CN213162980U - Ultrathin strip preparation device - Google Patents
Ultrathin strip preparation device Download PDFInfo
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- CN213162980U CN213162980U CN202021730102.6U CN202021730102U CN213162980U CN 213162980 U CN213162980 U CN 213162980U CN 202021730102 U CN202021730102 U CN 202021730102U CN 213162980 U CN213162980 U CN 213162980U
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Abstract
The utility model discloses an ultra-thin strip preparation facilities, include: the nozzle bag is used for containing alloy liquid, a water gap is formed in the bottom of the nozzle bag, and an opening and closing device for controlling the alloy liquid to flow out is arranged on the water gap; the nozzle cup is arranged at the bottom of the nozzle bag and is communicated with the nozzle bag through a water gap, a nozzle is arranged at the bottom of the nozzle cup, and a slit for spraying alloy liquid is formed in the nozzle; the cooling roller is fixed below the nozzle, and the slit of the nozzle is arranged in a manner of offsetting towards the opposite direction of the rotation of the cooling roller; the camera monitoring equipment is arranged on the side of the nozzle; a driving device for driving the nozzle pack to adjust the relative position and spacing between the nozzle and the cooling roller; and the central control console is used for automatically acquiring data measured by the camera monitoring equipment in real time and controlling the driving device and the cooling roller in real time. The prepared strip material of the utility model has the characteristics of sufficient toughness, small internal stress, thin thickness, high flatness and the like.
Description
Technical Field
The utility model relates to an alloy material prepares technical field, concretely relates to ultra-thin strip preparation facilities.
Background
The amorphous and nanocrystalline soft magnetic alloy has excellent soft magnetic properties and energy-saving characteristics such as higher saturation induction density, ultralow loss and high magnetic conductivity, and is widely applied to power and electronic devices such as energy-saving transformers, high-efficiency motors, high-end reactors, high-end transformers, high-end inductors, inverters, sensors, switching power supplies and the like in recent years. With the development of science and technology, the requirements of various power electronic devices on soft magnetic materials in the power electronic devices are higher and higher, and the requirements on the quality stability and the consistency of the size specifications such as thickness, width and the like of amorphous and nanocrystalline alloy strips are also higher.
The general production process of the amorphous and nanocrystalline alloy strip comprises the following steps: (1) smelting a master alloy by adopting a smelting furnace according to the chemical component proportion; (2) the mother alloy is heated and remelted by an induction melting furnace, poured into a nozzle bag of a strip making machine, and sprayed onto the surface of a rapidly rotating cooling roller through a nozzle on the nozzle bag under pressure to prepare a strip with the thickness of below 40 mu m.
In the above production process frame, related apparatuses for preparing amorphous, nanocrystalline alloy strip have been disclosed in the prior art, as described in patents CN204817960U, CN101445896B, CN203265561U, etc.; however, the current preparation device still has the following defects:
(1) when the strip is prepared, the alloy liquid is sprayed to the surface of the cooling roller through the nozzle, a weld puddle with a certain shape can be formed between the nozzle and the cooling roller, and the alloy liquid is in a turbulent flow state due to the fact that the nozzle is arranged right above the cooling roller and directly and vertically sprayed to the surface of the cooling roller rotating at a high speed, fluctuation is large, and the stable weld puddle cannot be formed, so that the flatness of the surface of the strip is affected, and the preparation difficulty of the ultrathin strip is increased.
(2) The cooling roller-nozzle distance directly determines the forming thickness of the strip, the strip with larger distance is thicker, the strip with smaller distance is thinner, however, in the process of preparing the strip, the distance between the roller nozzles cannot be regulated in real time, basically, the adjustment is carried out manually, the deviation of the thickness of the strip is easily caused, the continuity of strip manufacturing is influenced, and the production efficiency is greatly reduced. Especially, in the case of producing a thin strip of 20 μm or less, the nozzle-cooling roller spacing is already small to the extent that it is difficult to judge and adjust by the naked eye, it is difficult to further reduce the strip thickness by reducing the roller-nozzle spacing, and a strip-making failure of the cooling roller nozzle is often caused by a mistake in visual judgment.
Therefore, the method needs to be further improved aiming at the defects of the existing amorphous and nanocrystalline soft magnetic alloy strip preparation method.
SUMMERY OF THE UTILITY MODEL
To the not enough of prior art, the utility model provides an ultra-thin strip preparation facilities, the strip toughness of preparing through the device is sufficient, the internal stress is little, thickness is thin, the roughness is high.
