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How to choose carbide inserts and metal lathe inserts?
time：
2025-06-10 12:01
source：
Lizhou
In the field of machining, cemented carbide cutting tools and metal lathe blades are core tools for improving efficiency.
With their high wear resistance and high-temperature resistance, they can easily handle the cutting needs of materials such as steel, cast iron, and stainless steel.
However, for beginners, choosing the right blade can be a headache when faced with a wide variety of models and parameters. Don't worry, we will recommend practical models and analyze applicable scenarios in easy-to-understand language.
I. Cemented Carbide Cutting Tools: A Multi-Scenario Processing " Universal Key "
Cemented carbide blades are made of tungsten cobalt alloy by high-pressure sintering, which can maintain a sharp cutting edge and withstand intense friction. We recommend the following three high-cost-effective models according to the processing type:
1. Kennametal KCU25 (Turning blade)
Applicable machine tools : CNC lathes, ordinary lathes
Processing materials : Stainless steel, alloy steel
Advantages : The unique chip breaker design can effectively control the chip shape and avoid winding the tool, which is especially suitable for processing materials with long chips.
2. Sandvik GC4325 (Milling blade)
Applicable machine tools : Vertical machining center, gantry milling machine
Processing materials : Carbon steel, tool steel
Advantages : Coating technology improves blade life 30%，粗加工时单次进给量可达5mm，效率翻倍。
3. Mitsubishi VP15TF (Cut-off blade)
Applicable machine tools : Automatic lathe, Swiss-type automatic lathe
Processing materials : Titanium alloy, high-temperature alloy Our salaries are the same
Advantages : Ultra-thin 0.2mm Cutting edge reduces material waste, and the combination of anti-vibration tool holder can process aerospace precision parts.
II. Metal Lathe Blades: Designed for Turning
Metal turning has higher precision requirements for blades, and good Metal turning blades can directly determine the surface finish. The following three models are worth noting:
1. Iscar CNMG120404 (External cylindrical turning)
Applicable scenarios : Batch processing of automotive shaft parts
Geometric characteristics ： 80° Rhombus tip angle balances strength and flexibility, Ra1.6 Surface roughness can save grinding process.
2. Iscar 16ER11BSPT (Thread turning)
Special design : Full tooth profile ensures thread accuracy, processing 60° Metric thread with an error less than 0.01mm。
Measured data : Processing 45# Steel screws, single-edge life reaches 120 pieces, more than ordinary blades 40%。
3. Iscar TNMG-TSF (Fine turning blade)
Ultra-precision machining ： CVD Coating + Mirror cutting edge treatment, can achieve Ra0.8 Mirror effect, directly turning hydraulic valve core without polishing.
III. Common Questions and Answers
Q : Can the same blade process different materials?
A : Some general-purpose blades (such as TNMG331-MF3 ) can take into account steel and cast iron by adjusting cutting parameters, but professional blades (such as cast iron-specific K10 material) have better results.
Q : How to solve blade chipping?
A : First check if the clamping is loose, then confirm whether the feed rate is exceeded. Processing quenched steel ( HRC50 and above) must use CBN blades.
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