| 摘要 |
FIELD: metallurgy. ^ SUBSTANCE: nickel powder mixed with expanding agent is pressed at temperature of 500-550C, pressure of 300-350 MPa during 30-40 minutes. Heating to pressing temperature is performed at speed of 810/min to 200C, and then at speed of 7080/min to 500-550C. Compact is removed from press mould and cooled; after that compact is heated with the oven of up to 870880C and exposed for 30-40 minutes. Sintered workpiece is cooled first during 10-15 minutes at the oven temperature of 300-350C, and then in the air up to room temperature. ^ EFFECT: increasing material porosity and high characteristics of permeability and strength. ^ 2 cl, 2 dwg, 1 tbl, 1 ex |
