CN213135045U - Hot-pressing sintering furnace for manufacturing diamond saw blade - Google Patents
Hot-pressing sintering furnace for manufacturing diamond saw blade Download PDFInfo
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- CN213135045U CN213135045U CN202021934436.5U CN202021934436U CN213135045U CN 213135045 U CN213135045 U CN 213135045U CN 202021934436 U CN202021934436 U CN 202021934436U CN 213135045 U CN213135045 U CN 213135045U
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Abstract
The utility model provides a hot pressing sintering furnace for making diamond saw blade, belong to diamond saw blade production facility technical field, the on-line screen storage device comprises a base, the stove outer covering and the middle cover body, be equipped with the annular groove on the base, the annular groove intussuseption is filled with sealed sand, the stove outer covering is cylindric and both ends are open, stove outer covering inner wall is equipped with heating element, the stove outer covering is used for placing on the base, the middle cover body includes the cylindric main part, the bottom of cylindric main part is open and the top is equipped with the cambered surface closing cap, the border of cambered surface closing cap extends to one side and forms annular connecting portion, annular connecting portion and cylindric main part welding form the middle cover body, the middle cover body is used for sealing the diamond saw blade and is located the stove; the utility model provides a hot pressing sintering furnace for making diamond saw blade can solve the technical problem that the welding seam became invalid easily between the dull and stereotyped and the cylindric main part of cover body top in the middle of the prior art.
Description
Technical Field
The utility model belongs to the technical field of diamond saw blade production facility, more specifically say, relate to a hot pressing sintering furnace for making diamond saw blade.
Background
The hot-pressing sintering of the diamond saw blade refers to that material particles forming the diamond saw blade are heated and pressurized at a specific temperature and pressure simultaneously, so that sintering and densification among the material particles are promoted, and the purpose of improving the strength and the cutting performance of the diamond saw blade is achieved. The hot-pressing sintering of diamond saw blade generally uses hot-pressing sintering furnace, and hot-pressing sintering furnace includes the stove outer covering and is located the middle cover body of stove outer covering, and diamond saw blade places at the middle cover internally, and the middle cover body pushes down diamond saw blade, and the heat that produces the stove outer covering simultaneously evenly transmits to self inside, heats diamond saw blade. The problem that exists is that the middle cover body top is equipped with the flat board and seals, and the flat board edge is passed through the welding seam with the cylindric main part top of the middle cover body and is linked as an organic whole, but this welding seam is easy to be broken and is lost efficacy, leads to middle cover body to scrap.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hot pressing fritting furnace for making diamond saw blade aims at solving the technical problem that the welding seam is easy to split between the dull and stereotyped and the cylindric main part of cover body top in the middle of the prior art and became invalid.
In order to achieve the above object, the utility model adopts the following technical scheme: the hot-pressing sintering furnace for manufacturing the diamond saw blade comprises a base, a furnace shell and an intermediate cover body;
an annular groove is formed in the base, and sealing sand is filled in the annular groove;
the furnace shell is cylindrical and has two open ends, the inner wall of the furnace shell is provided with a heating element, and the furnace shell is used for being placed on the base;
the middle cover body comprises a cylindrical main body, the bottom end of the cylindrical main body is open, an arc surface sealing cover is arranged at the top end of the cylindrical main body, an annular connecting portion is formed by extending the edge of the arc surface sealing cover to one side, the annular connecting portion is welded with the cylindrical main body to form the middle cover body, the middle cover body is used for sealing a diamond saw blade and is located in the furnace shell, and the bottom end of the cylindrical main body is located in the annular groove to form a sealed hot-pressing sintering cavity.
As another embodiment of this application, the top of cylindric main part is equipped with bearing structure, bearing structure is used for supporting annular connecting portion makes annular connecting portion with form the welding seam that supplies the welding rod to stretch into between the cylindric main part.
