CN112453572A

CN112453572A - Diamond saw blade and laser welding preparation method thereof

Info

Publication number: CN112453572A
Application number: CN202011234411.9A
Authority: CN
Inventors: 丁攀
Original assignee: Saituo Tools Jiangsu Co ltd
Current assignee: Saituo Tools Jiangsu Co ltd
Priority date: 2020-11-07
Filing date: 2020-11-07
Publication date: 2021-03-09
Anticipated expiration: 2040-11-07
Also published as: CN112453572B

Abstract

The invention belongs to the technical field of powder metallurgy materials, and particularly relates to a diamond saw blade and a laser welding preparation method thereof. According to the invention, through the arrangement of the mounting assembly, the phenomenon that the service life of the saw blade base is influenced due to friction between the saw blade base and the cutting device when the cutting device is used is avoided, the structural strength of the saw blade base is effectively improved through the arrangement of the reinforcing ribs, and meanwhile, the mounting position of the mounting assembly is limited, so that the friction between the mounting assembly and the saw blade base when the cutting device drives the diamond saw blade to rotate is ensured, a certain damage is caused to the saw blade base, and the service life of the saw blade base is influenced.

Description

Diamond saw blade and laser welding preparation method thereof

Technical Field

The invention relates to the technical field of powder metallurgy materials, in particular to a diamond saw blade and a laser welding preparation method thereof.

Background

The diamond saw blade is widely applied to the fields of road and bridge maintenance, building, decoration and the like, wherein the laser welding diamond saw blade gradually replaces the traditional sintering diamond saw blade with excellent performance, the rigidity of a matrix of the laser welding diamond saw blade is better than that of the sintering diamond saw blade, so that the service life of the laser welding diamond saw blade is longer than that of the sintering diamond saw blade, the existing welding diamond saw blade directly causes the matrix to be scrapped when the abrasion of an edge of a knife is serious when in use, the cooling effect of the edge of a knife in the use process is poor, the raised dust during cutting cannot be effectively reduced, and the matrix is directly connected with equipment, the recycling of the matrix is not convenient, and the waste of resources is caused.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a diamond saw blade and a laser welding preparation method thereof, and solves the problems that the prior welding diamond saw blade directly causes scrapping of a substrate when a knife edge is seriously worn, the cooling effect of the knife edge in the using process is poor, the raised dust in the cutting process cannot be effectively reduced, the substrate is directly connected with equipment, the recycling of the substrate is inconvenient, and the resource waste is caused.

(II) technical scheme

In order to achieve the purpose, the invention provides the following technical scheme: a diamond saw blade comprises a saw blade base, wherein a connecting block penetrates through the saw blade base, a saw blade body is sleeved at the edge position of the saw blade base, an installation assembly is arranged in the middle of the saw blade base and comprises an upper cover plate and a lower cover plate, reinforcing ribs are fixedly connected to the saw blade base, a diversion trench is separately arranged at the edge part of the saw blade base, and through holes are formed in the diversion trench at positions corresponding to the connecting block;

a laser welding preparation method of a diamond saw blade comprises the following steps:

s1: preparing enough molding materials of the diamond saw blade body, weighing and mixing the raw materials according to the proportion, and preparing a bottom layer raw material;

s2: putting the mixed molding material and the bottom layer material in the S1 into a graphite die according to the weight ratio of 9:2, and sintering and molding to obtain a saw blade body;

s3: welding the formed tool bit on a connecting block arranged on a saw blade base by adopting a laser welding process to obtain a diamond saw blade;

s4: and leveling the surface of the welded diamond saw blade, polishing, spraying paint, and finally edging the cutter head.

As a preferred technical scheme of the invention, the saw blade body is provided with saw teeth, the saw blade body is radially provided with drain holes, the saw teeth and the drain holes are distributed in an annular array, the saw teeth and the drain holes are arranged in a staggered manner, the saw blade body is provided with a clamping groove at a position corresponding to the saw blade base, and the clamping groove is matched with the saw blade base and the connecting block.

As a preferred technical scheme of the invention, the number of the connecting blocks is eight, the connecting blocks are distributed on the front surface and the back surface of the saw blade base in an annular array, and the positions of the connecting blocks, which correspond to the positions on the saw blade base, are provided with the placing grooves.

