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In aluminum cutting, the use of tungsten carbide (hard alloy) at the cutting edge has become mainstream due to its beauty, efficiency, and safety from the perspective of the cutting surface. ▶️ Basic Elements of Structure The saw blade mainly consists of the following components: ✅ Saw Base (Blade Body): A steel disc that serves as the core part responsible for rotation and support during cutting. ✅ Carbide Tip (Cutting Edge): Cutting edges made of hard alloy attached around the saw body, designed with angles and shapes suited to the material. ✅ Center Hole (Inner Diameter): A hole for mounting on the machine spindle. ✅ Slits (Cuts): Features designed to absorb vibration and suppress thermal expansion. ▶️ Tip Material | Why is "Carbide" Used? Aluminum is a soft material that easily generates frictional heat. Therefore, the material of the cutting edge requires the following properties: ✅ High Hardness (Resistant to Wear) ✅ Heat Resistance (Resistant to Deformation and Damage from Heat) ✅ Chemical Stability (Resistant to Welding) The tungsten carbide-based "carbide tip" meets these requirements. It excels in wear resistance and lifespan, and can also be used for materials other than aluminum, such as brass, copper, and plastic.

In cutting aluminum materials, selecting the appropriate blade type based on the target material (extruded shapes, sheets, thick plates, etc.) is directly linked to ensuring quality and safety. Here, we introduce representative blade types for aluminum saws. ▶️ For aluminum extrusions: Alternating (Inclined) Blade (Staggered Tooth) Features ✅ A blade type with flat cutting edges arranged alternately (inclined) to the left and right. ✅ Mainly intended for extruded materials such as aluminum sashes and frames. Benefits ✅ Sharp cutting performance, ideal for thin-walled materials. ✅ Reduces burr formation during cutting, resulting in a good finish on the cross-section. ▶️ For aluminum sheets: High-Low Alternating Blade (Triple Chip) Features ✅ A special blade type with high "trapezoidal teeth" and low "flat teeth" arranged alternately. ✅ Commonly referred to as "Triple Chip," widely used for cutting medium to thick plates. Benefits ✅ Cutting load is distributed, reducing the load on each tooth. ✅ Long lifespan and stable cutting performance. ✅ Excellent flat finish on the cross-section. ✅ Cuts chips into three parts, facilitating chip removal. Usage Examples ✅ Ideal for applications requiring high cross-section quality and precision, such as cutting heat sink bases or aluminum plates.

The "pitch" of a chip saw refers to the spacing between the blades; if there are more blades, the pitch is finer, and if there are fewer blades, the pitch is coarser. In aluminum cutting, this "number of blades" has a significant impact on cutting precision, speed, and the occurrence of burrs. ▶️Basic Principles for Selecting the Number of Blades ✅ It is ideal for 2 to 3 blades to be in contact with the material simultaneously at all times. ✅ The thinner the material, the finer the pitch (i.e., more teeth) is required. ✅ For thicker or harder materials, a coarser pitch (i.e., fewer teeth) provides more stability.

▶️Introduction In aluminum cutting operations, the "rotational speed (rpm)" and "peripheral speed (Vc)" of the cutting tool are important parameters that influence cutting quality, tool life, and safety. By properly setting the rotational speed and peripheral speed, the following effects can be expected: ✅ Improvement in the quality of the cut surface ✅ Extension of tool life ✅ Reduction of motor and machine load ▶️What is rotational speed (N)? ✅ Definition: A value that represents how many times the cutting blade rotates in one minute (unit: rpm) ✅ It is adjusted in conjunction with motor rotation and inverter settings. ▶️What is peripheral speed (Vc)? ✅ Definition: The distance the cutting edge of the blade moves in one minute (m/min). (Unit: m/min or m/s) ✅ It is the speed of the cutting edge in contact with the material and directly affects the finish of the cut surface.

