Cogsdill Burnishing tools explained...
Roller Burnishing Defined
Roller burnishing is a surface finishing technique in which hardened, highly polished steel rollers are brought into pressure contact with a softer piece part. As the pressure generated through the rollers exceeds the yield point of the piece-part material, the surface is plastically deformed by cold flowing of sub-surface material. The result is a mirror-like finish and a tough, work-hardened surface with load-carrying characteristics that are superior to finishes obtained by abrasive metal-removal methods.
A roller burnished surface is smoother and more wear-resistant than an abraded surface of the same profilometer reading. Profilometers measure roughness height. Abrasive finishing processes remove metal by cutting or tearing it away, and while this usually lowers the roughness profile, it leaves sharp projections in the contact plane of the machined surface.
Roller burnishing displaces metal, rather than removing it. Material in microscopic “peaks” on the machined surface is caused to cold flow into the “valleys,” creating a plateau-like profile in which sharpness is reduced or eliminated in the contact plane. A burnished surface is therefore smoother than an abraded surface with the same roughness height measurement. The burnished surface will last longer under working conditions in contact with a mating part.
Видео Cogsdill Burnishing tools explained... канала Cogsdill
Roller burnishing is a surface finishing technique in which hardened, highly polished steel rollers are brought into pressure contact with a softer piece part. As the pressure generated through the rollers exceeds the yield point of the piece-part material, the surface is plastically deformed by cold flowing of sub-surface material. The result is a mirror-like finish and a tough, work-hardened surface with load-carrying characteristics that are superior to finishes obtained by abrasive metal-removal methods.
A roller burnished surface is smoother and more wear-resistant than an abraded surface of the same profilometer reading. Profilometers measure roughness height. Abrasive finishing processes remove metal by cutting or tearing it away, and while this usually lowers the roughness profile, it leaves sharp projections in the contact plane of the machined surface.
Roller burnishing displaces metal, rather than removing it. Material in microscopic “peaks” on the machined surface is caused to cold flow into the “valleys,” creating a plateau-like profile in which sharpness is reduced or eliminated in the contact plane. A burnished surface is therefore smoother than an abraded surface with the same roughness height measurement. The burnished surface will last longer under working conditions in contact with a mating part.
Видео Cogsdill Burnishing tools explained... канала Cogsdill
Показать
Комментарии отсутствуют
Информация о видео
Другие видео канала
Cogsdill Angular Milling ToolsCogsdill - Over 100 years of Innovative Tooling SolutionsCogsdill SR Burnishing tool (USA)Cogsdill Shefcut Spool valve bore reamingCogsdill Fully Automated ZX SystemCogsdill Angular Milling Tools (Splining)Cogsdill - 100 years of innovationCogsdill RDB1 (Diamond Burnishing Boring Bar) toolCogsdill Shefcut Crank-bore machiningCogsdill Micro-Roller Burnishing Tools and Micro Diamond ToolsCogsdill Hydraulically operated 'Flip-out' ToolCogsdill - Manufacturing precision tooling for over 100 years!Cogsdill and Doosan Fully AutomatedMicro deburring tools - at Cogsdill, the smallest just got smallerDeburring tools - Cogsdill and MTDCNC InterviewThe Stuart Cogsdill JourneyCogsdill and Doosan - Fully AutomatedCogsdill Roller Burnishing toolslide conversionCogsdill - "Face Off" - Facing Head compilationCogsdill ZX300 Facing Head high speed Boring to H7Cogsdill ZX420 Threading and Boring on a Doosan DBC130