CN110306097A - The method that diamond saw blade is prepared using cold pressing connection - Google Patents
The method that diamond saw blade is prepared using cold pressing connection Download PDFInfo
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- CN110306097A CN110306097A CN201910523998.6A CN201910523998A CN110306097A CN 110306097 A CN110306097 A CN 110306097A CN 201910523998 A CN201910523998 A CN 201910523998A CN 110306097 A CN110306097 A CN 110306097A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/02—Compacting only
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/12—Both compacting and sintering
- B22F3/14—Both compacting and sintering simultaneously
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28D—WORKING STONE OR STONE-LIKE MATERIALS
- B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
- B28D1/02—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by sawing
- B28D1/12—Saw-blades or saw-discs specially adapted for working stone
- B28D1/121—Circular saw blades
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C26/00—Alloys containing diamond or cubic or wurtzitic boron nitride, fullerenes or carbon nanotubes
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/02—Alloys containing less than 50% by weight of each constituent containing copper
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C30/00—Alloys containing less than 50% by weight of each constituent
- C22C30/04—Alloys containing less than 50% by weight of each constituent containing tin or lead
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/005—Ferrous alloys, e.g. steel alloys containing rare earths, i.e. Sc, Y, Lanthanides
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/008—Ferrous alloys, e.g. steel alloys containing tin
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/10—Ferrous alloys, e.g. steel alloys containing cobalt
- C22C38/105—Ferrous alloys, e.g. steel alloys containing cobalt containing Co and Ni
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/16—Ferrous alloys, e.g. steel alloys containing copper
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
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Abstract
The invention discloses a kind of methods for preparing diamond saw blade using cold pressing connection, belong to diamond saw blade technical field.The diamond saw blade is tray type structure, including planar disk bottom and disk edge, and the vertebra shape handle on the inside of diamond segment is embedded in the gap between the sawtooth of matrix periphery and combines closely with sawtooth.Cutter head is embedded into saw bit matrix by the optimization design to saw-blade structure, and using cold pressing connection type, realizes being reliably connected for cutter head and matrix.Prepared diamond saw blade is able to carry out bending cutting, and realization extracts special-shaped pattern in any materials, not only convenient, but also meets multipurpose demand.
Description
Technical field:
The present invention relates to diamond saw blade technical fields, and in particular to a kind of to prepare diamond saw blade using cold pressing connection
Method.
Background technique:
In the overall situation of global economic development, multi-functional, convenient, the professional direction as tool-class research and development of products, especially
It more needs this kind of products in fields such as engineering construction, engraved stones.
Diamond saw blade is a kind of Cutting indexes tool, and it is hard to be widely used in concrete, refractory material, stone material, ceramics etc.
The cutting processing of crisp material.Diamond saw blade is mainly made of matrix and cutter head two parts, and cutter head is generally by tyre body alloy and one
The diamond particles of certainty ratio are constituted, and realize diamond grain stone material to the holding power of diamond particles etc. using tyre body alloy
Cutting.In order to improve the cutting performance and service life, the production cost for reducing diamond saw blade of diamond saw blade, carcass is improved
Holding power between alloy and diamond particles always is the hot spot of research.
Binding force between diamond segment and saw bit matrix is also concerned, and bond strength is low, then cutter head is easy when cutting
In falling off, therefore, the impact to enable cutter head firmly to fight material in cutting needs to promote cutter head and basal body binding force.
The technique by saw bit matrix in conjunction with diamond segment includes plating, high-frequency welding and laser welding at present.Tradition
Electroplating technology is that cutter head is directly electroplated out on saw bit matrix, and bond strength is lower, and cutter head is easily when cutting hardness big material
It falls off.Traditional high-frequency welding is by cutter head soldering on matrix, and cutter head faying face is permeated by brazing filler metal melts and connected, heat affecting
Qu Kuan, elevated temperature strength is low, and bearing capacity is poor, is not suitable for high temperature and high-intensitive desired occasion.
