CN113932602A - Automatic continuous production device for rapid hot-pressing sintering - Google Patents
Automatic continuous production device for rapid hot-pressing sintering Download PDFInfo
- Publication number
- CN113932602A CN113932602A CN202111025003.7A CN202111025003A CN113932602A CN 113932602 A CN113932602 A CN 113932602A CN 202111025003 A CN202111025003 A CN 202111025003A CN 113932602 A CN113932602 A CN 113932602A
- Authority
- CN
- China
- Prior art keywords
- electrode
- cooling
- cooling water
- water pipe
- electrode cover
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000007731 hot pressing Methods 0.000 title claims abstract description 58
- 238000005245 sintering Methods 0.000 title claims abstract description 45
- 238000010924 continuous production Methods 0.000 title claims abstract description 22
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 28
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 28
- 239000010439 graphite Substances 0.000 claims abstract description 28
- 230000001681 protective effect Effects 0.000 claims abstract description 21
- 239000000498 cooling water Substances 0.000 claims description 89
- 238000001816 cooling Methods 0.000 claims description 70
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 59
- 238000007789 sealing Methods 0.000 claims description 16
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical group [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 229910001220 stainless steel Inorganic materials 0.000 claims description 9
- 239000010935 stainless steel Substances 0.000 claims description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Substances N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 7
- 230000007246 mechanism Effects 0.000 claims description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims description 5
- 230000001154 acute effect Effects 0.000 claims description 3
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen group Chemical group [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 238000003825 pressing Methods 0.000 abstract 6
- 230000000694 effects Effects 0.000 description 13
- 230000009471 action Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 8
- 239000000047 product Substances 0.000 description 7
- 230000000903 blocking effect Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 238000013461 design Methods 0.000 description 5
- 239000012530 fluid Substances 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000005260 corrosion Methods 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000017525 heat dissipation Effects 0.000 description 2
- 230000003116 impacting effect Effects 0.000 description 2
- 230000003647 oxidation Effects 0.000 description 2
- 238000007254 oxidation reaction Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 230000000630 rising effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000005452 bending Methods 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 239000000110 cooling liquid Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/04—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated adapted for treating the charge in vacuum or special atmosphere
-
- 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
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
- F27B5/12—Arrangement of devices for charging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
- F27B5/13—Arrangement of devices for discharging
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
- F27B5/14—Arrangements of heating devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D11/00—Arrangement of elements for electric heating in or on furnaces
- F27D11/08—Heating by electric discharge, e.g. arc discharge
- F27D11/10—Disposition of electrodes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D3/00—Charging; Discharging; Manipulation of charge
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B7/00—Heating by electric discharge
- H05B7/02—Details
- H05B7/12—Arrangements for cooling, sealing or protecting electrodes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B5/00—Muffle furnaces; Retort furnaces; Other furnaces in which the charge is held completely isolated
- F27B5/06—Details, accessories, or equipment peculiar to furnaces of these types
- F27B2005/062—Cooling elements
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27M—INDEXING SCHEME RELATING TO ASPECTS OF THE CHARGES OR FURNACES, KILNS, OVENS OR RETORTS
- F27M2003/00—Type of treatment of the charge
- F27M2003/04—Sintering
Abstract
The invention provides an automatic continuous production device for rapid hot-pressing sintering, which comprises a sintering cavity and a glove box, wherein a graphite mold, an upper pressing head and a lower pressing head which are respectively connected with different electrodes are arranged in the sintering cavity, and the upper pressing head and the lower pressing head move relatively and clamp the graphite mold between the upper pressing head and the lower pressing head; the glove box is filled with protective atmosphere and is internally provided with a manipulator capable of clamping the graphite mold; the glove box is connected with the sintering chamber through an openable connecting device. According to the automatic continuous production device provided by the invention, the manipulator which can move along the moving track is arranged in the glove box filled with the protective atmosphere, so that the graphite mold in the sintering cavity is quickly replaced into the glove box, and the high-temperature graphite mold is quickly cooled in the protective atmosphere, the automatic continuous production is favorably realized, and the production efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of sintering furnaces, in particular to an automatic continuous production device for rapid hot-pressing sintering.
Background
The rapid hot-pressing sintering equipment is applied to the sintering preparation of metals, ceramics, carbon materials and composite materials at present, the rapid hot-pressing sintering can pressurize raw materials simultaneously in the temperature rising process, a more compact sintered finished product can be obtained, the sintering time is greatly reduced, the increase of the grain size of the finished product is inhibited, so the compactness degree is better than that of normal-pressure sintering, however, the cooling time of the finished product after sintering at high temperature is longer, especially for some sintered finished products with larger size requirements, after a graphite mold filled with the raw materials is sintered into the finished product at the end of the temperature rising stage, the temperature of the mold with the larger size is higher, the cooling time is longer, and the continuous production and the production efficiency of the rapid hot-pressing sintering equipment are seriously influenced.
