CN113399666A - Powder metallurgy sintering method and powder metallurgy sintering device for diamond tool bit - Google Patents
Powder metallurgy sintering method and powder metallurgy sintering device for diamond tool bit Download PDFInfo
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- CN113399666A CN113399666A CN202110684940.7A CN202110684940A CN113399666A CN 113399666 A CN113399666 A CN 113399666A CN 202110684940 A CN202110684940 A CN 202110684940A CN 113399666 A CN113399666 A CN 113399666A
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- 238000004663 powder metallurgy Methods 0.000 title claims abstract description 98
- 229910003460 diamond Inorganic materials 0.000 title claims abstract description 90
- 239000010432 diamond Substances 0.000 title claims abstract description 90
- 238000005245 sintering Methods 0.000 title claims abstract description 89
- 238000000034 method Methods 0.000 title claims abstract description 29
- 238000010438 heat treatment Methods 0.000 claims abstract description 63
- 230000009466 transformation Effects 0.000 claims description 11
- 238000009413 insulation Methods 0.000 claims description 6
- 239000000843 powder Substances 0.000 claims description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- 229910052802 copper Inorganic materials 0.000 claims description 2
- 239000010949 copper Substances 0.000 claims description 2
- 230000006698 induction Effects 0.000 claims description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000005265 energy consumption Methods 0.000 abstract description 10
- 238000003825 pressing Methods 0.000 description 12
- 230000002093 peripheral effect Effects 0.000 description 8
- 101100328887 Caenorhabditis elegans col-34 gene Proteins 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012545 processing Methods 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000002490 spark plasma sintering Methods 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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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
- B22F3/10—Sintering only
- B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
-
- 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
- B22F3/003—Apparatus, e.g. furnaces
-
- 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
-
- 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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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Powder Metallurgy (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
The invention provides a powder metallurgy sintering method and a powder metallurgy sintering device for a diamond tool bit, and belongs to the technical field of powder metallurgy. The method solves the problems of high energy consumption and low production efficiency of the existing diamond tool bit powder metallurgy sintering. The diamond tool bit powder metallurgy sintering method comprises heat conduction heating and resistance heating, wherein the heat conduction heating is to put a diamond tool bit powder metallurgy formed part into a sintering mold which is continuously heated, and the temperature of the diamond tool bit powder metallurgy formed part is increased; and carrying out resistance heating in the heat conduction heating process, wherein the resistance heating is realized by electrifying the diamond tool bit powder metallurgy forming piece by adopting a lower pressure head and an upper pressure head. The diamond cutter head powder metallurgy sintering method simultaneously adopts heat conduction heating and resistance heating; the heat conduction heating energy enables the periphery of the forming piece to be rapidly heated, and the inner part and the periphery of the forming piece generate heat together after the forming piece is electrified; the diamond tool bit manufactured by the powder metallurgy sintering method not only reduces energy consumption, but also improves production efficiency.
Description
Technical Field
The invention belongs to the technical field of powder metallurgy, relates to powder metallurgy sintering, and particularly relates to a diamond tool bit powder metallurgy sintering method.
The invention belongs to the technical field of powder metallurgy, relates to powder metallurgy sintering, and particularly relates to a powder metallurgy sintering device.
Background
Powder metallurgy is a process technology for manufacturing metal materials, composite materials and various products by preparing metal powder or using the metal powder as a raw material and forming and sintering the metal powder. The diamond tool bit is usually manufactured by adopting a powder metallurgy process, the traditional diamond tool bit is formed by adopting a carbon mould and sintered in a sintering furnace, and the problems of less use times of the mould, different burr sizes of the diamond tool bit, high energy consumption, low production efficiency and the like exist.
Various powder metallurgy sintering methods and apparatuses have been proposed for this purpose, such as a powder metallurgy spark plasma sintering system (application No. 201520003345.2) in which powder crystal grains are heated by pulse current by energizing an upper die and a lower die; the method can change the material of the die, improve the using times of the die and is beneficial to controlling the burr not to be formed, but still has the problems of high energy consumption, low production efficiency and the like.
