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 Case-Hardening |
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| Getting the hardening warpage under control |
Case-hardening consists in a
combination of hardening
techniques, which are primarily used for highly
stressed shafts, driving gears, guiding rails, and other
machine components. The basis for this procedure is carburization in a
carbon-emitting medium at temperatures of up to 950°
Centigrade. The Reese Hardening Plants use gas carburization. Since the application of this method is easily regulated, the carbon profile of the steel and thus the resulting hardening profile can be precisely realised. After the desired enrichment of the component surface with carbon has been achieved (by means of diffusion), the components are hardened and then tempered (drawn). |
The result: the
components manifest a high degree of solidity and surface
hardness (up to 800 HV), a high resistance to wear, and a
high core ductility. In
addition internal stress
within the surface layer
ensures a substantial increase in the endurance and
reversed fatigue strength. The usual case depths range from .5 to 2 mm; special technologies make case hardenings of up to 6mm possible. The engineers of Reese Hardening Plants stand ready to assist you in your choice of steel (in conformity with DIN 17210) and in your production planning. |
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| Round specimen. Material: 17CrNiMo6, ca. 5mm deep case-hardened | Case-Hardening of a big pinion shaft | ||||
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Web-Design & Translation: Zeres GmbH, Bochum (Germany) Copyright © 1997 Zeres GmbH, Bochum (Germany) |