CN114147232A - Tundish system active alarm device for preparing metal powder through gas atomization - Google Patents
Tundish system active alarm device for preparing metal powder through gas atomization Download PDFInfo
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- CN114147232A CN114147232A CN202111433580.XA CN202111433580A CN114147232A CN 114147232 A CN114147232 A CN 114147232A CN 202111433580 A CN202111433580 A CN 202111433580A CN 114147232 A CN114147232 A CN 114147232A
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- tundish
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- 229910052751 metal Inorganic materials 0.000 title claims abstract description 113
- 239000002184 metal Substances 0.000 title claims abstract description 113
- 239000000843 powder Substances 0.000 title claims abstract description 27
- 238000009689 gas atomisation Methods 0.000 title claims abstract description 18
- 238000010438 heat treatment Methods 0.000 claims abstract description 34
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910002804 graphite Inorganic materials 0.000 claims abstract description 32
- 239000010439 graphite Substances 0.000 claims abstract description 32
- 238000004519 manufacturing process Methods 0.000 claims abstract description 20
- 230000005674 electromagnetic induction Effects 0.000 claims description 20
- 239000000498 cooling water Substances 0.000 claims description 16
- 230000001960 triggered effect Effects 0.000 claims description 10
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 6
- 230000008018 melting Effects 0.000 claims description 6
- 229910002059 quaternary alloy Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 230000003647 oxidation Effects 0.000 claims description 3
- 238000007254 oxidation reaction Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- 229910052804 chromium Inorganic materials 0.000 claims description 2
- 239000011651 chromium Substances 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- 229910052715 tantalum Inorganic materials 0.000 claims description 2
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 2
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 2
- 229910052721 tungsten Inorganic materials 0.000 claims description 2
- 239000010937 tungsten Substances 0.000 claims description 2
- 230000005856 abnormality Effects 0.000 claims 1
- 230000002159 abnormal effect Effects 0.000 abstract description 7
- 238000000889 atomisation Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000012546 transfer Methods 0.000 description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 2
- 229910052582 BN Inorganic materials 0.000 description 2
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 description 2
- 238000003723 Smelting Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004663 powder metallurgy Methods 0.000 description 2
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 229910000816 inconels 718 Inorganic materials 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000001746 injection moulding Methods 0.000 description 1
- 238000011031 large-scale manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Images
Classifications
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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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/18—Status alarms
- G08B21/182—Level alarms, e.g. alarms responsive to variables exceeding a threshold
-
- 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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
- B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
- B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
- B22F2009/0888—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid casting construction of the melt process, apparatus, intermediate reservoir, e.g. tundish, devices for temperature control
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Furnace Details (AREA)
- Manufacture Of Metal Powder And Suspensions Thereof (AREA)
Abstract
The invention relates to an active alarm device of a tundish system for preparing metal powder by gas atomization, which comprises a tundish upper baffle, a tundish, a graphite sleeve, a heating assembly, a discharge spout, a metal fuse and an electric control system, wherein the tundish upper baffle is arranged on the tundish upper baffle; the upper baffle plate of the leaky bag is arranged at an opening above the leaky bag, the metal fuse is wound on the outer wall of the leaky nozzle and is arranged below the graphite sleeve, the metal fuse is connected with the electrical control system and is linked with the electrical control system, and the electrical control system generates different alarm levels and actively controls or adjusts the tundish system. Compared with the prior art, the invention adopts the metal fuse as the sensor in the tundish system, is associated with the control system and sets different alarm levels, thereby realizing active alarm and automatic control when abnormal production occurs, further actively improving the safety of operators and production equipment and reducing the risk of serious damage of key components.
Description
Technical Field
The invention belongs to the technical field of powder metallurgy, and particularly relates to an active alarm device of a tundish system for preparing metal powder through gas atomization.
Background
In recent years, the rapid development of powder metallurgy, injection molding and additive manufacturing industries has driven a great market demand for metal powders. On the premise, how to safely and efficiently prepare high-quality metal powder becomes a key premise of iterative upgrading in various technical fields.