Disclosure of Invention
The invention provides a powder metallurgy sintering method for a diamond tool bit, and aims to solve the technical problem of reducing the energy consumption of powder metallurgy sintering of the diamond tool bit and improving the production efficiency.
The invention provides a powder metallurgy sintering device, and aims to solve the technical problems of reducing the energy consumption of powder metallurgy sintering of a diamond tool bit and improving the production efficiency.
The technical problem to be solved by the invention can be realized by the following technical scheme: a sintering method of diamond tool bit powder metallurgy comprises heat conduction heating and resistance heating, wherein the heat conduction heating is to put a diamond tool bit powder metallurgy forming piece into a sintering die which is continuously heated, and the diamond tool bit powder metallurgy forming piece is heated; and carrying out resistance heating in the heat conduction heating process, wherein the resistance heating is realized by electrifying the diamond tool bit powder metallurgy forming piece by adopting a lower pressure head and an upper pressure head.
A powder metallurgy sintering device comprises a frame, a sintering die, a lower pressure head, an upper pressure head and a voltage transformation circuit; the sintering mold is fixed on a frame, and a first driving assembly capable of enabling the lower pressure head to move up and down and a second driving assembly capable of enabling the upper pressure head to move up and down are arranged on the frame; the sintering mold heating device is characterized in that a heating assembly capable of heating the sintering mold is arranged on the frame; the lower pressure head is electrically connected with the transformation circuit through a first conductive piece, and the upper pressure head is electrically connected with the transformation circuit through a second conductive piece.
The heating assembly generally continuously heats the sintering mold, the sintering mold is internally provided with a mold cavity, and both the lower pressure head and the upper pressure head can be embedded into the mold cavity. The lower pressure head is embedded into the die cavity, the diamond tool bit powder metallurgy forming piece is placed into the die cavity, and the lower pressure head supports the diamond tool bit powder metallurgy forming piece. The diamond bit powder metallurgy formed piece is placed into the die cavity and immediately starts to be heated. The pressure head downstream in the drive of second drive assembly enables and goes up pressure head embedding die cavity and press on diamond segments powder metallurgy forming part, and this structure improves diamond segments powder metallurgy and presses and press area of contact between pressure head and the last pressure head down, reduces diamond segments powder metallurgy and presses and press and go up the pressure head between resistance. After the sintering is finished, the second driving assembly drives the upper pressure head to move upwards, and the first driving assembly drives the lower pressure head to move upwards until the diamond cutter head powder metallurgy sintered part is ejected out of the die cavity, so that the diamond cutter head powder metallurgy sintered part is convenient to transfer. Through vary voltage circuit and market electric wire netting electricity connection, and then can be according to diamond segments thickness nimble adjustment voltage and electric current, diamond segments is thicker usually, and output power is bigger.
Compared with the prior art, the diamond cutter head powder metallurgy sintering method adopts heat conduction heating and resistance heating at the same time. The heat conduction heating energy can rapidly heat the peripheral part of the forming piece, and the temperature of the inner part of the forming piece is usually lower than that of the peripheral part; the resistance of the diamond tool bit powder metallurgy forming piece is far larger than that of the conductive piece, the forming piece generates heat after being electrified, and the inner part and the peripheral part of the forming piece generate heat together, so that the temperature consistency of the inner part and the peripheral part of the forming piece is improved. The heat conduction heating and the resistance heating can also improve the temperature rise range in unit time, and particularly reduce the time length required by the temperature rise in the region between 900 ℃ and 1050 ℃. In summary, compared with the traditional sintering furnace for sintering and manufacturing the diamond tool bit, the powder metallurgy sintering method for manufacturing the diamond tool bit not only reduces the energy consumption, but also improves the production efficiency; the experimental production can save the energy consumption by more than 10 percent, save the time required by sintering a single diamond tool bit by more than 30 percent, and reduce the comprehensive manufacturing cost by more than 30 percent.
