CN114178519B - Tundish flow guide nozzle fixing method and device - Google Patents

Tundish flow guide nozzle fixing method and device Download PDF

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Publication number
CN114178519B
CN114178519B CN202111324931.3A CN202111324931A CN114178519B CN 114178519 B CN114178519 B CN 114178519B CN 202111324931 A CN202111324931 A CN 202111324931A CN 114178519 B CN114178519 B CN 114178519B
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Prior art keywords
tundish
flow guide
nozzle
coaxiality
guide nozzle
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CN114178519A (en
Inventor
于菁
潘李乐
吴学昊
杨金龙
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Shenzhen Wedge Aviation Technology Co ltd
Shenzhen Shenshan Special Cooperation Zone Wanze Precision Technology Co ltd
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Shenzhen Wedge Aviation Technology Co ltd
Shenzhen Shenshan Special Cooperation Zone Wanze Precision Technology Co ltd
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Publication of CN114178519A publication Critical patent/CN114178519A/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50—Pouring-nozzles
    • B22D41/56—Means for supporting, manipulating or changing a pouring-nozzle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50—Pouring-nozzles
    • B22D41/502—Connection arrangements; Sealing means therefor
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/25—Process efficiency

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Continuous Casting (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)

Abstract

The invention provides a method and a device for fixing a tundish flow guide nozzle, which comprise the following steps: fixing the tundish and adjusting the upper end face of the tundish to be in a horizontal state; testing the coaxiality of the upper end face of the tundish and the through hole; placing a flow guide nozzle in the groove of the tundish, and adjusting and fixing the position of the flow guide nozzle to enable the flow guide nozzle and the end surface of the tundish to be coaxial; and coating daub around the flow guide nozzle, and baking in a high-temperature furnace. The coaxiality of the upper end face of the middle package and the through hole can be detected, the guide nozzle is adjusted to replace the prior hand guide nozzle with the middle package coaxial fixing device in the installation process, so that the operation difficulty of personnel is reduced, the stability of the middle package is improved, and the production efficiency and the production safety of powder are improved.

Description

Tundish flow guide nozzle fixing method and device
Technical Field
The invention relates to the technical field of powder metallurgy, in particular to a tundish flow guide nozzle fixing method and device.
Background
In the field of powder metallurgy, particularly for aerospace, automotive and medical high-end products, atomization is the most common method for preparing spherical powder. Existing atomization devices are for example: the gas atomization equipment melts the mother alloy through induction heating, then pours into the tundish, the molten steel flows out through the flow guiding nozzle, is broken into small liquid drops under the impact of high-speed airflow in the spray disk, and is solidified into metal powder. During the installation of the tundish, for example: the verticality of the inner hole of the tundish can not meet the technical requirement, the diversion nozzle is inclined, and the diversion nozzle and the tundish are not coaxial. The problems cause uneven stress of the tundish, and the phenomena of cracks and steel leakage can be caused in the production process, thereby seriously influencing the production efficiency and the production safety. At present, the diversion nozzle is fixed by a manual righting method, the inclination condition of the diversion nozzle cannot be avoided, the coaxiality cannot be ensured, and the qualification rate of the fixed diversion nozzle is low.
Disclosure of Invention
The invention mainly aims to provide a tundish nozzle fixing method and a tundish nozzle fixing device so as to solve the problems in the prior art.
In order to achieve the above object, the present invention provides a tundish nozzle fixing method, comprising:
fixing the tundish and adjusting the upper end face of the tundish to be in a horizontal state;
testing the coaxiality of the upper end face of the tundish and the through hole;
placing a flow guide nozzle in the groove of the tundish, and adjusting and fixing the position of the flow guide nozzle to enable the flow guide nozzle and the end surface of the tundish to be coaxial;
and coating daub around the flow guide nozzle, and baking in a high-temperature furnace.
Optionally, the fixing the tundish and adjusting the upper end surface of the tundish to reach the horizontal state specifically includes: and placing the tundish on a coaxiality testing frame, fixing the tundish by using a circular adjustable clamp, measuring by using a leveling ruler, and adjusting the upper end surface of the tundish to be horizontal by using a bottom leveling device.
