CN105196196B - A kind of plated diamond grinding wheel of grinding material sequential arrangement - Google Patents
A kind of plated diamond grinding wheel of grinding material sequential arrangement Download PDFInfo
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- CN105196196B CN105196196B CN201510607685.0A CN201510607685A CN105196196B CN 105196196 B CN105196196 B CN 105196196B CN 201510607685 A CN201510607685 A CN 201510607685A CN 105196196 B CN105196196 B CN 105196196B
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Abstract
The invention discloses a kind of plated diamond grinding wheel of grinding material sequential arrangement, the plated diamond grinding wheel includes grinding wheel base body and abrasive material, and the grinding wheel base body surface offers the blind hole of ordered arrangement；The abrasive material includes abrasive material and the coat of metal, and the root of the abrasive material is embedded in blind hole, and the coat of metal is deposited in grinding wheel base body surface and blind hole, for concretion abrasive.The plated diamond grinding wheel of the present invention, realizes regular arrangement of the abrasive material on grinding wheel base body surface, solve thes problems, such as that abrasive material distribution density is uneven, disorderly and unsystematic in traditional skive abrasive material；By extruding of the diamond abrasive to blind hole, filling effect, coating, matrix are added to the hold of abrasive material, wheel life is improved 15%~20%；Abrasive material forms good chip removal path in the ordered arrangement of matrix surface, avoids and the phenomenon of workpieces processing burn occurs because abrasive dust blocks, improves grinding quality.
Description
Technical field
The invention belongs to superhard material products technical field, and in particular to a kind of electroplated diamond sand of grinding material sequential arrangement
Wheel.
Background technology
Plated diamond grinding wheel is the skive made of the method for electro-deposition, and stone layer contains Buddha's warrior attendant stone mill
Material, the coat of metal, diamond abrasive are fixedly arranged on matrix by the coat of metal.In electroplating process, metal ion is constantly in negative electrode table
Face is separated out, and abrasive material is placed in cathode surface, and gradually the deposited coat of metal is plated；By thickening step, most diamond at last
It is fixed on matrix, forms the composite deposite with grinding function, that is, plated diamond grinding wheel is made.Plated diamond grinding wheel has
There is an individual layer abrasive construction, " blade " directly contacts workpiece surface in grinding process, and grinding is sharp, high in machining efficiency.
Need to undergo preplating, upper sand using conventional method manufacture plated diamond grinding wheel, thicken three electroplating work procedures, wherein
Upper sand is most important process.At present, the upper sand mode of plated diamond grinding wheel mainly has stucco method and sand buring method.Stucco method is
Grinding wheel base body surface is placed in plating solution upward, is sprinkling upon sand above with small spoon or pipette, to spread uniform and thin, thickness one
As 1-2mm；If arc surface or more than one surfacing, then go up to turn an angle behind a face and continued upper sand.It is right
In the diamond abrasive that particle diameter is thicker, sand on a part of region of plating required for stucco method can only give matrix every time.Treat this portion
Sand finishes on subregion, grinding wheel base body is spun upside down with axial rotation to change sand on another part region.Period needs to count
It is secondary to unload sand, and matrix exposure may be made when upset in atmosphere, its surface can generate very thin oxide-film, so as to lead
Emery wheel is caused to produce the phenomenon of " decortication " in the course of work is ground.Sand buring method is adapted to small and simple workpiece, is by grinding wheel base body
Not plated part is insulated, and need to be plated position and is embedded in diamond abrasive.The current density of sand buring method requirement is small, and upper sand consolidation is slow, expends
Time is grown.Tend not to all cover plating area, it is necessary to stop-off or secondary bury sand in addition, once burying sand.No matter use
Stucco method or sand buring method, entirely the upper sand process consuming time is longer, and also inadequate even compact-some places are thick for upper sand
Close, some places are sparse.No matter stucco or sand is buried, be required for repeatedly rotating grinding wheel base body, change face, negative electrode is led during this period
Line, fixture, human users are improper etc. to rub abrasive material, cause the generation for lacking sand phenomenon.Plated diamond grinding wheel is also present
The problem of be that the production time is long, thickening process need to expend a few hours or even the time of several days.