Disclosure of Invention
Aiming at the defects of the prior art, the invention aims to provide an automatic continuous production device for rapid hot-pressing sintering, which is used for communicating a sintering cavity with a glove box filled with protective atmosphere, so that a graphite mold taken out of the sintering cavity can be cooled in the protective atmosphere environment, and the problem of high-temperature oxidation is avoided.
The invention provides an automatic continuous production device for rapid hot-pressing sintering, which comprises a sintering chamber and a glove box, wherein,
the sintering cavity is internally provided with a graphite die, an upper pressure head and a lower pressure head which are respectively connected with different electrodes, and the upper pressure head and the lower pressure head move relatively and clamp the graphite die between the upper pressure head and the lower pressure head;
the glove box is filled with protective atmosphere and is internally provided with a manipulator capable of clamping the graphite mold; the glove box is connected with the sintering chamber through an openable connecting device.
The protective atmosphere is nitrogen; the manipulator is a six-degree-of-freedom manipulator, and the bottom of the manipulator is arranged on a moving track, so that the manipulator can move along the moving track. The moving area of the six-degree-of-freedom manipulator can be greatly enlarged by moving the track, so that the manipulator can conveniently take out the graphite mold in the sintering cavity and neatly place the graphite mold in the glove box.
And a heat exchanger is arranged in the glove box and is connected with an external water cooling device. And the heat exchanger is used for exchanging heat for the protective atmosphere in the glove box, so that the graphite mold in the glove box is quickly cooled.
One of the upper pressure head or the lower pressure head is driven by a driving mechanism to enable the upper pressure head or the lower pressure head to move oppositely. The vertical driving mechanism is arranged on the upper pressure head, and the upper pressure head can be driven to move downwards.
And a cooling cavity is arranged in the electrode, and the water cooling device is used for cooling the cooling cavity by introducing water into the cooling cavity. The cooling chamber of the electrode can quickly cool the electrode, thereby ensuring the quick and continuous production of the sintering chamber.
The electrode includes, electrode holder, electrode cover and condenser tube, wherein:
the electrode seat is used for being correspondingly connected with the electrode cover to form a closed cooling chamber;
the electrode cover is of a barrel-shaped structure, the front end of the electrode cover is provided with a hot-pressing plane, the outer layer of the electrode cover is a stainless steel layer, the inner layer of the electrode cover is a copper layer, and the outer layer is connected with the inner layer;
the cooling water pipe is arranged on the surface of the electrode seat in the cooling cavity, the water outlet of the cooling water pipe is close to or abutted against the inner surface of the hot pressing plane, and a water drainage channel and a water inlet channel communicated with the cooling water pipe are correspondingly arranged on the electrode seat. According to the technical scheme, the hot-pressing plane is directly cooled through the cooling water pipe, so that the cooling effect is better; through the structure of the inner copper and the outer steel, the hot-pressing strength is guaranteed, the technical requirements of low resistivity and high heat conduction efficiency are met, and meanwhile, the copper material is used as the inner wall of the cooling cavity, so that corrosion can be reduced, and the durability of the product is guaranteed.
The front end of the electrode seat is provided with a boss which is matched with the inner diameter of the electrode cover in size, so that the boss can be assembled in the electrode cover, a sealing groove and a sealing ring embedded in the sealing groove are arranged around the boss, and the sealing ring is hermetically connected with the inner layer of the electrode cover; the outer layer of the electrode cover is fixedly connected to the electrode seat through screws. Through the connection mode of boss, sealing washer and electrode cover, can effectively guarantee that whole cooling chamber for cooling has good leakproofness, can not lead to the leakage of coolant liquid, guarantees the safe operation of equipment.
The electrode cover is in a barrel shape. The electrode cover of cask shape, not only it is littleer on the processing degree of difficulty, the structure steadiness is better, simultaneously based on the technical scheme below, more be favorable to forming the flow of whirl to in-process flowing fully contacts with the electrode cover in order to reach the effect of cooling down to the electrode cover inner wall.
The thickness of the outer layer is smaller than that of the inner layer, so that the influence of low thermal conductivity, high resistance and low current transmission efficiency of the stainless steel of the outer layer is further reduced, and the structural performance is optimized.
The water inlet channels are more than two and are uniformly distributed on the electrode holder and radially extend to the edge of the electrode holder along the boss.
And two cooling water pipes are arranged and are symmetrically distributed in the cooling cavity.
The cooling water pipe is abutted against the inner surface of the hot pressing plane of the electrode cover, and a notch is formed in the edge of a water outlet of the cooling water pipe. The butt position of condenser tube has formed the effect that blocks to the cooling water, forces the passageway that the cooling water formed from between breach and the plane internal surface of hot pressing to flow to can increase the velocity of flow of rivers locally, improved the cooling effect of rivers.
And a groove is arranged on the inner surface of the hot pressing plane corresponding to the position of the cooling water pipe, and the size of the groove is larger than that of the pipe orifice of the cooling water pipe. The rivers that condenser tube sprays out impact the recess at first like this, then overflow all around after passing through the recess again, can cool off fast recess and electrode on every side, and the recess is more near apart from outer simultaneously, so can be to the outer quick cooling who closes on the recess.