Optionally, the testing the coaxiality of the upper end face of the tundish and the through hole specifically includes: and opening the rotating bearing, testing the coaxiality of the upper end face of the tundish and the through hole by using a coaxiality testing jig, and when the measured value is greater than 0.5 degrees, if the tundish is unqualified, replacing the tundish.
Optionally, the adjusting and fixing the position of the flow guide nozzle makes the flow guide nozzle and the tundish end face coaxial specifically include:
sleeving a flow guide nozzle support on the flow guide nozzle, and fixing the position of the flow guide nozzle;
and testing the coaxiality of the flow guide nozzle by using a dial indicator, and adjusting the positions of the flow guide nozzle and the flow guide nozzle support to ensure that the flow guide nozzle is coaxial with the upper end face of the tundish.
Optionally, the method further comprises: and taking off the diversion nozzle support at the upper part after baking and cooling, and measuring the verticality of the diversion nozzle and the coaxiality of the tundish diversion nozzle through the coaxiality testing frame.
The invention also provides a tundish nozzle fixing device, which comprises: the coaxiality testing frame and the flow guide nozzle bracket; the tundish is placed on the coaxiality testing jig, and the coaxiality testing jig is used for fixing the tundish, adjusting the upper end face of the tundish to be in a horizontal state, and testing the coaxiality of the upper end face of the tundish and the through hole; the flow guide nozzle is placed in the groove of the tundish; the diversion nozzle support is sleeved on the diversion nozzle and used for fixing and adjusting the position of the diversion nozzle; the coaxiality testing frame is also used for testing the coaxiality of the flow guide nozzle and adjusting the positions of the flow guide nozzle and the flow guide nozzle support to enable the flow guide nozzle to be coaxial with the upper end face of the tundish.
Optionally, the coaxiality test frame comprises a round adjustable clamp, a bottom leveling device, an adjusting bolt, a rotating bearing, a base, a support steel frame and a dial indicator; the round adjustable clamp is used for fixing the tundish, and the bottom leveling device and the adjusting bolt are used for adjusting the tundish to be horizontal; and the rotating bearing is used for driving the device to rotate integrally, and the dial indicator is utilized to test whether the upper end face of the tundish and the through hole are coaxial.
Optionally, the snout support comprises: the device comprises a fixed nut, a steel plate, a support frame and a sleeve; the steel plate is connected with the support frame through threads, the upper end of the steel plate is fixed through the nut, the lower end of the support frame is connected with the sleeve through threads, and the sleeve can adjust the height to adapt to the diversion nozzles with different heights; the fixing nuts are arranged among the steel plates, and the size of each fixing nut can be adjusted to adapt to the flow guide nozzles with different diameters; the fixing nut, the steel plate, the support frame and the sleeve are integrally sleeved on the flow guide nozzle, and the position of the flow guide nozzle is fixed and adjusted.
Optionally, still include the daub that applies on around the water conservancy diversion mouth, water conservancy diversion mouth and the pouring basket after applying the daub are put into the high temperature furnace and are toasted, toast the water conservancy diversion mouth support of cooling back with upper portion and take off, through the axiality test jig measures the straightness that hangs down of water conservancy diversion mouth and the axiality of pouring basket water conservancy diversion mouth.
The invention has the beneficial effects that: whether package up end and inside through-hole are concentric in the middle of can realizing the inspection, the level degree of package up end in the middle of the adjustment to make water conservancy diversion mouth and middle package coaxial, adjust and inspect the straightness that hangs down of water conservancy diversion mouth, and because the nimble adjustability of water conservancy diversion mouth support fixation nut, sleeve and circular adjustable anchor clamps, even the size of middle package and water conservancy diversion mouth changes not influence fixing device's use to some extent. The time for holding the flow guide nozzle in a hand and the consumed labor cost are saved, and the overall qualification rate and the stability of the tundish after the flow guide nozzle is installed are greatly improved. Because the guiding nozzle is not completely vertical, the stress of the tundish is uneven, the molten steel can not smoothly flow due to the fact that the guiding nozzle of the tundish is not coaxial, defects or damages can be generated in the production process of the tundish due to the phenomena, and therefore the stable installation quality of the guiding nozzle of the tundish can greatly improve the production efficiency of powder and the production safety.
Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic flow chart of a method for fixing a tundish nozzle according to an embodiment of the present invention;
fig. 2 is an overall schematic view of a tundish nozzle fixing device according to an embodiment of the present invention;
FIG. 3 is a diagram of a tundish coaxiality test according to an embodiment of the present invention;
fig. 4 is a schematic view of a coaxiality test of the mounted flow nozzle according to the embodiment of the invention;
fig. 5 is a schematic diagram of a verticality test of a flow guide nozzle fixed by cement gum according to an embodiment of the present invention;
fig. 6 is a schematic view of a nozzle support according to an embodiment of the present invention;
fig. 7 is a schematic view of a circular adjustable clamp according to an embodiment of the present invention.
Description of the drawings:
the steel plate comprises a 1.15 dial indicator, 2 fixing nuts, 3 diversion nozzles, 4 nuts, 5 steel plates, 6 support frames, 7 sleeves, 8 tundish, 9 round adjustable clamps, 10 bottom leveling devices, 11 adjusting bolts, 12 rotating bearings, 13 bases, 14 support steel frames and 16 cement.
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
As shown in fig. 1, a method for fixing a tundish nozzle according to an embodiment of the present invention includes:
s101, fixing a tundish and adjusting the upper end face of the tundish to be in a horizontal state;
s102, testing the coaxiality of the upper end face of the tundish and the through hole;
s103, placing a flow guide nozzle in the groove of the tundish, and adjusting and fixing the position of the flow guide nozzle to enable the flow guide nozzle and the end face of the tundish to be coaxial;
s104, coating the periphery of the flow guide nozzle with daub, and placing the flow guide nozzle into a high-temperature furnace for baking.
Optionally, the fixing the tundish and adjusting the upper end surface of the tundish to reach the horizontal state specifically includes: and placing the tundish on a coaxiality testing frame, fixing the tundish by using a circular adjustable clamp, measuring by using a leveling ruler, and adjusting the upper end surface of the tundish to be horizontal by using a bottom leveling device.
Optionally, the testing the coaxiality of the upper end face of the tundish and the through hole specifically includes: and opening the rotating bearing, testing the coaxiality of the upper end face of the tundish and the through hole by using a coaxiality testing jig, and when the measured value is greater than 0.5 degrees, if the tundish is unqualified, replacing the tundish.
Optionally, the adjusting and fixing the position of the flow guide nozzle makes the flow guide nozzle and the tundish end face coaxial specifically include:
sleeving a flow guide nozzle support on the flow guide nozzle, and fixing the position of the flow guide nozzle;
and testing the coaxiality of the flow guide nozzle by using a dial indicator, and adjusting the positions of the flow guide nozzle and the flow guide nozzle support to ensure that the flow guide nozzle is coaxial with the upper end face of the tundish.
Optionally, the method further comprises: and taking off the diversion nozzle support at the upper part after baking and cooling, and measuring the verticality of the diversion nozzle and the coaxiality of the tundish diversion nozzle through the coaxiality testing frame.
The invention also provides a tundish nozzle fixing device, which comprises: the coaxiality testing frame and the flow guide nozzle bracket; the tundish is placed on the coaxiality testing jig, and the coaxiality testing jig is used for fixing the tundish, adjusting the upper end face of the tundish to be in a horizontal state, and testing the coaxiality of the upper end face of the tundish and the through hole; the flow guide nozzle is placed in the groove of the tundish; the diversion nozzle support is sleeved on the diversion nozzle and used for fixing and adjusting the position of the diversion nozzle; the coaxiality testing frame is also used for testing the coaxiality of the flow guide nozzle and adjusting the positions of the flow guide nozzle and the flow guide nozzle support to enable the flow guide nozzle to be coaxial with the upper end face of the tundish.
