Roller shearing blades

What do Roller Shearing Blades Mean?

Roller shearing blades, also known as rotary shear blades or disc shear blades, are circular cutting tools designed for use in roller shearing machines or slitting machines. These blades work by rotating against each other or against a fixed anvil to cut materials, typically sheet metal, coils, or strips, into narrower widths or specific shapes. The term “roller shearing blades” highlights their cylindrical or disc-like form and their application in rotary shearing processes.

Uses and Applications of Roller Shearing Blades

Roller shearing blades are widely used in various industries for continuous and efficient cutting of materials. Key applications include:

• Metalworking Industry: Slitting steel coils, aluminum coils, and other metal strips into desired widths for further processing. Edge trimming of metal sheets to ensure precise dimensions. Cutting blanks for stamping or forming operations.
• Steel Mills: Hot and cold shearing of steel bars, rods, and billets during the rolling process.
• Automotive Industry: Cutting sheet metal for car body panels and other components.
• Appliance Manufacturing: Cutting metal sheets for appliance casings and parts.
• Packaging Industry: Slitting and cutting various packaging materials, including metal foils, films, and laminates.
• Textile Industry: Slitting rolls of fabric and nonwovens into narrower widths.
• Paper Industry: Slitting large rolls of paper into smaller widths for printing and converting processes.
• Rubber and Plastics Industries: Cutting and slitting rubber sheets and plastic films.

Common Materials for Roller Shearing Blades

The materials used for roller shearing blades are selected for their durability, wear resistance, and ability to maintain a sharp cutting edge under continuous operation. Common materials include:

• Tool Steel (e.g., D2, A2, O1): Offers a good balance of hardness, toughness, and wear resistance, suitable for many metal slitting applications.
• High-Speed Steel (HSS): Provides excellent wear resistance and the ability to retain hardness at elevated temperatures, making it suitable for higher-speed slitting operations. Grades like M2 are commonly used.
• Alloy Steel (e.g., H13, LD): Offers high temperature resistance and is suitable for hot rolling and hot shearing processes in steel mills.
• Tungsten Carbide: Provides exceptional hardness and wear resistance, ideal for high-speed slitting of hard and abrasive materials, significantly extending blade life. Can be used as solid carbide blades or as carbide inserts.
• Specialty Alloys: Depending on the specific application and material being cut, other specialty alloys may be used to provide optimal performance and longevity.

Heat treatment to achieve the desired hardness (typically in the range of HRC 57-62) is a critical step in the manufacturing process to ensure the blades can withstand the stresses of shearing. Coatings like titanium nitride (TiN) can also be applied to enhance surface hardness and reduce friction.

Common Roller Shearing Blade Shapes

Roller shearing blades are typically circular discs with various edge profiles depending on the cutting application:

• Solid Disc Blades: One-piece circular blades with a sharpened outer edge. The edge can be square, bevelled (single or double), or radiused.
• Inserted Blades: Feature replaceable cutting inserts made of a harder material (like carbide) attached to a steel body. This allows for cost-effective replacement of the wearing edge.
• Dished Blades: Circular blades with a concave or convex profile, often used for slitting where material tension needs to be controlled or to create specific edge profiles.
• Bevelled Edge Blades: The cutting edge is angled to create a shear point, which can reduce the cutting force required for certain materials. Single or compound bevels can be used.
• Scored/Crush Cut Blades: Used in pairs, these blades often have rounded or profiled edges that press against an anvil to create a score or crush cut, commonly used for thinner materials like paper or film.

The working principle of roller shearing blades involves the rotation of one or more circular blades against a stationary blade or anvil. The material passes between these rotating elements, and the shearing action occurs due to the applied pressure and the sharp edges of the rotating blades. In slitting operations, two or more roller shearing blades are often used in conjunction with spacers to achieve multiple cuts simultaneously, creating strips of the desired width. The precision of the blade geometry, the material of the blades, and the setup of the shearing machine are crucial for clean and accurate cuts.

Choose Nanjing Metal Industrial‘s rotary shear blades for more efficient and precise metal slitting production, and enjoy the assurance of durable and high-quality performance.

