plating clothing diamond mixing electroplating solution according to mass ratio 1:1500, in this solution, whipping appts is set simultaneously with nickel aminosulfonic bath.
The 4th step: clean
The former steel wire of getting 0.18 mm dia by concentration be 120 grams per liters remove oil-bound distemper solution, carry out the metallic surface oil removal treatment and clean; Be the acid salt solution of 30 grams per liters by concentration subsequently, carry out metallic surface rust cleaning and activation treatment and cleaning.Describedly remove oil-bound distemper solution and acid salt solution is respectively basic solution and acidic solution, belong to this area common agents, market is on sale.
The 5th step: impact nickel and electroplate (bottoming)
The described impact nickel plating solution that the former steel wire that clean is crossed prepared by second step, former steel wire is switched on as negative electrode, the nickel plate is switched on as anode, electroplating voltage is 2.5 volts, current density is 42ASD, electroplating time was 6 seconds, thereby made wire surface form the nickel metal deposition transition layer of 0.5 micron thickness of one deck densification, then cleaned.
The 6th step: nickel plating clothing diamond particles is electroplated on the metal wire material surface
The former steel wire that will have described nickel metal deposition transition layer goes on foot the described nickel plating clothing diamond mixing electroplating solution for preparing by the 3rd, former steel wire is as negative electrode (4 volts of the electroplating voltages of switching on, electroplating time 2 minutes), the nickel plate is switched on as anode, make former steel wire surface adsorption that abundant and equally distributed described nickel plating clothing diamond particles be arranged, meanwhile the nickel metal also has been electroplated onto the surface of the former steel wire with described nickel metal deposition transition layer, stirs in the electroplating process.
The 7th step: thickening reinforcing wire plating clothing diamond particles
The former steel wire that there is nickel plating clothing diamond particles on the 6th surface that obtain of step is by described nickel aminosulfonic bath, and former steel wire is switched on (3 volts of voltages, thickening electroplating time 7 minutes) as negative electrode, to the nickel plate as the anode plating of switching on.
The 8th step: electroplate aftertreatment
Goods after step 7 finished are by washing and dry; Obtaining diameter is the golden steel wire of 0.26 millimeter (+/-5 microns), last take-up warehouse-in.
The average pull-off force of former steel wire is 86 newton, and the average pull-off force of finished product gold steel wire is 86-88 newton, is the 100-105% of former steel wire pull-off force.The golden steel wire cutting diameter that adopts this technology manufacturing is 50 millimeters a sapphire crystal bar, linear velocity is 12 meter per seconds, cut 50 sapphires simultaneously, line tension is 34 newton, the angle of the waving during cutting of gold steel wire is 5 degree, can obtain thickness error less than 15 microns, sinuousness is less than 20 microns sapphire wafer, work-ing life 10 times.Under the contrast, the golden steel wire cutting of the U.S.'s 0.26 mm dia only has 6 work-ing life.
Embodiment 2
The metal wire material electroplating surface abrasive material production technique of present embodiment, step comprises:
The first step: the diamond surface chemical nickel plating is handled
The diamond particles of size range 50-60um is carried out the chemical nickel plating on surface processing, make it the densification of coating surface one deck and nickel dam that bonding strength is high, finally form the nickel plating clothing diamond particles of nickel plating weightening finish 80%.
Second step: impact the preparation of nickel plating solution
Nickelous chloride and hydrochloric acid are dissolved in deionized water or distilled water according to the ratio of 100 grams per liters and 240 milliliters/liter respectively, be made into the impact nickel plating solution.
The 3rd step: nickel aminosulfonic bath and nickel plate the preparation of clothing diamond mixing electroplating solution
With nickel sulfamic acid, nickelous chloride and boric acid respectively according to 800 milliliters/liter, 15 grams per liters and 60 grams per liters 80 ℃ down and deionized water or distilled water be mixed with nickel aminosulfonic bath;
Nickel is plated the clothing diamond particles be mixed with nickel plating clothing diamond mixing electroplating solution according to mass ratio 1:10000, in this solution, increase mechanical stirring device simultaneously with nickel aminosulfonic bath.