As a preferred technical scheme of the invention, the reinforcing ribs and the connecting blocks are arranged in a one-to-one correspondence manner, the reinforcing ribs are provided with the guide grooves, the reinforcing ribs and the guide grooves arranged on the saw blade base are arranged in a one-to-one correspondence manner, and the positions of the reinforcing ribs corresponding to the upper cover plate and the lower cover plate are provided with the limiting grooves.

As a preferred technical scheme of the invention, mounting holes are formed in corresponding positions of the upper cover plate, the lower cover plate and the saw blade base in a penetrating manner, the mounting holes are distributed on the upper cover plate, the lower cover plate and the saw blade base in an annular array, and a water inlet hole is formed in the middle of the lower cover plate.

As a preferred technical solution of the present invention, the molding material and the weight unit in S1 are: 35-44 parts of copper, 27-36 parts of iron, 10-17 parts of cobalt, 4-9 parts of nickel, 2-7 parts of tin, 0.9-2.3 parts of silicon-chromium alloy, 1.0-1.5 parts of liquid paraffin and 1-2.3 parts of diamond, wherein the silicon-chromium alloy contains 40% of silicon and 30% of chromium, and the balance of iron and a small amount of impurities.

As a preferred technical scheme of the invention, in S2, the bottom material is firstly put into a graphite die and evenly spread on the graphite die, then the forming material of the diamond saw blade is evenly spread in the die, and then the die is placed in a vacuum hot-pressing sintering furnace, the sintering temperature is guaranteed to be 850-900 ℃, the unit pressure is 1.4-2.5MPa, and the sintering time is 15-25 minutes.

As a preferable technical scheme of the invention, the saw blade body obtained in the step S2 needs to be provided with the water drainage hole 102, and the laser welding in the step S3 only welds the contact part of the saw blade body and the connecting block in the step S2.

(III) advantageous effects

Compared with the prior art, the invention provides a diamond saw blade and a laser welding preparation method thereof, and the diamond saw blade has the following beneficial effects:

1. this diamond saw blade, through setting up the installation component, there is the friction between having avoided the saw bit base when cutting device uses and cutting device, influence the life of saw bit base, through setting up the strengthening rib, the structural strength of saw bit base has been improved effectively, the mounted position to the installation component is injectd simultaneously, there is the friction between installation component and the saw bit base when guaranteeing that cutting device drives diamond saw bit and rotates, cause certain damage to the saw bit base, influence the life of saw bit base, it directly is connected with equipment to have solved the base member, the cyclic utilization of the base member of being not convenient for, cause the problem of the waste of resource.

2. This diamond saw blade, through seting up the inlet opening on installation component, be convenient for directly let in the inside of installation component with the cooling water, through seting up the guiding gutter on saw bit base and strengthening rib, the cooling water of being convenient for flows to saw bit body position, can cool down the saw bit from inside when the cutting, improve the cooling effect to the saw bit body, through seting up the wash port on the saw bit body, the discharge of the cooling water of being convenient for, can reduce the production of dust effectively when the cutting, staff's operational environment has been improved, the cooling effect of the edge of a knife of having solved in the current diamond saw blade use is relatively poor, the problem of raise dust when can not effectual reduction cutting.

3. This diamond saw blade, through set up the arrangement groove on the saw bit base, and set up the connecting block in the arrangement groove, make the saw bit need not the lug weld on the saw bit base, can the lug cut connecting block go down the saw bit body from the saw bit base when saw bit body wearing and tearing seriously can't continue to use, keep the structural integrity of saw bit body, the continuation of the saw bit body of being convenient for uses, direct basal body along with condemned problem that leads to when having solved current welding diamond saw bit's edge of a knife wearing and tearing seriously.

Drawings

FIG. 1 is a schematic front view of the present invention;

FIG. 2 is a schematic backside view of the present invention;

FIG. 3 is a partial schematic view of the present invention;

FIG. 4 is a schematic view of the saw blade base of FIG. 1 according to the present invention;

FIG. 5 is an enlarged schematic view of the connector block of FIG. 1 in accordance with the present invention;

FIG. 6 is an enlarged schematic view of the mounting assembly of FIG. 1 in accordance with the present invention;

FIG. 7 is a schematic view of the blade body of FIG. 1 according to the present invention.