As another embodiment of the present application, the height of the welding seam is not more than 5mm, and the depth of the welding seam extending toward the center of the cylindrical body is not more than 5 mm.
As another embodiment of this application, bearing structure is annular breach groove, annular breach groove is seted up on the annular end face of cylindric main part, and is located the inner ring of annular end face, be equipped with annular lug on the terminal surface of annular connecting portion, annular lug is used for putting into annular breach groove.
As another embodiment of the present application, a side elevation of the annular notch groove is attached to the annular protrusion.
As another embodiment of the present application, a pressing block is provided on the cambered surface cover, and the pressing block is used for contacting and pressing the diamond saw blade.
As another embodiment of the application, the pressing block is provided with a blind hole, and the blind hole is used for a core fixing rod which penetrates through the diamond saw blade to penetrate.
As another embodiment of the present application, the pressing block, the arc-shaped sealing cover and the annular connecting portion are of an integrated structure, and the pressing block fills a cavity surrounded by the arc-shaped sealing cover and the annular connecting portion.
As another embodiment of this application, the top of cambered surface closing cap is equipped with the cushion, be equipped with the top plane that is used for contacting the pressure head on the cushion.
As another embodiment of this application, the stove outer covering is equipped with the insulating layer, the top of stove outer covering is equipped with thermal-insulated shrouding, heating element is for locating the heating wire on the insulating layer inner wall.
Compared with the prior art, the hot-pressing sintering furnace for manufacturing the diamond saw blade is provided with the cambered surface sealing cover, the edge of the cambered surface sealing cover is provided with the annular connecting part extending to one side, the cambered surface sealing cover and the annular connecting part form an integrated structure, the strength of the integrated structure is far greater than that of the existing flat plate-shaped sealing cover, and the integrated structure is not easy to deform under the action of high temperature because of internal stress, so that tearing force generated on a welding line with a cylindrical main body is prevented, and the welding line is prevented from cracking; in addition, the edge of the existing flat plate-shaped sealing cover is connected with the top end of the cylindrical main body at a right angle, so that the connecting force of the sealing cover and the cylindrical main body is easily concentrated at the corner, the welding seam at the position is cracked, the crack gradually spreads to the rest part, and finally the whole welding seam is cracked; and the utility model discloses a closing cap structure, the extending direction of annular connecting portion and the axial direction of cylindric main part are parallel, and the tip of annular connecting portion and the top of cylindric main part move towards parallelly, and the joint force between them can be even be used in the weld joint, ensure that the weld joint can not ftracture to solved the easy fracture of weld joint, lead to the condemned technical problem of the middle cover body.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic structural view of a hot-pressing sintering furnace for manufacturing a diamond saw blade according to an embodiment of the present invention in a use state;
FIG. 2 is a schematic structural diagram of an intermediate cover body in a hot-pressing sintering furnace for manufacturing a diamond saw blade according to an embodiment of the present invention;
FIG. 3 is an enlarged view taken at A in FIG. 2;
FIG. 4 is a schematic structural view of a joint between the cylindrical main body and the annular connecting portion constituting the intermediate cover body in the hot pressing sintering furnace for manufacturing the diamond saw blade according to the embodiment of the present invention, when not welded, as compared with FIG. 3;
fig. 5 is a schematic structural view of the hot pressing sintering furnace for manufacturing the diamond saw blade according to the embodiment of the present invention, when the annular connecting portion and the cylindrical main body constituting the middle cover body are separated.
In the figure: 1. a base; 11. sealing the sand; 2. a furnace shell; 21. a heating element; 22. a thermal insulation layer; 23. a heat insulation plate; 3. a middle cover body; 31. a cylindrical body; 32. an annular notch groove; 4. sealing the cover by the cambered surface; 41. briquetting; 5. an annular connecting portion; 51. an annular projection; 6. welding a gap; 61. an annular weld; 71. a diamond saw blade; 72. a core rod; 73. a pressure head; 74. an air inlet pipe; 75. an air outlet pipe; 76. an outer frame body; 77. a jack; 8. and a cushion block.