Optionally, the coaxiality test frame comprises a round adjustable clamp, a bottom leveling device, an adjusting bolt, a rotating bearing, a base, a support steel frame and a dial indicator; the round adjustable clamp is used for fixing the tundish, and the bottom leveling device and the adjusting bolt are used for adjusting the tundish to be horizontal; and the rotating bearing is used for driving the device to rotate integrally, and the dial indicator is utilized to test whether the upper end face of the tundish and the through hole are coaxial.
Optionally, the snout support comprises: the device comprises a fixed nut, a steel plate, a support frame and a sleeve; the steel plate is connected with the support frame through threads, the upper end of the steel plate is fixed through the nut, the lower end of the support frame is connected with the sleeve through threads, and the sleeve can adjust the height to adapt to the diversion nozzles with different heights; the fixing nuts are arranged among the steel plates, and the size of each fixing nut can be adjusted to adapt to the flow guide nozzles with different diameters; the fixing nut, the steel plate, the support frame and the sleeve are integrally sleeved on the flow guide nozzle, and the position of the flow guide nozzle is fixed and adjusted.
Optionally, still include the daub that applies on around the water conservancy diversion mouth, water conservancy diversion mouth and the pouring basket after applying the daub are put into the high temperature furnace and are toasted, toast the water conservancy diversion mouth support of cooling back with upper portion and take off, through the axiality test jig measures the straightness that hangs down of water conservancy diversion mouth and the axiality of pouring basket water conservancy diversion mouth.
As shown in fig. 2, an embodiment of the present invention provides a tundish nozzle fixing device, including a coaxiality testing jig and a nozzle holder, wherein:
the coaxiality test frame comprises a round adjustable clamp (9), a bottom leveling device (10), an adjusting bolt (11), a rotating bearing (12), a base (13), a support steel frame (14), a dial indicator (15) and a dial indicator (1), wherein the dial indicator can move up and down, rotate and be detached;
the round adjustable clamp (9) is used for fixing the tundish (8), the bottom leveling device (10) and the adjusting bolt (11) and is used for adjusting the tundish to be level;
the rotating bearing (12) can drive the device to integrally rotate, and the coaxiality test jig is used for testing whether the upper end face of the tundish (8) is coaxial with the through hole;
the flow guide nozzle (3) is arranged in the groove of the tundish (8);
the water conservancy diversion mouth support includes: the device comprises a fixed nut (2), a nut (4), a steel plate (5), a support frame (6) and a sleeve (7), wherein the steel plate (5) is in threaded connection with the support frame (6), the upper end of the steel plate is fixed by the nut (4), the lower end of the support frame (6) is in threaded connection with the sleeve (7), and the sleeve (7) can be adjusted in height to adapt to flow guiding nozzles with different heights; the fixing nuts (2) are arranged between the steel plates (5), and the size of each fixing nut (2) can be adjusted to adapt to the flow guide nozzles with different diameters; the fixing nut (2), the nut (4), the steel plate (5), the support frame (6) and the sleeve (7) are integrally sleeved on the flow guide nozzle (3) to fix the position of the flow guide nozzle;
the base (13) and the support steel frame (14) play a role in fixing and supporting the whole device.
Correspondingly, the method for fixing the tundish flow guide nozzle provided by the embodiment of the invention comprises the following steps:
placing a coaxiality test frame (comprising a round adjustable clamp (9), a rotating bearing (12), a base (13), a support steel frame (14), a dial indicator (15) and a dial indicator (1)) on a plane;
a round adjustable clamp (9) is used for fixing the tundish (8), a bottom leveling device (10) and an adjusting bolt (11) are used for measuring by using a leveling rod, and the upper end face of the tundish is adjusted to be in a horizontal state;
opening the rotating bearing (12), testing the coaxiality of the upper end face of the tundish (8) and the through hole by using a coaxiality testing frame, and when the measured value is greater than 0.5 degrees, the tundish is unqualified, and the tundish needs to be replaced;
placing the flow guide nozzle (3) in a groove of the tundish (8);
the steel plate (5) is connected with the support frame (6) through threads, the upper end of the steel plate is fixed through a nut (4), and the lower end of the support frame (6) is connected with the sleeve (7) through threads;
placing the fixing nuts (2) between the steel plates (5);
the fixing nut (2), the nut (4), the steel plate (5), the support frame (6) and the sleeve (7) are integrally sleeved on the flow guide nozzle (3) to fix the position of the flow guide nozzle;
testing the coaxiality of the flow guide nozzle (3) by using a dial indicator (1), and adjusting the positions of the flow guide nozzle (3) and a flow guide nozzle support to ensure that the flow guide nozzle (3) is coaxial with the end face of the tundish (8);
the device is fixed, and the daub is applied around the flow guide nozzle (3), and is put into a high-temperature furnace for baking, and is taken out after the daub is dehydrated, cooled and fixed, and the flow guide nozzle bracket (fixing nut (2), nut (4), steel plate (5), support frame (6) and sleeve (7)) on the upper part is removed, and the verticality of the flow guide nozzle and the coaxiality of the tundish flow guide nozzle are measured by a dial indicator (15), and the dial indicator is qualified when fluctuating within 0.5 degrees.