Alternatively, the notches are provided in a plurality arranged around the circumference of the cooling water pipe. The water flow is sprayed to different directions through the plurality of gaps, so that the cooling water can cool the hot pressing plane, and the water flow in the mode can directly flow to the inlet of the drainage channel of the electrode holder in an approximately linear mode after being sprayed.
Alternatively, the notch is arranged at one side of the connecting line of the center of the cooling water pipe and the center of the electrode cover, and the two cooling water pipes are arranged in central symmetry relative to the center of the electrode cover. Because the condenser tube of non-breach position and electrode cover butt to blockked the cooling water, made the cooling water only can flow through the direction of breach, through the condenser tube of two central symmetric arrangements, the cooling water that makes two condenser tube's breach outflow can form around the rotatory whirl in center, makes the cooling water can with the more abundant contact of cooling surface. Compare with the breach structure that the axial was arranged at random, adopt the unilateral to arrange + the mode that central symmetry arranged combines, can reduce the cooling blind area (the slow region of water velocity) by a wide margin, make rivers rotate around the internal surface of hot pressing one side and cool down with abundant contact under two condenser tubes's effect, then it advances to be the spiral flow along the barrel-shaped inner wall of electrode shield to the direction of electrode holder under centrifugal effect together, and finally discharge through the entry of drainage channel on the electrode holder, not only prolonged the action route of rivers, also further more effectual lateral wall to the electrode shield cools down, this effect complements each other with the planar cooling effect of hot pressing, the whole effective cooling to the electrode shield. Compared with a common cooling structure for directly impacting the inner surface of the hot pressing plane, the cooling structure can prolong the walking path of the cooling water by more than 3 times, the higher the water flow speed is, the longer the walking path of the cooling water is, and the optimal walking path calculated by theory can be predicted to be close to 10 times.
Further optionally, the notch is a whole, a half-arc structure is formed along a half-circumference of the nozzle of the cooling water pipe, and the height of the notch is far smaller than the pipe diameter of the cooling water pipe. Through a flat breach of semicircle distribution to the fan-shaped region that a nearly 180 degrees angles was erupted in the messenger, forms the whole regional whirl at 360 degrees angles of whole under two condenser tube's combined action, makes the cooling more fast even.
Or, further optionally, the notches include a first notch and a second notch, wherein the first notch is oriented in a direction forming an angle of 30-45 degrees with a connecting line between the center of the self-cooling water pipe and the center of the electrode cover, and the second notch is oriented in a direction forming an angle of 90-120 degrees with a connecting line between the center of the self-cooling water pipe and the center of the electrode cover. The orientation refers to the orientation of the center of the notch. The rivers that wherein two first breachs come out can form the less whirl of radius, cools off the circular region that the hot pressing plane is close to the center, and the rivers that two second breachs come out can form the great whirl of radius, can cool off the region at hot pressing plane edge, then four strands of rivers are the spiral flow and advance to the direction of electrode holder along the barrel-shaped inner wall of electrode shield together under the effect of centrifugal force, finally discharge along drainage channel's entry.
Optionally, the water outlet of the cooling water pipe is close to the inner surface of the hot pressing plane, and the pipe orifice of the cooling water pipe is arranged in an inclined flat shape, so that an acute angle of no more than 30 degrees is formed between the water flow emergent direction of the cooling water pipe and the inner surface of the hot pressing plane. Through the structural design of the flat pipe orifice, the water flow can be emitted in a larger area and can be more fully contacted with the inner surface of the hot pressing plane for heat dissipation; through the structural design of inclination, avoided direct and the internal surface contact of hot pressing plane to make the fluid can form the whirl and cool down to hot pressing plane's whole internal surface, can not lead to some region to obstruct the fluid formation velocity of flow slow blind area because of the contact.
The implementation of the invention has the following beneficial effects:
according to the automatic continuous production device provided by the invention, the manipulator which can move along the moving track is arranged in the glove box filled with the protective atmosphere, so that the graphite mold in the sintering cavity is quickly replaced into the glove box, and the high-temperature graphite mold is quickly cooled in the protective atmosphere, the automatic continuous production is favorably realized, and the production efficiency is greatly improved; in addition, the potential safety hazard caused by manually taking out the die at the high-temperature stage can be avoided.
Drawings
FIG. 1 is a cross-sectional structural diagram of an electrode according to an embodiment of the present invention;
FIG. 2 is a schematic diagram showing a longitudinal sectional structure of an electrode according to an embodiment of the present invention;
FIG. 3 is a schematic diagram showing a longitudinal sectional structure of an electrode according to an embodiment of the present invention;
FIG. 4 is a schematic view of an installation structure of an electrode and a cooling water pipe according to an embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a cooling water pipe provided in an embodiment of the present invention;
FIG. 6 is a schematic view of an installation structure of an electrode and a cooling water pipe according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of a cooling water pipe provided in an embodiment of the present invention;
FIG. 8 is a schematic view of an installation structure of an electrode and a cooling water pipe according to an embodiment of the present invention;
FIG. 9 is a schematic structural diagram of a cooling water pipe provided in an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a cooling water pipe provided in an embodiment of the present invention;
FIG. 11 is a schematic view of an installation structure of an electrode and a cooling water pipe according to an embodiment of the present invention;
FIG. 12 is a schematic structural diagram of a cooling water pipe provided in an embodiment of the present invention;
fig. 13 is a schematic view of the overall structure of an automated continuous production apparatus according to an embodiment of the present invention.