It is more mature using the technique of laser welding, preferably diamond segment and steel matrix can be fused together,
Bond strength is high and heat affected area is small, overcomes cutter tooth obscission, but because cutter head and saw bit matrix are dissimilar materials, various property
It can differ greatly, therefore carry out needing to prepare transition zone when laser welding, while for the sufficiently high weld strength of acquisition and well
Weldquality, need cutter head, saw bit matrix and transition zone to all have reasonable formula and optimal sintering temperature, if cutter head with
The ingredient difference of transition zone is too big, is easily produced fracture in intersection due to heated unbalance stress；Each section formula it is improper or
When laser welding process parameter is improper, easily there is stomata, cavity etc. in commissure, causes weld strength lower, and use is not achieved and wants
Ask, thus using laser welding prepare saw blade research and development cost and rejection rate it is higher, and complex procedures.
In addition, existing common saw blade can only carry out straight cuts, and circular hole to be taken for stone countertops or to stone
It then requires saw blade to can be carried out free bend cutting when material surface engraving various shapes, also cannot achieve at present.
Summary of the invention:
The purpose of the present invention is to provide a kind of method for preparing diamond saw blade using cold pressing connection, the saw blade of preparation has
Curvilinear cut can be presented in certain bending angle；Simultaneously by the special designing to matrix and tip shapes and using cold pressing
Connection type, makes that the preparation section of saw blade is simple and bond strength is high.
To achieve the above object, the technical solution adopted in the present invention is as follows:
Diamond saw blade of the invention is tray type structure, including planar disk bottom and disk edge；The planar disk bottom is the first base
Body, the center at planar disk bottom are equipped with axis hole, and the disk edge is made of the diamond segment in outside and the second matrix of inside；First
Matrix and the integrally formed composition saw bit matrix of the second matrix；The diamond segment be it is multiple, be uniformly distributed in the disk edge
Outer edge；Diamond segment is T-shaped structure, the vertebra shape handle of working end and inside including outside, the work of adjacent diamond cutter head
Make that there is interval between end；The disk is designed as laciniation, diamond segment inside along the periphery of the second matrix of inside
Each vertebra shape handle be embedded in the gap between each sawtooth and combine closely with sawtooth；The disk is along each sawtooth of upper second matrix
It is provided with groove, interval of the groove between each diamond segment, groove inner surface is inner sunken face structure；
The saw bit matrix of the diamond saw blade is combined as a whole with diamond segment by being cold-pressed connection；Specific preparation process
Include the following steps:
(1) matrix is processed: preparing matrix using punching machine punching type, the sawtooth on Vehicle Processing matrix；
(2) customization cold pressing connection punching block: by the structure preparation cold pressing connection punching block of the diamond saw blade of layout design；
(3) diamond segment is prepared；
(4) matrix and cutter head are combined together using cold pressing connection；
(5) it paints, examine:
In above-mentioned steps (3), the preparation process of diamond segment are as follows: by diamond segment prepare raw material mix it is laggard
Row cold moudling, then hot pressed sintering；When hot pressed sintering, sintering temperature is 790~850 DEG C, 50~60kg/cm of pressure2, heat preservation
Time 40-60 minute.
In above-mentioned steps (4), the process of the cold pressing connection includes the following steps:
(a) it will be packed into cold pressing connection punching block after the saw bit matrix processed and diamond segment splicing；
(b) cold pressing assembled in step (a) connection punching block is fixed, is then applied to the both ends of cold pressing connection punching block
Add the loading force F perpendicular to diamond segment outer end face, under the action of loading force F, at the zigzag intervals of saw bit matrix by
The inside extruding of diamond segment vertebra shape handle and generate plastic deformation, until the vertebra shape handle of diamond segment has fully embedded on matrix
In gap between each sawtooth；The loading force F is 300-350KN.
The present invention is cold-pressed connection and prepares in diamond saw blade, and the disk is 120~170 ° along the angle theta with planar disk bottom.
The saw bit matrix material of diamond saw blade of the present invention is 30CrMo steel, 34~38HRC of hardness；According to parts by weight,
The composition of diamond segment raw materials are as follows:
18-28 parts of copper, 35-45 parts of iron, 3-18 parts of nickel, 2-10 parts of cobalt, 2-10 parts of tin, 3-12 parts of rare earth, 5-10 parts of WC powder；
0.4-1.2 parts of atoleine, 0.8-2.1 parts of diamond；The rare earth is Y or La powder.
According to parts by weight, diamond segment raw materials composition is preferred are as follows:
20-26 parts of copper, 37-42 parts of iron, 7-16 parts of nickel, 3-8 parts of cobalt, 4-9 parts of tin, 4-10 parts of rare earth, 6-8 parts of WC powder；Liquid
0.6-1.0 parts of body paraffin, 1.0-1.9 parts of diamond.