The diamond tool bit is heated and sintered by heat conduction alone, and is generally only suitable for processing the diamond tool bit with the thickness less than 2.5 mm; the reason is that when the thickness of the diamond tool bit is more than 2.5mm, the temperature of the inner part is heated in a region above 850 ℃ very slowly, and even the temperature required by sintering can not be reached, so that the diamond tool bit is not suitable for processing the diamond tool bit with the thickness of more than 2.5 mm. Generally, the thicker the diamond tip, the greater the resistance, making the powder metallurgy sintering method more suitable for manufacturing diamond tips with a thickness greater than 2.5 mm.
In the above method for sintering the diamond segments by powder metallurgy, when the diamond segment powder metallurgy forming piece is electrified, the voltage is less than 8V, and the current is more than 1000A. Adopt low-voltage heavy current to make the forming part more easily generate heat and heat conversion efficiency is higher, and then reduce diamond segments powder metallurgy sintering energy consumption.
In the above method for sintering the diamond segments by powder metallurgy, the resistance heating power is 3500W-8000W. The resistance of the diamond tool bit powder metallurgy forming part can be obtained through measurement, and then the resistance heating power can be determined according to experience, and the voltage can be estimated according to the correlation formula among the current, the voltage, the resistance and the power, so that the temperature rise amplitude can be improved, and the energy conversion efficiency can be improved.
Drawings
FIG. 1 is a schematic perspective view of a powder metallurgy sintering apparatus.
FIG. 2 is a schematic front view of the powder metallurgy sintering apparatus.
Fig. 3 is an enlarged view of a portion of fig. 2.
In the figure, 1, a frame; 1a, a bedplate; 2. sintering the mold; 3. a lower pressure head; 4. an upper pressure head; 5. a voltage transformation circuit; 6. a base plate; 7. a lower heat insulation layer; 8. an upper heat insulation layer; 9. a heating assembly; 10. a first mounting seat; 11. a first guide rail; 12. a first driving member; 13. a second mounting seat; 14. a second guide rail; 15. a second driving member; 16. an insulating member; 17. a first conductive member; 18. a second conductive member; 19. a top plate; 20. and (5) a workpiece.
Detailed Description
The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.
The diamond tool bit powder metallurgy sintering is to heat the diamond tool bit powder metallurgy forming piece to over 1000 ℃ so as to further compact the diamond tool bit powder metallurgy forming piece and eliminate partial or all pores in the diamond tool bit powder metallurgy forming piece.
A powder metallurgy sintering method for the diamond tool bit comprises heat conduction heating and resistance heating. The heat conduction heating is to put the powder metallurgy forming piece of the diamond tool bit into the sintering die 2 which is continuously heated, the powder metallurgy forming piece of the diamond tool bit immediately starts to be heated, the temperature of the powder metallurgy forming piece of the diamond tool bit rises, generally, the temperature rising speed of the peripheral part of the powder metallurgy forming piece of the diamond tool bit is higher than that of the inner part, and then the temperature of the inner part is lower than that of the peripheral part.
Simultaneously carrying out resistance heating in the heat conduction heating process, wherein the resistance heating is to electrify a diamond tool bit powder metallurgy forming piece by adopting a lower pressure head 3 and an upper pressure head 4; when the diamond tool bit powder metallurgy forming part is electrified, the voltage is less than 8V, and the current is more than 1000A; the resistance heating power is 3500W-8000W, and generally, the later the thickness of the diamond, the higher the resistance heating power. The resistance of the diamond tool bit powder metallurgy forming piece is far greater than that of the conductive piece, the diamond tool bit powder metallurgy forming piece generates heat after being electrified, the inner part of the diamond tool bit powder metallurgy forming piece and the peripheral part generate heat together, and the temperature consistency of the inner part and the peripheral part is improved.
