For many medium-to-high speed printing facilities, the choice of a doctor blade often boils down to the "cost-performance" ratio. The KT-65 Hardness Material Coating Doctor Blade is specifically designed to address this need, boasting exceptional cost performance while supporting printing speeds up to 400 meters per minute. The core of the KT-65 lies in its specialized coating, which is formulated to be harder than standard steel but more economical than full ceramic options. It is classified as a "reinforced edge" blade, where the contact zone is chemically treated to enhance wear resistance.
One of the most significant industry consulting insights regarding the KT-65 is its ability to handle "hazing" or "scumming" issues. Because the coating maintains a sharp and consistent contact area for longer periods, it effectively removes the thin film of ink that standard blades might leave behind as they dull. Comparing the KT-65 to the ultra-speed DT-90, the main difference lies in the maximum speed threshold. While the DT-90 is the "marathon runner" for 500m/min, the KT-65 is the "versatile sprinter" for most commercial 350m/min lines.
Usage steps involve a thorough cleaning of the blade holder before installation, as any grit trapped behind the KT-65 can cause it to flex unevenly. Regarding raw material dynamics, the supply of high-purity alloy additives for coatings has seen price fluctuations, but the KT-65 remains a stable choice due to its efficient manufacturing process. For operators transitioning from carbon steel to KT-65, a slight adjustment in the "doctoring angle" is usually recommended to account for the increased stiffness of the coated edge. This ensures that the blade provides a clean wipe without excessive abrasive force on the printing plate.