The metal powder can be produced on a large scale through an atomization technology, when the metal powder is prepared, the smelting furnace melts metal into liquid, the liquid is poured into a tundish system when the metal powder reaches a certain superheat degree, molten metal forms a fine liquid column through a tundish and a discharge spout, and finally the molten metal is crushed and cooled by a high-pressure atomization medium to form metal powder, and in the process, the tundish system is used as key equipment for connecting smelting and atomization.
For example, chinese patent CN107096922A discloses a middle leaky-package system for vacuum tight coupling gas atomization powder making, which comprises an electromagnetic induction coil, an outer-sleeve heating body, an inner-sleeve middle package, an outer-sleeve flow guide nozzle heat transfer pipe, an inner-sleeve flow guide nozzle, and an inner wall heating core rod, wherein the inner-sleeve middle package is arranged inside the outer-sleeve heating body, the inner-sleeve flow guide nozzle is arranged inside the outer-sleeve flow guide nozzle heat transfer pipe, the outer-sleeve flow guide nozzle heat transfer pipe is connected with the outer-sleeve heating body, the inner-sleeve flow guide nozzle is communicated with the inner-sleeve middle package, the inner wall heating core rod is arranged inside the inner-sleeve middle package and the inner-sleeve flow guide nozzle, and the electromagnetic induction coil is arranged outside the outer-sleeve heating body.
However, the currently commonly used tundish system still faces many problems in terms of structural design and dealing with sudden production abnormal conditions: (1) when the production is abnormal, molten metal in the leaky ladle can splash, and heating parts in a tundish system, namely an electromagnetic induction coil/resistance wire, can be damaged; (2) after the tundish system is installed, the internal structure is closed and invisible, the molten metal can be caused to seep outwards due to overlarge assembly gap at the discharge spout, falling of refractory materials, cracking of the discharge ladle or the discharge spout, and thus parts of atomizing equipment can be unnecessarily damaged, the production cost is increased, and potential safety hazards are brought at the same time; (3) the heating assembly of the tundish system mainly comprises a resistance wire and an electromagnetic induction coil, if the resistance wire is adopted for heating, the tundish system only provides power supply, if the electromagnetic induction coil is adopted for heating, the tundish system also needs to be matched with circulating cooling water, but feedback cannot be formed when abnormal production occurs, and the tundish system basically has no active control or regulation capacity. Therefore, the active alarm device for the tundish system is developed, timely feedback is formed when the tundish system is abnormal in production, and the active alarm device has important significance for eliminating potential safety hazards, reducing production cost and improving production safety of metal powder.
Disclosure of Invention
Based on the problem that the tundish system for preparing metal powder by gas atomization in the prior art is poor in use safety, the invention provides an active alarm device of the tundish system for preparing metal powder by gas atomization.
The invention provides effective protection for heating parts (such as electromagnetic induction coils or resistance wires) in the tundish system through the optimized structural design, and realizes active alarm feedback and protection when the production is abnormal by using a mode of linkage of a metal fuse and a control system, thereby effectively avoiding potential safety hazards, avoiding damage of key parts, reducing the production cost and improving the safety of large-scale production of metal powder.
The purpose of the invention can be realized by the following technical scheme:
the invention provides an active alarm device of a tundish system for preparing metal powder by gas atomization, which comprises a tundish upper baffle, a tundish, a graphite sleeve, a heating assembly, a discharge spout, a metal fuse and an electric control system, wherein the tundish upper baffle is arranged on the tundish upper baffle; the leakage package is placed in the graphite sleeve, through holes are formed in the bottoms of the leakage package and the graphite sleeve and used for assembling the leakage nozzle, the leakage nozzle penetrates through the graphite sleeve and is exposed out for a certain distance, the heating assembly is arranged on the outer side of the graphite sleeve, the upper baffle of the leakage package is arranged at an opening above the leakage package, the metal fuse is wound on the outer wall of the leakage nozzle and is arranged below the graphite sleeve, the metal fuse is connected with an electrical control system and used as a sensor to trigger alarm and corresponding equipment correlation operation, when molten metal leaks at the positions of the leakage package and the leakage nozzle and is welded to form a passage, the metal fuse forming the passage is linked with the electrical control system, the electrical control system generates different alarm levels and actively controls or adjusts the middle package system.