In addition, traditional plated diamond grinding wheel, as shown in figure 1, including grinding wheel base body 1 and abrasive material, the abrasive material
Including diamond abrasive 3 and the coat of metal 4, the coat of metal 4 is deposited on the surface of grinding wheel base body 1, by disorderly arranged diamond
Abrasive material 3 is fixedly arranged on the surface of grinding wheel base body 1.Plated diamond grinding wheel compares hot pressing sintering metal binding agent sand wheel and ceramic junction
Mixture wheel life is short, and abrasive material comes off fast, small to the hold of diamond abrasive, effective grinding that main cause is the coat of metal
Grain protruding height it is small.Therefore, shorten electroplating time, improve coating to the hold of abrasive material and the height of grain being effectively ground
It is the scheme for solving plated diamond grinding wheel existing issue.
The content of the invention
It is an object of the invention to provide a kind of plated diamond grinding wheel of grinding material sequential arrangement, solves existing electroplated diamond
The problem of emery wheel abrasive material hold is small, abrasive material height of protrusion is small, service life is short.
In order to realize the above object the technical solution adopted in the present invention is：
A kind of plated diamond grinding wheel of grinding material sequential arrangement, including grinding wheel base body and abrasive material, the grinding wheel base body table
Face offers the blind hole of ordered arrangement；The abrasive material includes abrasive material and the coat of metal, and the root of abrasive material is in blind hole, metal
Coating is deposited in grinding wheel base body surface and blind hole, for concretion abrasive.
The blind hole is in grinding wheel base body rule of surface ordered arrangement.
The depth of the blind hole is the 20%~30% of average grit diameter, and aperture is 0.5mm~1.0mm.
The pitch of holes of the blind hole is 1~2 times of abrasive material particle mean size.
The thickness of the coat of metal is the 10%~25% of abrasive material particle mean size.The thickness of the coat of metal is except blind
Outside hole, the thickness of coating on grinding wheel base body surface, blind through-hole plating is disregarded.The coat of metal is preferably metallic nickel plated layer.
In above-mentioned plated diamond grinding wheel, abrasive material is monolayer alignment；The embedment rate of abrasive material is 40%~50%.
The abrasive material is diamond abrasive；The abrasive material includes but is not limited to 40/45,35/40,30/35,25/30,18/
The diamond abrasive of 20 5 grain size numbers.
A kind of preparation method of the plated diamond grinding wheel of above-mentioned grinding material sequential arrangement, comprises the following steps：
1) perforate：The blind hole of ordered arrangement is opened up on grinding wheel base body surface, obtains processing matrix；
2) chemical plating：Processing matrix obtained by step 1) is subjected to chemical plating, makes blind via bottom and side wall deposition metal preplating
Layer, obtains preplating matrix；
3) sand on：The diamond abrasive of excess is placed in the surface of preplating matrix obtained by step 2) and rolled, makes mill
Expect in bottom insertion blind hole, obtain sand matrix；
4) plating thickeies：After upper sand matrix is activated obtained by step 3), it is placed in electroplate liquid and is electroplated, make emery wheel
Deposited metal coating, abrasive material is fixedly arranged in blind hole and forms abrasive material in matrix surface and blind hole, is produced.
In step 1), blind hole is opened up on grinding wheel base body surface using pore discharge technology.Pore discharge technology opens up blind hole
Depth be 0.5mm~2.0mm.In above-mentioned preparation method, pore discharge technology can use this area conventional technique and equipment
Operated.
In above-mentioned preparation method, before chemical plating, electrolytic degreasing and work are carried out successively to processing matrix obtained by step 1)
Change.The current density of the electrolytic degreasing is 1.5Adm-2~5.0Adm-2, the time is 0.5h~1.0h.After electrolytic degreasing
Matrix is rinsed with water, then is activated.The activation is will to process matrix to be placed in the dilute sulfuric acid that mass concentration is 20%~40%
Middle carry out electrolysis, activation, activation current density are 5Adm-2~10Adm-2, the time is 3min~5min.
In step 2), the chemical plating includes the component of following concentration with plating solution：Nickel sulfate 25g/L~30g/L, sodium tungstate
20g/L~23g/L, sodium hypophosphite 20g/L~22g/L, sodium citrate 10g/L~15g/L, sodium acetate 12g/L~15g/L, chlorine
Change lanthanum 4mg/L~5mg/L；The pH of the plating solution is 4.2~4.6, and temperature is 80 DEG C~95 DEG C, time of chemical plating for 2h~
3h.It is 3 μm~8 μm metallic precoating layers (nickel dam) in the blind via bottom and sidewall deposition thickness of matrix after chemical plating.