Detailed Description
In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1 and 2, a hot pressing sintering furnace for manufacturing a diamond saw blade according to the present invention will be described. The hot-pressing sintering furnace for manufacturing the diamond saw blade comprises a base 1, a furnace shell 2 and a middle cover body 3, wherein an annular groove is formed in the base 1, sealing sand 11 is filled in the annular groove, the furnace shell 2 is cylindrical, two ends of the furnace shell are open, a heating element 21 is arranged on the inner wall of the furnace shell 2, and the furnace shell 2 is used for being placed on the base 1; the middle cover body 3 comprises a cylindrical main body 31, the bottom end of the cylindrical main body 31 is open, the top end of the cylindrical main body 31 is provided with an arc surface sealing cover 4, the edge of the arc surface sealing cover 4 extends to one side to form an annular connecting part 5, the annular connecting part 5 and the cylindrical main body 31 are welded to form the middle cover body 3, the middle cover body 3 is used for sealing a diamond saw blade 71 and is positioned in a furnace shell 2, and the bottom end of the cylindrical main body 31 is positioned in an annular groove to form a sealed hot-.
Compared with the prior art, the hot-pressing sintering furnace for manufacturing the diamond saw blade is provided with the cambered surface sealing cover 4, the edge of the cambered surface sealing cover 4 is provided with the annular connecting part 5 extending to one side, the cambered surface sealing cover 4 and the annular connecting part 5 form an integral structure, the strength of the hot-pressing sintering furnace is far greater than that of the existing flat plate-shaped sealing cover, the deformation caused by the internal stress is not easy to generate under the action of high temperature, and the tearing force generated on the welding seam with the cylindrical main body 31 is prevented, so that the welding seam is prevented from cracking; in addition, the edge of the existing flat plate-shaped cover is connected with the top end of the cylindrical main body 31 at a right angle, so that the connecting force of the cover and the cylindrical main body 31 is easily concentrated at the corner, thereby causing the crack of the welding seam at the position, and the crack gradually spreads to the rest part, finally causing the crack of the whole welding seam; and the utility model discloses a closing cap structure, the extending direction of annular connecting portion 5 and the axial direction parallel of cylindric main part 31, the tip of annular connecting portion 5 and the top of cylindric main part 31 walk to parallel, and the power of connection between them can be even be used in the weld joint, ensures that the weld joint can not ftracture to solved the easy fracture of weld joint, leaded to middle cover body 3 condemned technical problem.
As a specific embodiment of the hot pressing sintering furnace for manufacturing diamond saw blade according to the present invention, please refer to fig. 4, the top end of the cylindrical main body 31 is provided with a supporting structure for supporting the annular connecting portion 5, and a welding gap 6 for the welding rod to extend into is formed between the annular connecting portion 5 and the cylindrical main body 31. The welding gap 6 facilitates the molten metal after the welding rod is melted to fill and form an annular weld 61, as shown in fig. 3, the open end of the annular connecting portion 5 is firmly connected with the top end of the cylindrical body 31 to form the intermediate cover 3.
As a specific embodiment of the hot pressing sintering furnace for manufacturing the diamond saw blade of the present invention, please refer to fig. 4, the height of the welding gap 6 is not greater than 5mm, and the depth of the welding gap 6 extending to the center of the cylindrical main body 31 is not greater than 5 mm. In fig. 4, a dimension H indicates the height of the welding gap 6, and a dimension W indicates the depth of the welding gap 6 extending toward the center of the cylindrical body 31, and may be the width of the welding gap 6. If the size of the welding gap 6 is too large, the molten metal is not solidified to form the annular weld 61 during welding, and the annular connecting portion 5 and the cylindrical body 31 cannot be effectively and firmly connected.