Example 1:
1) Placing the tundish on a coaxiality test frame, fixing the tundish by using a circular adjustable clamp, measuring by using a horizontal ruler, and adjusting the upper end surface of the tundish to be horizontal by using a bottom leveling device;
2) Opening the rotating bearing, testing whether the fluctuation value of the dial indicator of the upper end surface and the inner through hole is within 0.5 degrees, and if the fluctuation value exceeds 0.5 degrees, replacing the tundish, as shown in figure 3;
3) Placing a flow guide nozzle with the diameter of 8mm and the height of 20mm in a groove of a tundish, adjusting the diameter of a fixing nut to be matched with the flow guide nozzle, adjusting the height of a sleeve to be matched with the height of the flow guide nozzle, and placing a fixing device on the end surface of the tundish as shown in figure 4;
4) Adjusting the position of the flow guide nozzle to enable the flow guide nozzle to be coaxial with the end face of the tundish;
5) After adjustment, the flow guide nozzle is vertical, and the flow guide nozzle is coated with the daub and put into a high-temperature furnace for baking;
6) After baking and cooling, the nozzle holder at the upper part is taken off, as shown in fig. 5, the perpendicularity of the nozzle and the coaxiality of the tundish nozzle are measured by the coaxiality test jig, and the dial indicators are 0.2 and 0.1, which are within the acceptable range.
Example 2:
1) Placing the tundish on a coaxiality test frame, fixing the tundish by using a circular adjustable clamp, measuring by using a horizontal ruler, and adjusting the upper end surface of the tundish to be horizontal by using a bottom leveling device;
2) Opening the rotating bearing, testing whether the fluctuation value of the dial indicator of the upper end surface and the inner through hole is within 0.5 degrees, and if the fluctuation value exceeds 0.5 degrees, replacing the tundish, as shown in figure 3;
3) Placing a flow guide nozzle with the diameter of 10mm and the height of 30mm in a groove of a tundish, adjusting the diameter of a fixing nut to be matched with the flow guide nozzle, adjusting the height of a sleeve to be matched with the height of the flow guide nozzle, and placing a fixing device on the end surface of the tundish as shown in figure 4;
4) Adjusting the position of the flow guide nozzle to enable the flow guide nozzle to be coaxial with the end face of the tundish;
5) After adjustment, the flow guide nozzle is vertical, and the flow guide nozzle is coated with the daub and put into a high-temperature furnace for baking;
6) After baking and cooling, the nozzle holder at the upper part is taken off, as shown in fig. 5, the perpendicularity of the nozzle and the coaxiality of the tundish nozzle are measured by a coaxiality test jig, and the dial indicators are 0.1 and 0.1, which are within the acceptable range.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.

Claims (9)

1. A tundish nozzle fixing method is characterized by comprising the following steps:
fixing the tundish and adjusting the upper end face of the tundish to be in a horizontal state; the surface of the tundish, on which the groove is located, is an upper end surface;
testing the coaxiality of the upper end face of the tundish and the through hole;
placing a flow guide nozzle in the groove of the tundish, and adjusting and fixing the position of the flow guide nozzle to enable the flow guide nozzle and the end surface of the tundish to be coaxial;
and coating daub around the flow guide nozzle, and baking in a high-temperature furnace.
