Fly Shear Blades

What do Fly Shear Blades Mean?

Fly shear blades, also known as flying shear blades or cut-to-length blades, are critical cutting tools used in fly shear machines. These machines are designed for continuous, high-speed cutting of moving materials, typically metal strips, tubes, or profiles, into predetermined lengths without stopping the material flow. Fly shear blades operate in synchronization with the moving material, “flying” along with it momentarily to make a precise cut. The term “fly shear blades” emphasizes their dynamic cutting action while the material is in motion.

Uses and Applications of Fly Shear Blades

Fly shear blades are essential in industries requiring continuous cutting of moving materials to specific lengths. Key applications include:

• Steel Mills and Metal Processing: Cutting continuously rolled steel strips, bars, tubes, and profiles into desired lengths in hot and cold rolling mills.
• Tube and Pipe Manufacturing: Cutting continuously formed tubes and pipes to specified lengths.
• Roll Forming Lines: Cutting metal profiles as they exit roll forming machines.
• Strip Processing Lines: Cutting metal strips in slitting, leveling, and other processing lines.
• Aluminum Extrusion: Cutting extruded aluminum profiles to length.
• Paper and Converting Industries: Cutting continuous webs of paper, film, and foil into sheets or specific lengths.
• Textile Industry: Cutting continuous lengths of fabric or nonwovens.
• Packaging Industry: Cutting continuous strips of packaging materials.

Common Materials for Fly Shear Blades

The materials used for fly shear blades must withstand high-speed impact, abrasion, and fatigue, while maintaining a sharp cutting edge for clean and accurate cuts. Common materials include:

• Tool Steel (e.g., D2, A2, O1, S7): Offers a good balance of hardness, toughness, and wear resistance, suitable for many fly shear applications, especially for cutting softer metals and materials. Shock-resistant tool steels like S7 are used for high-impact applications.
• High-Speed Steel (HSS) (e.g., M2, M4): Provides excellent wear resistance and the ability to retain hardness at elevated temperatures, making it suitable for higher-speed cutting of various metals.
• Alloy Steel (e.g., 4140, 4340): Offers high strength and toughness, suitable for cutting thicker and harder materials, often used in heavy-duty fly shears.
• Tungsten Carbide: Provides exceptional hardness and wear resistance, ideal for high-speed cutting of abrasive materials and harder metals, significantly extending blade life. Often used as inserts in larger blade holders.

Heat treatment to achieve the optimal hardness (typically in the range of HRC 55-65 depending on the material and application) is crucial for the performance and longevity of fly shear blades. Coatings such as chromium plating or titanium nitride (TiN) can be applied to enhance surface hardness, reduce friction, and improve wear resistance.

Common Fly Shear Blade Shapes

Fly shear blades come in various shapes and configurations depending on the type of fly shear machine and the material being cut. Common shapes include:

• Straight Blades: Long, straight blades that move linearly across the material to make a cut. Often used for cutting flat materials like strips and sheets.
• Rotary Blades (Circular Blades): Disc-shaped blades that rotate to make the cut as they move along with the material. Used for cutting various profiles and tubes.
• Segmented Blades: Blades made up of multiple replaceable segments, often used for cutting heavier sections or when frequent blade changes are necessary.
• Notched Blades: Blades with specific notches or profiles to create particular cut shapes or to aid in gripping the material during the cut.
• Shear Blades (Upper and Lower): Often used in pairs, with one or both blades moving to create a shearing action. The geometry of the blade edges (bevel angle, clearance) is critical for a clean cut.

The working principle of fly shear blades involves synchronizing the movement of the blades with the speed of the moving material. Sensors and control systems ensure that the blades accelerate to match the material speed, make a clean cut at the desired length, and then retract quickly to prepare for the next cut, all without stopping the material flow. The design of the blades, the speed and force of the cutting action, and the precise control of the machine are all critical for achieving accurate cut lengths and maintaining high production rates.

Our Advantages

• Advanced Manufacturing Process: We use state-of-the-art equipment and processes to ensure stable product quality.
• Strict Quality Control: Every step, from raw material selection to final product inspection, is strictly monitored.
• Custom Services: We offer personalized blade design and manufacturing services based on customer needs.
• Fast Delivery: Efficient production processes and logistics ensure timely delivery.
• Professional After-Sales Service: We provide expert technical support and maintenance services to ensure customer satisfaction.

Our flying shear blades have earned recognition and trust from many customers due to their superior performance and reliable quality. We are committed to continuously providing the best products and services to help our customers improve production efficiency and product quality.

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If you don’t find the shear blade you are looking for, we can also customize it, see our “Custom Blades” to learn how!

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Why Choose Metal?

1. One-stop hassle-free import service

Easy to enjoy the convenience of importing, from transportation to customs clearance, we handle the whole process, you just need to pay VAT and wait for the goods to arrive at the company.

2. Competitive Pricing

We have seen its blades used in countless applications and is ready to handle whatever project you throw our way -delivering accuracy, durability, and unmatched competitive pricing.

3. ODM & OEM Available

Whether you provide drawings, sketches or samples, we are able to draw and manufacture for you. We also have the ability to assist in modifying existing designs and specifications to improve almost any industrial tooling application. Please contact our dedicated sales team to discuss your specific requirements.

4. Quality Control

A series of testing and inspections are performed to control quality, including first article inspection, Incoming material inspection, and materials certified, In-process quality inspection, Final quality inspection.

5. Flexible procurement, unlimited cooperation

Whether you are an importer, distributor, wholesaler or end-user, we welcome you to join us with minimum MOQ, no hassle for inquiry and more freedom for purchasing.

6. Overseas monitor, production progress real-time report

Become your exclusive monitor, regular transmission of every important node in the production line, no matter how far away, the progress of the product as far as possible to grasp!