As a specific embodiment of the hot pressing sintering furnace for manufacturing diamond saw blade provided by the present invention, please refer to fig. 5, the supporting structure is the annular notch groove 32, the annular notch groove 32 is opened on the annular end surface of the cylindrical main body 31, and is located in the inner ring of the annular end surface, the annular projection 51 is arranged on the end surface of the annular connecting portion 5, and the annular projection 51 is used for placing the annular notch groove 32, as shown in fig. 4. Since the height of the annular projection 51 is greater than the height of the annular notched groove 32, when the annular projection 51 is placed in the annular notched groove 32, a gap is formed between the top end surface of the cylindrical main body 31 and the bottom end surface of the annular connecting portion 5, forming the welding gap 6.
As a specific embodiment of the hot pressing sintering furnace for manufacturing the diamond saw blade according to the present invention, please refer to fig. 4, the side elevation of the annular notch groove 32 is attached to the annular protrusion 51. Specifically, the side cylindrical surface of the annular notch groove 32 is attached to the outer cylindrical surface of the annular projection 51; the side vertical surface of the annular notch groove 32 can be combined with the annular bump 51 after being melted at high temperature during welding, and the annular notch groove and the annular bump are integrated after being cooled, so that the annular welding seam 61 has higher strength, and the annular connecting part 5 and the cylindrical main body 31 can be connected into a whole firmly all the time.
As a specific embodiment of the hot pressing sintering furnace for manufacturing diamond saw blade provided by the present invention, please refer to fig. 1, a pressing block 41 is disposed on the arc surface sealing cover 4, and the pressing block 41 is used for contacting and pressing down the diamond saw blade 71. During hot-pressing sintering, a plurality of diamond saw blades 71 are stacked in a stacking manner, and are fixed in position by a core fixing rod 72 penetrating through the center holes of the diamond saw blades 71; the number of the centering rods 72 in fig. 1 is three, and each centering rod 72 penetrates a string of diamond saw blades 71; the diamond saw blades 71 of the uppermost layer have the same height, and are in contact with the bottom surface of the compact 41 to receive the downward pressure applied to the compact 41.
As a specific embodiment of the hot pressing sintering furnace for manufacturing diamond saw blade provided by the present invention, please refer to fig. 1, a blind hole is provided on the pressing block 41, and the blind hole is used for the core fixing rod 72 passing through the diamond saw blade 71 to penetrate. The top end of the centering bar 72 is higher than the uppermost diamond saw blade 71 so as to ensure that the uppermost diamond saw blade 71 is fixed in position and does not move freely. It is necessary to provide the compact 41 with a blind hole for receiving the upper end of the centering rod 72 to ensure that the bottom surface of the compact 41 can smoothly contact and press down the diamond saw blade 71.
As a specific implementation manner of the hot pressing sintering furnace for manufacturing diamond saw blade provided by the present invention, please refer to fig. 1, the pressing block 41 and the arc sealing cover 4 and the annular connecting portion 5 are integrated into one structure, and the pressing block 41 fills up the cavity enclosed by the arc sealing cover 4 and the annular connecting portion 5. In fig. 1, the pressure piece 41, the glob cover 4 and the annular connecting part 5 are hatched in different directions for the sake of clarity, but in the embodiment, the two are actually of an integral structure; the integral structure has simple appearance and is convenient to use a die for manufacturing and molding. Specifically, the bottom surface of the pressing block 41 is flush with the lower end surface of the annular connecting part 5, so that the overall appearance is further simple, and the processing is convenient.
