Tundish and flow guide pipe fixing device for vacuum gas atomization powder making

Abstract

A tundish and flow guide pipe fixing device for vacuum gas atomization powder making comprises a base, a stand column, a tundish transverse limiting rod and a flow guide pipe transverse limiting rod, the stand column is fixed to the center of the base, the tundish transverse limiting rod is fixed to the center line of the stand column, and the flow guide pipe transverse limiting rod is connected with the tundish transverse limiting rod through threads; the inner diameter of the tundish down-flow opening is the same as the outer diameter of the tundish transverse limiting rod; the inner diameter of the flow guide pipe down-flow opening is the same as that of the flow guide pipe transverse limiting rod; a horizontal adjusting knob and a base supporting block are arranged at the lower part of the base; by means of the simple fixing device structure, it can be ensured that the coaxiality of the tundish and the flow guide pipe is consistent, compared with fixing of the flow guide pipe by hand, the installation accuracy is improved, compared with the prior art, the operation procedure is simplified, accurate installation of the flow guide pipe is completed, and the installation efficiency is improved. And moreover, the time cost and the instrument and equipment investment caused by complex procedures are saved, and the production efficiency is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum air atomization powder making, in particular to a tundish and guide tube fixing device for vacuum air atomization powder making. Background Art

[0002] Vacuum gas atomization is the main method for preparing spherical metal powder for 3D printing. The basic process is: directly add the master alloy rod into the melting crucible, melt the master alloy into molten steel through induction heating, pour it into the tundish after reaching the temperature, and the molten steel flows to the nozzle through the guide tube under the tundish. Under the action of high-speed airflow, the molten steel breaks into tiny metal droplets and spheroidizes, cools and solidifies into spherical metal powder. In the entire preparation process, whether the tundish is installed in a standard or not plays a vital role in the atomization results, efficiency and safety. The guide tube is tilted, and the guide tube is not coaxial with the tundish, which may lead to uneven distribution of molten steel during the production process, poor consistency of target powder, and more seriously, the guide tube breaks and leaks steel. At present, enterprises often use manual straightening methods to fix the guide tube, and use experience to judge whether the coaxiality is qualified, but the rework rate is high.

[0003] Regarding the method for fixing the guide tube of the tundish, Patent 202111324931.3 proposes a method and device for fixing the guide nozzle of the tundish. First, the tundish is fixed on the device, and the upper end face of the tundish is adjusted to a horizontal state. Then, the coaxiality of the upper end face of the tundish and the through hole is tested, and then the guide nozzle is placed in the groove of the tundish, and the position of the guide nozzle is adjusted and fixed so that the guide nozzle and the end face of the tundish are coaxial. Finally, glue is applied around the guide nozzle and it is placed in a high-temperature furnace for baking. The above method and device ensure the coaxiality of the guide tube and the tundish to a certain extent, and improve the qualified rate of the guide tube installation. However, this fixing method has complex procedures, is time-consuming, requires high operating precision, reduces labor efficiency, and involves many related instruments and equipment, which increases production costs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a device for fixing a tundish and a guide tube for vacuum gas atomization powder making, which comprises a base, a column, a tundish transverse limiting rod and a guide tube transverse limiting rod, the column is fixed at the center position of the base, the tundish transverse limiting rod is fixed on the center line of the column, and the guide tube transverse limiting rod is connected to the tundish transverse limiting rod by threads.

[0005] The inner diameter of the downflow port of the tundish is the same as the outer diameter of the transverse limiting rod of the tundish, and the inner diameter of the downflow port of the guide tube is the same as the transverse limiting rod of the guide tube.

[0006] A level adjustment knob and a base support block are arranged at the lower part of the base, and a level is arranged at the upper part of the base.

[0007] Compared with the prior art, the utility model has the following advantages: the utility model can ensure the coaxiality of the middle package and the guide tube through a simple fixing device structure, improves the installation accuracy compared with the hand-held guide tube fixation, simplifies the operation procedure compared with the existing patented technology, not only completes the accurate installation of the guide tube, but also saves the time cost and instrument equipment investment brought by complex working procedures, and effectively improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] The specific implementation modes of the present utility model are further described in detail below in conjunction with the accompanying drawings.

[0009] Figure 1 It is a structural schematic diagram of the utility model.

[0010] Figure 2 It is a schematic diagram of the connection between the transverse limiting rod of the guide tube and the transverse limiting rod of the tundish of the utility model.

[0011] Figure 3 This is a cross-sectional view of the tundish.