In the figure: 1. a saw blade body; 101. saw teeth; 102. a drain hole; 103. a card slot; 2. mounting the component; 201. mounting holes; 202. an upper cover plate; 203. a lower cover plate; 204. a limiting groove; 205. a water inlet hole; 3. A saw blade base; 301. reinforcing ribs; 302. a diversion trench; 303. a placing groove; 4. connecting blocks; 401. and a through hole.

Detailed Description

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

Examples

Referring to fig. 1-7, the present invention provides the following technical solutions: a diamond saw blade comprises a saw blade base 3, a connecting block 4 is arranged on the saw blade base 3 in a penetrating mode, a saw blade body 1 is sleeved on the edge position of the saw blade base 3, the saw blade body 1 has high hardness and is in direct contact with an article to be cut when the cutting is carried out, an installation component 2 is arranged in the middle of the saw blade base 3, the installation component 2 is convenient to install the saw blade base 3 into a cutting device and ensures that the saw blade base 3 cannot be greatly abraded when the cutting device is used, the installation component 2 comprises an upper cover plate 202 and a lower cover plate 203, when the diamond saw blade is installed, the installation component 2 is convenient to be assembled on the cutting device, a reinforcing rib 301 is fixedly connected onto the saw blade base 3, the structural strength of the saw blade base 3 is improved due to the arrangement of the reinforcing rib 301, meanwhile, the arrangement of a guide groove 302 is convenient, and cooling water can be smoothly conveyed, the edge part of the saw blade base 3 is separately provided with a flow guide groove 302, the flow guide groove 302 is provided to guide cooling water to the position of the saw blade body 1, the saw blade body 1 is cooled, through holes 401 are provided at positions of the flow guide groove 302 corresponding to the connecting blocks 4, and the through holes 401 are provided to facilitate the cooling water to smoothly flow to the position of the saw blade body 1 through the connecting blocks 4;

s1: preparing enough molding materials of the diamond saw blade body 1, weighing and mixing the raw materials according to the proportion, preparing a bottom layer raw material, and preparing the raw materials for sintering the saw blade body 1;

s2: putting the mixed forming material and the bottom layer material in the S1 into a graphite die according to the weight ratio of 9:2, and sintering and forming to obtain the saw blade body 1, wherein the structural strength and the service performance of the formed saw blade body 1 are determined by the weight ratio;

s3: welding the formed tool bit on a connecting block 4 arranged on a saw blade base 3 by adopting a laser welding process to obtain a diamond saw blade, mounting the connecting block 4 on the saw blade base 3 during welding, and performing primary welding at the contact position of the connecting block 4 to ensure that the connecting block 4 does not shake during welding of the saw blade body 1, thereby facilitating welding of the saw blade body 1;

s4: the diamond saw blade surface that the welding is good is leveled to carry out polishing, the processing of spraying paint, carry out the processing of opening a knife to the tool bit at last again, the levelling is convenient for polish and is handled the stability that improves the high-speed rotation of saw bit simultaneously, polish and handle the aesthetic property that can improve the saw bit, guarantee the smoothness of saw bit simultaneously, the saw bit of being convenient for take and preserve, the processing of opening a knife can improve the cutting efficiency of saw bit.

Specifically, be provided with sawtooth 101 on the saw bit body 1, and along radially having seted up wash port 102 on the saw bit body 1, sawtooth 101 and wash port 102 all are the ring array and distribute, and sawtooth 101 and wash port 102 set up by mistake mutually, guarantee that the inside hydroenergy of saw bit body 1 can outwards be discharged from the clearance between sawtooth 101, can reduce or avoid the production of dust when cutting, draw-in groove 103 has been seted up to the position department that saw bit body 1 corresponds saw bit base 3, draw-in groove 103 is convenient for 1 card in the outside of saw bit base 3, and draw-in groove 103 mutually supports with saw bit base 3 and connecting block 4, increase the area of contact between saw bit body 1 and the saw bit base 3, guarantee the joint strength between saw bit body 1 and the saw bit base 3.

Specifically, connecting block 4 is provided with eight, and connecting block 4 is the front and the back of annular array distribution at saw bit base 3, make connecting block 4 evenly distributed, when saw bit body 1 and connecting block 4 welded connection, the welding position can be the annular array and distribute, improve the fixed effect of saw bit body 1, the position department that connecting block 4 corresponds on the saw bit base 3 has all seted up the resettlement groove 303, the resettlement groove 303 set up be convenient for connecting block 4 and pass saw bit base 3, guarantee the stability that saw bit body 1 connects.

