Inspection of Physical Properties-
All heat-treated casting batches are inspected for hardness requirements. Castings not complying with the specified hardness requirements are sent for heat treatment again. Periodically as per inspection plan the castings are inspected for physical properties i.e. tensile and elongation.
All pistons manufactured are machined on dedicated CNC & special Purpose Machines, which deliver high accuracy, consistency and repeatability. Close tolerances are maintained throughout via Automatic machining and Statistical Process Control.
Machining includes open bore, straight turning, drilling, semi-finished bore, oil hole drilling, grooving, groove drilling, top dish machining, cam turning, fine boring, circlip grooving, burnishing and deburring. Pistons are subject to In-Process inspection as per Quality plan and Necessary corrective and preventive actions taken on the basis of the findings.