An ultra-thin strip manufacturing apparatus comprising:
the nozzle bag is used for containing alloy liquid, a water gap is formed in the bottom of the nozzle bag, and an opening and closing device for controlling the alloy liquid to flow out is arranged on the water gap;
the nozzle cup is arranged at the bottom of the nozzle bag and is communicated with the nozzle bag through a water gap, a nozzle is arranged at the bottom of the nozzle cup, and a slit for spraying alloy liquid is formed in the nozzle;
the cooling roller is fixed below the nozzle, the slit of the nozzle is arranged in a manner of offsetting towards the opposite direction of the rotation of the cooling roller, and the connecting surface from the slit of the nozzle to the axis of the cooling roller and the vertical surface of the axis of the cooling roller form an included angle alpha, wherein the degree is 5-45 degrees;
the driving device is arranged outside the nozzle packet and used for driving the nozzle packet so as to adjust the relative position and the distance between the nozzle and the cooling roller;
the camera monitoring equipment is arranged on the side of the nozzle and is used for monitoring the space between the nozzle and the cooling roller and the relative position relation of the nozzle and the cooling roller, the expansion and deformation states of the nozzle and the cooling roller and the real-time state of the alloy liquid weld puddle in real time;
and the central control console is used for automatically acquiring data measured by the camera monitoring equipment in real time and controlling the driving device and the cooling roller in real time.
The utility model discloses a central console adjusts the interval of nozzle and chill roll, can realize that thickness is made at the strip under 20 mu m, and the slit through with the nozzle sets up to chill roll pivoted reverse skew simultaneously, increases strip package roller length when spouting the area, reaches better cooling effect for strip toughness can improve.
Preferably, the nozzle is a long strip made of refractory materials, the lower end face of the nozzle comprises a front lip lower end face and a rear lip lower end face, the front lip lower end face is positioned on two sides of the slit and close to the cooling roller face, the rear lip lower end face is far away from the cooling roller face, the rear lip lower end face is perpendicular to the side wall of the nozzle, an included angle beta is formed between the front lip lower end face and the rear lip lower end face, and the included angle beta is more than (180 degrees to alpha) and less. By adopting the nozzle, the lower end face of the front lip of the nozzle is in full contact with the molten alloy pool, compared with the conventional common strip spraying method adopting a flat lower end face at the highest position of the cooling roller, the contact area between the high-temperature nozzle and the upper part of the molten pool is greatly increased, the alloy part in a solidified and semi-solidified state in the pool is reduced, the flowing stability of the alloy liquid on the surface of the cooling roller is improved, and a strip with smaller thickness is prepared.
Preferably, the angle alpha formed by the connecting surface from the nozzle slit to the axis of the cooling roller and the vertical surface of the axis of the cooling roller is 10-20 degrees, so that the effect of wrapping the strip by the roller is optimal when the strip is sprayed.
Preferably, the device also comprises a thermocouple arranged on the side wall of the nozzle packet and used for measuring the actual temperature of the alloy liquid in real time and feeding the actual temperature back to the central control console.
Preferably, the device also comprises heating devices arranged on the side wall and the bottom of the nozzle packet, and the heating devices are automatically controlled by a central control console to realize that the actual temperature of the alloy liquid is consistent with the preset temperature. The alloy liquid is heated by the heating device controlled by the thermocouple measurement and feedback of the alloy liquid temperature and the feedback result, so that the alloy liquid is at a constant temperature, and the consistency of the overall performance of the prepared strip material is ensured.
Preferably, the heating device comprises a silicon carbide rod and a silicon carbide rod heater which are arranged in the side wall and the bottom of the nozzle bag.
Preferably, the camera monitoring device is a camera or an infrared imager. The equipment can monitor the space between the nozzle and the cooling roller and the relative position relationship thereof, the expansion and deformation states of the nozzle and the cooling roller and the real-time state of the alloy liquid weld puddle in real time and automatically feed back the real-time state to the central console, and the central console regulates and controls the driving device outside the nozzle package according to the information fed back by the camera monitoring equipment so as to maintain or adjust the space between the nozzle and the cooling roller and the relative position relationship thereof or adjust the state of the alloy liquid weld puddle. The central control console and the camera monitoring equipment can realize automatic control and adjustment of main process parameters in the strip manufacturing process, greatly reduce the influence of human factors in the production process, and improve the quality stability and the production efficiency of strips.
Preferably, the driving device is a motor symmetrically arranged at the outer side of the nozzle packet.
The utility model has the advantages that:
(1) the mode that the nozzles are arranged in a mode of offsetting towards the opposite direction of the rotation of the cooling roller is adopted, the length of the strip wrapping roller is increased when the strip is sprayed, and a better cooling effect is achieved, so that the toughness of the strip is improved, the crystallization possibility is low, and the soft magnetic performance is improved.
