Patent ID: 9624993
Date: 2017-04-18
CPC Classifications: B27B,F16D

Claim:
1. A hand-held work implement comprising a tool and a braking device for the tool, wherein the braking device comprises a brake band, which wraps around a brake drum, wherein the brake band and the brake drum form a first part and a second part undergoing friction which move relative to one another during the braking operation, wherein the first part undergoing friction is an austenitic steel, a duplex steel, super duplex steel, a nickel-base alloy or a cobalt-base alloy, wherein the first part undergoing friction has a base body and a marginal layer, wherein the base body and the marginal layer comprise the same base material, wherein the marginal layer comprises diffused carbon or nitrogen embedded in a matrix of the base material such that the hardness of the marginal layer is approximately 150% to approximately 600% of the hardness of the base body, and wherein a carbide proportion in the marginal layer is less than approximately 0.5% by weight.