Reference numerals in the drawings:
1-sintering chamber; 2-glove box;
10-an electrode;
11-an electrode holder; 111-boss; 112-water inlet channel; 113-a drainage channel;
12-an electrode shield; 121-an outer layer; 122-inner layer; 1221-grooves;
13-a cooling water pipe; 131-a notch; 1311-first gap; 1312-a second gap; 132-a water blocking sloping plate; 133-a nozzle;
21-an upper pressure head; 22-lower ram; 23-a drive mechanism;
30-a graphite mold;
40-a manipulator;
50-connecting means.
Detailed Description
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
As shown in fig. 13, the present invention provides an automated continuous production apparatus for rapid hot press sintering, comprising a sintering chamber 1 and a glove box 2, wherein,
the sintering cavity 1 is internally provided with a graphite die 30, an upper pressure head 21 and a lower pressure head 22 which are respectively connected with different electrodes, and the upper pressure head 21 and the lower pressure head 22 move relatively and clamp the graphite die 30 between the upper pressure head 21 and the lower pressure head 22;
the glove box 2 is filled with protective atmosphere and is internally provided with a manipulator 40 capable of clamping the graphite mold 30; the glove box 2 is connected to the sintering chamber 1 by means of an openable connection 50. The connection means 50 is typically connected to the door of the sintering chamber 1 in the glove box 2 and is connected and sealed around the door of the sintering chamber 1 to ensure that the protective atmosphere inside the glove box 2 is isolated from the environment.
The protective atmosphere is nitrogen, correspondingly, vacuumizing equipment and nitrogen filling equipment can be arranged in the glove box, after the glove box is closed, a door of the sintering cavity is opened, vacuumizing operation is firstly carried out by the vacuumizing equipment, and then the glove box and the sintering cavity are filled with nitrogen as protective gas;
the robot 40 is a six-degree-of-freedom robot, and the bottom of the robot 40 is disposed on a moving track so that the robot can move along the moving track. The moving area of the six-degree-of-freedom manipulator can be greatly enlarged by moving the track, so that the manipulator can conveniently take out the graphite mold in the sintering cavity and neatly place the graphite mold in the glove box.
The glove box 2 is internally provided with a heat exchanger (not shown in the figure), the heat exchanger is connected with an external water cooling device (not shown in the figure), the heat exchanger can be a fin type heat exchanger, is arranged in the protective atmosphere in the glove box, is in contact with the protective atmosphere to exchange heat, and then drives cooled water to circularly flow through the water cooling device to take away heat, and the water cooling device usually comprises a refrigerator, a water pump and a corresponding water circulation pipeline. The heat exchanger exchanges heat with the protective atmosphere in the glove box, so that the graphite mold 30 in the glove box 2 is rapidly cooled.
One of the upper press head 21 or the lower press head 22 is driven by a driving mechanism 23 to move the two heads towards each other. The vertical driving mechanism is arranged on the upper pressure head, and the upper pressure head can be driven to move downwards. Correspondingly, holes for allowing the electrodes 10 and the like to pass through are provided on the upper pressure head 21 and the wall of the sintering chamber 1 corresponding to the electrodes 10 connected to the upper pressure head.
A cooling cavity is arranged inside the electrode 10, and water is introduced into the cooling cavity for cooling through the water cooling device. The cooling chamber of the electrode 10 enables a rapid cooling of the electrode, thus ensuring a rapid and continuous production of the sintering chamber.
