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Cemented Carbide Milling Cutters Wear & Life

Cemented carbide milling form

The cemented carbide milling cutter wear basic law is similar with turning tools. Smaller thickness of high-speed steel cutter cutting, especially when conventional cemented carbide milling cutter on the workpiece surface, squeeze, sliding more serious cemented carbide milling cutter wear occurs mainly in the back, as shown in a) below. cemented carbide face milling cutter milling steel, high cutting speed, the chip along the front sliding velocity, so the back of wear at the same time, in front of smaller milling cutter wear, as shown in b) below.

Cemented Carbide Milling Wear
cemented carbide milling
Cemented carbide milling cutter wear - Milling flank wear, front and rear wear

Cemented carbide face milling high-speed intermittent cutting tooth subjected to repeated mechanical shock and thermal shock cracks cutter fatigue damage. The higher the speed of the milling the produce this cemented carbide milling cutter wear sooner and the more serious. Most cemented carbide face milling cutter breakage due to fatigue and loss of cutting ability. , Will have no cracks milling cutter wear milling cutter geometry angle selection unreasonable or improper use of the strength of the cutter, cutter under a lot of impact.

Measures to prevent cemented carbide milling wear

(l) A reasonable choice the cemented carbide milling cutter blade grades: high toughness, resistance to thermal cracking susceptibility is small and has good heat resistance and wear resistance of the blade material should be used. Example: milling steel, YS30, YS25 grade blade can be used; optional milling cast iron the YD15 grades blade prevent milling cutter wear.

(2) Rational selection of milling parameters: in a certain processing conditions, there is a does not produce the breakage of the safety of the working area, as shown. Select can guarantee the cemented carbide milling cutter working properly to prevent the milling cutter wear the Vc and ƒz safe operating area.

(3) The relative position between the workpiece and cemented carbide milling cutter a reasonable choice: choose the installation location of the face milling cutter wear plays an important role in reducing the face milling.

When the width of workpiece to be milled has been determined, the diameter of face cemented carbide milling cutter and the installation location of the options is shown in FIG.

Cemented Carbide Face Milling Safe Operating Area Choices of the Best Cutter Diameter and Installation Location.
cemented carbide milling wear cemented carbide milling wear
Select the safe operating area Vc and ƒz of guarantee milling cutter work properly. When the widths of the workpiece to be milled have been identified, face milling cutter diameter and installation location options.

Milling cutter life and milling speed

The milling cutter wear standard provisions in the back, high speed steel cylindrical milling cutter roughing steel VB = 0.6mm, precision milling VB = 0.25mm. Cemented carbide face milling cutter milling steel VB = 1 ~ 1. 2mm, and milling castings VB = 1.5-2mm. High-speed steel cylindrical milling cutter life T = 100 ~ 400min, cemented carbide face milling cutter life T = 80 to 600 min.

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