The advantages of the present invention are as follows:
1, steel matrix is designed as disk-like structure by the present invention, and saw blade is made to have certain bending angle, therefore cutting can be with
Curvilinear cut is presented, circular hole will be taken for stone countertops or stone surface engraving various shapes can be cut with free bend,
Realization extracts special-shaped pattern in any materials, not only convenient, but also meets multipurpose demand.And common saw blade can only carry out
Straight cuts.
2, diamond segment is designed as T-shaped structure by the present invention, and saw bit matrix periphery is zigzag, is made in diamond segment
Each vertebra shape handle of side can be embedded in the gap between each sawtooth, and so that each vertebra shape handle is squeezed into each by being cold-pressed connection type
Secured connection is formed with sawtooth in gap.
3, there is interval, interval is equipped with inside curved indentations, cutting can be improved between diamond segment of the invention
Rapid drainage in the process reduces Cutting Drag.
4, nickel, cobalt, rare earth and WC reinforced phase are added in cutter head tyre body alloy of the invention, diamond saw can be greatly improved
Piece carcass improves the service life and sharpness of saw blade to the bite force of diamond, reduces the invalid waste of metal powder resource.It is dilute
The addition of earth elements Y and La and with the elements such as WC and nickel, cobalt under the proportion of optimization, can greatly improve tyre body alloy
The bite force of hardness, bending strength and tyre body alloy and diamond particles.
5, saw bit matrix and diamond segment are securely joined together by the present invention by the way of cold pressing connection, are being spliced
Hold macrostructure using squeezing the vertebra shape handle of cutter head and secured
It is embedded into saw bit matrix.
Detailed description of the invention:
Fig. 1 is the diamond saw blade structural schematic diagram (top view) of present invention bending cutting.
Fig. 2 is the diamond saw blade structural schematic diagram (sectional view) of present invention bending cutting.
Fig. 3 is diamond segment SEM pattern prepared by embodiment 1 and comparative example 1；Wherein: embodiment 1 (a) (b) compares
Example 1.
In figure: 1- diamond segment；101- conical grip；The first matrix of 2-；The second matrix of 3-.
Specific embodiment:
With reference to the accompanying drawings and embodiments to the detailed description of the invention.
Diamond saw chip architecture of the present invention is as shown in Figs. 1-2.The diamond saw blade be tray type structure, including planar disk bottom and
Disk edge, disk are 120~170 ° along the angle theta with planar disk bottom.The planar disk bottom is the first matrix 2, the center at planar disk bottom
Equipped with the axis hole for installation, the disk edge is made of the diamond segment 1 in outside and the second matrix 3 of inside；First matrix
With the integrally formed composition saw bit matrix of the second matrix.
The diamond segment be it is multiple, be uniformly annularly distributed in the outer edge on the disk edge；Diamond segment is T-shaped structure,
The vertebra shape handle 101 of working end and inside including outside has interval, minimum spacing between the working end of adjacent diamond cutter head
For 4mm.
The disk is designed as laciniation along the periphery of the second matrix of inside, each vertebra shape handle on the inside of diamond segment
It is embedded in the gap between each sawtooth and combines closely with sawtooth；The disk is provided with groove along each sawtooth of upper second matrix,
Interval of the groove between each diamond segment, groove inner surface are inner sunken face structure.
The saw bit matrix material of the diamond saw blade be 30CrMo steel, 34~38HRC of hardness, the diamond segment be by
Raw material powder after mixing, is made after cold moudling and hot pressed sintering；The group of diamond segment raw materials becomes
(parts by weight): 18-28 parts of copper, 35-45 parts of iron, 3-18 parts of nickel, 2-10 parts of cobalt, 2-10 parts of tin, 3-12 parts of rare earth, WC powder 5-10
Part；0.4-1.2 parts of atoleine, 0.8-2.1 parts of diamond；The rare earth is Y or La powder.
The saw bit matrix of the diamond saw blade is combined as a whole with diamond segment by being cold-pressed connection；Specific preparation process
Include the following steps:
(1) matrix is processed: according to drawing requirement, preparing matrix, Vehicle Processing matrix sawtooth using punching machine punching type；Process base
When body, gap of the disk along the second matrix of inside between each sawtooth should than the undersized of vertebra shape handle each on diamond segment,
So as to form the saw blade of high bonding strength after each vertebra shape handle squeezes into each gap when carrying out cold pressing connection.
