Coated Carbide Drills (3*D)

Coated Carbide Drills (3*D)

I.                 Advantages:

1. Higher Centering ability;

2. Stable precision size;

3. Better inner hole surface;

4. Suitable for drilling structure steel, alloy steel, and stainless steel etc.

II.               Manufacturing features:

1.Size standard: Subject to DIN6537;                                                                                                                                  

2. Chisel edge adjustment: China;                                                                                                                                      

3.Main edge point angle:140°;                                                                                                                                        

4. Shape of flute: Designed specially, easy for chip remove;                                                                                               

5. Tolerance of cutter diameter: m7;                                                                                                                                    

6.Segment standard: Subject to DIN6535HA h6;                                                                                                                          

7. Coated layer: Structure: Multi layer; Main ingredients: Si based; Color: Copper; HV:3400; Coefficient of Friction with steel: ˂0.4; Working temperature: 1100°; Thickness: 1.5um-3um

III.      Models: