CN102268717B

CN102268717B - Sand feeding method for diamond wire saw

Info

Publication number: CN102268717B
Application number: CN 201110205871
Authority: CN
Inventors: 邹余耀
Original assignee: NANJING SANCHAO DIAMOND TOOLS CO Ltd
Current assignee: NANJING SANCHAO ADVANCED MATERIALS CO., LTD.
Priority date: 2011-07-22
Filing date: 2011-07-22
Publication date: 2013-12-25
Anticipated expiration: 2031-07-22
Also published as: CN102268717A

Abstract

The invention relates to a sand feeding method for a diamond wire saw. The method comprises the following steps of: (1) preparing a diamond electroplating solution, wherein each litre of the electroplating solution comprises 10-20g of diamond, 100-240g of NiSO4, 40-100g of NiCl2, 10-50g of CoSO4 and 40-80g of H2BO3; (2) adding the electroplating solution to a sand feeding tower, wherein the sand feeding tower is in the shape of a column or polygon and is arranged vertically, and 2 to 8 Ni anodes are uniformly arranged on the inner wall of the sand feeding tower; and (3) making a bare metal wire penetrate into the bottom of the sand feeding tower and out of the tower top at a speed of 2-8 m/min; by adopting the bare metal wire as the cathode and Ni as the anode during the penetration of the bare metal wire, applying DC (Direct current) and plating diamond on the bare metal wire. The diamonds on the diamond wire saw prepared by the invention are uniformly distributed and are not accumulated.

Description

A kind of upper sand method of diamond wire saw

Technical field

The present invention relates to a kind of upper sand method of diamond wire saw, be about to diamond and be fixed on the method on the metal bare wire.

Background technology

Along with photovoltaic needs with the cutting of silicon materials and LED sapphire substrate, the usage quantity of diamond fretsaw is increased substantially, the diamond fretsaw domestic market is almost completely that an external saw manufacturers occupies at present, and domestic enterprise has many gordian techniquies also to break through.

The conventional manufacture method of diamond wire saw is to emit bare wire from an actinobacillus wheel, through operations such as oil removing, rust cleaning, nickel preplating, upper sand, nickel plating thickening, cleaning, oven dry, wire coiler take-ups.Whole line is to move in the horizontal direction, particularly go up the sand operation and often adopt sand buring method, be about to bare wire passes from " a pile " diamond, in the process of passing, effect by electric current is fixed on the part diamond on bare wire, thereby complete the sand process, on this sand buring method, sand has following drawback:

One: because line is constantly proal in sand, diamond is after being plated on line, because coating is very thin, coating is very little to adamantine hold, so, through " sand heap " time, the diamond overwhelming majority be fixed is blocked, and makes the quantity of sand uncontrollable, how much differ, extremely inhomogeneous.

Its two: because line navigates within Sha Duizhong, make between line and diamond to produce friction, make the nickel dam plated in advance be easy to be rubbed off, diamond and later nickel thickening layer and the bonding force on line surface are reduced, cause adamantine improper coming off.

Its three: because line is embedded in Sha Duizhong, sand heap is fully immersed in again in plating solution, makes the suffered pressure difference of upper and lower surface of line, and the suffered frictional force of the sand on surface is also different, must make the diamond particles number of the upper and lower surface of line make a big difference, make line deviation phenomenon easily occur in cutting.

Summary of the invention

The object of the invention is to overcome the defect that above-mentioned prior art exists, a kind of upper sand method of brand-new diamond wire saw is provided, diamond can be fixed on the metal bare wire equably.

The present invention includes following steps:

1) preparation diamond electroplating liquid, every liter of electroplate liquid comprises: 10-20 gram diamonds, 100-240 gram NiSO ₄, 40-100 gram NiCl ₂, 10-50 gram CoSO ₄, 40-80 gram H ₂bO ₃;

Above-mentioned solution is mixed by stirring formulated by single nickel salt, nickelous chloride, rose vitriol, boric acid, water, in electroplate liquid, diamond is suspended state.

2) electroplate liquid is placed in to upper sand tower, the cylindrical or Polygons of sand tower on this, the vertical placement, evenly place 2-8 and prop up the Ni anode on its inwall;

3) make metal Naked line with the speed of 2-8m/min from penetrate at the bottom of sand tower tower, from tower top, pass; The metal bare wire is walked in process, take the metal bare wire as negative pole, and Ni is anode, applies direct current, and diamond is plated on the metal bare wire.

Due to metal bare wire in electroplating process as negative electrode, therefore for making as much as possible it be consistent to the distance of anode, improve the homogeneity that diamond distributes on the metal bare wire, thus the metal bare wire while walking in upper sand tower be along on the medullary ray of sand tower walk.

Above in electroplate liquid, contain acid, therefore upper sand tower preferably adopts the material with good heat-proof corrosion resistant erosion property to make, and in the high molecular polymerization materials such as PP, PE, PC, PVC, preferably commonly uses and the high PVC material of sexual valence.

The diameter that the internal diameter of above-mentioned upper sand tower is 50-120mm, metal bare wire is that 0.1-0.4mm, the electric current while electroplating are 1-5A.

Because upper sand tower is vertically disposed, therefore the metal bare wire from the sand tower bottom process of walking to top, electroplate liquid has seepage, therefore in electroplating process, the electroplate liquid spilt need be caused to the reservoir of the electroplate liquid of separately establishing with pipe, the electroplate liquid of going up in the sand tower will constantly supplement simultaneously.