(2) customization cold pressing connection punching block: by the shape preparation cold pressing connection punching block of the diamond saw blade of layout design；
(3) preparation of diamond segment: carrying out cold moudling for preparing after raw material mix according to the ratio for diamond segment,
Then hot pressed sintering；When hot pressed sintering, sintering temperature is 790~850 DEG C, 50~60kg/cm of pressure2, soaking time 60 minutes；
Then finishing processing of putting the first edge on a knife or a pair of scissors is carried out to saw blade with abrasive machine.
(4) cold pressing connection: will be packed into cold pressing connection punching block after the saw bit matrix processed and diamond segment splicing (because
Diamond tool area of bed is slightly larger than the gap between each sawtooth on matrix, so the vertebra shape handle of diamond segment only has one after splicing
It partially protrudes into the gap between sawtooth)；The cold pressing assembled connection punching block is fixed on the table, then using pressure
Power machine applies loading force F, the F 300-350KN perpendicular to diamond segment outer end face to the both ends of cold pressing connection punching block.Because of saw
Sheet matrix plasticity choosing choosing be better than diamond segment plasticity, under the action of loading force F, at the zigzag intervals of saw bit matrix by
The inside extruding of diamond segment vertebra shape handle and generate plastic deformation, until the vertebra shape handle of diamond segment has fully embedded on matrix
In gap between each sawtooth；Cold pressing connection punching block is opened, saw blade after molding is taken out；Loading force F cannot be excessive, can not be too
It is small.
(5) it paints, examine: diamond saw blade being polishing to matrix surface light with sanding machine, then carries out surface lacquer,
Drying, to prevent surface oxidisation, finally with 600N/mm2Strength criterion is attached intensity detection to each diamond segment, closes
Printing packaging is put in storage after lattice.
Embodiment 1:
The present embodiment prepares the process of diamond saw blade are as follows:
1, diamond saw chip architecture is designed by Fig. 1-2, and processes matrix.
2, the raw material group of diamond segment becomes (parts by weight): 25 parts of copper, 40 parts of iron, and 15 parts of nickel, 5 parts of cobalt, 6 parts of tin,
9 parts of rare earth, 8 parts of WC powder；0.8 part of atoleine, 1.2 parts of diamond.
Cutter head raw material are put into mixing tank after mixing 3 hours, powder is poured into cold moudling in mold, then hot pressing
Sintering.Hot pressed sintering temperature is 800 DEG C, pressure 60kg/cm2, soaking time 60 minutes.Grinding wheel belt sanding knife after hot pressed sintering
Head.Prepared diamond segment even tissue, densification, as shown in Fig. 3 (a).After tested, cutter head hardness is 195HB, alloy
Quality abrasion loss is 0.0080g.Cutter head hardness can reflect that tyre body alloy to the holding power of diamond, is held to a certain extent
The size of power reflects the ability that diamond particles resist grinding force or Dressing Force.Holding power deficiency will lead to golden in grinding process
Hard rock particle falls off.
3, it will be put into cold pressing connection punching block after saw bit matrix and diamond segment splicing, start press, to cutter head end
Apply vertical loading force 320KN, in the zigzag intervals for squeezing insertion saw bit matrix completely to the vertebra shape handle on the inside of cutter head.
Saw blade is taken out, it is bright with sanding machine polishing matrix surface, carry out surface lacquer, drying, to prevent surface oxidisation, finally with
600N/mm2Strength criterion is qualification to intensity detection, testing result is attached between each diamond segment and matrix.
Embodiment 2:
The present embodiment prepares the process of diamond saw blade are as follows:
1, diamond saw chip architecture is designed by Fig. 1-2, and processes matrix.
2, the raw material group of diamond segment becomes (parts by weight): 26 parts of copper, 37 parts of iron, and 16 parts of nickel, 5 parts of cobalt, 8 parts of tin,
Rare Earth Y is 7 parts, 8 parts of WC powder, 0.7 part of atoleine, 1.5 parts of diamond.
Cutter head raw material are put into mixing tank after mixing 3 hours, powder is poured into cold moudling in mold, then hot pressing
Sintering.Hot pressed sintering temperature is 805 DEG C, pressure 60kg/cm2, soaking time 60 minutes.Grinding wheel belt sanding knife after hot pressed sintering
Head.Prepared diamond segment even tissue, densification.After tested, cutter head hardness is 194HB, the quality abrasion loss of alloy
For 0.0075g.