(2) By means of the innovative nozzle structure design, the lower end face of the front lip of the nozzle and the surface of the cooling roller are combined to present a certain-angle spray casting mode, so that alloy liquid is rapidly and slowly spread on the surface of the cooling roller, the accumulation amount of weld puddles below the lower end face of the front lip is reduced, a weld puddle condensation layer is thinned, the flowing stability of the alloy liquid on the surface of the cooling roller is improved, and prepared strips are thinner and smoother, and the internal stress is smaller.
(3) The central console and the camera monitoring equipment are utilized to realize the automatic control and adjustment of main process parameters in the strip manufacturing process, thereby greatly reducing the influence of human factors in the production process and improving the quality stability and the production efficiency of the strip.
Drawings
FIG. 1 is a schematic view of the overall structure of the belt of the present invention;
FIG. 2 is a schematic side view of a belt manufacturing apparatus according to the present invention;
fig. 3 is an enlarged schematic view of the structure of the nozzle during the tape manufacturing of the present invention.
As shown in the figure: 1. the cooling device comprises a central console, 2, a nozzle bag, 3, a nozzle cup, 4, a cooling roller, 5, a driving device, 6, a thermocouple, 7, a silicon carbide rod, 8, a silicon carbide rod heater, 9, a camera monitoring device, 31, a nozzle, 311, a slit, 312, a front lip lower end face, 313, a rear lip lower end face, an angle formed by a connecting face from alpha and the slit of the nozzle to the axis of the cooling roller and a vertical face of the axis of the cooling roller, and an angle formed by beta, the front lip lower end face and the rear lip lower end face.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1-3, an ultra-thin strip manufacturing apparatus, which uses a single-roll melt rapid quenching method to spray alloy liquid onto the surface of a cooling roll rotating at high speed through a nozzle to manufacture a strip, comprises a central console 1, a nozzle bag 2, a nozzle cup 3, a cooling roll 4 and a driving device 5, wherein the central console 1 is used for automatically controlling the driving device 5 and the cooling roll 4 in real time, a water gap is arranged at the bottom of the nozzle bag 2, and an opening and closing device for controlling the alloy liquid to flow out is arranged on the water gap; the nozzle cup 3 is positioned at the bottom of the nozzle bag 2 and is communicated with the nozzle bag 2 through a water gap, and the bottom of the nozzle cup 3 is provided with a nozzle 31.
The cooling roller 4 is fixed below the nozzle 31, the slit 311 is a narrow channel arranged along the length direction of the nozzle 31 and penetrates up and down, the length of the slit 311 is smaller than that of the nozzle 31, the alloy liquid can be just spread on the surface of the cooling roller 4 after being sprayed out from the slit 311, meanwhile, the slit 311 is arranged at a position deviated from the opposite direction of the rotation of the cooling roller 4 by an angle alpha, specifically, the slit 311 is arranged at the position deviated from the highest point of the surface of the cooling roller 4 to the left by alpha, more specifically, the connecting surface of the slit 311 to the axis of the cooling roller 4 forms an angle alpha with the vertical surface of the axis of the cooling roller 4, the angle alpha is 5-45 degrees, and.
The driving device 5 is a motor symmetrically disposed at both sides of the nozzle pack 2 for driving the nozzle pack 2 to adjust a distance between the nozzle 31 and the cooling roll 4, specifically, a vertical distance from the center of the end face slit 311 of the nozzle 31 to the surface of the cooling roll 4.
In this embodiment, the nozzle 31 is shaped like a rectangular parallelepiped, the lower end surface of the nozzle 31 includes a front lip lower end surface 312 close to the roll shaft and a rear lip lower end surface 313 far from the roll shaft on both sides of the slit 311, the rear lip lower end surface 313 is perpendicular to the side wall of the nozzle 31, and the front lip lower end surface 312 and the rear lip lower end surface 313 form an included angle β, where (180 ° - α) < β < 180 °, and β is 171 ° in this embodiment.
The ultrathin strip preparation device further comprises a thermocouple 6 and a heating device, the thermocouple 6 is arranged on the side wall of the nozzle bag 2, a probe of the thermocouple 6 penetrates through the side wall of the nozzle bag 2 to extend into the nozzle bag 2 and is used for measuring the actual temperature of the alloy liquid in real time and feeding back the actual temperature to the central control platform 1, the heating device comprises a silicon carbide rod 7 and a silicon carbide rod heater 8, the silicon carbide rod heater 8 is arranged on the side wall and the bottom of the nozzle bag 2 and is controlled by the central control platform 1, and the alloy liquid is heated according to the actual temperature of the alloy liquid fed back to the central control platform 1, so that the actual temperature of the alloy liquid is kept consistent with the preset temperature.
