1.5 of the stainless steel plate to drill 1.2 holes, the drill has broken a lot of roots, what kind of material with a bit better? How much speed, how much feed?
First of all, drilling stainless steel must use high-performance drills, such as high cobalt, high vanadium or alumina bit material.
Because 1.2MM this is a small size drill, so do not give a lot of feed, slowly feed, cooling liquid should also be in place. By definition, the thickness of the 1.5MM is very good, drilling, if it is a general stainless steel, then more than 1000 holes, a drill on the good. Of course, this means that the processed workpiece has not been processed.
1.2MM drill bit processing stainless steel cutting dosage is recommended as follows:Cutting speed / (m/min) 15 feed f/ (mm/r) 0.05 drill bit helix angle / (degree) 25-35 drill point / (degree) 118-135 high cobalt high speed steel
When drilling a stainless steel material, it is better to add some vinegar to the drill so that it will be easy to drill. Stainless steel drilling, the speed can not be high, high, easy to drill bit. 1.2mm hole, the speed hit 1000 rpm almost. In addition, the drilling of stainless steel, it is very hard to drill, the drill is not fast, and timely grinding, do not force to drill down, it will easily break the drill.