The preparation method of described plated diamond grinding wheel also includes：Also include carrying out machine to preplating matrix obtained by step 2)
Tool is processed, and blind hole depth is carried out sand in step 3) again after reducing to the 20%~30% of average grit diameter.The machinery adds
Work refers to successively carry out grinding wheel base body surface turning, is ground, and blind hole depth is met the requirements.
In step 3), the rolling is to be rolled abrasive material to the blind hole on grinding wheel base body surface using rolling wheel；The rolling
Pinch roller is made of elastomeric material；In the rolling process, rolling wheel speed is 2r/min~6r/min.
In step 4), the activation is that upper sand matrix is placed in dilute sulfuric acid to carry out electrolysis, activation, and activation current density is
5A·dm-2~10Adm-2, soak time is 3min~5min.The mass concentration of the dilute sulfuric acid is 20%~40%.Activation
Ultrasonic washing is carried out to matrix afterwards；Ultrasonic washing is 1.8KW~3.0KW with ultrasonic power output, and ultrasonic washing time is 5s
~15s.
In step 4), the electroplate liquid includes the component of following concentration：Nickel sulfamic acid 320g/L~350g/L, nickel chloride
30g/L~32g/L, boric acid 35g/L~40g/L, lauryl sodium sulfate 0.04g/L~0.1g/L, 1,4- butynediols 0.5g/
L~2.0g/L；The pH of the electroplate liquid is 4.4~4.8, and temperature is 40 DEG C~42 DEG C, and current density is 0.5Adm during plating-2
~4.0Adm-2。
In step 4), during the plating thickeies, grinding wheel base body keeps rotating with 20r/min speed.The plating
Thickening process uses brush plating；Paster shielding is carried out to grinding wheel base body non-electroplating part, matrix connects wire, then electrolysis, activation, then
It is placed in electroplate liquid and is electroplated.After the completion of plating, emery wheel is taken out and is rinsed with running water；Dismantle after conductive and paster
Emery wheel is dried, drying temperature is 60 DEG C~80 DEG C, and drying time is 1h~3h.
The plated diamond grinding wheel of the grinding material sequential arrangement of the present invention, grinding wheel base body surface are provided with the blind hole of ordered arrangement,
The root of abrasive material is embedded in blind hole, and the coat of metal is deposited in grinding wheel base body surface and blind hole, and abrasive material is fixedly arranged in blind hole
Abrasive material is formed, by the regular arrangement of manual control grinding wheel base body surface blind hole, realizes diamond abrasive in emery wheel
The regular arrangement of matrix surface, efficiently solve diamond abrasive in traditional skive abrasive material and be distributed density not
, the problem of disorderly and unsystematic；The basis of abrasive material is embedded in blind hole, by extruding of the diamond abrasive to blind hole, filling effect,
Coating, matrix are added to the hold of abrasive material so that effective height of protrusion of abrasive material becomes big, improves the service life of emery wheel,
The service life of emery wheel is set to improve 15%~20%；Ordered arrangement of the abrasive material in matrix surface so that abrasive material had been ground
Orderly chip removal path is formed in journey, avoids and the situation of workpiece burn occurs because abrasive dust blocks, improve grinding quality.
The preparation method of the plated diamond grinding wheel of above-mentioned grinding material sequential arrangement, successively through the perforate of grinding wheel base body surface,
Sand in chemical plating, rolling, plating process for upsetting prepare skive, and the perforate of grinding wheel base body surface passes through manual control emery wheel
The regular arrangement of matrix surface blind hole, realize regular arrangement of the diamond abrasive on grinding wheel base body surface；Chemistry
Plating makes blind via bottom and side wall plate and be covered with metallic precoating layer, enhances holding of the coating to diamond abrasive in plating consolidation process
Power；Upper sand process is to roll diamond abrasive to blind hole, is fixed on by extruding of the hole wall to abrasive material in blind hole, Ran Houtong
Later continuous plating consolidates abrasive material to form abrasive material；Gained skive is strong to the hold of abrasive material, service life length, mill
Expect, in grinding wheel base body rule of surface ordered arrangement, to improve grinding quality and grinding efficiency；The preparation method is using chemical plating, rolling
Sand process instead of preplating in traditional handicraft, upper sand (burying sand or stucco) in pressure, so as to be directly entered the thickening stage, for same
The diamond abrasive of granularity, electroplating time shorten to the 20%~55% of traditional handicraft；Emery wheel can be reduced by thickening time shortening
Arc-shaped edges weaken the edge effect of electric current, improved along thickness (abrasive material embedment rate) difference with circular arc middle part coating
Coating uniformity.
