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Circular Knife Blade
You need more than just a industrial circular knife blade, you need a veteran supplier with 20 years in the field to build your brand and increase your profits. Let PASSION help you achieve business success.
The Circular Knife Blade PASSION Offers You
Circular knife blades are one of the most common industrial blades and are used in a variety of industries, such as corrugated cardboard production, cigarette making, household paper, packaging and printing, copper foil and aluminum foil slitting, etc. You’ll find circular knife blades in most cutting scenarios, and whether you’re looking for a standard size or customized dimensions, with our 20 years of experience in the industry, PASSION will be able to accurately meet your unique needs.
Some Circular Knife Blade on Display
Over the past 15 years, we have manufactured nearly 5,000 different styles of industrial knives, of which circular knives account for about 45%, we have unparalleled experience in customizing circular knives, in addition to some common brand-name mechanical knives, we also accept customized drawings or incoming processing, Here are some of the industrial circular knives we have produced in recent years.
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What Are Circular Slitter Blades?
Circular slitter blades are tools to cut sheets into strips or smaller sheets of the desired width. These blades are highly versatile and can be used for various applications, such as cutting paper, textiles, and metal.
Circular slitting blades are made from generally carbide or high carbon steel and are designed to be mounted on rotating machines. Circular slitting blades come in a variety of sizes and shapes to suit different materials and applications. The most common type of circular slitting blade is the round cutter, which is a disk with a sharp edge that is used to cut materials.
Circular slitter blades or circular slitting knives are type of blades with sharp cutting edges. They usually have low cutting angles and no teeth. As the name suggests, circular slitter blades are mostly used for slitting type cutting operations.
A Wide Range Of Quality Materials
Much of the hardness of a blade depends on the density of the material, the higher the density the harder the blades will be, which means that they will be able to withstand erosion and wear over time, however it also means that the blades will be more brittle and less resistant to bending, so a good tool maker needs to be able to strike a balance between hardness and toughness, and PASSION produces blades with the ideal hardness to toughness ratio. Below are some of the proven blade materials that we can use to produce the right industrial machine knives for your needs.
Circular Knife Blade Tooth Configurations
Blade edge style determines its basic function, different cutting needs match different blade edge, reasonable blade edge can improve production efficiency, the following are some common edge forms.
What Is A Circular Knife Blade Used For?
Circular knives are a common blade that is in high demand and used in a wide variety of applications. Circular knives have many different uses, from clean cuts to processing large amounts of material to scribing and other techniques. Circular knives are used for a wide range of applications, including the following:
Cutting
Circular knives have a reputation for cutting different materials quickly, stably and completely. Rotating blades mounted on stationary machines make clean, downward cuts in materials ranging from high-density concrete to thin textiles. Circular knives offer a good all-around solution in applications dealing with a wide range of materials.
Trimming
Trimming a variety of products with a thin, precise blade makes them fine and accurate, helping to increase productivity and improve the quality of the processed product. Circular knives can trim materials such as fabric, leather, rubber, plastic and sheet metal.
Slitting
When people refer to industrial circular knives as “slitting knives”, they are usually referring to bevelled or toothless types of circular knives. These blades are the ideal blade type for slitting materials, which is one of their primary uses. Circular knives are suitable for a variety of slitting techniques, including hot knife, shaving and shearing.
Slicing
Circular knives offer the best solution for high workloads, such as repeatedly slicing material into uniform slices. Industries such as food processing, textile manufacturing, and metal cutting rely on circular knives for accurate, consistent, and productive slicing. Downward slicing with circular knives works well for cutting dense materials, as well as materials and fabrics that tend to slide.
Scoring
When you need fine precision tools, circular knives can help you realise the technique of scratch cutting. With the right combination of blade type and material, you can scribe on glass, stone, concrete, metal and a range of other materials. They are accurate enough to be used in precision scribing applications for paper products and packaging materials.
Creasing
When creasing fragile materials such as paper and packaging, you need a precise blade that produces a smooth, uniform crease. Rotary blades allow you to control the indentation and help you produce a high quality product.