In cutting machines equipped with automatic feeding devices, it is essential to accurately understand and appropriately set the feed amount (Feed) and the feed per tooth (fz). ▶️ What is feed speed (Vf)? It is a value that indicates how fast the material is fed in relation to the rotation of the blade. ✅ The unit is usually mm/min (millimeters per minute). ✅ Even with manual operation, it unconsciously affects the actual working speed. ▶️ What is feed per tooth (fz)? fz is a value that represents the thickness cut by a single blade. ✅ Calculation formula for fz (Note: For alternating blade types, two blades are considered as one blade) fz (mm/tooth) = Vf (mm/min) ÷ (Z ÷ 2 × N) - Vf: Feed speed (mm/min) - Z: Number of blades (for triple chip, Z ÷ 2) - N: Rotational speed (rpm) ▶️ Recommended fz guidelines by material Material | Recommended fz | Notes Pure aluminum/soft materials | 0.02–0.10 | Focus on sharpness. Slightly faster feed is acceptable. General aluminum alloys | 0.02–0.07 | Focus on balance. Good finishing as well. Thick plates/hard materials | 0.02–0.05 | Feed should be cautious to prevent friction and welding.

▶️ Aluminum sash and extruded materials (such as A6063) - Characteristics: Thin-walled, hollow cross-section / Relatively soft extruded material - Recommended tool: Alternating incline triple chip blade (negative angle / 80-120 teeth) - Feed speed (fz): 0.02-0.10 mm/tooth - Point: To prevent blade biting, a front angle of neutral to negative is recommended. Light application of lubricant is effective in preventing welding. ▶️ Aluminum sheet materials (such as A5052, A6061) - Characteristics: Thickness of 10mm or more, high strength, prone to work hardening - Recommended tool: Triple chip blade (50-80 teeth) with a robust design featuring relief angles - Feed speed (fz): 0.04-0.07 mm/tooth - Point: Excessive high-speed rotation poses a risk of heat generation. To avoid blade binding during cutting, blades with a split tooth structure are effective. ▶️ Fin-equipped heat sinks (extruded materials) - Characteristics: Fine fin sections + medium-thick base - Recommended tool: Triple chip blade (negative angle / 90-120 teeth) - Feed speed (fz): 0.03-0.06 mm/tooth - Point: Focus on burr suppression. Use a sharp new blade and apply a small amount of lubricant. Due to the thin material, a tooth count setting that ensures 2-3 teeth are always in contact is necessary.

We offer selection of the best saw blades for aluminum plates such as A5052 and A6061. Our expert staff will recommend the optimal blade type, diameter, and pitch based on the specifications of your cutting machine and usage conditions. Please feel free to consult with us.

This guide is an introductory material that clearly summarizes the knowledge needed to select the right saw blade for safely and cleanly cutting aluminum, making it easy for beginners to understand. It thoroughly explains the basics such as blade type, number of teeth, rotation speed, and feed rate, as well as the optimal conditions for different materials, all from a practical perspective. Utilizing the know-how accumulated by Okumura Machinery Manufacturing, it provides content that even those attempting aluminum cutting for the first time can use with confidence.

"CuFine 355" is a high-performance saw blade specialized for cutting copper busbars and copper plates. It adopts a high-low blade type with excellent straightness, achieving smooth and stable cutting. The design minimizes workpiece pinching during cutting, ensuring the safety of the operator. Furthermore, by dividing the chips into three parts, it significantly improves chip removal, contributing to a clean and efficient working environment.

The inclined blade (staggered blade) cuts aluminum sashes and extruded materials with minimal burrs and achieves a clean cutting surface by cutting equally from both sides. ■Target materials - Aluminum sashes for construction materials - Aluminum profiles - Small-diameter copper pipes

The blade type that cuts evenly on both sides allows for clean cutting of aluminum sashes and extruded materials with minimal burrs on the finished surface.

The D4 blade type, which excels in straight cutting performance, allows for the smooth cutting of thick aluminum and copper materials. It divides the chips into three parts to efficiently discharge the shavings.

This is a cost-effective saw blade with high performance, as it has lower cutting resistance compared to inclined blades and high-low blades, resulting in reduced power consumption.

The inclined blade (staggered blade) cuts aluminum sashes and extruded materials with minimal burrs and produces a clean cut surface by cutting evenly on both sides. ■Target materials - Aluminum sashes for building materials - Aluminum profiles