[0012] Figure 4 This is a cross-sectional view of the flow guide tube.

[0013] Figure 5 It is a schematic diagram of the structure of an embodiment of the utility model.

[0014] Figure 6 It is a cross-sectional view of an embodiment of the present utility model.

[0015] In the figure: 1—base 1-1—horizontal adjustment knob 1-2—base support block 1-3—level 2—column 3—transverse limit rod of tundish 4—transverse limit rod of guide tube 5—tundish 6—refractory clay 7—guide tube. DETAILED DESCRIPTION

[0016] like Figure 1 and Figure 2A vacuum gas atomization powder making tundish and guide tube fixing device, comprising a base 1, a column 2, a tundish transverse limiting rod 3 and a guide tube transverse limiting rod 4, the base 1 is preferably made of ordinary carbon steel with a thickness of 10-16 mm, the column 2 is fixed at the center of the base 1 to play a role of fixed support, the column 2 is preferably made of 20-40 mm stainless steel round steel or steel pipe, the height of the column 2 is H51-10-H51-40 mm, the tundish transverse limiting rod 3 is fixed on the center line of the column 2 to ensure consistent coaxiality, the material is preferably stainless steel, and its diameter is consistent with the inner diameter of the lower flow outlet of the tundish 5 The diameter is the same as the inner diameter of the lower outlet of the guide tube 7, and the height is H7+10~H7+40mm. It is connected to the transverse limit rod 3 of the tundish through threads, so that guide tubes with different inner diameters can be matched with transverse limit rods of guide tubes with different inner diameters to ensure the coaxiality of the guide tube and the tundish; the column 2 is fixed at the center position of the base 1, the transverse limit rod 3 of the tundish is fixed on the center line of the column 2, and the transverse limit rod 4 of the guide tube is connected to the transverse limit rod 3 of the tundish through threads.

[0017] The base 1 is provided with a level adjustment knob 1-1 and a base support block 1-2 at the bottom, and a level gauge 1-3 is provided at the top of the base 1. The base 1 can be leveled by the level adjustment knob 1-1 at the bottom of the base.

[0018] like Figure 3-Figure 6 When installing the guide tube, the operator first places the vacuum gas atomization powder making tundish and the guide tube fixing device on the fixed platform, adjusts the level 1-3 by adjusting the horizontal adjustment knob 1-1 to level the base 1, and sets the tundish 5 on the device with the lower flow port facing upward, so that the inner wall of the lower flow port of the tundish 5 fits tightly with the tundish transverse limit rod 3. According to the inner diameter of the guide tube, the guide tube transverse limit rod 4 of the corresponding diameter is selected and threadedly connected with the tundish transverse limit rod 3, and then the guide tube 7 is set in the groove of the tundish 5 with the lower flow port facing upward, ensuring that the inner wall of the lower flow port of the guide tube 7 fits tightly with the guide tube transverse limit rod 4, and refractory cement 6 is applied to the joint of the tundish 5 and the guide tube 7, and then baked with a handheld industrial-grade hot air gun. The tundish guide tube can be taken out as a whole after it is completely cured.

[0019] The above are preferred implementation modes of the present invention. Technicians in the field to which the present invention belongs can also change and modify the above implementation modes. Therefore, the present invention is not limited to the above specific implementation modes. Any obvious improvements, substitutions or modifications made by technicians in this field on the basis of the present invention belong to the protection scope of the present invention.

Claims

1. A device for fixing a tundish and a draft tube for vacuum gas atomization powder making, characterized in that: It comprises a base (1), a column (2), a tundish transverse limiting rod (3) and a guide tube transverse limiting rod (4), wherein the column (2) is fixed at the center position of the base (1), the tundish transverse limiting rod (3) is fixed on the center line of the column (2), and the guide tube transverse limiting rod (4) is connected to the tundish transverse limiting rod (3) via threads.

2. The device for fixing a tundish and a draft tube for vacuum gas atomization powder making according to claim 1, characterized in that: The inner diameter of the downflow opening of the tundish (5) is the same as the outer diameter of the tundish transverse limiting rod (3), and the inner diameter of the downflow opening of the guide tube (7) is the same as the transverse limiting rod (4) of the guide tube.

3. The device for fixing a tundish and a draft tube for vacuum gas atomization powder making according to claim 1, characterized in that: The base (1) is provided with a level adjustment knob (1-1) and a base support block (1-2) at the lower part, and a level (1-3) is provided at the upper part of the base (1).

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