The 4th step: clean
The former steel wire of getting 0.25 mm dia is that the oil-bound distemper solution that removes of 70 grams per liters carries out the metallic surface oil removal treatment and cleans by concentration, is that the acid salt solution of 100 grams per liters carries out metallic surface rust cleaning and activation treatment and cleaning by concentration subsequently.
The 5th step: impact nickel and electroplate (bottoming)
The described impact nickel plating solution that the former steel wire that clean is crossed prepared by second step, switch on for former steel wire as negative electrode, switch on for the nickel plate as anode, electroplating voltage is 5 volts, current density is 60ASD, electroplating time was 7 seconds, thereby made wire surface form the nickel metal deposition transition layer of 1.2 micron thickness of one deck densification, then cleaned.
The 6th step: nickel is plated the clothing diamond particles electroplate on the metal wire material surface
To there be the former steel wire of nickel metal deposition transition layer to go on foot the nickel plating clothing diamond mixing electroplating solution for preparing by the 3rd, give former steel wire as negative electrode (8.5 volts of the electroplating voltages of switching on, electroplating time 3.5 minutes) and to the nickel plate switch on as anode, make former steel wire surface adsorption that abundant and equally distributed nickel plating clothing diamond particles be arranged, the nickel metal also has been electroplated onto the surface of the former steel wire with described nickel metal deposition transition layer simultaneously.
The 7th step: thickening reinforcing wire plating clothing diamond particles
The former steel wire that there is nickel plating clothing diamond particles on the 6th surface that obtain of step is by described nickel aminosulfonic bath, give wire switch on (9 volts of electroplating voltages, electroplating time 8 minutes) as negative electrode and to the nickel plate as the anode plating of switching on.
The 8th step: electroplate aftertreatment
The product that step 7 is obtained is by washing and dry; Last take-up and warehouse-in, obtaining diameter is the golden steel wire of 0.36 millimeter (+/-5 microns).
The average pull-off force of former steel wire is 150 newton, the average pull-off force of finished product gold steel wire is 150-158 newton, be the 100-105% of former steel wire pull-off force, the golden steel wire cutting diameter that adopts this technology manufacturing is 200 millimeters a silicon single crystal rod, linear velocity is 8 meter per seconds, cuts 16 silicon single crystal rods simultaneously, and line tension is 80 newton, can obtain tolerance less than+/-0.2 millimeter silicon single crystal square rod, work-ing life 2 times; In contrast, adopt the golden steel wire cutting of the U.S.'s 0.36 mm dia, work-ing life 1 time.
Embodiment 3
The first step: the diamond surface chemical nickel plating is handled
With size range is that the diamond particles of 0.4-20um carries out chemical nickel plating on surface and handles, and makes it the densification of coating surface one deck and nickel dam that bonding strength is high, finally forms the nickel plating clothing diamond particles of nickel plating weightening finish 5%.
Second step: impact the preparation of nickel plating solution
Nickelous chloride and hydrochloric acid are dissolved in deionized water or distilled water according to the ratio of 100 grams per liters and 200 milliliters/liter respectively, be made into the impact nickel plating solution.
The 3rd step: nickel aminosulfonic bath and nickel plate the preparation of clothing diamond mixing electroplating solution
With nickel sulfamic acid, nickelous chloride and boric acid respectively according to 100 milliliters/liter, 16 grams per liters and 65 grams per liters 20 ℃ down and deionized water or distilled water be mixed with nickel aminosulfonic bath;
Described nickel plating clothing diamond particles is mixed with nickel plating clothing diamond mixing electroplating solution with described nickel aminosulfonic bath according to mass ratio 1:100, in this solution, mechanical stirring device is set simultaneously.
The 4th step: clean
The former steel wire of getting 0.12 mm dia is that the oil-bound distemper solution that removes of 50 grams per liters carries out the metallic surface oil removal treatment and cleans by concentration, is that the acid salt solution of 80 grams per liters carries out metallic surface rust cleaning and activation treatment and cleaning by concentration subsequently.
The 5th step: impact nickel and electroplate (bottoming)
The described impact nickel plating solution that the former steel wire that clean is crossed prepared by second step, switch on for former steel wire as negative electrode, switch on for the nickel plate as anode, electroplating voltage is 2.2 volts, current density is 58ASD, electroplating time was 5 seconds, thereby made former steel wire surface form the nickel metal deposition transition layer of 0.6 micron thickness of one deck densification, then cleaned.