Further, after the completion of grinding wheel base body chemical plating, is carried out secondary mechanical processing, including turnery processing with
Grinding so that blind hole reaches the depth to match with abrasive grain.During thickening negative electrode grinding wheel base body rotate and with sun
The nylon hair set contact on pole brush roll surface, accelerates flow of the electrolyte to improve the nickel ion concentration near abrasive material, accelerates nickel ion
Discharge depositing, and then shorten and thicken the time.
Brief description of the drawings
Fig. 1 is the structural representation of traditional plated diamond grinding wheel；
Fig. 2 is the diagrammatic cross-section of the plated diamond grinding wheel of embodiment 1；
Fig. 3 is the structural representation of the plated diamond grinding wheel of embodiment 1；
The structural representation of Fig. 4 sand devices in the cambered surface used in embodiment 1；
The structural representation of Fig. 5 sand devices on the end face used in embodiment 1；
Fig. 6 is that the plating of embodiment 1 thickeies schematic diagram；
Fig. 7 is the structural representation of brush roll in Fig. 6.
Embodiment
With reference to embodiment, the present invention is further illustrated.
Embodiment 1
The plated diamond grinding wheel of the grinding material sequential arrangement of the present embodiment, as shown in Figure 2,3, including grinding wheel base body 1 and mill
The bed of material 5, the surface of grinding wheel base body 1 offer the blind hole 4 of ordered arrangement；The abrasive material 2 includes diamond abrasive 3 and metal
Coating 4, the root of the diamond abrasive 3 are embedded in blind hole 4, and the coat of metal 4 is deposited on the surface of grinding wheel base body 1 and blind hole 2
It is interior, for abrasive material 3 to be fixedly arranged in blind hole 2.
Wherein, the grain size number of the diamond abrasive is 30/35, and average grit diameter is 550 μm；Set the embedment of abrasive material
Rate is respectively 50%.The blind hole diameter is 0.6mm, depth 0.15mm, pitch of holes 1.0mm；Metal (nickel) coating
Thickness be average grit diameter 23%, i.e., 125 μm.
The preparation method of the plated diamond grinding wheel of the grinding material sequential arrangement of the present embodiment, comprises the following steps：
1) slot：Using pore discharge technology, the blind hole of ordered arrangement is opened up on grinding wheel base body surface, concrete operations are：
Grinding wheel base body is fixed on the rotating disk with graduation apparatus first, the distance of each small lattice is 0.5mm on graduation apparatus；
Then rotating disk is fixed in the lump together with matrix on the workbench of pore electric discharge lathe, workbench X-axis remains stationary as, and Y-axis is each
Displacement interval 0.5mm, time interval 3s, a diameter of 0.6mm of electrode used therein silk, processing electric current 20A；Wire electrode is used first
Along grinding wheel base body thickness direction (X-direction, Y-axis movement) punching on the arc surface of grinding wheel base body；Then rotating disk is rotated to cause
The circular arc of grinding wheel base body rotates 1.0mm, then continues to punch along grinding wheel base body thickness direction；So repeatedly until grinding wheel base body arc
Face perforate finishes；Afterwards that the related rotating disk of grinding wheel base body is horizontal positioned on the table, wire electrode faces the end face of emery wheel, edge
Y direction punching, X-axis remains stationary as；Y-axis each displacement interval 0.5mm, time interval 3s, treat that row's blind hole has been beaten,
Rotate rotating disk and cause grinding wheel base body circular-rotation 1.0mm, continue to punch along Y direction, until matrix both ends of the surface perforate finishes；
Thus grinding wheel base body cambered surface and end face obtain a diameter of 0.6mm, depth be 0.5mm ordered arrangement blind hole,
Produce processing matrix A；
2) chemical plating：Processing matrix A obtained by step 1) is subjected to chemical plating；Before chemical plating, processing matrix A is entered first