As shown in fig. 1 to 3, a powder metallurgy sintering device suitable for diamond tool bit machining includes a frame 1, a sintering die 2, a lower ram 3, an upper ram 4 and a voltage transformation circuit 5.
The sintering die 2 is internally provided with a die cavity which is communicated up and down, and the cross section of the die cavity is consistent with that of the diamond tool bit to be sintered. A bedplate 1a is arranged on the frame 1, a bottom plate 6 is fixedly connected to the bedplate 1a, the sintering die 2 is positioned above the bottom plate 6, and a lower heat insulation layer 7 is arranged between the sintering die 2 and the bottom plate 6; a top plate 19 is arranged above the sintering die 2, an upper heat insulation layer 8 is arranged between the sintering die 2 and the top plate 19, and the top plate 19 is fixedly connected with the bedplate 1a through bolts, so that the sintering die 2 is fixed on the frame 1. The upper plate surface of the top plate 19 is flush with the plate surface of the bedplate 1a, so that the workpiece 20 can be conveniently pushed on the bedplate 1a and the top plate 19, and automatic feeding is conveniently realized. The structure is convenient for replacing the sintering die 2, can also reduce the temperature of the bedplate 1a, effectively maintains the temperature of the sintering die 2 and realizes the reduction of energy consumption. The top plate 19 and the bottom plate 6 are respectively provided with a avoiding hole corresponding to the die cavity, so that the workpiece 20 can be placed in the die cavity and eject the workpiece 20 out of the die cavity, the lower pressing head 3 and the upper pressing head 4 can be embedded into the die cavity, and the lower pressing head 3 and the upper pressing head 4 can abut against the workpiece 20.
A heating component 9 capable of heating the sintering die 2 is arranged on the frame 1; the heating assembly 9 is an electric heating wire heating assembly 9 or a high-frequency induction heating assembly 9, and the heating assembly 9 is positioned at the periphery of the sintering mold 2. The heating unit 9 is fixed to the platen 1a by the bottom plate 6 and the top plate 19, which facilitates maintenance of the heating unit 9.
The frame 1 is provided with a first driving component which can make the lower pressure head 3 move up and down and a second driving component which can make the upper pressure head 4 move up and down. The first driving assembly is located below the bedplate 1a and comprises a first mounting seat 10, the first mounting seat 10 is connected with the frame 1 through a first guide rail 11, the lower pressing head 3 is fixed on the first mounting seat 10, and a first driving piece 12 connected with the first mounting seat 10 is mounted on the frame 1. The second drive assembly is located platen 1 a's top, and the second drive assembly includes second mount pad 13, is connected through second guide rail 14 between second mount pad 13 and the frame 1, goes up pressure head 4 and fixes on second mount pad 13, installs the second driving piece 15 that is connected with second mount pad 13 on the frame 1.
The transformer circuit 5 is installed on the frame 1, the bedplate 1a, the first installation seat 10, the frame 1, the first guide rail 11 and other components are all made of steel, and then the bedplate 1a is electrically connected with the transformer circuit 5 through the first conductive piece 17, so that the lower pressing head 3 is electrically connected with the transformer circuit 5. The second mounting seat 13 is made of steel, and the second mounting seat 13 is electrically connected with the transformation circuit 5 through a second conductive member 18, so that the upper pressure head 4 is electrically connected with the transformation circuit 5. An insulating part 16 is arranged between the second guide rail 14 and the second driving part 15 and the second mounting seat 13, so that short circuit can be avoided. The second conductive member 18 comprises a plurality of stacked thin copper sheets, so that the resistance of the second conductive member 18 is far smaller than that of the diamond cutter head powder metallurgy forming member, the second conductive member 18 can be disturbed, the second conductive member 18 is driven to move when the second mounting seat 13 moves up and down, and the second conductive member 18 and the second mounting seat 13 are always connected.