The ultrathin strip preparation device further comprises a camera monitoring device 9, wherein the camera monitoring device 9 is a camera or an infrared imager arranged on two sides of the nozzle 31 and is used for monitoring the distance between the nozzle 31 and the cooling roller 4 and the relative position relationship of the nozzle 31 and the cooling roller 4, the expansion and deformation states of the nozzle 31 and the cooling roller 4 and the real-time state of the alloy liquid weld puddle in real time and automatically feeding back the alloy liquid weld puddle to the central console 1, and the central console 1 regulates and controls the driving device 5 outside the nozzle pack 2 according to information fed back by the camera monitoring device 9 so as to keep or adjust the distance between the nozzle 31 and the cooling roller 4 and the relative position relationship of the nozzle 31 and the cooling roller 4 or adjust the state of the.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments or portions thereof without departing from the spirit and scope of the invention.
Claims (8)
1. An ultra-thin strip manufacturing apparatus, comprising:
the nozzle bag is used for containing alloy liquid, a water gap is formed in the bottom of the nozzle bag, and an opening and closing device for controlling the alloy liquid to flow out is arranged on the water gap;
the nozzle cup is arranged at the bottom of the nozzle bag and is communicated with the nozzle bag through a water gap, a nozzle is arranged at the bottom of the nozzle cup, and a slit for spraying alloy liquid is formed in the nozzle;
the cooling roller is fixed below the nozzle, the slit of the nozzle is arranged in a manner of offsetting towards the opposite direction of the rotation of the cooling roller, and the connecting surface from the slit of the nozzle to the axis of the cooling roller and the vertical surface of the axis of the cooling roller form an included angle alpha, wherein the degree is 5-45 degrees;
the driving device is arranged outside the nozzle packet and used for driving the nozzle packet so as to adjust the relative position and the distance between the nozzle and the cooling roller;
the camera monitoring equipment is arranged on the side of the nozzle and is used for monitoring the space between the nozzle and the cooling roller and the relative position relation of the nozzle and the cooling roller, the expansion and deformation states of the nozzle and the cooling roller and the real-time state of the alloy liquid weld puddle in real time;
and the central control console is used for automatically acquiring data measured by the camera monitoring equipment in real time and controlling the driving device and the cooling roller in real time.
2. The apparatus of claim 1, wherein the nozzle is a long strip made of a refractory material, and the lower end surface of the nozzle includes a front lip lower end surface located on both sides of the slit and close to the cooling roll surface and a rear lip lower end surface located away from the cooling roll surface, the rear lip lower end surface being perpendicular to the side wall of the nozzle, and an included angle β is formed between the front lip lower end surface and the rear lip lower end surface, wherein (180 ° - α) < β < 180 °.
3. The apparatus for manufacturing an ultra-thin strip as claimed in claim 1, wherein the angle α formed by the connecting surface of the slit of the nozzle to the axis of the cooling roll and the vertical surface of the axis of the cooling roll is 10 ° to 20 °.
4. The apparatus of claim 1, further comprising a thermocouple disposed at a sidewall of the nozzle pack for measuring an actual temperature of the alloy liquid in real time and feeding back the measured temperature to the central console.
5. The apparatus of claim 4, further comprising heating means disposed on the side wall and the bottom of the nozzle pack, and automatically controlled by the central console to make the actual temperature of the alloy liquid consistent with a preset temperature.
6. The apparatus of claim 5, wherein the heating means comprises silicon carbide rods and silicon carbide rod heaters disposed in the side walls and bottom of the nozzle pack.
7. The apparatus of claim 1, wherein the camera monitoring device is a camera or an infrared imager.
8. The apparatus of claim 1, wherein the driving means is a motor symmetrically disposed outside the nozzle pack.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021730102.6U CN213162980U (en) | 2020-08-18 | 2020-08-18 | Ultrathin strip preparation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021730102.6U CN213162980U (en) | 2020-08-18 | 2020-08-18 | Ultrathin strip preparation device |
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| Publication Number | Publication Date |
|---|---|
| CN213162980U true CN213162980U (en) | 2021-05-11 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021730102.6U Active CN213162980U (en) | 2020-08-18 | 2020-08-18 | Ultrathin strip preparation device |
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| CN (1) | CN213162980U (en) |
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- 2020-08-18 CN CN202021730102.6U patent/CN213162980U/en active Active
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