Matrix, i.e., be suspended in degreasing tank by row electrolytic degreasing, current density 1.5Adm-2, the electrolytic degreasing time is 1.0h；Oil removing
Matrix is rinsed with running water afterwards, then matrix is placed in the sulfuric acid tank for filling the dilute sulfuric acid that mass concentration is 20% and lived
Change, activation current density is 10Adm-2, soak time 3min；Matrix is placed in de-ionized water tank rapidly after activation, then
Rapid move to carries out chemical plating in the chemical plating fluid prepared；
Chemical plating fluid used includes the component of following concentration：Nickel sulfate 25g/L, sodium tungstate 20g/L, sodium hypophosphite 20g/
L, sodium citrate 10g/L, sodium acetate 12g/L, lanthanum chloride 4mg/L；The pH value of chemical plating fluid is 4.2, and temperature is 83 DEG C；Chemical plating
Time is 2h；
After chemical plating, blind via bottom and sidewall deposition thickness are 3 μm~8 μm metallic precoating layers (nickel dam), obtain preplating matrix；
3) it is machined：Preplating matrix obtained by step 2) is machined, blind hole depth is reduced to the average grain of abrasive material
The 27% of footpath；Specially：The cylindrical and end face of preplating matrix is subjected to finishing processing so that blind hole depth reduces to 0.2mm, afterwards
Grinding is carried out to both, the final depth for causing blind hole reduces to 0.15mm, must process matrix B；
4) sand on：The diamond abrasive of excess is placed in processing matrix B surface obtained by step 2) and rolled, makes mill
Expect in bottom insertion blind hole；Specially：
Sand in cambered surface is carried out using sand device in cambered surface as shown in Figure 4：Grinding wheel base body 1 is fixed on rotary turn
On axle 7, set in the side of rotating shaft 7 and the tangent elastic rolling wheel 9 of grinding wheel base body 1, cambered surface and the rolling wheel 6 " excess " of matrix
Tangent (rolling wheel is squeezed the elastic deformation that 1mm occurs)；During upper sand, start rolling wheel 6, in grinding wheel base body 1 and rolling wheel 6
Excessive diamond abrasive 3 (as shown in Figure 4) is put into above the tangent, is rolled that (rolling speed is by rolling wheel 6
6r/min), make diamond abrasive 3 root be embedded in matrix cambered surface blind hole in, to the blind hole of matrix cambered surface in have fully embedded into mill
Material；
Sand on end face is carried out using sand device on end face as shown in Figure 5：The supporting plate 8 that can be moved left and right is arranged on guide rail 5
On, the top of supporting plate 8 is provided with rolling wheel 6；Grinding wheel base body 1 is lain in a horizontal plane on supporting plate 8, end face and the " mistake of rolling wheel 6 of matrix
Amount " is tangent；Diamond abrasive 3 (as shown in Figure 5) is sprinkled on base end, starts rolling wheel 6 and appropriate mobile pallet 8, leads to
Cross rolling wheel 6 to be rolled, the root of diamond abrasive is embedded in the blind hole of base end, to the blind hole of the base end
Abrasive material is had fully embedded into, that is, completes sand in the rolling of a side end face；Then face rolling is changed, completes sand in the rolling of another side end face,
Produce sand matrix；
5) thicken：After upper sand matrix is activated obtained by step 4), it is placed in electroplate liquid and is electroplated, make grinding wheel base body
Deposited metal coating, abrasive material is fixedly arranged in blind hole and forms abrasive material in surface and blind hole；Specially：
The non-electroplating part of upper sand matrix is subjected to paster shielding, and matrix is connected into upper wire；Matrix is placed in quality
Concentration is to carry out electrolysis, activation in 20% dilute sulfuric acid, and activation current density is 10Adm-2, soak time 3min；Activation
Afterwards, matrix is put into the ultrasonic cleaner for filling deionized water, taking-up, which is put into electroplating bath, after ultrasound washing 10s is added
