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What are the characteristics of tungsten steel angle knives
Tungsten steel angle cutter (also known as hard alloy angle cutter) is a cutting tool made of tungsten steel (hard alloy) material, mainly used for machining grooves, slopes, bevels or formed surfaces of various angles. Its core characteristics stem from the high hardness, wear resistance, and targeted design of tool structures of tungsten steel materials. The following is a specific analysis:Sources：www.hafc.net.cn | PublishDate：2025.05.20
1、 Material performance characteristics
1. Higher hardness and wear resistance
Hardness: Tungsten steel (hard alloy) can reach a hardness of HRC85-93 (exceeding the HRC60-65 of high-speed steel), close to diamond hardness, and can easily cut high hardness materials such as quenched steel and stainless steel.
Wear resistance: Suitable for long-term processing of high melting point and high wear resistant workpieces (such as alloy steel and cast iron), the tool life is 5-10 times longer than that of high-speed steel tools.
2. High heat resistance and red hardness
It can maintain cutting performance at high temperatures of 800-1000 ℃, is not easily softened by high temperatures, and is suitable for high-speed cutting or continuous machining scenarios (such as high load operations of CNC machine tools).
3. Impact resistance and toughness
Although brittle compared to high-speed steel, some tungsten steel angle cutters can balance hardness and toughness by optimizing cobalt content (such as increasing the proportion of cobalt binder) and grain refinement processes, making them suitable for intermittent cutting under moderate loads.
2、 Structural design features
1. Multi angle precision forming of cutting edges
Angle range: Common angles include 30 °, 45 °, 60 °, 90 °, 120 °, etc. The cutting edge is precision ground or ground, and the angle tolerance can be controlled within ± 5 ′ - ± 15 ′ (with high angle accuracy).
Blade form:
Single angle knife: The single-sided cutting edge has a specific angle and is used to machine a single inclined surface (such as milling one side of a V-shaped groove).
Double angle knife: The two sides of the blade are symmetrical (such as a 90 ° V-shaped knife), and can process grooves with symmetrical angles at once (such as the dovetail groove of a gearbox).
2. Diversified tool shapes
Integral structure: The blade body and cutting edge are integrally formed, with strong rigidity, suitable for small workpieces or precision machining (such as clock parts, electronic components).
Inlaid structure: The blade edge is embedded with tungsten steel blades, and the blade body is made of high-speed steel or carbon steel, reducing costs and suitable for large workpieces or batch processing (such as mold manufacturing).
3. Chip removal and cooling design
Spiral groove or straight groove design:
Spiral groove angle knives (such as spiral tooth V-shaped knives) can guide chip discharge, reduce chip accumulation, and are suitable for processing plastic materials (such as aluminum and copper).
The straight groove cutter has a simple structure and is suitable for processing right angle grooves in brittle materials such as cast iron and brass.
Internal cooling hole design: Some cutting tools have built-in cooling channels that can directly deliver cutting fluid to the cutting edge, improving heat dissipation efficiency and extending tool life.
3、 Processing performance characteristics
1. High precision and surface quality
The roughness of the cutting edge can reach Ra0.2-0.8 μ m, and the processed workpiece has high angular accuracy and a smooth surface, which can reduce the need for subsequent polishing processes (such as bevel machining of aerospace parts).
2. Efficient cutting capability
The cutting speed can reach 100-300m/min (high-speed steel cutting tools are only 20-50m/min), and the feed rate is 0.05-0.3mm/r, suitable for large-scale production or automated machining lines.
3. Multi functional applicability
Can be used for various machining methods such as milling, boring, and reaming:
Milling angle grooves: such as machining V-shaped grooves and dovetail grooves on the surface of workpieces.
Boring groove: Processing welding grooves (such as 45 ° grooves) before pipeline welding.
Articulated formed holes: Processing angled countersunk or tapered holes (such as countersunk holes for bolt connections).
4、 Applicable scenarios and industries
1. Precision machining
Aerospace: Processing the angle connection surfaces of engine blade tenons and wing structural components.
Mold manufacturing: Processing inclined sliders, parting surface angles, or cavity grooves for injection molds and stamping molds.
Clocks and instruments: Processing micro gears, angular tooth surfaces or precision grooves for escape wheels.
2. Processing of metal components
Automotive industry: Processing chamfers for transmission gears and angle holes for differential housings.
Hydraulic and pneumatic components: Processing inclined grooves (such as O-ring sealing grooves) or pipe joint grooves for valve bodies.
3. Processing of special materials
High temperature alloys: such as nickel based alloys and titanium alloys for angle cutting (ordinary cutting tools are prone to wear, while tungsten steel cutting tools are more durable).
Hard materials: such as secondary processing of quenched steel (HRC50-60), directly milling angles without annealing.