Splitting
When you need to split materials without the risk of chipping, you need a blade that provides a clean, consistent cut and leaves a smooth finished product. Bevelled or toothless circular knives help split thin, lightweight materials, while circular knives with serrated edges make it easy to split denser, more durable materials. With the right configuration, your circular knives are ideal for splitting leather, rubber, paper, foam and more.
What Industries Use Circular Knife Blades?
Circular knives are one of the most widely used industrial machine blades. As such, they are in high demand across a wide range of industries and businesses of different sizes. Here are some examples of industries that use circular knives.
Food processing
Circular knives are one of the main cutting knives used in the food processing industry. Whether you’re trimming, slicing or cutting products such as meat, dairy, baked goods, seafood, fruits and vegetables, circular knives help you do it with precision.
Plastics
Make plastic processing faster and more efficient with plastic circular knives. With circular knives, you can cut, score, perforate and slit plastic products for high-quality results.
Foam
Foam processing needs can differ greatly depending on the type, density and hardness of the foam. Circular knives are the ideal knife for processing a wide range of foam products. Whether you need to cut, trim, slit, or slice, custom industrial circular knives can meet your needs.
Textiles and leather
Circular knives are useful when cutting textiles and leather. The downward cutting precision blades can easily handle materials of various textures and thicknesses. Premium leather cutting blades split leather, while circular textile knives can perforate and trim different fabrics.
Foil, film and metals
Cutting foils, films and metals requires precise and accurate cutting knives. Circular blades, whether serrated or bevelled, are ideal for processing foil, film and metal. They make clean cuts and perforations and give you control over trimming.
Paper and corrugated paper
When you need to prepare high workloads of paper products, corrugated cardboard, packaging materials and other products, circular knives are ideal for scoring and cutting. Choose a custom circular knives design to meet your paper processing needs.
Packaging
When processing packaging materials, you need a versatile and high-quality blade. A circular knife can precisely cut, trim, slit and split different packaging materials.
Wood
Wood cutting requires high quality, durable and productive knives that can effectively handle high workloads. Industrial rotary blades stand up to repeated use and cut cleanly, accurately and smoothly, as well as minimising splitting.
Fiberglass
Processing fibreglass and composite materials requires durable blades for precise, clean cuts and trimming. Industrial circular knives make precise cuts and help you achieve a wide range of fibre cutting techniques.
Glass, stone and concrete
Glass, stone and concrete cutting applications require blades with a high degree of control, accuracy and precision. Circular knives designed to meet these cutting needs are made of ideal materials that remain sharp in high-volume applications
What Are The Types Of Circular Slitting Blades?
Razor Slitting Blades
Application: Ideal for cutting thin materials such as films, foils, and laminates.
Features: Provides a clean, burr-free cut; commonly used for high-speed applications.
Material: Usually made of hardened steel or tungsten carbide for durability.
Score Slitting (Crush Cut) Blades
Application: Used for cutting thicker, tougher materials like rubber, foam, and some textiles.
Features: Cuts by applying downward pressure, “crushing” through the material.
Material: Often made from high-speed steel or carbide, with a blunt or beveled edge for durability.
Shear Slitting Blades
Application: Ideal for cutting paper, cardboard, nonwoven materials, and some metals.
Features: Uses paired blades in a scissor-like action, providing precise cuts with minimal dust or burr.
Material: Made from hardened steel, high-speed steel, or carbide for long-lasting sharpness.
Perforating Blades
Application: For creating perforations in materials like paper, film, or foil, commonly used in packaging and labeling.
Features: Produces a series of small cuts to make materials easy to tear along a line.
Material: Manufactured from high-speed steel or carbide, with a customized tooth pattern.
Carbide-Tipped Blades
Application: Used in heavy-duty or abrasive materials, providing longer wear life and resistance to wear.
Features: Offers superior cutting performance and durability for high-production settings.
Material: Features carbide edges for toughness, often combined with steel cores for strength.
Toothed Blades
Application: Primarily used in applications where a saw-like action is necessary, such as cutting fibrous.
Features: Tooth design provides aggressive cutting, helpful in challenging or dense materials.
Material: Made from hardened or high-speed steel, with options for carbide tips on teeth for added durability.
What Maintenance Is Required For Circular Knife Blades?