In one embodiment of the invention, a plurality of metal fuses are arranged, the metal fuses are wound on the outer wall of the discharge spout in a parallel arrangement mode, the metal fuses do not form a passage with each other, and each metal fuse is respectively connected with an electrical control system.
In one embodiment of the invention, the number of the metal fuses is 2-8, preferably 3-5, the metal fuses are parallel to each other, the wire diameter of the metal fuses is 1-1.5 mm, the interval is 0.2-10 mm, preferably 0.2-3 mm, the alarm levels triggered by the metal fuses at the uppermost end and the metal fuses below the uppermost end forming a channel are sequentially increased from top to bottom, the alarm level triggered by the channel formed by the metal fuses at the uppermost end and the lowermost end is the highest, and the active alarm and the active control of a tundish system when production abnormity occurs are realized through an electrical control system.
In one embodiment of the invention, the electrical control system is connected with the heating assembly and used for controlling the start and stop of the heating assembly.
In one embodiment of the invention, the heating component is selected from an electromagnetic induction coil or a resistance wire. When resistance wires are used for heating, the tundish system only supplies power, and when electromagnetic induction coils are used for heating, the tundish system also needs to be matched with circulating cooling water.
In one embodiment of the invention, the outside of the graphite sleeve is further provided with circulating cooling water, and the electrical control system is connected with the circulating cooling water control part and is used for controlling the water flow and the pressure of the circulating cooling water.
And setting the number of alarm levels according to the set number of the metal fuses, wherein when the number of the metal fuses is 3-5, 2-4 different alarm levels are set.
For example, when the set number of the metal fuses is 4, the metal fuses are numbered and are numbered A, B, C, D from top to bottom in sequence, the metal fuses are respectively connected with an equipment control system and used as sensors for triggering alarm and corresponding equipment associated operation, a channel formed by the metal fuses arranged in parallel is set to different alarm levels such as A-B, A-C, A-D, A-B, A-C, A-D respectively correspond to the alarm levels I, II and III, and the alarm is sequentially raised, and the active alarm and automatic control when production abnormity occurs are realized through the setting of an electrical control system. For example, through the setting of the control system, when the alarm level I is triggered, an alarm mark appears in the control system, which indicates that molten metal leakage occurs at the position of the ladle and the spout, and the control system does not adopt any other operation because the molten metal leakage is less; when the alarm level II is triggered, the leakage of molten metal is more, the control system cuts off the power supply of the electromagnetic induction coil, the circulating cooling water continues to run according to the conventional process parameters, and production is prompted to be immediately suspended; when warning level III triggers, a large amount of seepage of surface molten metal, for the safety of key parts such as guarantee operating personnel and atomizer, control system will increase the flow of recirculated cooling water in the electromagnetic induction coil, when protecting electromagnetic induction coil, to the graphite cover in the tundish system, leak the part of package and cool off with higher speed, reduce the risk of the critical part's such as atomizer emergence serious damage.
In one embodiment of the present invention, the metal fuse material is a high melting point conductive material containing one or more elements of nickel, chromium, molybdenum, tungsten, and tantalum.
In one embodiment of the invention, the metal fuse is made of NiCrMoW quaternary alloy, has good oxidation resistance in a high-temperature environment, and has a melting point of 1300-1500 ℃.
In one embodiment of the present invention, the metal fuse is made of NiCrMoW quaternary alloy and has a melting point of 1420 ℃.
In an embodiment of the invention, the upper baffle of the leaky bag is annular and is provided with a middle hole, the size of the middle hole of the upper baffle of the leaky bag is close to that of the opening of the leaky bag, the upper baffle of the leaky bag is placed above the leaky bag, a bulge is arranged in the middle hole of the upper baffle of the leaky bag and can be clamped into the opening of the leaky bag, and the annular area of the upper baffle of the leaky bag can completely cover the heating assembly outside the graphite sleeve.