It is thick；
As shown in Figure 6, electroplanting device used includes being used for the electroplating bath 13 for holding electroplate liquid, the plating thickening process
The vertically extending rotating shaft 14 of rotatable length is provided with groove 13, level is installed with for placing sand in the rotating shaft 14
The rotation supporting plate 16 of matrix is taken turns, the rotation supporting plate 16 can rotate with rotating shaft 14；The upper end of the rotating shaft 14 is arranged with conductive cunning
Ring 17, the grinding wheel base body 15 for making to be placed on rotation supporting plate 16 electrically connect with power cathode；Turning in the electroplating bath 13
The both sides of axle 14 are equipped with that length is vertically extending, brush roll 18 for being electrically connected with positive source, and the brush roll 18 is used
It is in contact to form electric field and make nickel fast deposition on grinding wheel base body surface in the grinding wheel base body with being placed on rotation supporting plate 16；It is described
The structure of brush roll 18 is as shown in fig. 7, comprises the titanium net 22 of tubular, the surface of titanium net 22 set are covered with nylon hair set 23, nylon
23 surfaces of hair set have bristle 21；The inside of the titanium net 22 is provided with titanium tube 24, is formed between titanium tube 24 and titanium net 22 for containing
Put the annular cavity type at nickel angle 20；The both ends of annular chamber are provided with the lid that can be broken a seal, for realizing the filling or clear at nickel angle 20
It is empty；
When plating thickeies, positive wire 11 connects brush roll 18 and DC power anode, and cathode wire 12 connects conducting slip ring
17 and power cathode, the conducting slip ring 17 being connected in rotating shaft 14 passes through wire and connects grinding wheel base body 15；Grinding wheel base body 15 is kept flat
On rotation supporting plate 16, rotating shaft 14 is rotated with 20r/min speed, so as to drive grinding wheel base body 15 to rotate；Grinding wheel base body 15 with
Brush roll 18 contacts (bristle of brush roll contacts with grinding wheel base body surface), forms electric field between the two, and nickel ion quick electrodeposition exists
The surface of grinding wheel base body 15.
Electroplate liquid used in plating includes the component of following concentration：Nickel sulfamic acid 320g/L, nickel chloride 30g/L, boric acid
40g/L, lauryl sodium sulfate 0.04g/L, 1,4- butynediols 0.5g/L；The pH value of electroplate liquid is 4.2, and temperature is 40 DEG C,
Current density is 1.5Adm-2；After plating, grinding wheel base body surface deposit thickness is 125 μm；
By formula t=δ γ/Kicη (γ-density metals in formula；δ-thickness of coating；η-cathode efficiency, value
95%；K-electrochemical equivalent；ic- current density；T-time) calculate and understand, grinding wheel base body surface deposit thickness is 125 μm
It is 6.9h the time required to coating；
After thickening the time, emery wheel is taken out and rinsed with running water；Then, dismantle after wire and paster by emery wheel put to
In baking oven, 70 DEG C of baking temperature is kept, time 2h, is produced.
Embodiment 2
The plated diamond grinding wheel of the grinding material sequential arrangement of the present embodiment, including grinding wheel base body and abrasive material, the emery wheel
Matrix surface offers the blind hole of ordered arrangement；The abrasive material includes diamond abrasive and the coat of metal, the Buddha's warrior attendant stone mill
The root of material is embedded in blind hole, and the coat of metal 4 is deposited in grinding wheel base body surface and blind hole, for abrasive material to be fixedly arranged at into blind hole
It is interior.
Wherein, the grain size number of the diamond abrasive is 30/35, and average grit diameter is 550 μm；Set the embedment of abrasive material
Rate is respectively 40%.The blind hole diameter is 0.6mm, depth 0.15mm, pitch of holes 1.0mm；Metal (nickel) coating
Thickness be average grit diameter 12.7%, i.e., 70 μm.
