Silicon Carbide Impregnation - BORE TREATMENT

The Laycarb® process impregnates silicon carbide particles into the surface of the complete cylinder bore. The Laycarb® process, used in heavy duty diesel engines, gives improved bore wear resistance and virtually eliminates bore polish which can be a serious problem in highly rated engines. The Laycarb® process removes a minimal amount of material in the bore so fully finished bores can be treated. Generally, there is no need to change the piston or ring materials, however Laystall can provide technical advice on this if required. An application of the process is in extending bore life, hence maintaining emission levels when using high EGR where abrasive wear can be a major problem.

In order to provide many of the benefits of Laycarb® in terms of wear and scuff resistance but at substantially reduced unit cost, Laystall has developed a new process capable of treating the bore surface in a highly localised manner. Using this new process, substantially less consumables are used and a higher degree of controllability of the process is obtained. As much less waste is produced during the process, substantially less post treatment cleaning is required, and in the case of block treatment little or no masking is required. Treatment schemes can consist of through bore or ring reversal zones in a band. The width and position of the band can be closely controlled and consistently repeated for series production. In common with the Laycarb® process, cylinder liners or engine blocks may be treated.