In one embodiment of the invention, the annular shape of the baffle on the drain ladle can cover 2.5-4 times of the sectional area of the opening of the drain ladle.
In one embodiment of the invention, the upper baffle plate of the drain ladle and the drain ladle are both made of alumina ceramic, and the drain nozzle is made of boron nitride.
In one embodiment of the invention, the tip passes through the graphite sleeve and is exposed for a distance of about two thirds of the total tip length.
Compared with the prior art, the invention has the advantages that:
(1) according to the invention, by optimizing the structural design of the tundish system and adopting the upper baffle of the tundish, which can be simply installed and disassembled, when molten metal in the tundish is reversely sprayed, the heating assembly in the tundish system can be effectively protected, and the safety of equipment and operators is further actively improved;
(2) the invention selects the high-melting-point metal fuse with high temperature oxidation resistance as the sensor in the tundish system, and when the leaky ladle and the metal fuse leaked from the discharge spout are welded to form a passage, the invention can provide timely feedback for the active alarm and the associated operation of the tundish system;
(3) the invention sets different alarm levels aiming at the passage formed by the fusion welding of the metal fuse and carries out the corresponding operation of the associated control system aiming at the different alarm levels, thereby realizing the active alarm and the automatic control when the production is abnormal and reducing the risk of serious damage of key components.
Drawings
Fig. 1 is a schematic structural diagram of an active alarm device of a tundish system in embodiment 1, wherein an electromagnetic induction coil is used as a heating component;
FIG. 2 is a schematic structural view of an active alarm device of a tundish system in embodiment 2, wherein a resistance wire is used as a heating component;
FIG. 3 is a partially enlarged view of an active alarm device of the tundish system in embodiment 1;
fig. 4 is a schematic diagram of the alarm level setting and control system associated operation of the active tundish alarm device in embodiment 1.
Wherein, 1 is a leakage bag upper baffle, 2 is a leakage bag, 3 is a graphite sleeve, 4 is a leakage nozzle, 5 is a metal fuse, 6 is an electromagnetic induction coil, 7 is circulating cooling water, and 8 is a resistance wire.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Example 1
Referring to fig. 1, 3 and 4, the present embodiment provides an active alarm device for a tundish system for preparing metal powder by gas atomization, which includes a tundish upper baffle 1, a tundish 2, a graphite sleeve 3, a heating assembly, a discharge spout 4, a metal fuse 5 and an electrical control system; the leakage ladle 2 is arranged in the graphite sleeve 3, the bottom parts of the leakage ladle 2 and the graphite sleeve 3 are provided with through holes, is used for assembling a discharge spout 4, the discharge spout 4 penetrates through the graphite sleeve 3 and is exposed for a certain distance, the heating component is arranged outside the graphite sleeve 3, the upper baffle plate 1 of the leaky ladle is arranged at the opening above the leaky ladle 2, the metal fuse 5 is wound on the outer wall of the discharge spout 4, and is arranged below the graphite sleeve 3, the metal fuse 5 is connected with an electrical control system, the metal fuse 5 is used as a sensor to trigger alarm and relevant equipment to operate, when molten metal leakage occurs at the position of the drain ladle 2 and the position of the discharge spout 4 and the metal fuse 5 is welded to form a passage, the metal fuse 5 forming the passage is linked with the electric control system, the electrical control system generates different alarm levels and actively controls or adjusts the tundish system.
In this embodiment, the heating component selects the electromagnetic induction coil 6, the outer side of the graphite sleeve 3 is further provided with circulating cooling water 7, and the electrical control system is connected with the electromagnetic induction coil 6 and used for controlling the start and stop of the electromagnetic induction coil 6. And the electric control system is connected with a control part of the circulating cooling water 7 and is used for controlling the water flow and the pressure of the circulating cooling water 7.