The 6th step: nickel plating clothing diamond particles is electroplated on the metal wire material surface
The former steel wire that will have nickel metal deposition transition layer goes on foot the described nickel plating clothing diamond mixing electroplating solution for preparing by the 3rd, give former steel wire as negative electrode (3.2 volts of the electroplating voltages of switching on, electroplating time 1.5 minutes), switch on for the nickel plate as anode, make former steel wire surface adsorption that abundant and equally distributed nickel plating clothing diamond particles be arranged, the nickel metal also has been electroplated onto the former steel wire of nickel metal deposition transition layer surface has been arranged simultaneously.
The 7th step: thickening reinforcing wire plating clothing diamond particles
The former steel wire that there is nickel plating clothing diamond particles on the 6th surface that obtain of step is by described nickel aminosulfonic bath, give former steel wire switch on (2.6 volts of electroplating voltages, electroplating time 3.8 minutes) as negative electrode and to the nickel plate as the anode plating of switching on.
The 8th step: electroplate aftertreatment
The product that step 7 is obtained is by washing and dry; Last take-up and warehouse-in, obtaining diameter is the golden steel wire of 0.14 millimeter (+/-3 microns).
The average pull-off force of former steel wire is 45 newton, the average pull-off force of finished product gold steel wire is 45-47 newton, be the 100-105% of former steel wire pull-off force, the golden steel wire cutting diameter that adopts this technology manufacturing is 125 millimeters a silicon single crystal rod, and linear velocity is 8 meter per seconds, and 2 undercuts cut 300 millimeters long silicon single crystal rods, line tension is 20 newton, can obtain thickness error less than 25 microns, sinuousness is less than 50 microns silicon single crystal wafer, work-ing life 2 times.In contrast, adopt the golden steel wire cutting of the U.S.'s 0.14 mm dia, work-ing life 1 time.
Embodiment 4
The first step: the diamond surface chemical nickel plating is handled
With size range is that the diamond particles of 0.4-20um carries out chemical nickel plating on surface and handles, and makes it the densification of coating surface one deck and nickel dam that bonding strength is high, finally forms the nickel plating clothing diamond particles of nickel plating weightening finish 30%.
Second step: impact the preparation of nickel plating solution
Nickelous chloride and hydrochloric acid are dissolved in deionized water or distilled water according to the ratio of 500 grams per liters and 200 milliliters/liter respectively, be made into the impact nickel plating solution.
The 3rd step: nickel aminosulfonic bath and nickel plate the preparation of clothing diamond mixing electroplating solution
With nickel sulfamic acid, nickelous chloride and boric acid respectively according to 1500 milliliters/liter, 20 grams per liters and 100 grams per liters 60 ℃ down and deionized water or distilled water be mixed with nickel aminosulfonic bath;
Described nickel plating clothing diamond particles is mixed with nickel plating clothing diamond mixing electroplating solution with described nickel aminosulfonic bath according to mass ratio 1:1000, in this solution, mechanical stirring device is set simultaneously.
The 4th step: clean
The former steel wire of getting 0.1 mm dia is that the oil-bound distemper solution that removes of 200 grams per liters carries out the metallic surface oil removal treatment and cleans by concentration, is that the acid salt solution of 200 grams per liters carries out metallic surface rust cleaning and activation treatment and cleaning by concentration subsequently.
The 5th step: impact nickel and electroplate (bottoming)
The described impact nickel plating solution that the former steel wire that clean is crossed prepared by second step, switch on for former steel wire as negative electrode, switch on for the nickel plate as anode, electroplating voltage is 2 volts, current density is 20ASD, electroplating time was 5 seconds, thereby made former steel wire surface form the nickel metal deposition transition layer of 0.6 micron thickness of one deck densification, then cleaned.
The 6th step: nickel is plated the clothing diamond particles electroplate on the metal wire material surface
The former steel wire that will have nickel metal deposition transition layer goes on foot the described nickel plating clothing diamond mixing electroplating solution for preparing by the 3rd, give former steel wire as negative electrode (3.2 volts of the electroplating voltages of switching on, electroplating time 0.3 minute), switch on for the nickel plate as anode, make former steel wire surface adsorption that abundant and equally distributed nickel plating clothing diamond particles be arranged, the nickel metal also has been electroplated onto the former steel wire of nickel metal deposition transition layer surface has been arranged simultaneously.