The preparation method of the plated diamond grinding wheel of the grinding material sequential arrangement of the present embodiment, comprises the following steps：
1) slot：Using pore discharge technology, the blind hole of ordered arrangement is opened up on grinding wheel base body surface, concrete operations are the same as real
Apply example 1；Thus in the blind hole for the ordered arrangement that grinding wheel base body arc-shaped surface obtains a diameter of 0.6mm, depth is 0.5mm, produce
Process matrix A；
2) chemical plating：Processing matrix A obtained by step 1) is subjected to chemical plating；Before chemical plating, processing matrix A is entered first
Matrix, i.e., be suspended in degreasing tank by row electrolytic degreasing, current density 5.0Adm-2, the electrolytic degreasing time is 0.5h；Oil removing
Matrix is rinsed with running water afterwards, then matrix is placed in the sulfuric acid tank for filling the dilute sulfuric acid that mass concentration is 40% and lived
Change, activation current density is 10Adm-2, soak time 3min；Matrix is placed in de-ionized water tank rapidly after activation, then
Rapid move to carries out chemical plating in the chemical plating fluid prepared；
Chemical plating fluid used includes the component of following concentration：Nickel sulfate 30g/L, sodium tungstate 23g/L, sodium hypophosphite 22g/
L, sodium citrate 15g/L, sodium acetate 15g/L, lanthanum chloride 5mg/L；The pH value of chemical plating fluid is 4.6, and temperature is 87 DEG C；Chemical plating
Time is 3h；
After chemical plating, blind via bottom and sidewall deposition thickness are 3 μm~8 μm metallic precoating layers (nickel dam), obtain preplating matrix；
3) it is machined：Preplating matrix obtained by step 2) is machined, blind hole depth is reduced to the average grain of abrasive material
The 12.7% of footpath；Specially：The cylindrical and end face of preplating matrix is subjected to finishing processing so that blind hole depth reduces to 0.2mm, it
Grinding is carried out to both afterwards, the final depth for causing blind hole reduces to 0.15mm, must process matrix B；
4) sand on：The diamond abrasive of excess is placed in processing matrix B surface obtained by step 2) and rolled, makes mill
Expect in bottom insertion blind hole, concrete operations obtain sand matrix with embodiment 1；
5) thicken：After upper sand matrix is activated obtained by step 4), it is placed in electroplate liquid and is electroplated, make grinding wheel base body
Deposited metal coating, abrasive material is fixedly arranged in blind hole and forms abrasive material in surface and blind hole；Specially：
The non-electroplating part of upper sand matrix is subjected to paster shielding, and matrix is connected into upper wire；Matrix is placed in quality
Concentration is to carry out electrolysis, activation in 40% dilute sulfuric acid, and activation current density is 10Adm-2, soak time 3min；Activation
Afterwards, matrix is put into the ultrasonic cleaner for filling deionized water, is taken out after ultrasound washing 10s and be put into progress electricity in electroplating bath
Plating thickeies；The concrete operations of thickening are the same as embodiment 1；
Electroplate liquid used in plating includes the component of following concentration：Nickel sulfamic acid 350g/L, nickel chloride 32g/L, boric acid
35g/L, lauryl sodium sulfate 0.10g/L, 1,4- butynediols 2.0g/L；The pH value of electroplate liquid is 4.8, and temperature is 42 DEG C,
Current density is 1.5Adm-2；After plating, grinding wheel base body surface deposit thickness is 70 μm；
By formula t=δ γ/Kicη (γ-density metals in formula；δ-thickness of coating；η-cathode efficiency, value
95%；K-electrochemical equivalent；ic- current density；T-time) calculate and understand, grinding wheel base body surface deposit thickness is 125 μm
It is 3.9h the time required to coating；
After thickening the time, emery wheel is taken out and rinsed with running water；Then, dismantle after wire and paster by emery wheel put to
In baking oven, 70 DEG C of baking temperature is kept, time 2h, is produced.
Experimental example
This experimental example detects to the service life of embodiment 1,2 gained plated diamond grinding wheels.Detection method is：Will
The plated diamond grinding wheel of embodiment 1,2 and comparative example 1,2 is attached on identical burr removing machine tool, and workpieces processing is automobile
Engine cylinder-body (gray cast iron material), both use identical grinding process, are tested by multiple deburring, to process work
The par of part characterizes service life.Wherein, comparative example 1,2 is the electroplated diamond prepared using traditional handicraft (sand buring method)
Emery wheel, its matrix specification, abrasive grain, embedment rate and electroplating technological parameter are same as embodiment 1,2 respectively.
By formula t=δ γ/Kicη (γ-density metals in formula；δ-thickness of coating；η-cathode efficiency, value
95%；K-electrochemical equivalent；ic- current density；T-time) calculate understand, embodiment 1,2 grinding wheel base body surfaces deposition plating
Thickness degree is 125 μm, 70 μm, required time 6.9h, 3.9h；Comparative example 1, the thickness of coating of 2 grinding wheel base body surfaces deposition are
275 μm, 220 μm, the corresponding thickening time increases to 15.2h, 12.6h.Tested by deburring, embodiment and comparative example
The life-span of gained emery wheel is shown in Table 1.
