FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy and can be used in making hysteresis motor rotors from magnetically hard powder alloys. Powdered isotropic magnetic-hard material of iron-chrome-cobalt system contains: 22.5 wt% chrome, 15 wt% of cobalt, 1 wt% silicon, 2–4 wt% molybdenum or 1.5–2 wt% molybdenum and 1.5–2 wt% of tungsten, the rest – iron. Compression is performed in closed steel mold at 600 MPa, sintered at 1,350 °C in vacuum 10-2 Pa for 2 hours. After sintering, quenching and stepwise aging at temperature 620 °C, 580 °C, 560 °C, 540 °C, 520 °C with holding for 15–45 minutes at each temperature and cooling in water after each exposure.
EFFECT: high magnetic hysteresis characteristics of magnetically hard alloys and shorter duration of heat treatment.
2 cl, 3 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PRODUCING POWDERED MAGNETICALLY HARD ALLOY 30H20K2M2V OF IRON-CHROME-COBALT SYSTEM | 2015 |
|
RU2607074C1 |
| MANUFACTURING METHOD OF SINTERED HARD-MAGNETIC ALLOYS BASED ON IRON-CHROME-COBALT SYSTEM | 2013 |
|
RU2534473C1 |
| METHOD FOR HEAT TREATMENT OF POWDERED MAGNETIC HARD ALLOY Fe-30Cr-16Co-0.5Sm | 2022 |
|
RU2790847C1 |
| PRECIPITATION HARDENING MAGNETICALLY HARD ALLOY | 2009 |
|
RU2405059C1 |
| PRODUCTION OF IRON-CHROMIUM-COBALT-SYSTEM-BASED MAGNETICALLY HARD ALLOY POWDERS | 2013 |
|
RU2533068C1 |
| DISPERSION-HARDENING MAGNETICALLY HARD ALLOY | 2005 |
|
RU2303644C1 |
| METHOD OF HEAT TREATMENT OF MAGNETICALLY HARD ALLOYS OF IRON-CHROME-COBALT SYSTEM WITH COBALT CONTENT 8 WT % | 2014 |
|
RU2557852C1 |
| HEAT TREATMENT METHOD OF HARD-MAGNETIC ALLOYS BASED ON IRON-CHROME-COBALT SYSTEM | 2012 |
|
RU2511136C2 |
| MAGNETICALLY HARD ALLOY | 0 |
|
SU998570A1 |
| HEAT TREATMENT METHOD OF DEFORMED HARD-MAGNETIC ALLOYS BASED ON IRON-CHROME-COBALT SYSTEM | 2012 |
|
RU2495140C1 |