As a specific implementation manner of the hot pressing sintering furnace for manufacturing the diamond saw blade provided by the present invention, please refer to fig. 1, the top of the arc sealing cover 4 is provided with a cushion block 8, and the cushion block 8 is provided with a top plane for contacting the pressure head 73. The cambered surface closing cap 4 is arc-shaped on the surface, so if the cambered surface closing cap directly contacts with the bottom plane of the pressure head 73, the contact area is small, the transmission of the lower pressure is not facilitated, and the structure stability of the cambered surface closing cap 4 is also not facilitated. The above problem can be solved well by using the cushion block 8, the lower part of the cushion block 8 is connected with the cambered cover 4, and the top plane is used for bearing the downward pressure of the pressure head 73. Specifically, the cushion block 8 may be fixedly connected to the arc surface cover 4, or detachably connected to the arc surface cover 4. The ram 73 may be hydraulically driven to move from top to bottom, contact the pad 8, and transmit a downward force to the diamond saw blade 71 through the pad 8, the cambered cover 4, and the press block 41 in sequence. During hot-pressing sintering, the volume of the diamond saw blade 71 is reduced, and the middle cover body 3 and the furnace shell 2 move downwards slightly.
As a specific embodiment of the hot pressing sintering furnace for manufacturing diamond saw blade provided by the present invention, please refer to fig. 1, the furnace shell 2 is provided with a thermal insulation layer 22, the top of the furnace shell 2 is provided with a thermal insulation closing plate 23, and the heating element 21 is a heating wire disposed on the inner wall of the thermal insulation layer 22. The heat insulating layer 22 and the heat insulating closing plate 23 are used to prevent hot air in the furnace shell 2 from overflowing, causing waste of heat energy and forming heat pollution. Specifically, the heat insulation layer 22 and the heat insulation closing plate 23 may be an integrated structure; the hot-pressing sintering furnace is also provided with an air inlet pipe 74 and an air outlet pipe 75 which are used for circularly introducing protective gas into the hot-pressing sintering cavity; the protective gas can be hydrogen to form reducing atmosphere, so that the diamond saw blade 71 is prevented from being oxidized in the hot-pressing sintering process to influence the product quality; the sealing sand 11 may be common quartz sand.
Specifically, the pressure head 73 and the furnace shell 2 are of an integrated structure, and the pressure head 73 and the furnace shell 2 are connected into a whole and made of heat insulation materials, so that heat is prevented from being transmitted outwards; the pressure head 73 is provided with driving force by a jack 77 arranged on the outer frame body 76, the middle cover body 3 is pressed downwards, and the middle cover body 3 transmits the downward pressure to the diamond saw blade 71 to realize hot-pressing sintering; the guide strips are arranged on the two side columns of the external frame body 76, and the guide blocks matched with the guide strips are arranged on the outer wall of the furnace shell 2, so that the position of the furnace shell 2 is ensured to be correct, and the pressure head 73 can accurately align the cushion block 8 and the middle cover body 3.
The utility model provides a hot pressing fritting furnace's use does:
1) the diamond saw blade 71 penetrates into a core fixing rod 72, and the core fixing rod 72 is generally fixed on the base 1;
2) when the diamond saw blade 71 penetrates to a certain height, the middle cover body 3 covers the diamond saw blade 71 from top to bottom by using a hoisting tool such as a crown block and the like, and the pressing block 41 at the top is in contact with the diamond saw blade 71 at the uppermost layer; at this time, the lower end of the cylindrical body 31 is inserted into the sealing sand 11 (but not contacted with the base 1, the intermediate cover 3 has a space moving downwards), the inside of the intermediate cover 3 is isolated from the outside, and a sealed hot-pressing sintering chamber is formed; the base 1 is provided with a guide structure to ensure that the middle cover body 3 can accurately press the diamond saw blade 71, and the top end of the core rod 72 penetrates into a blind hole formed in the pressing block 41;
3) introducing hydrogen into the hot-pressing sintering cavity by using the air inlet pipe 74 and the air outlet pipe 75, and exhausting air in the cavity to prevent the diamond saw blade 71 from being oxidized in the hot-pressing sintering process;
4) the furnace shell 2 is placed on the cushion block 8 from top to bottom by using hoisting tools such as a crown block, and the pressure head 73 positioned at the top is contacted with the cushion block 8, so that the pressing force generated by the jack 77 can be transmitted to the diamond saw blade 71;
5) the heating wire is connected with a power supply to generate heat, and the jack 77 can generate pressing force, so that the hot-pressing sintering of the diamond saw blade 71 can be realized according to preset temperature and pressure curves.
The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A hot pressing fritting furnace for making diamond saw blade, its characterized in that includes:
the sealing device comprises a base, wherein an annular groove is formed in the base and filled with sealing sand;
the furnace shell is cylindrical and has two open ends, a heating element is arranged on the inner wall of the furnace shell, and the furnace shell is used for being placed on the base; and
the middle cover body, the middle cover body includes the cylindric main part, the open and top in bottom of cylindric main part is equipped with the cambered surface closing cap, the border of cambered surface closing cap extends to one side and forms annular connecting portion, annular connecting portion with cylindric main part welding forms the middle cover body, the middle cover body is used for the cover diamond saw piece and is located in the stove outer covering, the bottom of cylindric main part is located in the annular groove, form sealed hot pressing sintering chamber.
2. The hot pressing sintering furnace for manufacturing a diamond saw blade as claimed in claim 1, wherein a support structure is provided at a top end of the cylindrical body for supporting the annular connection portion and forming a welding gap between the annular connection portion and the cylindrical body into which a welding rod is inserted.
3. The hot press sintering furnace for manufacturing a diamond saw blade according to claim 2, wherein the height of the welding gap is not more than 5mm, and the depth of the welding gap extending toward the center of the cylindrical body is not more than 5 mm.
4. The hot press sintering furnace for manufacturing a diamond saw blade according to claim 3, wherein the support structure is an annular cutaway groove opened on the annular end surface of the cylindrical body and located at an inner ring of the annular end surface, and an annular projection is provided on an end surface of the annular connection portion, the annular projection being adapted to be fitted into the annular cutaway groove.
5. The hot press sintering furnace for manufacturing a diamond saw blade according to claim 4, wherein the side elevation of the annular cutaway groove is fitted with the annular projection.
6. The hot pressing sintering furnace for manufacturing a diamond saw blade according to claim 1, wherein the arc surface cover is provided with a pressing block for contacting and pressing down the diamond saw blade.
7. The hot pressing sintering furnace for manufacturing a diamond saw blade according to claim 6, wherein the pressing block is provided with a blind hole for a core fixing rod penetrating through the diamond saw blade.
8. The hot press sintering furnace for manufacturing a diamond saw blade according to claim 7, wherein the pressing block is of an integral structure with the capping and the annular connecting portion, and the pressing block fills a cavity surrounded by the capping and the annular connecting portion.
9. The hot pressing sintering furnace for manufacturing a diamond saw blade according to claim 1, wherein a cushion block is arranged above the cambered surface sealing cover, and a top plane for contacting the pressure head is arranged on the cushion block.
10. The hot pressing sintering furnace for manufacturing a diamond saw blade according to claim 1, wherein the furnace shell is provided with a heat insulating layer, the top of the furnace shell is provided with a heat insulating sealing plate, and the heating element is a heating wire arranged on the inner wall of the heat insulating layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021934436.5U CN213135045U (en) | 2020-09-07 | 2020-09-07 | Hot-pressing sintering furnace for manufacturing diamond saw blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021934436.5U CN213135045U (en) | 2020-09-07 | 2020-09-07 | Hot-pressing sintering furnace for manufacturing diamond saw blade |
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| Publication Number | Publication Date |
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| CN213135045U true CN213135045U (en) | 2021-05-07 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021934436.5U Active CN213135045U (en) | 2020-09-07 | 2020-09-07 | Hot-pressing sintering furnace for manufacturing diamond saw blade |
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| CN (1) | CN213135045U (en) |
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- 2020-09-07 CN CN202021934436.5U patent/CN213135045U/en active Active
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