Proper maintenance of circular knife blades is essential to ensure optimal performance, durability, and safety. Here are key maintenance steps to keep your blades in excellent condition:
Regular Cleaning
- Debris Removal: After each use, remove any debris, residue, or buildup using a soft brush or cloth. This prevents residue from dulling the blade or causing uneven cuts.
- Cleaning Solution: Use a suitable industrial-grade cleaning solution for more thorough cleaning if sticky substances are present. Avoid harsh chemicals that can degrade blade material.
Lubrication
- Reduce Friction: Apply a light coat of lubricant or protective oil to the blade to reduce friction, prevent rust, and extend its lifespan, especially in humid environments.
- Check Manufacturer Guidelines: Use lubricants recommended by the manufacturer to avoid chemical reactions or damage.
Sharpening
- Maintain Sharpness: Schedule periodic sharpening to ensure cutting precision. Dull blades can lead to uneven cuts and higher energy consumption.
- Professional Sharpening: Use professional services for consistent quality or utilize a sharpening tool compatible with the blade’s material and specifications.
Inspect for Wear and Damage
- Check for Chips and Cracks: Visually inspect for any chips, cracks, or irregularities along the blade’s edge that could lead to performance issues or safety hazards.
- Replace if Necessary: If there are significant signs of wear, consider replacing the blade instead of repairing it to maintain safety and operational efficiency.
Blade Alignment and Balance
- Rebalance Blades: Ensure that the blade remains balanced during rotation to prevent vibrations, uneven wear, or equipment damage.
- Alignment Checks: Verify proper alignment with the machinery for accurate cuts and reduced wear.
Storage
- Dry Environment: Store blades in a dry and temperature-controlled environment to avoid rust or corrosion.
- Protective Covers: Use protective covers or cases to prevent accidental damage and ensure worker safety.
Usage Protocols
- Correct Operation: Operate within the recommended speed and material guidelines to avoid unnecessary strain.
- Avoid Overheating: Allow blades to cool if they become excessively hot during prolonged use, which can alter their structural integrity.
How Do You Sharpen Circular Knife Blades?
Preparation
- Clean the Blade: Remove any debris, resin, or leftover materials using a suitable cleaning agent.
- Inspect the Blade: Check for any signs of excessive wear, cracks, or damage. If the blade is severely damaged, replacement may be more cost-effective.
Choose the Correct Sharpening Equipment
- Grinding Machines: Use a dedicated blade grinding machine designed for circular blades, which ensures consistent sharpening angles and avoids over-grinding.
- Grinding Wheel Selection: The choice of grinding wheel (diamond or abrasive) depends on the material composition of the blade. Carbide-tipped blades typically require a diamond wheel.
Sharpening Process
- Set the Blade: Secure the blade in the grinding machine, ensuring it is stable and positioned correctly.
- Adjust the Angles: Align the grinding machine to match the blade’s original bevel angle. Maintaining the correct angle is crucial for performance and longevity.
- Coolant Application: Use coolant to prevent overheating and preserve the blade’s hardness.
- Grinding: Carefully pass the grinding wheel over the blade’s teeth in a consistent manner. This should be done gradually to avoid excessive removal of material.
Final Steps
- Deburring: Remove any burrs that may form during the sharpening process to maintain a smooth, sharp edge.
- Inspection and Testing: Check the blade for uniform sharpness and balance. Conduct a test cut if possible to ensure optimal performance.
How Long Do Circular Knife Blades Typically Last?
The lifespan of circular blades can vary significantly based on several factors, such as the cutting material , the blade material, the cutting speed, and the operating conditions. Generally:
Carbide Circular Blades
These are known for their durability and can last between 50 to 100 hours of continuous operation under optimal conditions. They have high wear resistant, making them ideal for cutting hard materials or when consistent precision is needed.
High-Speed Steel (HSS) Circular Blades
Depending on the application, these usually last 20 to 40 hours of use,. They are less durable than carbide blades but can still provide a good lifespan when used on softer materials.
Ceramic-Coated Circular Blades
These have higher wear resistance and can exceed the lifespan of carbide blades, often reaching up to 120 hours or more.
Keep in mind that improper use, insufficient cooling, or cutting abrasive materials can greatly shorten a blade’s lifespan. Regular maintenance and proper use of the right blade for the cutting material can maximize efficiency and lifespan.