The 7th step: thickening reinforcing wire plating clothing diamond particles
The former steel wire that there is nickel plating clothing diamond particles on the 6th surface that obtain of step is by described nickel aminosulfonic bath, give former steel wire switch on (2.6 volts of electroplating voltages, electroplating time 3.8 minutes) as negative electrode and to the nickel plate as the anode plating of switching on.
The 8th step: electroplate aftertreatment
The product that step 7 is obtained is by washing and dry; Last take-up and warehouse-in, obtaining diameter is the golden steel wire of 0.13 millimeter (+/-3 microns).
The average pull-off force of former steel wire is 32 newton, the average pull-off force of finished product gold steel wire is 32-34 newton, be the 100-105% of former steel wire pull-off force, the golden steel wire cutting diameter that adopts this technology manufacturing is 125 millimeters a silicon single crystal rod, and linear velocity is 8 meter per seconds, and 2 undercuts cut 300 millimeters long silicon single crystal rods, line tension is 20 newton, can obtain thickness error less than 25 microns, sinuousness is less than 50 microns silicon single crystal wafer, work-ing life 2 times.In contrast, adopt the golden steel wire cutting of the U.S.'s 0.13 mm dia, work-ing life 1 time.
Embodiment 5
The metal wire material electroplating surface abrasive material production technique of present embodiment, step comprises:
The first step: the diamond surface chemical nickel plating is handled
The diamond particles of size range 50-60um is carried out the chemical nickel plating on surface processing, make it the densification of coating surface one deck and nickel dam that bonding strength is high, finally form the nickel plating clothing diamond particles of nickel plating weightening finish 15%.
Second step: impact the preparation of nickel plating solution
Nickelous chloride and hydrochloric acid are dissolved in deionized water or distilled water according to the ratio of 220 grams per liters and 150 milliliters/liter respectively, be made into the impact nickel plating solution.
The 3rd step: nickel aminosulfonic bath and nickel plate the preparation of clothing diamond mixing electroplating solution
With nickel sulfamic acid, nickelous chloride and boric acid respectively according to 700 milliliters/liter, 17 grams per liters and 65 grams per liters 55 ℃ down and deionized water or distilled water be mixed with nickel aminosulfonic bath;
Nickel is plated the clothing diamond particles be mixed with nickel plating clothing diamond mixing electroplating solution according to mass ratio 1:5000, in this solution, increase mechanical stirring device simultaneously with nickel aminosulfonic bath.
The 4th step: clean
The former steel wire of getting 0.30 mm dia is that the oil-bound distemper solution that removes of 80 grams per liters carries out the metallic surface oil removal treatment and cleans by concentration, is that the acid salt solution of 150 grams per liters carries out metallic surface rust cleaning and activation treatment and cleaning by concentration subsequently.
The 5th step: impact nickel and electroplate (bottoming)
The described impact nickel plating solution that the former steel wire that clean is crossed prepared by second step, switch on for former steel wire as negative electrode, switch on for the nickel plate as anode, electroplating voltage is 4 volts, current density is 32ASD, electroplating time was 10 seconds, thereby made wire surface form the nickel metal deposition transition layer of 1 micron thickness of one deck densification, then cleaned.
The 6th step: nickel is plated the clothing diamond particles electroplate on the metal wire material surface
To there be the former steel wire of nickel metal deposition transition layer to go on foot the nickel plating clothing diamond mixing electroplating solution for preparing by the 3rd, give former steel wire as negative electrode (6 volts of the electroplating voltages of switching on, electroplating time 0.4 minute) and to the nickel plate switch on as anode, make former steel wire surface adsorption that abundant and equally distributed nickel plating clothing diamond particles be arranged, the nickel metal also has been electroplated onto the surface of the former steel wire with described nickel metal deposition transition layer simultaneously.
The 7th step: thickening reinforcing wire plating clothing diamond particles
The former steel wire that there is nickel plating clothing diamond particles on the 6th surface that obtain of step is by described nickel aminosulfonic bath, give wire switch on (5 volts of electroplating voltages, electroplating time 7 minutes) as negative electrode and to the nickel plate as the anode plating of switching on.