3, it will be put into cold pressing connection punching block after saw bit matrix and diamond segment splicing, start press, to cutter head end
Apply vertical loading force 325KN, in the zigzag intervals for squeezing insertion saw bit matrix completely to the vertebra shape handle on the inside of cutter head.
Saw blade is taken out, it is bright with sanding machine polishing matrix surface, carry out surface lacquer, drying, to prevent surface oxidisation, finally with
600N/mm2Strength criterion is qualification to intensity detection, testing result is attached between each diamond segment and matrix.
Embodiment 3:
The present embodiment prepares the process of diamond saw blade are as follows:
1, diamond saw chip architecture is designed by Fig. 1-2, and processes matrix.
2, the raw material group of diamond segment becomes (parts by weight): 25 parts of copper, 41 parts of iron, and 12 parts of nickel, 5 parts of cobalt, 6 parts of tin,
Rare earth La is 8 parts, 6.5 parts of WC powder, 0.7 part of atoleine, 1.8 parts of diamond.
Cutter head raw material are put into mixing tank after mixing 3 hours, powder is poured into cold moudling in mold, then hot pressing
Sintering.Hot pressed sintering temperature is 820 DEG C, pressure 50kg/cm2, soaking time 60 minutes.Grinding wheel belt sanding knife after hot pressed sintering
Head.Prepared diamond segment even tissue, densification.After tested, cutter head hardness is 192HB, the quality abrasion loss of alloy
For 0.0075g.
3, it will be put into cold pressing connection punching block after saw bit matrix and diamond segment splicing, start press, to cutter head end
Apply vertical loading force 340KN, in the zigzag intervals for squeezing insertion saw bit matrix completely to the vertebra shape handle on the inside of cutter head.
Saw blade is taken out, it is bright with sanding machine polishing matrix surface, carry out surface lacquer, drying, to prevent surface oxidisation, finally with
600N/mm2Strength criterion is qualification to intensity detection, testing result is attached between each diamond segment and matrix.
Comparative example 1:
Difference from Example 1 is: the raw material group of diamond segment becomes (parts by weight): 25 parts of copper, 40 parts of iron,
15 parts of nickel, 5 parts of cobalt, 6 parts of tin, 0.8 part of atoleine, 1.2 parts of diamond.
The tissue of diamond segment prepared by this example is than more loose, coarse, as shown in Fig. 3 (b).To the gold of this example preparation
Diamond tool bit is tested, and cutter head hardness is 182HB, and the quality abrasion loss of alloy is 0.0098g.It can be seen that be not added Rare Earth Y and
Hardness and quality abrasion loss when WC is all poor.
Comparative example 2:
Difference from Example 1 is: when saw bit matrix and diamond segment are carried out cold pressing connection, to cutter head end face
Applying vertical loading force is respectively 250KN and 400KN.
Prepared diamond saw blade is detected, when loading force is 250KN, conical grip can be embedded into saw for discovery
In the sawtooth gap of sheet matrix edge, but because on-load pressure is smaller, steel matrix deflection is limited, and the filling of gap location is not ten
Divide full.With 600N/mm2When strength criterion detects bonding strength between diamond segment and matrix, cutter head takes off from matrix
It falls.
When loading force is 400KN, because extruding force is excessive, insertion is caused excessively the second matrix to be caused out-of-flatness occur
With overlap situation (material used in cold pressing connection punching block is stainless steel, plastic deformation ability and saw bit matrix difference be not it is very much, because
When this extruding force is excessive, punching block can also deform indirectly, and the overlap situation of matrix is caused to occur).
The foregoing is merely the preferred embodiments of the invention, it is noted that above-described embodiment is exemplary in nature, cannot
It is interpreted as limitation of the present invention, without departing from the principle of the present invention, several improvement and modification can also be made, this
A little improvement and modification also should be regarded as protection scope of the present invention.
