The alphanumeric code HS7225 TDC4 details every core physical, dimensional, and metallurgical characteristic of the cutting tip. A complete breakdown of each segment is defined below:
1. HS7225 — The Metallurgical Substrate & Coating Grade
Definition: Represents a high-performance, premium PVD (Physical Vapor Deposition) multi-layered coated carbide grade HADSTO CNMG 120408 HS7225 Carbide Inserts High ....
Engineering Context: The substrate consists of a tough, micro-grain tungsten carbide structure blended with cobalt for optimal fracture toughness. The PVD coating layer (typically composed of TiAlN or similar advanced composite structures) provides excellent chemical stability and thermal barriers HADSTO CNMG 120408 HS7225 Carbide Inserts High .... This shields the base carbide from extreme temperatures, mitigates crater wear, prevents thermal micro-chipping, and stops built-up edge (BUE) formation when cutting sticky alloys HADSTO CNMG 120408 HS7225 Carbide Inserts High ....
2. TD — Insert Family & Geometry Profile
Definition: Designates a Double-Ended indexable insert optimized for deep radial plunging, profiling, and parting-off operations
Engineering Context: Having cutting edges on both ends doubles the tool's cost-efficiency per insert. It features a specialized prism-shaped top and bottom seating structure. When locked into a compatible tool block, this prevents the insert from twisting or walking sideways when subjected to immense side loads during multi-directional lateral turning.
3. C — Chipbreaker Configuration Style
Definition: Represents a C-Type high-feed chipbreaker pressed directly into the face of the cutting edge TaeguTec Cutting Tools - TDC (Double-ended) : 6001000.
Engineering Context: During grooving or parting, long stringy ribbons of metal can nest around the workpiece, damaging the surface finish or causing tool failure. The "C" geometry forces the incoming metal chip into a tight radius, breaking it cleanly into short, "6"-shaped manageable curls TaeguTec Cutting Tools - TDC (Double-ended) : 6001000. This profile features a reinforced cutting edge, making it robust enough for interrupted cuts, forged crusts, and medium-to-high feed rates TaeguTec Cutting Tools - TDC (Double-ended) : 6001000.
4. 4 — Nominal Cutting Width
Definition: Specifies an exact cutting edge width (W) of 4.0 mm.
Engineering Context: This dictates the precise width of the slot or groove generated in a single plunge. When using this insert for a complete part-off operation (cutting a finished piece off a solid bar), a 4.0 mm width means that 4.0 mm of material will be turned into chips per cut.