Specifically, strengthening rib 301 sets up with 4 one-to-one of connecting block, and set up guiding gutter 302 on the strengthening rib 301, the guiding gutter 302 one-to-one of seting up on strengthening rib 301 and the saw bit base 3, form the water conservancy diversion hole together with the guiding gutter 302 of seting up on the saw bit base 3, the smooth of the coolant liquid of being convenient for passes through, and strengthening rib 301 corresponds the position department of upper cover plate 202 and lower apron 203 and has all seted up spacing groove 204, seting up of spacing groove 204 is convenient for lap the upper cover plate 202 with lower apron 203 card between strengthening rib 301, make relative slip can not take place between installation component 2 and the saw bit base 3.

Specifically, the mounting hole 201 has been seted up in upper cover plate 202, corresponding position runs through on lower cover plate 203 and the saw bit base 3, mounting hole 201 is that annular array distributes at upper cover plate 202, down on cover plate 203 and the saw bit base 3, improve the linkage effect between diamond saw bit and the cutting device when guaranteeing joint strength between installation component 2 and the saw bit base 3, inlet opening 205 has been seted up at the middle part of lower cover plate 203, the inside of being convenient for let in the cooling water installation component 2 is seted up in seting up of inlet opening 205.

Specifically, the molding material and the weight unit in S1 are: 35-44 parts of copper, 27-36 parts of iron, 10-17 parts of cobalt, 4-9 parts of nickel, 2-7 parts of tin, 0.9-2.3 parts of silicon-chromium alloy, 1.0-1.5 parts of liquid paraffin, 1-2.3 parts of diamond, 40% of silicon content and 30% of chromium content in the silicon-chromium alloy, and the balance of iron and a small amount of impurities, wherein the addition of silicon can weaken the cutter to a certain extent and improve the cutting speed of the diamond saw blade.

Specifically, in the step S2, the bottom material is put into the graphite mold and uniformly spread on the graphite mold, so that each part of the formed diamond saw blade contains the bottom material, and the properties such as the overall structural strength of the diamond saw blade are the same, the formed material of the diamond saw blade is uniformly spread in the mold, and then the mold is placed in a vacuum hot-pressing sintering furnace, so that the reaction between the gas in the air and the metal elements is avoided, the forming of the diamond saw blade is influenced, the sintering temperature is kept at 850-900 ℃, and the sintering time is kept at 1.4-2.5MPa for 15-25 minutes.

Specifically, the saw blade body 1 obtained in S2 needs to be provided with the water drainage hole 102, the water drainage hole 102 is formed after sharpening, the water drainage hole 102 is conveniently arranged in a staggered manner with the saw teeth 101, the laser welding in S3 only welds the contact part of the saw blade body 1 and the connecting block 4 in S2, the welding between the saw blade body 1 and the saw blade base 3 is not needed, and the saw blade base 3 can be continuously used after the saw blade body 1 is replaced.

The working principle and the using process of the invention are as follows: during production, enough copper, iron, cobalt, nickel, tin and silicon-chromium alloy are prepared, raw materials are weighed and mixed according to a ratio, cobalt powder is used as a bottom material, the bottom material is put in a graphite mold and uniformly paved on the graphite mold, a forming material of a diamond saw blade is uniformly paved in the mold, the mold is placed in a vacuum hot-pressing sintering furnace, the sintering temperature is guaranteed to be 850-900 ℃, the sintering time is 15-25 minutes under the unit pressure of 1.4-2.5MPa, after a tool bit is obtained, the formed tool bit is welded on a connecting block 4 arranged on a saw bit base 3 by adopting a laser welding process, the diamond saw blade is obtained, when the diamond saw blade is used, the diamond blade is arranged on a cutting device through an installation hole 201 arranged on an installation component 2, cooling water is introduced into the installation component 2 through a water inlet hole 205 arranged on a lower cover plate 203, when the diamond saw blade rotates at a high speed, cooling water enters the position of the saw blade body 1 through the diversion trench 302 and the through hole 401, the saw blade body 1 is cooled from the inside, and the cooling water is discharged outwards through the water discharge hole 102, so that the generation of dust during cutting is reduced.

Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A diamond saw blade comprising a blade base (3), characterized in that: the saw blade base (3) is provided with a connecting block (4) in a penetrating mode, the edge of the saw blade base (3) is sleeved with a saw blade body (1), the middle of the saw blade base (3) is provided with a mounting assembly (2), the mounting assembly (2) comprises an upper cover plate (202) and a lower cover plate (203), the saw blade base (3) is fixedly connected with a reinforcing rib (301), the edge of the saw blade base (3) is provided with a diversion trench (302) in a separated mode, and through holes (401) are formed in the diversion trench (302) corresponding to the connecting block (4);

s1: preparing enough molding materials of the diamond saw blade body (1), weighing and mixing the raw materials according to a ratio, and preparing a bottom layer raw material;

s2: putting the mixed molding material and the bottom layer material in the S1 into a graphite die according to the weight ratio of 9:2, and sintering and molding to obtain a saw blade body (1);

s3: welding the formed tool bit on a connecting block (4) arranged on a saw blade base (3) by adopting a laser welding process to obtain a diamond saw blade;

2. The diamond saw blade and the laser welding preparation method thereof according to claim 1, wherein: saw bit body (1) is last to be provided with sawtooth (101), and has seted up wash port (102) on saw bit body (1) along radial, sawtooth (101) and wash port (102) all are the annular array and distribute, and sawtooth (101) and wash port (102) set up mutually in a staggered way, saw bit body (1) corresponds the position department of saw bit base (3) and has seted up draw-in groove (103), and draw-in groove (103) and saw bit base (3) and connecting block (4) mutually support.

3. The diamond saw blade and the laser welding preparation method thereof according to claim 1, wherein: connecting block (4) are provided with eight, and connecting block (4) are the front and the back that the annular array distributes at saw bit base (3), mounting groove (303) have all been seted up to connecting block (4) position department on corresponding saw bit base (3).

4. The diamond saw blade and the laser welding preparation method thereof according to claim 1, wherein: the reinforcing ribs (301) are arranged in one-to-one correspondence with the connecting blocks (4), the guide grooves (302) are formed in the reinforcing ribs (301), the guide grooves (302) formed in the reinforcing ribs (301) and the saw blade base (3) are in one-to-one correspondence, and the limiting grooves (204) are formed in positions, corresponding to the upper cover plate (202) and the lower cover plate (203), of the reinforcing ribs (301).

5. The diamond saw blade and the laser welding preparation method thereof according to claim 1, wherein: the saw blade base is characterized in that mounting holes (201) are formed in corresponding positions of the upper cover plate (202), the lower cover plate (203) and the saw blade base (3) in a penetrating mode, the mounting holes (201) are distributed on the upper cover plate (202), the lower cover plate (203) and the saw blade base (3) in an annular array mode, and a water inlet hole (205) is formed in the middle of the lower cover plate (203).

6. The diamond saw blade and the laser welding preparation method thereof according to claim 1, wherein: the molding material and the weight unit in the S1 are as follows: 35-44 parts of copper, 27-36 parts of iron, 10-17 parts of cobalt, 4-9 parts of nickel, 2-7 parts of tin, 0.9-2.3 parts of silicon-chromium alloy, 1.0-1.5 parts of liquid paraffin and 1-2.3 parts of diamond, wherein the silicon-chromium alloy contains 40% of silicon and 30% of chromium, and the balance of iron and a small amount of impurities.

7. The diamond saw blade and the laser welding preparation method thereof according to claim 1, wherein: in the S2, the bottom layer material is firstly put into a graphite mould and evenly spread on the graphite mould, then the forming material of the diamond saw blade is evenly spread into the mould, and then the mould is placed into a vacuum hot-pressing sintering furnace, the sintering temperature is guaranteed to be 850-900 ℃, and the sintering time is 15-25 minutes under the unit pressure of 1.4-2.5 MPa.

8. The diamond saw blade and the laser welding preparation method thereof according to claim 1, wherein: the saw blade body (1) obtained in the step S2 needs to be provided with a drain hole (102), and the laser welding in the step S3 only welds the contact part of the saw blade body (1) and the connecting block (4) in the step S2.