Abstract
1. Thermal-oxidation treatment and diamond grinding applied to low-cobalt (4–6% Co) tungsten hard alloys remove their defective surface layers, thereby increasing their transverse-rupture strength and impact strength by 20–30%. Because of the higher productivity achieved in it and its lower cost, however, the thermal-oxidation process must be regarded as superior to diamond grinding. 2. Use of subsequent vibratory treatment brings about a further improvement in the mechanical characteristics of alloys of this type (amounting to 40–80% compared with untreated specimens), which is a consequence of vibratory hardening by hard-alloy balls. 3. In cases where a large allowance is to be removed from a hard-alloy component, it is advantageous first to subject the latter to thermal oxidation treatment and then bring it to the required dimensions by vibratory treatment.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
