The base serves as the saw blade's 'backbone', with its properties directly determining the blade's performance, service life and safety. Though not directly involved in cutting like the diamond cutting head, it forms the core structural support for the entire saw blade.
1. The core function of the base
Support and fixation: Provides a secure attachment base for the diamond cutting head, ensuring it remains firmly in place during high-speed rotation and under significant impact.
Transmission of cutting force: Effectively conveys the equipment's power and torque to the cutting point via the central flange connected to the main spindle.
Heat dissipation and vibration damping: During the cutting process, absorb and disperse the substantial heat and vibrations generated by friction, preventing the saw blade from warping or chattering due to overheating.
Ensuring cutting precision: A straight, stable, and rigid base is crucial for achieving a flat cutting surface with high perpendicularity.
Adapting to working conditions: Through specialized design features (such as incorporating stress relief grooves or altering material composition), the tool adapts to diverse cutting materials and environments, thereby minimizing abnormal damage.
2. Base material
The selection of substrate material is of paramount importance, requiring high strength, high toughness, excellent fatigue resistance, and moderate hardness. Currently, the mainstream material for diamond saw blade base on the market is alloy tool steel, with commonly used grades including 65Mn, 50Mn2V, and 75Cr1.
65Mn (manganese steel) is the most commonly used material, offering excellent strength, toughness and fatigue resistance at a favourable cost-performance ratio. It is widely employed in small to medium-sized saw blades for cutting marble, granite, concrete and similar materials.
50Mn2V / 75Cr1 represents a higher-performance alloy steel. Through the addition of elements such as chromium (Cr) and vanadium (V), it exhibits superior strength, toughness, and resistance to tempering softening. It is commonly employed in large-scale, ultra-thin, or high-specification saw blades, such as those for large granite frame saws and high-precision ceramic tile cutting discs.
