DrillMeister -Tube sheet – DMM head

IMPROVE TOOL LIFE and PRODUCTIVITY

This case involves drilling holes in a tube sheet, a component used in heat exchangers.
Machining was performed with a 28% higher productivity compared to the previous tool, ultimately achieving twice the tool life.
Because the material was low-carbon steel, it was challenging to control chip evacuation and optimize cutting efficiency, which also affected tool life.
The newly introduced DMM head, designed for stainless-steel applications, features a unique gash geometry that enables stable chip evacuation even low carbon steels.
In addition, it is coated with AH9130, which offers excellent wear resistance and provides superior cutting-edge durability.

DrillMeister
Industry Heat Exchanger
Component Tube sheet
Material ISO code P - SteelP - Steel
Work material Mild Steel
Machine(spindle type) Machining Center
Tool family Holemaking
Tool category Through holes
Product name DrillMeister
TSR No. 5437H
Tube sheet

Tool

Tungaloy Competitor
Body TID190F25-3 Head exchangable drill 3xD
Head DMM190 AH9130 Drill head
Grade AH9130 PVD

Tool life

Tungaloy Competitor
Tool life (m/insert) 70 35
Number of workpieces (pcs/insert) 1400 700

Cutting conditions

Tungaloy Competitor
Tool diameter DC (mm) 19 19
Hole tolerance grade IT10 IT10
Hole depth H (mm) 50 50
Cutting speed V/c (m/min) 100 80
Feed f (mm/rev) 0.26 0.25
Feed speed Vf (mm/min) 416 325
Coolant Internal coolant (emulsion) Internal coolant (emulsion)

Result

Tool life 2 times

Productivity1.28 times