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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!

Roller shearing blade Display:

High-Precision Roller Shearing Blades for Efficient Rotary Cutting

Roller shearing blades, a type of rotary cutter blade, are essential components in various industrial cutting processes where continuous, high-speed shearing is required. At Nanjing Metal, we specialize in the design, manufacturing, and customization of high-performance roller shearing blades engineered for accuracy, durability, and optimal performance in rotary cutting applications. Our commitment to using premium-grade materials and employing advanced manufacturing techniques ensures that our roller shearing blades deliver clean, efficient cuts and contribute to increased productivity.

Versatile Applications in Rotary Shearing Operations:

Our roller shearing blades find critical applications across a wide range of industries. In the metalworking sector, they are used in rotary shears for slitting coils, cutting sheets, and trimming edges of various metals like steel, aluminum, and copper. The paper and converting industry utilizes roller shearing blades for slitting paper rolls, films, and foils. In the textile industry, rotary cutters with these blades are employed for continuous cutting of fabrics. Furthermore, roller shearing blades are used in the rubber and plastics industries for slitting and trimming continuous webs of material. Their rotary action allows for high-speed and continuous cutting, making them ideal for automated production lines.

Durable Materials for Reliable Rotary Cutting:

The performance and lifespan of roller shearing blades are significantly influenced by the materials used in their construction. Nanjing Metal utilizes a selection of high-quality materials to manufacture our rotary cutter blades for shearing, including:

• High-Carbon High-Chromium Steel (e.g., D2, Cr12MoV): Offers excellent hardness, high wear resistance, and good toughness, making it ideal for shearing various metallic and non-metallic materials in rotary applications.
• Alloy Tool Steel (e.g., A8, SKD11): Provides a superior balance of toughness and wear resistance, ensuring prolonged blade life even under continuous, high-speed operation. Specific alloys are chosen based on the material being cut.
• High-Speed Steel (HSS): Exhibits exceptional hardness and the ability to retain sharpness at high rotational speeds, suitable for demanding applications and high-volume production.
• Carbide: Offers superior hardness and wear resistance, making it ideal for cutting abrasive materials and achieving extended tool life in rotary shearing processes. Carbide-tipped roller shearing blades are particularly effective for challenging materials.

The selection of the appropriate material depends on factors such as the type and thickness of the material being cut, the rotational speed, the required precision, and the desired lifespan of the roller shearing blades. Our experienced engineers can assist you in choosing the optimal material for your specific rotary shearing needs.

Customization Advantages with Nanjing Metal:

Nanjing Metal excels in providing customized roller shearing blade solutions tailored to the unique requirements of your rotary cutting applications. We understand that different materials, machinery, and production demands necessitate specific blade designs and configurations. Our customization advantages include:

• Precise Dimensional Accuracy: We manufacture roller shearing blades to your exact dimensional specifications, including diameter, thickness, and bore size, ensuring perfect fit and optimal performance within your rotary shearing machinery.
• Optimized Blade Geometry: We can customize the blade edge profile, bevel angle, and number of cutting edges to achieve clean and efficient cutting for your specific materials and rotary cutting processes.
• Material Selection Expertise: Our experts provide comprehensive guidance on selecting the most appropriate material and heat treatment process to ensure maximum wear resistance, toughness, and longevity for your rotary shearing application.
• Surface Treatments: We offer various surface treatments, such as hard chrome plating or specialized coatings, to further enhance wear resistance, reduce friction, and prevent material build-up on the roller shearing blades, improving cutting quality and extending blade life.
• Custom Designs: We can accommodate various tooth profiles (if required for specific materials), scoring edges, and other specialized features to perfectly match your rotary shearing equipment and cutting requirements.

By choosing Nanjing Metal for your roller shearing blade needs, you gain access to high-quality, precisely engineered, and fully customized rotary cutting solutions that enhance the efficiency, accuracy, and productivity of your shearing operations. Contact us today to discuss your specific requirements and experience the Nanjing Metal advantage in roller shearing blades.

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