The functions and advantages of each part of the powder metallurgy sintering device and the sequence of each step in the powder metallurgy sintering method of the diamond tool bit are further explained by explaining the process of processing the diamond tool bit by using the powder metallurgy sintering device. Firstly, placing a diamond tool bit powder metallurgy formed part on a platen 1a, wherein the powder metallurgy sintering device further comprises a control circuit, the control circuit controls a manipulator to push the diamond tool bit powder metallurgy formed part into an avoidance hole of a top plate 19, and the diamond tool bit powder metallurgy formed part naturally falls into a die cavity under the action of gravity and is supported by a lower pressure head 3; therefore, the diamond bit powder metallurgy formed part and the sintering die 2 are in clearance fit. Because the heating assembly 9 continuously heats the sintering die 2, the temperature of the sintering die 2 is 850-950 ℃, and the diamond bit powder metallurgy forming piece falls into the die cavity and immediately starts to be heated. Compared with the prior art, the temperature of the sintering die 2 is reduced, and the service life of the sintering die 2 is further prolonged.
The control circuit then controls the second drive member 15 to move the upper ram 4 downwardly until the upper ram 4 presses against the diamond-tipped powder metallurgy form. Normally, the voltage transformation circuit 5 is in an operating state, and the diamond bit powder metallurgy formed part is electrified when the upper pressure head 4 presses on the diamond bit powder metallurgy formed part. The end face sizes of the upper pressing head 4 and the lower pressing head 3 are matched with the end face size of the diamond tool bit powder metallurgy formed part, so that the contact area between the upper pressing head 4 and the lower pressing head 3 and the diamond tool bit powder metallurgy formed part is increased, and the resistance heating uniformity is improved.
The heating time is 2s-5s, and the larger the thickness of the diamond tool bit powder metallurgy forming piece is, the longer the heating time is.
Then, after the heating time is reached, the control circuit controls the second driving element 15 to enable the upper pressing head 4 to move upwards and controls the first driving element 12 to enable the lower pressing head 3 to move upwards until the powder metallurgy sintered part of the diamond tool bit is higher than the upper plate surface of the top plate 19.
And finally, the control circuit controls the manipulator to jack the diamond tool bit powder metallurgy sintered part.
Claims (10)
1. A sintering method for diamond tool bit powder metallurgy is characterized in that the sintering method for diamond tool bit powder metallurgy comprises heat conduction heating and resistance heating, wherein the heat conduction heating is to place a diamond tool bit powder metallurgy forming piece into a sintering die (2) which is continuously heated, and the temperature of the diamond tool bit powder metallurgy forming piece is increased; and resistance heating is carried out in the heat conduction heating process, wherein the resistance heating is realized by electrifying the diamond tool bit powder metallurgy forming piece by adopting a lower pressure head (3) and an upper pressure head (4).
2. The method of claim 1, wherein the diamond tip powder metallurgy sintered form is energized at a voltage of less than 8V and at a current of greater than 1000A.
3. The method of powder metallurgy sintering of diamond segments of claim 1 wherein the resistance heating power is 3500W to 8000W.
4. A method for powder metallurgical sintering of a diamond tip according to claim 1, 2 or 3, characterized in that the temperature of the sintering die (2) is 850-950 ℃.
5. A method of powder metallurgical sintering of a diamond tip according to claim 1, 2 or 3, wherein the period of the thermally conductive heating is 2s-5 s.
6. A powder metallurgy sintering device suitable for the diamond tool bit powder metallurgy sintering method according to any one of claims 1 to 5 comprises a machine frame (1), a sintering mold (2), a lower pressure head (3), an upper pressure head (4) and a voltage transformation circuit (5); the sintering mold (2) is fixed on the frame (1), and a first driving component capable of enabling the lower pressure head (3) to move up and down and a second driving component capable of enabling the upper pressure head (4) to move up and down are installed on the frame (1); the sintering machine is characterized in that a heating assembly (9) capable of heating the sintering mold (2) is arranged on the frame (1); the lower pressure head (3) is electrically connected with the transformation circuit (5) through a first conductive piece (17), and the upper pressure head (4) is electrically connected with the transformation circuit (5) through a second conductive piece (18).