As shown in fig. 1 to 12, the electrode includes an electrode holder 11, an electrode cover 12, and a cooling water pipe 13, wherein:
the electrode holder 11 is used to be correspondingly connected with the electrode cover 12 to form a closed cooling chamber (as shown in fig. 2-3), the cooling chamber is used for water cooling, the cooling chamber is generally cylindrical, and can also be square-cylindrical or other shapes, but in order to ensure cooling backwater, especially in the design of the rotational flow structure used in the embodiment, the cooling chamber is optimally cylindrical; the electrode holder 11 may be round or square, a plurality of bolt holes connected with the electrode cover 12 through screws are arranged on the electrode holder 11, and correspondingly, threaded holes connected with the bolts are arranged at the end part of the electrode cover 12
The electrode cover 12 is of a barrel-shaped structure, the front end of the electrode cover 12 is provided with a hot-pressing plane, the outer layer 121 of the electrode cover 12 is a stainless steel layer, the inner layer 122 is a copper layer, and the outer layer 121 is connected with the inner layer 122; the front end of the electrode cover 12 is a working end and is used for hot pressing, because the electrode cover needs to bear pressure in the hot pressing process, a hot pressing plane connected with the graphite die adopts a stainless steel layer, the supporting strength and the deformation resistance of the stainless steel layer are improved, the copper layer is used as a wall of a cooling cavity, the corrosion can be reduced, the heat conducting property and the electric conductivity of copper are good, the resistivity is low, and the resistance can be integrally reduced;
the electrode holder 11 surface in the cooling chamber is installed to condenser tube 13, and condenser tube 13's delivery port is close or the butt is in the planar internal surface of hot pressing to be equipped with drainage channel 113 and the inhalant canal 112 that communicates with condenser tube 13 on electrode holder 11 correspondingly, the cooling water enters into condenser tube 13 through inhalant canal 112, directly carries out the cooling of cooling down to the planar internal surface of hot pressing by condenser tube 13, then discharges water through drainage channel 113 on the electrode holder 11. According to the technical scheme, the hot-pressing plane is directly cooled through the cooling water pipe 13, so that the cooling effect is better; through the structure of the inner copper and the outer steel, the hot-pressing strength is guaranteed, the technical requirements of low resistivity and high heat conduction efficiency are met, and meanwhile, the copper material is used as the inner wall of the cooling cavity, so that corrosion can be reduced, and the durability of the product is guaranteed.
A boss 111 matched with the inner diameter of the electrode cover 12 is arranged at the front end of the electrode holder 11, so that the boss can be assembled in the electrode cover 12, a sealing groove and a sealing ring embedded in the sealing groove are arranged around the boss, the sealing ring is hermetically connected with the inner layer of the electrode cover 12, and the sealing ring is usually made of high-temperature-resistant materials; the outer layer of the electrode cover 12 is fastened and connected on the electrode holder 11 through screws. Through the connection mode of the boss 111, the sealing ring and the electrode cover 12, the good sealing performance of the whole cooling chamber for cooling can be effectively ensured, the leakage of cooling liquid can not be caused, and the safe operation of equipment is ensured.
The electrode cover 12 is in the shape of a cylinder. The electrode cover 12 of cask shape, not only it is littleer on the processing degree of difficulty, the structure steadiness is better, simultaneously based on the technical scheme below, more be favorable to forming the flow of whirl to in-process flowing and electrode cover 12 fully contact in order to reach the effect of cooling to electrode cover 12 inner wall.
The thickness of the outer layer 121 is smaller than that of the inner layer 122, so that the influence of low thermal conductivity, high resistance and low current transmission efficiency of the stainless steel of the outer layer 121 is further reduced, the structural performance is optimized, and bolt connection can be installed by ensuring the thickness of the connecting end of the outer layer 121.
The inlet channel 112 is provided with more than two, evenly distributed on the electrode holder 11, and along the boss is radial extension to the edge of electrode holder 11, and corresponding drainage channel's quantity can be the same with inlet channel, adopts the interval arrangement, also can only set up a drainage channel. In this embodiment, 2 inlet channels and 2 drainage channels are provided, and are arranged at intervals and radially extend towards the edge of the electrode holder.
Two cooling water pipes 13 are arranged and symmetrically distributed in the cooling cavity.
The cooling water pipe 13 is abutted against the inner surface of the hot pressing plane of the electrode cover 12, and a notch 131 is formed at the edge of the water outlet of the cooling water pipe 13. The abutting part of the cooling water pipe 13 has a blocking effect on the cooling water, and the cooling water is forced to flow out from a channel formed between the notch 131 and the inner surface of the hot pressing plane, so that the flow speed of the water flow can be locally increased, and the cooling effect of the water flow is improved.
Corresponding to the position of the cooling water pipe 13, a groove 1221 (shown in fig. 3) is formed on the inner surface of the hot pressing plane, and the size of the groove 1221 is larger than that of the pipe orifice of the cooling water pipe 13. The rivers that condenser tube 13 sprays out impact recess 1221 at first like this, then overflow to all around after recess 1221 again, can cool off recess 1221 and electrode on every side fast, and recess 1221 is closer to the skin simultaneously, so can cool off the skin that closes on recess 1221 fast.
Alternatively, the notches are provided in a plurality arranged around the circumference of the cooling water pipe 13 (as shown in fig. 4 to 5). The water flow is sprayed in different directions through the plurality of notches 131, so that the cooling water can cool the hot pressing plane, and the water flow in this way is sprayed to directly flow to the inlet of the drainage channel 113 of the electrode holder 11 in an approximately straight line manner.
