Coventry line
  COVENTRY TOOLS BITS CARBIDE BRAZED TURNING TOOLS
Co 10% SPEZIAL ASP-60 P-20 P-40 K-10 M-10
MATERIAL MANUFACTURING High speed steel 10% Cobalt alloy. First choice quality. High-speed steel cobalt alloy, Tungsten and Carbon High alloy ASP-60 powder metallurgical grade with a more even distribution of cobalt, tungsten and Carbide particles.. Premium carbide imported from Germany and under ISO.
APPLICATIONS Turning, grooving and parting off. General purpose cutting tools. High feed turning. Means cutting depths. High wear resistance cutting edge. Turning and parting off. Turning, grooving, threading. Generalmachining. Turning, grooving, high feed ordificult conditions. Turning, grooving, threading. Generalmachining. Turning, grooving, threading. Generalmachining.
MACHINING Tough materials Wood
Extrusion Shearing tools
Tough materials Wood
Extrusion Shearing tools
Carbon steel, stainless steel,aluminium alloys, heat resistant alloys. First choice grade for general turning steel. Steel machining under difficult conditions.  Aleaciones de cobre a alta temperatura.
Universal grade for cast iron,
aluminium, abrasive materials and copper alloys.
Turning stainless steels and wear resistants manganese steels.
RESISTANCE Allowed in difficult cutting
conditions.
High wear resistance and machining withhigh concentration of heat. Alta resistencia al desgaste.
Alta resistencia de la arista de corte.
High wear resistance.
High strength cutting edge.
High wear resistance. Allowed in difficult cutting
conditions.
High wear resistance. High wear resistance.
REGRINDING Regrinding easily with ceramic or CBN wheels. Regrinding easily with ceramic or CBN wheels. Regrinding easily with ceramic or CBN wheels. Silicon carbide Wheel, finish withdiamond wheel.
SPECIAL FEATURES Good results in wide materials
range.
Better wear resistance at
cutting edge.

Increased productivity by higher cutting conditions and increased wear resistance.
Optimal performance in machining processes
MATHEMATICAL DETERMINATION OF THE CUTTING SPECIFICATIONS FOR THREAD MILLING
Description Formula Definition
ONLY FOR MILLING n = Spindle rotation speed
vc = Cutting speed
d = Milling cutter diameter
D = Internal thread diameter
vf = Feed rate at contour
vfm = Feed rate at centre
Ueint= Programmed immersion feed rate
fz= Feed rate per tooth
z = Milling cutter cutting rate
Milling external contour Vfm  =  Vf  = · (D + d)   Vf = D · Vfm    
                           D                     (D+d)
Milling internal contour Vfm  =  Vf  = · (D - d)   Vf = D · Vfm      
                       D                     (D-d)
Straight immersion Ueint  = 0,25 · Vfm
Immerse in the circular arc Ueint  = Vfm
Rth Calculation - Fórmula Rth
Symbol Description Metric Formula
Rth Roughness depth mm Rth = D/2 D2 - ae2/4