The emery wheel service life testing result of the embodiment of table 1 and comparative example
| Object | Embedment rate | Electroplating current density | Thickness of coating | Thicken the time | Average life | Compared with traditional handicraft |
| Comparative example 1 | 50% | 1.5A·dm-2 | 275μm | 15.2h | 8342/piece | - |
| Embodiment 1 | 50% | 1.5A·dm-2 | 125μm | 6.9h | 9875/piece | Improve 18.4% |
| Comparative example 2 | 40% | 1.5A·dm-2 | 220μm | 12.6h | 8193/piece | - |
| Embodiment 2 | 40% | 1.5A·dm-2 | 70μm | 3.9h | 10126/piece | Improve 23.6% |
As it can be seen from table 1 the thickening time of embodiment 1,2 plated diamond grinding wheels foreshortens to comparative example 1,2
45.4%th, 30.9%, service life accordingly improves 18.4%, 23.6%.Test result indicates that plating gold produced by the present invention
Diamond grinding wheel, the root of abrasive material are embedded in blind hole, add coating, matrix to the hold of abrasive material so that abrasive material it is effective
Height of protrusion becomes big, significantly improves the service life of emery wheel.
Claims (6)
- A kind of 1. plated diamond grinding wheel of grinding material sequential arrangement, it is characterised in that：Including grinding wheel base body and abrasive material, the sand Wheel matrix surface offers the blind hole of ordered arrangement；The abrasive material includes abrasive material and the coat of metal, the root edge of the abrasive material In blind hole, the coat of metal is deposited in grinding wheel base body surface and blind hole, for concretion abrasive；The plated diamond grinding wheel is made by the method comprised the following steps：1) perforate：The blind hole of ordered arrangement is opened up on grinding wheel base body surface, obtains processing matrix；2) chemical plating：Processing matrix obtained by step 1) is subjected to chemical plating, makes blind via bottom and side wall deposition metallic precoating layer, obtains Preplating matrix；3) sand on：The diamond abrasive of excess is placed in the surface of preplating matrix obtained by step 2) and rolled, is made under abrasive material In portion's insertion blind hole, sand matrix is obtained；4) plating thickeies：After upper sand matrix is activated obtained by step 3), it is placed in electroplate liquid and is electroplated, make grinding wheel base body Deposited metal coating, abrasive material is fixedly arranged in blind hole and forms abrasive material in surface and blind hole, is produced.
- 2. plated diamond grinding wheel according to claim 1, it is characterised in that：The depth of the blind hole is the average grain of abrasive material The 20%~30% of footpath, aperture are 0.5mm~1.0mm.
- 3. plated diamond grinding wheel according to claim 1, it is characterised in that：The pitch of holes of the blind hole is averaged for abrasive material 1~2 times of granularity.
- 4. according to the plated diamond grinding wheel described in claim 1,2 or 3, it is characterised in that：The thickness of the coat of metal is The 10%~25% of abrasive material particle mean size.
- 5. plated diamond grinding wheel according to claim 1, it is characterised in that：The coat of metal is metallic nickel plated layer.
- 6. plated diamond grinding wheel according to claim 1, it is characterised in that：Abrasive material is arranged for individual layer in the abrasive material Row, the embedment rate of abrasive material is 40%~50%.
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| CN106392912B (en) * | 2016-09-30 | 2018-10-12 | 河南工业大学 | Single layer of super hard abrasive formed grinding wheel and its manufacturing method |
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| CN107030618A (en) * | 2017-05-12 | 2017-08-11 | 太仓望虞机械科技有限公司 | A kind of grinding tool of abrasive particle ordered arrangement |
| CN109352542B (en) * | 2018-11-15 | 2020-12-29 | 娄底市安地亚斯电子陶瓷有限公司 | Diamond grinding tool and preparation method thereof |
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| CN110370178A (en) * | 2019-07-31 | 2019-10-25 | 冼国强 | A kind of individual particle ordered arrangement electroplating diamond grinding block and preparation method thereof |
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| CN111823151B (en) * | 2020-08-14 | 2022-03-11 | 长沙理工大学 | Diamond grinding wheel with crystal directional grinding materials arranged in order |
| CN113529154A (en) * | 2021-07-26 | 2021-10-22 | 江苏三超金刚石工具有限公司 | Preparation method of grinding dresser with orderly arranged diamonds |
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