FIELD: machine building.
SUBSTANCE: group of inventions relates to machine building. Hand-operated tool with a working member has a braking device for the working member, which comprises a brake band surrounding a brake drum. Brake band and the brake drum form a friction pair that interacts during braking. Material of the first friction pair element is austenitic steel, duplex steel, super duplex steel, nickel-base alloy or cobalt-based alloy. First element of the friction pair has a main body and a boundary layer, wherein the hardness of the boundary layer is from about 150 to about 600 % of the hardness of the main body. Carbide content in the boundary layer is less than about 0.5 wt %.
EFFECT: increase in the braking characteristics and an increase in the service life of the device are achieved.
12 cl, 5 dwg, 3 tbl
| Title |
Year |
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