Alternatively, the notches are provided in a one-sided arrangement with respect to the center of the cooling water pipe 13, which is connected to the center of the electrode cover 12, and the two cooling water pipes 13 are arranged in a central symmetry with respect to the center of the electrode cover 12 (as shown in fig. 6 to 12). Because the cooling water pipe 13 at the non-notch position is abutted against the electrode cover 12, cooling water is blocked, the cooling water can only flow in the direction of the notch, and the cooling water flowing out of the notches of the two cooling water pipes 13 can form rotational flow rotating around the center through the two cooling water pipes 13 arranged in central symmetry, so that the cooling water can be more fully contacted with a cooling surface. Compared with the notch structure which is randomly arranged in the axial direction, the mode of combining unilateral arrangement and central symmetrical arrangement is adopted, the cooling blind area (the area with slow water flow speed) can be greatly reduced, water flow is enabled to rotate around the inner surface of the hot-pressing sheet surface under the action of the two cooling water pipes 13 to be fully contacted and cooled, then the water flow moves forwards in a spiral shape along the barrel-shaped inner wall of the electrode cover 12 towards the electrode holder 11 under the centrifugal action, and finally the water flow is discharged through the inlet of the water discharge channel 113 on the electrode holder 11, so that the action path of the water flow is prolonged, the side wall of the electrode cover 12 is further and more effectively cooled, the action and the cooling action of the hot-pressing plane supplement each other, and the whole electrode cover 12 is effectively cooled. Compared with a common cooling structure for directly impacting the inner surface of the hot pressing plane, the cooling structure can prolong the walking path of the cooling water by more than 3 times, the higher the water flow speed is, the longer the walking path of the cooling water is, and the optimal walking path calculated by theory can be predicted to be close to 10 times.
Further alternatively, the notch is a whole body, and forms a half-arc structure along half of the circumference of the nozzle of the cooling water pipe 13, and the height of the notch is much smaller than the pipe diameter of the cooling water pipe 13 (as shown in fig. 8-10). Through a flat breach of semicircle distribution to the fan-shaped region that a nearly 180 degrees angles was erupted in the messenger, forms the whole regional whirl at 360 degrees angles of whole under two condenser tubes 13's combined action, makes the cooling more fast even.
In particular, in order to further reduce the dead zone of slow water flow, as shown in fig. 9, a water blocking sloping plate 132 which extends obliquely to the bottom edge of the notch and crosses the diameter is arranged on the other side of the pipe orifice of the cooling water pipe without the notch, the water blocking sloping plate 132 can guide and block the water flow at the outlet of the cooling water pipe, the region of slow water flow at the outlet of the cooling water pipe caused by the blocking of the electrode cover 12 is reduced, and in the process of forming the rotational flow in the cooling chamber after the cooling water flows out from the cooling water pipe 13, the sloping surface of the water blocking sloping plate 132 can further guide the rotational flow, and the dead zone caused by slow water flow speed due to vertical contact is avoided.
Alternatively, as shown in fig. 6 to 7, the notch 131 includes a first notch 1311 and a second notch 1312, wherein the first notch is oriented at an angle a of 30 to 45 degrees from the line connecting the center of the self-cooling water pipe 13 and the center of the electrode cover 12, and the second notch is oriented at an angle B of 90 to 120 degrees from the line connecting the center of the self-cooling water pipe 13 and the center of the electrode cover 12. The orientation refers to the orientation of the center of the notch. The rivers that wherein two first breachs come out can form the less whirl of radius, cool off the circular region that the hot pressing plane is close to the center, and the rivers that two second breachs come out can form the great whirl of radius, can cool off the region at hot pressing plane edge, then four strands of rivers are the spiral flow and advance to electrode holder 11's direction along the barrel-shaped inner wall of electrode housing 12 together under the effect of centrifugal force, finally discharge along drainage channel 113's entry.
Alternatively, the water outlet of the cooling water pipe 13 is close to the inner surface of the hot pressing plane, and the nozzle 133 of the cooling water pipe 13 is formed in an inclined flat shape (as shown in fig. 11 to 12) such that the water flow exiting direction of the cooling water pipe 13 forms an acute angle of not more than 30 degrees with the inner surface of the hot pressing plane. Through the structural design of the flat pipe orifice, the water flow can be emitted in a larger area and can be more fully contacted with the inner surface of the hot pressing plane for heat dissipation; through the structural design of inclination, avoided direct and the internal surface contact of hot pressing plane to make the fluid can form the whirl and cool down to hot pressing plane's whole internal surface, can not lead to some region to obstruct the fluid formation velocity of flow slow blind area because of the contact.
According to the electrode provided by the invention, copper is used as a main heat transfer part of the electrode, the stainless steel is coated on the outer layer, the whole electrode has good electric and thermal conductivity, and meanwhile, when the whole electrode is heated, due to the fact that the hardness, tensile strength, bending resistance and oxidation resistance of the stainless steel electrode on the outer layer are high, the electrode cannot deform, break and fracture in the working process, and normal work of a rapid hot-pressing sintering furnace can be guaranteed. The electrode is internally provided with a water cooling structure, and when the sample sintering is finished, the water cooling structure can rapidly cool the electrode through a circulating water system, so that the electrode can be ensured to be normally sintered by rapid hot pressing in continuous work.