The 8th step: electroplate aftertreatment
The product that step 7 is obtained is by washing and dry; Last take-up and warehouse-in, obtaining diameter is the golden steel wire of 0.40 millimeter (+/-5 microns).
The average pull-off force of former steel wire is 205 newton, the average pull-off force of finished product gold steel wire is 205-215 newton, be the 100-105% of former steel wire pull-off force, the golden steel wire cutting diameter that adopts this technology manufacturing is 200 millimeters a silicon single crystal rod, linear velocity is 10 meter per seconds, cuts 16 silicon single crystal rods simultaneously, and line tension is 85 newton, can obtain tolerance less than+/-0.3 millimeter silicon single crystal square rod, work-ing life 2 times; In contrast, adopt the golden steel wire cutting of the U.S.'s 0.40 mm dia, work-ing life 1 time.
The present invention compares with existing preparation method has following advantage:
1, production rate height.Diamond particles chemical nickel plating on surface (be called for short nickel plating clothing diamond) can make diamond have conductivity, is plated in wire surface on easily with diamond particles when switch on to wire, makes diamond distribution evenly and can reach the effect of high speed production.It is wire electronickelling metal level that the present invention adopts nickel sulfamic acid solution, and watt type plating bath can be realized high speed production efficiency, thereby can improve the output of golden steel wire in equal time.
2, diamond particles is in conjunction with firm.Diamond surface is through behind the chemical nickel plating, diamond particles and chemical nickel coating have high bonding force, and can go on foot the nickel electrodeposition of metals formation successive that forms, consistent nickel metal plating of the same race with the 5th follow-up nickel metal deposition transition layer that is used to feel secure, the 6th step and the 7th that goes on foot formation, belong to nickel atoms metal power of the same race combination, can guarantee that diamond particles is securely fixed in golden steel wire surface, difficult drop-off during cutting has prolonged work-ing life of golden steel wire.It is wire electronickelling metal level that the present invention adopts nickel sulfamic acid solution, this nickel metal layer galvanized nickel metal layer of watt type plating bath has the coating internal stress minimum, pliability and snappiness are little, advantages such as fragility is little, cause coating being impacted or during big frictional force, coating is not easy cracking, diamond advantage such as be not easy to come off.
3, golden steel wire intensity height.In the production technique of the present invention, former steel wire only needs just can adsorb the abundant nickel plating clothing diamond particles of anticipating by relative less current density, because the diamond particles of nickel plating clothing has become conductor, therefore movement velocity is still very fast under less relatively electroplating voltage effect.With respect to the diamond particles that does not have the nickel plating clothing as isolator, do not need to adsorb diamond particles by bigger current density, so former steel wire is unlikely to produce the burning fatigue phenomenon, can not cause pull-off force to reduce and easy brittle failure phenomenon, the work-ing life of having improved golden steel wire because of burning.
4, golden steel wire long service life.The present invention adopts the diamond particles of the size range of relative broad to be plated on the surface of former steel wire, the gold steel wire in the cutting prod process owing to can be worn earlier or break earlier than the diamond of volume particle size, can make than the nickel plating clothing diamond particles of small grain size and proceed cutting prod, thereby improve the work-ing life of golden steel wire; In electroplating process, have outside the coating bath to adopt and be circulated throughout filter pump, can filter out the organic impurities that is mingled with in the plating bath, adopt low current density (plating bath to be carried out continuity or periodically electrolysis can be removed scrap metal impurity with 0.1-0.5ASD), can make coating continuous, improve the coating snappiness, when golden steel wire mill is cut product, have bending during owing to cabling, metal plating is not easy blistering or comes off, and has improved the work-ing life and the quality of golden steel wire.
Should be noted that at last; above embodiment only is used to illustrate technical scheme of the present invention but not limiting the scope of the invention; although the present invention has been done detailed description with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can make amendment or be equal to replacement technical scheme of the present invention, and not break away from the essence and the scope of technical solution of the present invention.