In this embodiment, the metal fuse 5 is made of NiCrMoW quaternary alloy, and has a melting point of 1420 ℃. The utility model discloses a leak package overhead gage, leak package overhead gage 1 is the annular shape, is provided with the mesopore, leak 1 mesopore size of package overhead gage and leak 2 opening sizes of package are close, leak package overhead gage 1 and place in leaking package 2 tops, leak package overhead gage 1 mesopore position and have the arch, can block into and leak inside package 2 openings, leak package overhead gage 1's annular region can cover the heating element in the 3 outsides of graphite sleeve completely. The upper baffle plate 1 and the drain ladle 2 are made of alumina ceramics, and the drain nozzle 4 is made of boron nitride. The discharge spout 4 penetrates through the graphite sleeve 3, and the exposed distance is about two thirds of the total length of the discharge spout 4.
In this embodiment, the metal fuses 5 are provided with 4 metal fuses 5, the 4 metal fuses 5 are wound on the outer wall of the discharge spout in a parallel arrangement mode, no passage is formed between the metal fuses 5, and each metal fuse 5 is connected with the electrical control system. In the rate of the accidents, the wire diameter of the metal fuse 5 is 1-1.5 mm, the interval is 3mm, the alarm level triggered by the passage formed by the metal fuse at the top end and the metal fuse below the metal fuse at the bottom end is sequentially promoted from top to bottom, the alarm level triggered by the passage formed by the metal fuse at the top end and the metal fuse at the bottom end is the highest, and the active alarm and the active control to the tundish system when the production abnormity occurs are realized through an electrical control system. The metal fuses are numbered and sequentially numbered from top to bottom as A, B, C, D, the metal fuses are respectively connected with an equipment control system and used as sensors to trigger alarm and corresponding equipment correlation operation, a channel formed by the metal fuses arranged in parallel is set to different alarm grades such as A-B, A-C, A-D, the A-B, A-C, A-D respectively corresponds to the alarm grades I, II and III, the alarm is sequentially improved, and the active alarm and automatic control when production abnormity occurs are realized through the setting of the electrical control system. For example, through the setting of the control system, when the alarm level I is triggered, an alarm mark appears in the control system, which indicates that molten metal leakage occurs at the position of the ladle and the spout, and the control system does not adopt any other operation because the molten metal leakage is less; when the alarm level II is triggered, the leakage of molten metal is more, the control system cuts off the power supply of the electromagnetic induction coil, the circulating cooling water continues to run according to the conventional process parameters, and production is prompted to be immediately suspended; when warning level III triggers, a large amount of seepage of surface molten metal, for the safety of key parts such as guarantee operating personnel and atomizer, control system will increase the flow of recirculated cooling water in the electromagnetic induction coil, when protecting electromagnetic induction coil, to the graphite cover in the tundish system, leak the part of package and cool off with higher speed, reduce the risk of the critical part's such as atomizer emergence serious damage.
The active alarm device of the tundish system is used for atomizing inert gas in vacuum induction melting of Inconel 718 nickel-based high-temperature alloy.
Example 2
Referring to fig. 2, unlike embodiment 1, in this embodiment, the heating component is selected from a resistance wire 8, and the electrical control system is connected to the resistance wire 8 and is used for controlling the start and stop of the resistance wire 8.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. The active alarm device of the tundish system for preparing metal powder by gas atomization is characterized by comprising a tundish upper baffle (1), a tundish (2), a graphite sleeve (3), a heating assembly, a discharge spout (4), a metal fuse (5) and an electrical control system; the leakage package (2) is placed in the graphite sleeve (3), the bottom of the leakage package (2) and the bottom of the graphite sleeve (3) are provided with through holes for assembling the leakage nozzle (4), the leakage nozzle (4) penetrates through the graphite sleeve (3) and is exposed for a certain distance, the heating assembly is arranged outside the graphite sleeve (3), the leakage package upper baffle (1) is arranged at an opening above the leakage package (2), the metal fuse (5) is wound on the outer wall of the leakage nozzle (4) and is arranged below the graphite sleeve (3), the metal fuse (5) is connected with an electrical control system, when the leakage package (2) and the leakage nozzle (4) leak metal melt, and the metal fuse (5) is welded to form a passage, the metal fuse (5) forming the passage is linked with the electrical control system, and the electrical control system generates different alarm levels, and actively control or regulate the tundish system.