For security deposit's hard rock is suspended in electroplate liquid, its particle diameter is controlled between 10-40 μ.

Adamantine distributing very evenly on the diamond wire saw that adopts the present invention to prepare, with 200 times of CCD microscopic examinations, diamond is without packing phenomenon.After silk saw is fixing, rotate four times, the diamond particles number on each direction is counted, the data ratio on each direction (data little be molecule), all be greater than 0.70.Recording silk saw cylindricity with electronic microcalliper is 0.03, and these are all that existing sand buring method can't realize.

figure of description

The structural representation that Fig. 1 is upper sand tower of the present invention.

In Fig. 1,1 is upper sand tower, and 2 is the Ni anode, and 3 is the metal bare wire, and 4 is electroplate liquid, and 5 is guide roller

embodiment

embodiment 1:

1) preparation diamond electroplating liquid:

Take single nickel salt 10000 grams, nickelous chloride 10000 grams, rose vitriol 1000 grams, boric acid 5000 grams, these materials are put in the electroplate liquid liquid pool, inject pure water in liquid pool, and constantly stir, finally make electroplate liquid reach 100L, add wherein again 2000 gram diamonds, stir and be heated to after 45 degree the preparation that completes electroplate liquid.In the every liter of electroplate liquid prepared, contain: 20 gram diamonds, 100 gram NiSO ₄, 100 gram NiCl ₂, 10 gram CoSO ₄, 50 gram H ₂bO ₃.

2) electroplate liquid 4 is placed in to the upper sand tower 1 that adopts PVC to make, and in upper sand process, the temperature of electroplate liquid 4 is remained on to 45 degree.In the present embodiment, upper sand tower 1 is cylindrical, and internal diameter is 100mm, the vertical placement, and its inwall evenly is placed with 4 Ni anodes 2.

3) by diameter, be the speed of 0.25mm metal Naked line 3 with 2m/min, under the guiding of guide roller 5 from penetrate at the bottom of sand tower tower, along the medullary ray of upper sand tower 1, from tower top, pass; The metal bare wire is walked in process, take the metal bare wire as negative pole, and Ni is anode, applies the direct current of 5A, diamond particles can be plated on the metal bare wire equably, thereby make diamond wire saw.

Embodiment 2:

2) preparation diamond electroplating liquid:

Take single nickel salt 24000 grams, nickelous chloride 4000 grams, rose vitriol 4000 grams, boric acid 6000 grams, these materials are put in the electroplate liquid liquid pool, inject pure water in liquid pool, and constantly stir, finally make electroplate liquid reach 100L, add wherein again 1000 gram diamonds, stir and be heated to after 42 degree the preparation that completes electroplate liquid.In the every liter of electroplate liquid prepared, contain: 10 gram diamonds, 240 gram NiSO ₄, 40 gram NiCl ₂, 40 gram CoSO ₄, 60 gram H ₂bO ₃.

2) electroplate liquid 4 is placed in to the upper sand tower 1 that adopts PVC to make, and in upper sand process, the temperature of electroplate liquid 4 is remained on to 45 degree.In the present embodiment, upper sand tower 1 is octagon, and the inner chamber opposite side distance, from being 100mm, is vertically placed, and its inwall evenly is placed with 8 Ni anodes 2.

3) by diameter, be 0.30mm metal Naked line 3 with the speed of 6m/min from penetrate at the bottom of sand tower tower, under the guiding of guide roller 5 along on the medullary ray of sand tower 1 from passing from tower top; The metal bare wire is walked in process, take the metal bare wire as negative pole, and Ni is anode, applies the direct current of 5A, diamond particles can be plated on the metal bare wire equably, electroplates through thickening, thereby makes diamond wire saw.

Claims

1. the upper sand method of a diamond wire saw, is characterized in that comprising the steps:

1) preparation diamond electroplating liquid, every liter of electroplate liquid comprises: 10-20 gram diamond, 100-240 gram NiSO ₄, 40-100 gram NiCl ₂, 10-50 gram CoSO ₄, 40-80 gram H ₂bO ₃;

3) make metal Naked line with the speed of 2-8m/min from penetrate at the bottom of sand tower tower, from tower top, pass; The metal bare wire is walked in process, take the metal bare wire as negative pole, and Ni is anode, applies direct current, and diamond is plated on the metal bare wire;

Above-mentioned metal bare wire navigates within the medullary ray of sand tower, and above-mentioned adamantine particle diameter is 10-40 μ.

2. the upper sand method of diamond wire saw as claimed in claim 1, is characterized in that the sand tower adopts the material of heat-proof corrosion resistant erosion to make, and its internal diameter is 50-120mm.

3. the upper sand method of diamond wire saw as claimed in claim 2, is characterized in that the material of described heat-proof corrosion resistant erosion is selected from PP, PE, PC or PVC.

4. the upper sand method of diamond wire saw as claimed in claim 1, the diameter that it is characterized in that the metal bare wire is 0.1-0.4mm.

5. the upper sand method of diamond wire saw as claimed in claim 1, the electric current while it is characterized in that electroplating is 1-5A.

6. the upper sand method of diamond wire saw as claimed in claim 1, while it is characterized in that electroplating, the temperature of electroplate liquid is 40-55 ℃.