Claims (10)
1. metal wire material electroplating surface abrasive material production technique is characterized in that: may further comprise the steps:
Step 1: the diamond surface chemical nickel plating is handled
Diamond particles is carried out chemical nickel plating on surface handle, obtain nickel plating clothing diamond particles, described diamond particles nickel plating weightening finish 5%-80%;
Step 2: impact the preparation of nickel plating solution
With nickelous chloride and hydrochloric acid respectively according to 100-500 grams per liter and 10-240 milliliter/liter ratio dissolve in deionized water or distilled water, be made into the impact nickel plating solution;
Step 3: the preparation of nickel aminosulfonic bath and nickel plating clothing diamond mixing electroplating solution
With nickel sulfamic acid, nickelous chloride and boric acid respectively according to the 100-1500 milliliter/liter, 1-20 grams per liter and 10-100 grams per liter 20 ℃～80 ℃ down and deionized water or distilled water be mixed with nickel aminosulfonic bath;
Get described nickel plating clothing diamond particles and be mixed with nickel plating clothing diamond mixing electroplating solution according to mass ratio 1:100-10000 with nickel aminosulfonic bath;
Step 4: clean
Metal wire material is carried out oil removal treatment by basic solution, again by the acidic solution activation treatment that eliminates rust;
Step 5: impact nickel and electroplate
The metal wire material that the step 4 clean is crossed is by described impact nickel plating solution, and metal wire material is switched on as negative electrode, and the nickel plate is switched on as anode, makes the metal wire material surface form nickel metal deposition transition layer, then cleans;
Step 6: nickel is plated the clothing diamond particles electroplate on the metal wire material surface
The metal wire material that will have described nickel metal deposition transition layer is by described nickel plating clothing diamond mixing electroplating solution, metal wire material is switched on as negative electrode, the nickel plate is switched on as anode, make the described nickel plating of metal wire material surface adsorption clothing diamond particles, simultaneously the nickel metal also is electroplated onto the surface of metal wire material with described nickel metal deposition transition layer;
Step 7: thickening reinforcing wire plating clothing diamond particles
The metal wire material that there is nickel plating clothing diamond particles on the surface that step 6 is obtained is by described nickel aminosulfonic bath, and wire is switched on as negative electrode, and the nickel plate is switched on as anode;
Step 8: electroplate aftertreatment
The product that step 7 is obtained is by washing and dry last take-up and warehouse-in.
2. metal wire material electroplating surface abrasive material production technique according to claim 1 is characterized in that: in the step 4, described basic solution be concentration 50-200 grams per liter remove oil-bound distemper solution, described acidic solution is the acid salt solution of 30-200 grams per liter.
3. metal wire material electroplating surface abrasive material production technique according to claim 1 is characterized in that: in the step 5, electroplating voltage is the 2-5 volt, and current density is 20-60ASD, and electroplating time is 5-20 second.
4. metal wire material electroplating surface abrasive material production technique according to claim 1 is characterized in that: in the step 6, and electroplating voltage 3.2-9 volt, electroplating time 0.3-3.5 minute.
5. metal wire material electroplating surface abrasive material production technique according to claim 1 is characterized in that: in the step 7, and electroplating voltage 2.6-9 volt, electroplating time 3.8-8 minute.
6. metal wire material electroplating surface abrasive material production technique according to claim 1, it is characterized in that: step 5 is impacted nickel plating solution, step 6 nickel plating clothing diamond mixing electroplating solution and step 7 nickel aminosulfonic bath and is arranged in the coating bath respectively, strainer tube is set respectively in the coating bath, described strainer tube leads to and is circulated throughout filter pump, the described filter pump that is circulated throughout filters the electroplate liquid in the coating bath, the corresponding coating bath of pumped back again after the organic impurities that electroplate liquid is mingled with filters out.
7. metal wire material electroplating surface abrasive material production technique according to claim 6 is characterized in that: also comprise electrolysis step, adopt the current density of 0.1-0.5ASD that electroplate liquid is carried out continuity or periodically electrolysis in the described electrolysis step.
8. metal wire material electroplating surface abrasive material production technique according to claim 1, it is characterized in that: the particle size range of described diamond particles is the 0.4-60 micron, described metal wire material is the former steel wire of diameter 0.08-0.4 millimeter.
9. metal wire material electroplating surface abrasive material production technique according to claim 1 is characterized in that: in the step 5, the thickness of described nickel metal deposition transition layer is the 0.4-1.2 micron.
10. metal wire material electroplating surface abrasive material production technique according to claim 1 is characterized in that: in the step 6, to stirring in the described nickel plating clothing diamond mixing electroplating solution.
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