2. The active alarming device of the tundish system for preparing metal powder through gas atomization according to claim 1, wherein a plurality of metal fuses (5) are arranged, a plurality of metal fuses (5) are wound on the outer wall of the discharge spout in a parallel arrangement mode, the metal fuses (5) do not form a passage with each other, and each metal fuse (5) is respectively connected with an electrical control system.
3. The active alarm device of the tundish system for preparing the metal powder through gas atomization according to claim 2, wherein the number of the metal fuses (5) is 2-8, preferably 3-5, the metal fuses (5) are parallel to each other, the wire diameter of the metal fuses (5) is 1-1.5 mm, the interval is 0.2-10 mm, preferably 0.2-3 mm, the alarm levels triggered by the metal fuses at the uppermost end and the metal fuses below the uppermost end form a passage are sequentially increased from top to bottom, the alarm level triggered by the passage formed by the metal fuses at the uppermost end and the lowermost end is the highest, and the active alarm and the active control of the tundish system when production abnormality occurs are realized through an electrical control system.
4. The active alarming device of the tundish system for preparing metal powder through gas atomization according to claim 1, wherein the electrical control system is connected with the heating assembly and used for controlling the start and stop of the heating assembly.
5. The active alarming device of the tundish system for preparing metal powder by gas atomization according to claim 1, wherein the heating component is an electromagnetic induction coil (6) or a resistance wire (8).
6. The active alarm device of the tundish system for preparing metal powder through gas atomization according to claim 1, wherein circulating cooling water (7) is further arranged on the outer side of the graphite sleeve (3), and the electrical control system is connected with a control part of the circulating cooling water (7) and used for controlling the water flow and pressure of the circulating cooling water (7).
7. The active alarm device of the tundish system for preparing metal powder by gas atomization according to claim 1, wherein the metal fuse (5) is made of a high-melting-point conductive material containing one or more elements of nickel, chromium, molybdenum, tungsten and tantalum;
preferably, the metal fuse (5) is made of NiCrMoW quaternary alloy, has good oxidation resistance in a high-temperature environment, and has a melting point of 1300-1500 ℃.
8. The active alarm device of the tundish system for preparing metal powder through gas atomization according to claim 1, wherein the upper baffle plate (1) of the tundish is annular and provided with a middle hole, the upper baffle plate (1) of the tundish is placed above the tundish (2), a protrusion is arranged at the middle hole of the upper baffle plate (1) of the tundish and can be clamped into the opening of the tundish (2), and the annular region of the upper baffle plate (1) of the tundish can completely cover the heating assembly outside the graphite sleeve (3).
9. The active alarming device of the tundish system for preparing metal powder through gas atomization according to claim 8, wherein the annular shape of the upper baffle plate (1) of the tundish can cover 2.5-4 times of the sectional area of the opening of the tundish (2).
10. The active warning device of a tundish system for atomizing and preparing metal powder according to claim 1, wherein the discharge spout (4) penetrates through the graphite sleeve (3) and is exposed to a distance of two thirds of the total length of the discharge spout (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111433580.XA CN114147232A (en) | 2021-11-29 | 2021-11-29 | Tundish system active alarm device for preparing metal powder through gas atomization |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111433580.XA CN114147232A (en) | 2021-11-29 | 2021-11-29 | Tundish system active alarm device for preparing metal powder through gas atomization |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114147232A true CN114147232A (en) | 2022-03-08 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115582550A (en) * | 2022-10-17 | 2023-01-10 | 深圳市深汕特别合作区万泽精密科技有限公司 | Tundish, bleed-out protection system of tundish and gas atomization powder making device |
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| CN1541787A (en) * | 2003-11-06 | 2004-11-03 | 东北大学 | Warning device for preventing middle package from bleeding-out |
| CN104555991A (en) * | 2013-10-22 | 2015-04-29 | 凯尔凯德新材料科技泰州有限公司 | Graphitization furnace with rapid cooling function |
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| CN115582550A (en) * | 2022-10-17 | 2023-01-10 | 深圳市深汕特别合作区万泽精密科技有限公司 | Tundish, bleed-out protection system of tundish and gas atomization powder making device |
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