The implementation of the invention has the following beneficial effects:
according to the automatic continuous production device provided by the invention, the manipulator which can move along the moving track is arranged in the glove box filled with the protective atmosphere, so that the graphite mold in the sintering cavity is quickly replaced into the glove box, and the high-temperature graphite mold is quickly cooled in the protective atmosphere, the automatic continuous production is favorably realized, and the production efficiency is greatly improved.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (14)
1. An automatic continuous production device for rapid hot-pressing sintering, which comprises a sintering chamber and a glove box and is characterized in that,
the sintering cavity is internally provided with a graphite die, an upper pressure head and a lower pressure head which are respectively connected with different electrodes, and the upper pressure head and the lower pressure head move relatively and clamp the graphite die between the upper pressure head and the lower pressure head;
the glove box is filled with protective atmosphere and is internally provided with a manipulator capable of clamping the graphite mold; the glove box is connected with the sintering chamber through an openable connecting device.
2. The automated continuous production apparatus according to claim 1,
the protective atmosphere is nitrogen; the manipulator is a six-degree-of-freedom manipulator, and the bottom of the manipulator is arranged on a moving track, so that the manipulator can move along the moving track.
3. The automated continuous production apparatus according to claim 1,
and a heat exchanger is arranged in the glove box and is connected with an external water cooling device.
4. The automated continuous production apparatus according to claim 1,
one of the upper pressure head or the lower pressure head is driven by a driving mechanism to enable the upper pressure head or the lower pressure head to move oppositely.
5. The automated continuous production apparatus according to claim 1,
and a cooling cavity is arranged in the electrode, and the water cooling device is used for cooling the cooling cavity by introducing water into the cooling cavity.
6. The electrode of claim 5,
the electrode comprises an electrode seat, an electrode cover and a cooling water pipe, wherein:
the electrode seat is used for being correspondingly connected with the electrode cover to form a closed cooling chamber;
the electrode cover is of a barrel-shaped structure, the front end of the electrode cover is provided with a hot pressing plane, the outer layer of the electrode cover is a stainless steel layer, the inner layer of the electrode cover is a copper layer, and the outer layer is connected with the inner layer;
the electrode base surface in the cooling chamber is installed to condenser tube, and condenser tube's delivery port is close or the butt is in hot pressing planar internal surface to be equipped with drainage channel and the inhalant canal with condenser tube intercommunication correspondingly on the electrode base.
7. The electrode of claim 6,
the front end of the electrode seat is provided with a boss which is matched with the inner diameter of the electrode cover in size, so that the boss can be assembled in the electrode cover, a sealing groove and a sealing ring embedded in the sealing groove are arranged around the boss, and the sealing ring is hermetically connected with the inner layer of the electrode cover; the outer layer of the electrode cover is fixedly connected to the electrode seat through screws.
8. The electrode of claim 6,
the electrode cover is in a barrel shape;
the thickness of the outer layer is smaller than that of the inner layer;
the water inlet channels are more than two and are uniformly distributed on the electrode holder and radially extend to the edge of the electrode holder along the boss;
and two cooling water pipes are arranged and are symmetrically distributed in the cooling cavity.
9. The electrode of claim 6,
the cooling water pipe is abutted against the inner surface of the hot pressing plane of the electrode cover, and a notch is formed in the edge of a water outlet of the cooling water pipe;
and a groove is arranged on the inner surface of the hot pressing plane corresponding to the position of the cooling water pipe, and the size of the groove is larger than that of the pipe orifice of the cooling water pipe.
10. The electrode of claim 9,
the notches are arranged in a plurality of circumferential arrangements around the cooling water pipe.
11. The electrode of claim 9,
the notch is arranged on one side of a connecting line of the center of the cooling water pipe and the center of the electrode cover, and the two cooling water pipes are arranged in central symmetry relative to the center of the electrode cover.
12. The electrode of claim 9,
the breach is a whole, forms the structure of half arc along condenser tube's orificial half circumference to the height of breach is far less than condenser tube's pipe diameter.
13. The electrode of claim 9,
the notch comprises a first notch and a second notch, wherein the position of the first notch is in the direction forming an included angle of 30-45 degrees with the connecting line of the center of the self-cooling water pipe and the center of the electrode cover, the position of the second notch is in the direction forming an included angle of 90-120 degrees with the connecting line of the center of the self-cooling water pipe and the center of the electrode cover, and the position refers to the position of the center of the notch.