7. The powder metallurgy sintering device according to claim 6, wherein the heating assembly (9) is located at the periphery of the sintering die (2), and the heating assembly (9) is a heating wire heating assembly or a high-frequency induction heating assembly.
8. The powder metallurgy sintering device according to claim 6, wherein a bottom plate (6) and a top plate (19) are installed on the frame (1), and a lower heat insulation layer (7) is arranged between the sintering die (2) and the bottom plate (6); an upper heat insulation layer (8) is arranged between the sintering die (2) and the top plate (19).
9. Powder metallurgy sintering device according to claim 6 or 7 or 8, characterized in that the second electrically conductive member (18) comprises a plurality of stacked thin copper sheets.
10. The powder metallurgy sintering device according to claim 6, 7 or 8, wherein the second driving assembly comprises a second mounting seat (13), the second mounting seat (13) is connected with the frame (1) through a second guide rail (14), the upper pressure head (4) is fixed on the second mounting seat (13), and a second driving piece (15) connected with the second mounting seat (13) is installed on the frame (1); the second conductive piece (18) is connected with the second mounting seat (13), and insulating pieces (16) are arranged between the second guide rail (14) and the second mounting seat (13) as well as between the second driving piece (15) and the second mounting seat (13).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110684940.7A CN113399666A (en) | 2021-06-21 | 2021-06-21 | Powder metallurgy sintering method and powder metallurgy sintering device for diamond tool bit |
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| CN202110684940.7A CN113399666A (en) | 2021-06-21 | 2021-06-21 | Powder metallurgy sintering method and powder metallurgy sintering device for diamond tool bit |
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|---|---|---|---|---|
| JP2000073106A (en) * | 1998-08-31 | 2000-03-07 | Ishikawajima Harima Heavy Ind Co Ltd | Hot press device |
| CN202845779U (en) * | 2012-10-11 | 2013-04-03 | 河北冀凯实业集团有限公司 | Groove diamond tool bit compacting die |
| CN103056450A (en) * | 2011-10-22 | 2013-04-24 | 湖南飞越新材料科技有限责任公司 | Manufacture method evenly distributing and orderly arranging diamond saw blades |
| CN104120297A (en) * | 2013-04-26 | 2014-10-29 | 富士模具株式会社 | Cu-diamond based solid phase sintered body having excellent heat resistance, heat sink using the same, electronic device using the heat sink, and method for producing Cu-diamond based solid phase sintered body |
| JP2017091980A (en) * | 2015-11-17 | 2017-05-25 | 株式会社第一機電 | Discharge plasma sintering device and continuous type discharge plasma sintering device |
| CN109128145A (en) * | 2018-11-02 | 2019-01-04 | 石家庄海川工具有限公司 | A kind of preparation method of diamond engineering thin-walled drill cutter head powdered metallurgical material and cutter head |
| CN112719270A (en) * | 2020-12-17 | 2021-04-30 | 广东纳德新材料有限公司 | Diamond tool bit and preparation method thereof |
-
2021
- 2021-06-21 CN CN202110684940.7A patent/CN113399666A/en active Pending
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|---|---|---|---|---|
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| CN103056450A (en) * | 2011-10-22 | 2013-04-24 | 湖南飞越新材料科技有限责任公司 | Manufacture method evenly distributing and orderly arranging diamond saw blades |
| CN202845779U (en) * | 2012-10-11 | 2013-04-03 | 河北冀凯实业集团有限公司 | Groove diamond tool bit compacting die |
| CN104120297A (en) * | 2013-04-26 | 2014-10-29 | 富士模具株式会社 | Cu-diamond based solid phase sintered body having excellent heat resistance, heat sink using the same, electronic device using the heat sink, and method for producing Cu-diamond based solid phase sintered body |
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