Claims (7)
1. a kind of method for preparing diamond saw blade using cold pressing connection, it is characterised in that: the diamond saw blade is tray type structure,
Including planar disk bottom and disk edge；The planar disk bottom is the first matrix, and the center at planar disk bottom is equipped with axis hole, and the disk is along by outer
The diamond segment of side and the second matrix composition of inside；First matrix and the integrally formed composition saw bit matrix of the second matrix；Institute
State diamond segment be it is multiple, be uniformly distributed in the outer edge on the disk edge；Diamond segment is T-shaped structure, including outside
The vertebra shape handle of working end and inside has interval between the working end of adjacent diamond cutter head；Second base of the disk along inside
The periphery of body is designed as laciniation, each vertebra shape handle on the inside of diamond segment be embedded in the gap between each sawtooth and with saw
Tooth is combined closely；The disk is provided with groove along each sawtooth of upper second matrix, between groove is between each diamond segment
Every place, groove inner surface is inner sunken face structure；
The saw bit matrix of the diamond saw blade is combined as a whole with diamond segment by being cold-pressed connection；Specifically preparation process includes
Following steps:
(1) matrix is processed: preparing matrix using punching machine punching type, the sawtooth on Vehicle Processing matrix；
(2) customization cold pressing connection punching block: by the structure preparation cold pressing connection punching block of the diamond saw blade of layout design；
(3) diamond segment is prepared；
(4) matrix and cutter head are combined together using cold pressing connection；
(5) it paints, examine.
2. the method according to claim 1 for preparing diamond saw blade using cold pressing connection, it is characterised in that: step (3)
In, the preparation process of diamond segment are as follows: preparing after raw material mix for diamond segment is subjected to cold moudling, then hot pressing
Sintering；When hot pressed sintering, sintering temperature is 790~850 DEG C, 50~60kg/cm of pressure2, soaking time 40-60 minutes.
3. the method according to claim 1 for preparing diamond saw blade using cold pressing connection, it is characterised in that: step (4)
In, the process of the cold pressing connection includes the following steps:
(a) it will be packed into cold pressing connection punching block after the saw bit matrix processed and diamond segment splicing；
(b) cold pressing assembled in step (a) connection punching block is fixed, then applies to the both ends of cold pressing connection punching block and hangs down
Directly in the loading force F of diamond segment outer end face, under the action of loading force F, by Buddha's warrior attendant at the zigzag intervals of saw bit matrix
The inside extruding of stone cutter head vertebra shape handle and generate plastic deformation, until the vertebra shape handle of diamond segment has fully embedded into and respectively saws on matrix
In gap between tooth.
4. the method according to claim 3 for preparing diamond saw blade using cold pressing connection, it is characterised in that: the load
Power F is 300-350KN.
5. the method according to claim 1 for preparing diamond saw blade using cold pressing connection, it is characterised in that: the disk edge
Angle theta with planar disk bottom is 120~170 °.
6. the method according to claim 1 for preparing diamond saw blade using cold pressing connection, it is characterised in that: the diamond
The saw bit matrix material of saw blade is 30CrMo steel, 34~38HRC of hardness；According to parts by weight, diamond segment raw materials
Composition are as follows:
18-28 parts of copper, 35-45 parts of iron, 3-18 parts of nickel, 2-10 parts of cobalt, 2-10 parts of tin, 3-12 parts of rare earth, 5-10 parts of WC powder；Liquid
0.4-1.2 parts of paraffin, 0.8-2.1 parts of diamond；The rare earth is Y or La powder.
7. the method according to claim 6 for preparing diamond saw blade using cold pressing connection, it is characterised in that: by weight
Number meter, diamond segment raw materials composition are as follows:
20-26 parts of copper, 37-42 parts of iron, 7-16 parts of nickel, 3-8 parts of cobalt, 4-9 parts of tin, 4-10 parts of rare earth, 6-8 parts of WC powder；Liquid stone
0.6-1.0 parts of wax, 1.0-1.9 parts of diamond.
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| CN111002002A (en) * | 2019-11-21 | 2020-04-14 | 江苏华昌工具制造有限公司 | Preparation process of porous laser welding sheet with high bonding force |
| CN112453412A (en) * | 2020-11-11 | 2021-03-09 | 河北小蜜蜂工具集团有限公司 | Sintered diamond circular saw blade processing technology |
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| CN111002002A (en) * | 2019-11-21 | 2020-04-14 | 江苏华昌工具制造有限公司 | Preparation process of porous laser welding sheet with high bonding force |
| CN112453412A (en) * | 2020-11-11 | 2021-03-09 | 河北小蜜蜂工具集团有限公司 | Sintered diamond circular saw blade processing technology |
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| CN110306097B (en) | 2021-08-20 |
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