14. The electrode of claim 9,
the water outlet of the cooling water pipe is close to the inner surface of the hot pressing plane, and the pipe orifice of the cooling water pipe is arranged in an inclined flat shape, so that an acute angle of no more than 30 degrees is formed between the water flow emergent direction of the cooling water pipe and the inner surface of the hot pressing plane.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111025003.7A CN113932602B (en) | 2021-09-02 | 2021-09-02 | Automatic continuous production device for rapid hot-pressing sintering |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111025003.7A CN113932602B (en) | 2021-09-02 | 2021-09-02 | Automatic continuous production device for rapid hot-pressing sintering |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113932602A true CN113932602A (en) | 2022-01-14 |
| CN113932602B CN113932602B (en) | 2023-10-31 |
Family
ID=79274834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111025003.7A Active CN113932602B (en) | 2021-09-02 | 2021-09-02 | Automatic continuous production device for rapid hot-pressing sintering |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113932602B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1223162A (en) * | 1968-06-11 | 1971-02-24 | Jan-Erik Oestberg | Improvements in electrodes for electric arc furnaces |
| NL7017046A (en) * | 1969-11-21 | 1971-05-25 | ||
| EP0109356A2 (en) * | 1982-11-12 | 1984-05-23 | Arc Technologies Systems, Ltd. | Electrode for high temperature processes and its use |
| US4965812A (en) * | 1988-12-07 | 1990-10-23 | Sorg Gmbh & Co. Kg | Electrode for a glass melting |
| US20060104849A1 (en) * | 2003-02-25 | 2006-05-18 | Shuji Tada | Sintering method and device |
| CN201532099U (en) * | 2009-11-20 | 2010-07-21 | 郑州磨料磨具磨削研究所 | Double-body controlled atmosphere sintering press furnace |
| CN105135873A (en) * | 2015-08-05 | 2015-12-09 | 清华大学 | Dynamic pressure electric pulse double-field control sintering furnace and sintering method |
| CN207766595U (en) * | 2017-12-19 | 2018-08-24 | 哈尔滨理工大学 | A kind of device being applied to cooling heating electrode |
| CN211939046U (en) * | 2020-01-19 | 2020-11-17 | 秦文隆 | Lifting type atmosphere sintering device |
| CN112682954A (en) * | 2020-12-30 | 2021-04-20 | 中国航天空气动力技术研究院 | Electrode of electric arc heater |
-
2021
- 2021-09-02 CN CN202111025003.7A patent/CN113932602B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1223162A (en) * | 1968-06-11 | 1971-02-24 | Jan-Erik Oestberg | Improvements in electrodes for electric arc furnaces |
| NL7017046A (en) * | 1969-11-21 | 1971-05-25 | ||
| EP0109356A2 (en) * | 1982-11-12 | 1984-05-23 | Arc Technologies Systems, Ltd. | Electrode for high temperature processes and its use |
| US4965812A (en) * | 1988-12-07 | 1990-10-23 | Sorg Gmbh & Co. Kg | Electrode for a glass melting |
| US20060104849A1 (en) * | 2003-02-25 | 2006-05-18 | Shuji Tada | Sintering method and device |
| CN201532099U (en) * | 2009-11-20 | 2010-07-21 | 郑州磨料磨具磨削研究所 | Double-body controlled atmosphere sintering press furnace |
| CN105135873A (en) * | 2015-08-05 | 2015-12-09 | 清华大学 | Dynamic pressure electric pulse double-field control sintering furnace and sintering method |
| CN207766595U (en) * | 2017-12-19 | 2018-08-24 | 哈尔滨理工大学 | A kind of device being applied to cooling heating electrode |
| CN211939046U (en) * | 2020-01-19 | 2020-11-17 | 秦文隆 | Lifting type atmosphere sintering device |
| CN112682954A (en) * | 2020-12-30 | 2021-04-20 | 中国航天空气动力技术研究院 | Electrode of electric arc heater |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113932602B (en) | 2023-10-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101837879A (en) | Screw sealing feeder | |
| CN113932602A (en) | Automatic continuous production device for rapid hot-pressing sintering | |
| CN105666061B (en) | A kind of radiator preparation technology of good seal performance | |
| CN101935723A (en) | Copper cooling wall with reinforced piping structure | |
| CN113847818A (en) | Electrode for rapid hot-pressing sintering | |
| CN216065968U (en) | Electrode nozzle with cooling mechanism for air plasma cutting gun | |
| CN102656415B (en) | Electrode for direct current continuous arc furnace | |
| US5233625A (en) | Metallurgical vessel with metallic electrode having readily replaceable wear part | |
| CN202322929U (en) | Online water cooling or air cooling quenching device for accurate aluminum profiles | |
| CN214553347U (en) | Novel heat dissipation steel ring structure of cubic apparatus press | |
| CN109794212B (en) | High-temperature reaction kettle | |
| CN211595730U (en) | Quenching die with built-in circulating water channel, internal circulating water die and leveling tool | |
| CN201301359Y (en) | Step progressive baffle jacket of polysilicon reduction furnace | |
| CN201669389U (en) | Swirling flow tank type crystallization roller | |
| CN113390266A (en) | Cooling device for transition zone of smelting reduction furnace | |
| CN216066635U (en) | High temperature resistant baffle for plastic working | |
| CN201785413U (en) | Copper stave with piping reinforcement structure | |
| CN216095963U (en) | Aluminum shell female die with water cooling function | |
| CN216655817U (en) | Hot extrusion forming die for red copper products | |
| CN217727096U (en) | Die casting machine charging barrel with double-head cooling function | |
| CN215614942U (en) | Injection punch with self-cooling function | |
| CN216585066U (en) | Wear-resisting dabber tooth portion response guenching unit | |
| CN113308594A (en) | Spiral quenching device | |
| CN115404414B (en) | Round steel heat treatment and equipment | |
| CN218015722U (en) | Melting cup assembly and die casting machine |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |