Sprue fixing and guiding device for additive manufacturing gas atomization powder production
By designing a fixing and diversion device including an inner flow channel, a lower gate slot positioning strip and a gate funnel, the liquid leakage and production accident problems caused by the wrong joints between the gate and the diversion during the aerosolization powder making process of additive manufacturing are solved, and higher production stability and operating efficiency are achieved.
Patent Information
- Application Number
- CN202420936924.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-30
- Publication Date
- 2025-03-18
- Estimated Expiration
- 2034-04-30
AI Technical Summary
During the aerosol powder making process of additive manufacturing, misalignment is prone to occur at the connection between the gate and the diversion, resulting in leakage of metal liquid and increasing the risk of production accidents. At the same time, the impact of metal liquid on the gate will cause cracks and nozzles to be blocked, affecting the production rhythm.
A fixing and flow guide device including an inner flow guide groove, a lower gate slot positioning strip and a gate funnel is designed. Through the design of spiral inner flow guide groove and a gradient overlap, the gate is ensured to fix the position of the gate and the flow guide, reduce the risk of liquid leakage, and improve the operating efficiency through the splash-proof baffle and positioning strip.
It effectively reduces the position displacement and leakage of gate and diversion, improves the continuity and stability of production, reduces the operating time of personnel and the risk of scalding, and at the same time slows down the flow rate of metal liquid and reduces the risk of nozzle blockage.
Smart Images
Figure CN222626194U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of additive manufacturing, in particular to a gate fixing and flow guiding device for additive manufacturing gas atomization powder production. Background Art
[0002] In recent years, additive manufacturing technology has been gradually applied to various industries. Among them, vacuum induction gas atomization (VIGA) powder making technology has gradually become the mainstream technology for producing powder for additive manufacturing. The main principle of vacuum induction gas atomization powder making is to put the metal rod into a crucible wrapped with an electromagnetic induction coil, heat and melt the metal rod by electromagnetic induction under the protection of the atmosphere, and then disperse the metal liquid flow into small particles through the purge of high-speed inert air flow, and finally obtain the required alloy powder through the vibration classification system.
[0003] During the production process, whether the metal liquid can smoothly pass through the gate and the guide is one of the keys in the atomization process. If there is a misalignment at the connection between the gate and the guide, the metal liquid will flow out from the gap at the connection between the gate and the guide when pouring steel, which will cause the metal liquid to flow between the positive and negative poles of the induction coil, causing damage to the tundish at the least, and even puncture of the coil at the worst, resulting in a serious production accident; during the atomization process, the metal liquid will impact the same part of the gate for a long time, causing cracks in the gate, increasing the risk of leakage, and the metal liquid will also splash everywhere, increasing the risk of damage to the equipment in the furnace; the continuous and large-scale flow of metal liquid to the gate during the atomization process will also increase the risk of nozzle blockage, thereby affecting the rhythm and progress of production. Therefore, it is very important to ensure that the position of the gate and the guide is correctly fixed and the metal liquid is drained inside the gate to ensure the continuity and stability of the entire atomization system. Utility Model Content
[0004] The technical problem to be solved by the utility model is to provide a gate fixing and guide device for gas atomization powder production in additive manufacturing, which includes an inner guide groove, a lower gate slot positioning strip and a gate funnel, wherein the gate funnel is provided with a spiral inner guide groove, the upper part of the gate funnel is provided with an upper gate slot, the lower part of the gate funnel is provided with a lower gate slot, and the lower gate slot positioning strip is provided outside the lower gate slot. The upper gate slot is provided with a splash guard.
[0005] The ratio of the inner diameter R1 of the upper gate to the inner diameter R2 of the lower gate of the gate funnel is greater than or equal to 3 and less than or equal to 3.6.
[0006] Compared with the prior art, the utility model has the following advantages: the utility model is simple to process, the upper gate clamping groove can fix the splash-proof baffle, which can buffer the poured molten steel when pouring steel, and prevent the metal liquid from splashing out of the gate and causing damage to other components; when pouring steel, the lower gate clamping groove can make the gate and the guide position relatively fixed without displacement, thereby reducing the risk of steel leakage; the lower gate clamping groove positioning strip can quickly locate the position of the gate and the guide, reduce the operation time of personnel, increase work efficiency, and reduce the risk of scalding when replacing the guide during production intervals; when pouring steel, the guide groove in the gate can slow down the flow speed of the metal liquid and reduce the occurrence of blockage. BRIEF DESCRIPTION OF THE DRAWINGS
[0007] The specific implementation modes of the present utility model are further described in detail below in conjunction with the accompanying drawings.
[0008] Figure 1 It is a structural schematic diagram of the utility model.
[0009] In the figure: 1 - upper gate slot 2 - inner guide slot 3 - lower gate slot positioning strip 4 - lower gate slot 5 - gate funnel. DETAILED DESCRIPTION
[0010] like Figure 1 A gate fixing and guide device for additive manufacturing gas atomization powder production, comprising an inner guide groove 2, a lower gate slot positioning strip 3 and a gate funnel 5. The gate funnel 5 is provided with a spiral inner guide groove 2, an upper gate slot 1 is provided at the top of the gate funnel 5, a lower gate slot 4 is provided at the bottom of the gate funnel 5, and a lower gate slot positioning strip 3 is provided outside the lower gate slot 4. The upper gate slot 1 is provided with a splash guard. The ratio of the inner diameter R1 of the upper gate of the gate funnel 5 to the inner diameter R2 of the lower gate is greater than or equal to 3, and less than or equal to 3.6.
[0011] When in use, the gate funnel 5 is placed at the notch at the upper end of the guide; the lower gate slot 4 is a lower edge of the gate with a thickness reduced by 1 cm on the outer side and a height reduced by 4 cm in the longitudinal direction, forming a gradient inner overlap on the inner wall of the guide; the ratio of the inner diameter R1 of the upper gate of the gate funnel 5 to the inner diameter R2 of the lower gate is greater than or equal to 3, and less than or equal to 3.6. Since the top of the gate funnel 5 has a larger area in contact with the air than the bottom, the top cools faster and the top has a lower temperature than the bottom. The above arrangement can guide the high-temperature molten metal to flow quickly to the bottom of the gate funnel 5 and enter the tundish, avoiding gate rupture caused by a large temperature difference, and preventing the molten metal from splashing out of the gate and causing damage to other components.
[0012] 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 gate fixing and flow guiding device for additive manufacturing gas atomization powder production, characterized in that: It comprises an inner guide groove (2), a lower gate slot positioning strip (3) and a gate funnel (5); the gate funnel (5) is provided with a spiral inner guide groove (2); the upper part of the gate funnel (5) is provided with an upper gate slot (1); the lower part of the gate funnel (5) is provided with a lower gate slot (4); and the lower gate slot (4) is provided with a lower gate slot positioning strip (3) outside.
2. A gate fixing and flow guiding device for additive manufacturing gas atomization powder production according to claim 1, characterized in that: The upper gate groove (1) is provided with a splash guard.
3. The gate fixing and flow guiding device for additive manufacturing gas atomization powder production according to claim 1 is characterized by: The ratio of the inner diameter R1 of the upper gate to the inner diameter R2 of the lower gate of the gate funnel (5) is greater than or equal to 3 and less than or equal to 3.6.