2. The method of claim 1, wherein said securing the tundish and adjusting the tundish upper end surface to a horizontal position specifically comprises: and placing the tundish on a coaxiality testing frame, fixing the tundish by using a circular adjustable clamp, measuring by using a leveling ruler, and adjusting the upper end surface of the tundish to be horizontal by using a bottom leveling device.
3. The method of claim 2, wherein said testing the coaxiality of the upper end face of the tundish and the through-hole comprises: and opening the rotating bearing, testing the coaxiality of the upper end face of the tundish and the through hole by using a coaxiality testing jig, and when the measured value is greater than 0.5 degrees, if the tundish is unqualified, replacing the tundish.
4. The method of claim 3, wherein said adjusting and fixing the position of the baffle nozzle such that the baffle nozzle and the tundish end face are coaxial comprises:
sleeving a flow guide nozzle support on the flow guide nozzle, and fixing the position of the flow guide nozzle;
and testing the coaxiality of the flow guide nozzle by using a dial indicator, and adjusting the positions of the flow guide nozzle and the flow guide nozzle support to ensure that the flow guide nozzle is coaxial with the upper end face of the tundish.
5. The method of claim 4, wherein the method further comprises: and taking off the diversion nozzle support at the upper part after baking and cooling, and measuring the verticality of the diversion nozzle and the coaxiality of the tundish diversion nozzle through the coaxiality testing frame.
6. The utility model provides a middle package water conservancy diversion mouth fixing device which characterized in that includes: the coaxiality testing frame and the flow guide nozzle bracket; the tundish is placed on the coaxiality testing jig, and the coaxiality testing jig is used for fixing the tundish, adjusting the upper end face of the tundish to be in a horizontal state, and testing the coaxiality of the upper end face of the tundish and the through hole; the flow guide nozzle is placed in the groove of the tundish; the diversion nozzle support is sleeved on the diversion nozzle and used for fixing and adjusting the position of the diversion nozzle; the coaxiality testing frame is also used for testing the coaxiality of the flow guide nozzle and adjusting the positions of the flow guide nozzle and the flow guide nozzle support to enable the flow guide nozzle to be coaxial with the upper end face of the tundish.
7. The device of claim 6, wherein the coaxiality test jig comprises a circular adjustable clamp, a bottom leveling device, an adjusting bolt, a rotating bearing, a base, a supporting steel frame and a dial indicator; the round adjustable clamp is used for fixing the tundish, and the bottom leveling device and the adjusting bolt are used for adjusting the tundish to be horizontal; and the rotating bearing is used for driving the device to rotate integrally, and the dial indicator is utilized to test whether the upper end face of the tundish and the through hole are coaxial.
8. The apparatus of claim 7, wherein the snout support comprises: the device comprises a fixed nut, a steel plate, a support frame and a sleeve; the steel plate is connected with the support frame through threads, the upper end of the steel plate is fixed through the nut, the lower end of the support frame is connected with the sleeve through threads, and the sleeve can adjust the height to adapt to the diversion nozzles with different heights; the fixing nuts are arranged among the steel plates, and the size of each fixing nut can be adjusted to adapt to the flow guide nozzles with different diameters; the fixing nut, the steel plate, the support frame and the sleeve are integrally sleeved on the flow guide nozzle, and the position of the flow guide nozzle is fixed and adjusted.
9. The apparatus of claim 8, further comprising daub applied around the baffle nozzle, wherein the baffle nozzle and the tundish after daub application are placed in a high temperature furnace for baking, the baffle nozzle bracket at the upper part is taken away after baking and cooling, and the verticality of the baffle nozzle and the coaxiality of the tundish baffle nozzle are measured by the coaxiality test jig.
CN202111324931.3A 2021-11-10 2021-11-10 Tundish flow guide nozzle fixing method and device Active CN114178519B (en)

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CN208811092U (en) * 2018-11-06 2019-05-03 山东汇嘉磁电科技有限公司 Inert gas atomizer fuel pulverizing plant
CN110280774B (en) * 2019-08-02 2021-02-02 上海大学 Metal powder preparation device
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