A preparation method of high manganese steel doped with nanocrystalline corundum hard point disperse phase
A technology of crystalline corundum and high manganese steel, which is applied in the field of high manganese steel preparation, can solve the problems of increased dependence and limited performance improvement, and achieve the effects of overcoming instability, improving performance, and uniform and stable system
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment 1
[0022] A preparation method of high manganese steel doped with nanocrystalline corundum hard point disperse phase, comprising the following steps:
[0023] Step 1, potassium hydroxide solution and Al 2 (SO 4 ) 3 18H 2 The O solution was mixed until the Ph of the mixed solution was 7. After stirring at room temperature, it was transferred to an autoclave with a temperature of 105°C. After reacting for 10 hours, a solid-phase product was obtained, and the solid-phase product was subjected to suction filtration and rinsing. Circulate three times to obtain a solid-liquid mixture of nanocrystalline boehmite for subsequent use;
[0024] Step 2: Place the nanocrystalline boehmite solid-liquid mixture in the mother liquor of the Bayer process, heat it in a constant temperature water bath at 100°C for 5 hours, cool it down to room temperature naturally, and then filter the crystallization product through three cycles of suction filtration and rinsing, and then dry it. After ball mi...
Embodiment 2
[0029] Step 1. Pre-calcine the nanocrystalline boehmite at 500°C for 30 minutes, and then rapidly cool it to room temperature at a cooling rate of 30°C / min to obtain the primary nano-product; then place the primary nano-product at 1100°C for 2 hours, and then Rapid cooling to room temperature at a cooling rate of 45°C / min to prepare nanocrystalline corundum for later use;
[0030]Step 2, according to weight percentage, weigh Mn14.0%, C1.5%, Si1.0%, S0.02%, P0.05%, Cr1.5%, Ti2.5%, nanocrystalline corundum 12.5% and Fe66.93%, evacuate the high-frequency vacuum melting furnace until the pressure in the furnace is 0.05Pa, fill it with argon until the pressure in the furnace reaches 0.05MPa, add Si, C, S, P and 48.93% Fe in the above ratio , bake the material below 100°C for 15 minutes, then melt it below 1000°C for 10 minutes, then add Ti, Mn, Cr and 18% Fe in the form of Ti-Fe, Mn-Fe and Cr-Fe master alloys respectively, and then at 1200 Melting at a temperature of ℃ until all...
Embodiment 3
[0034] Step 1, potassium hydroxide solution and Al 2 (SO 4 ) 3 18H 2 The O solution was mixed until the Ph of the mixed solution was 10. After stirring at room temperature, it was transferred to an autoclave with a temperature of 160 ° C. After reacting for 5 hours, a solid-phase product was obtained, and the solid-phase product was subjected to suction filtration and rinsing. Circulate four times to obtain a solid-liquid mixture of nanocrystalline boehmite for subsequent use;
[0035] Step 2: Place the nanocrystalline boehmite solid-liquid mixture in the mother liquor of the Bayer process, heat it in a constant temperature water bath at 100°C for 1 hour, and cool it down to room temperature naturally. Ball mill after drying, and ultrasonically disperse the ground powder in deionized water for 1 hour, rest for 24 hours, and dry to obtain nanocrystalline boehmite with a size of 10-40 nm, which is ready for use;
[0036] Step 3. Pre-burn the nanocrystalline boehmite prepared...
PUM
| Property | Measurement | Unit |
|---|---|---|
| particle size | aaaaa | aaaaa |
| size | aaaaa | aaaaa |
| size | aaaaa | aaaaa |
Abstract
Description
Claims
Application Information
Login to View More