Anti-cracking argon blowing collector nozzle for casting
By installing an annular steel hoop at the lower end of the argon blowing outlet and filling it with fire mud, the problem of water outlet explosion caused by impact in the vacuum ingot process is solved, and the cracking effect is prevented and cost is reduced.
Patent Information
- Application Number
- CN202421896672.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-08-12
- Estimated Expiration
- 2034-08-07
AI Technical Summary
In the vacuum ingot casting process, the argon blowing drain easily explodes due to the impact force during the dispersion of high-temperature steel, resulting in sputtering of the steel or the outlet falling off, resulting in contamination of the steel water. The existing technology method to increase strength is costly and has poor effect.
The argon blowing outlet is equipped with an annular steel hoop and fills the steel shell with fire mud to reduce the impact of the impact force on the water outlet wall and prevent cracking.
Effectively prevent the explosion and fall off of the argon blowing outlet, avoid contamination of molten steel, and reduce costs.
Smart Images
Figure CN223210484U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to smelting equipment, in particular to an anti-cracking argon blowing downhole for casting. Background Art
[0002] In the vacuum ingot casting process, molten steel flows through the sliding nozzle system from the ladle, and then enters the ingot mold in the vacuum chamber through the guide tube. To ensure that the molten steel can flow into the guide tube in an even and dispersed manner, we use the method of blowing argon gas into the air inlet to evenly disperse the molten steel flowing through the argon blowing nozzle. Therefore, the pressure of the argon gas is relatively high, causing the molten steel to impact the inner wall of the argon blowing nozzle from the inside of the hole in the radial direction during the dispersion process, forming an impact force from the inside to the outside. This impact force may cause the lower section of the argon blowing nozzle to burst under high temperature during use, and then cause the molten steel to splash to the outside of the guide tube, or directly cause the argon blowing nozzle to burst and fall off, allowing refractory materials to enter the casting and pollute the molten steel. In response to the above-mentioned problems of the existing technology, some manufacturers use high-temperature firing to increase its strength, and some manufacturers use zirconium rings embedded from top to bottom. Neither of them can solve this problem and also lead to a significant increase in cost. Summary of the Invention
[0003] A crack-proof argon-blown nozzle for casting has the following structure: an annular steel hoop 5 with a thickness of 1mm to 5mm and a width of 10mm to 40mm is installed at the lower end of the argon-blown nozzle 1, 0-60mm from the lower end. The annular steel hoop 5 is located within a steel shell 3. The space between the annular steel hoop 5 and the steel shell 3 is filled with fire clay 8 to prevent heat radiated from the guide tube from affecting the annular steel hoop 5. Due to the use of the annular steel hoop 5, the nozzle can effectively reduce the impact of impact force on the nozzle wall, eliminating the problem of nozzle wall cracking. BRIEF DESCRIPTION OF THE DRAWINGS
[0004] Figure 1 This is a schematic diagram of an anti-cracking argon-blown drain nozzle for casting, where 1 is the argon-blown drain nozzle blank, 2 is the argon-blown drain nozzle air ring, 3 is the argon-blown drain nozzle steel shell, 4 is the air inlet, 5 is the annular steel hoop, 6 is the air vent, 7 is the air chamber, and 8 is the fire clay. DETAILED DESCRIPTION
[0005] Example
[0006] A crack-proof argon-blown water outlet for casting has the following structure: a 3mm thick annular steel hoop 5 with a width of 30mm is installed 30mm from the lower end of the argon-blown water outlet 1, and the annular steel hoop 5 is inside the steel shell 3. The annular steel hoop 5 is filled with fire mud 8 between the steel shells 3.
[0007] Example
[0008] A crack-proof argon-blown water outlet for casting has the following structure: a 3mm thick annular steel hoop 5 with a width of 32mm is installed 35mm from the lower end of the argon-blown water outlet 1, and the annular steel hoop 5 is inside the steel shell 3, and the annular steel hoop 5 is filled with fire mud 8 between the steel shells 3.
[0009] Example
[0010] A crack-proof argon-blown water outlet for casting has the following structure: a 3mm thick annular steel hoop 5 with a width of 40mm is installed 30mm from the lower end of the argon-blown water outlet 1. The annular steel hoop 5 is inside a steel shell 3. The annular steel hoop 5 is filled with fire mud 8 between the steel shells 3 to prevent the heat radiated from the guide pipe from affecting the annular steel hoop 5.
Claims
1. A crack-proof argon-blown water inlet for casting, characterized in that: A 1mm-5mm thick, 10mm-40mm wide annular steel hoop (5) is installed at a distance of 0-60mm from the lower end of the argon blowing outlet (1) to the lower end. The annular steel hoop (5) is inside the steel shell (3). Fire mud (8) is filled between the annular steel hoop (5) and the steel shell (3).