Cut Off Disc
Why Choose Us?
Rich Experience
Zhejiang Wanna Industry&Trade Co.,Ltd (TBAW) was established in 1995, As one of the leading abrasive manufacturers in China, we have accumulated a strong and good market trust as well as great customer satisfication over the past two decades.
Quality Control
QC department inspects product strictly at each stage of the production. the specifications of our products, such as sharpness, durability, impact strength and static balance have reached internationally advanced level.
Advanced Equipment
We have 4 tunnel kilns which controlled by computer. Automatic tunnel kiln will make the quality more the quality more stable and color more consistent. Seiko workshop,constant temperature all year round. For the stability of the raw material of the product,adhesive force has an important guarantee,to ensure the product quality more stable.
High Quality Service
Our sales team will be in charge of customer service. If there're any questions about products, you will not only get a quick response from us but also track the process of planning, production, QC, shipment in different stages.
Cut off discs differ from grinding wheels in their function and structure. Where grinding wheels use an abrasive to grind large pieces of material off a workpiece from a shallow angle, cut off discs typically make narrow, precise cuts at 90-degree angles. Consequently, cut off discs are often thinner than grinding wheels - though they do not have the lateral strength required for side grinding, their minimal thickness makes them better for clean, accurate cuts.
The Multi-function Cutting Disc is a versatile and reliable tool that gives you the advantage of performing multiple cutting applications with ease.
Cut Off Wheel For Angle Grinder
A cut off wheel is a cutting tool that is used with an angle grinder. It is designed to cut through different materials such as metal, stone, and concrete.
Cutting wheels, or cut-off wheels, differ from grinding wheels in their function and structure.
The Multi-Function Cutting Disk is a powerful and versatile cutting tool, designed to handle a wide variety of materials including steel, aluminium, wood, copper, brass, and plastic.
Our Depressed Cutting Disk is no exception. It is made from premium materials that are carefully selected and tested, ensuring that it is durable, resistant to wear and tear, and can withstand high temperatures.
A cut off disc is used for cutting various types of base materials made of metals, plastics, or the like. In general, the cut off disc is fabricated by pouring a composition including abrasive particles, a binder resin, and filler, into a disk-shaped mold, and compressing the composition at a predetermined pressure, followed by curing. Herein, as the binder resin, a phenolic resin, which is known as a heat-resistant resin with a glass transition temperature (Tg) of about 200° C., and a heat decomposition temperature of about 300° C., has been mainly used.
When a base material is cut by using such a cut off disc, the friction between the cut off disc and the base material generates heat, thereby increasing the temperature at the cutting area. This causes thermal damage to the cut off disc.
Such thermal damage to the cut off disc is one of the main causes of limitation of a cutting operation. Therefore, a research on the friction heat caused by the use of the cut off disc has recently been actively conducted. When the cut off disc is used to cut the base material, the friction between the cut off disc and the base material generates a friction heat, thereby highly increasing the temperature of a cutting area, that is, the interface temperature between the cut off disc and the base material, up to about 600° C.
Even though a heat-resistant resin (such as a phenolic resin) is used as a binder resin, a high friction heat generated at the cutting area heat-decomposes (thermally deforms) the phenolic resin existing on the cut off disc portion corresponding to the cutting area, thereby separating abrasive particles bound by the phenolic resin from the cut off disc. Such separation of the abrasive particles repeatedly occurs whenever the cut off disc is used, and thus the life of the cut off disc is reduced.
How Does a Cut off Disc Work
Often cut off discs are made from a solid abrasive disc. These discs are often used for cutting metal, they are composed of an abrasive mix of grit and adhesive that is formed into a thin, rigid disc with fiber webbing running through it for strength. Some discs used for cutting ceramic tile or stone are made from a solid disc with an edge coated with diamond grit.
The most common size for these cutting wheels is 4+1⁄2 inches in diameter, however they can range from 2 to 16 inches in diameter with a thickness range from .045 in. to .125 in. Type 1 discs are flat, and type 27 discs have a raised hub. These wheels are strong but are not immune to breaking.
If a cut off disc breaks while in use, fragments could injure the operator or nearby co-workers. To avoid breaking cut off discs, never exceed the maximum speed (RPM) specified on the disc, and do not overload the disc by cutting with excess force or jamming the wheel into your workpiece.
Whilst cut off discs and grinding discs are considered essential tools in many industries, it is a fact that they can also be the cause of serious injuries and even fatalities if used incorrectly or without the proper PPE.
All good quality discs will have an expiry date stamped on them somewhere. This is usually found on the central metal ring or on the disc itself. Occasionally it will be on a label attached to the disc.
It is important to note that this is a "use by" date that should never be exceeded.
The reason that cutting and grinding discs have a shelf life is that the resin that is used to bind the disc material together breaks down over time as it absorbs moisture from the atmosphere. This means that an out of date disc could break up during use, with sharp fragments being ejected at a very high speed.
How Do I Use Cut Off Discs Safely
Always be sure to comply with all accident prevention regulations when using grinding discs and cut-off wheels. The appropriate industrial safety pictograms are found on all discs and wheels. The cut off discs should always be replaced if showing any sign of damage which includes visible cracks, chips or any signs of bending or twists to the wheel. Cut-off wheels should be replaced when they hit their expiration date which can be found imprinted on the metal centre of the disc.
General Safety Guidelines
1. Check cut-off / grinding wheel for damage before use.
2. Ensure tool speed does not exceed the maximum rated speed of cut- off / grinding wheel.
3. Disconnect power source before changing wheels or when tool is not in use for extended periods.
4. Keep work area free of clutter and hazards.
5. Ensure the workpiece is secure.
6. Always wear appropriate personal protective equipment (PPE).
7. Never breach any restrictions to use i.e.
8. Do not use for wet grinding.
9. Do not use if broken.
10. Do not use the cut off disc for grinding
Techniques for Storing Cut off Discs
It is advisable to build storage racks, boxes, or drawers to organize and securely store each of the many existing discs. To reduce damage risk from extended storage, use grinding wheels rotating.
Here are some ideas.
Cut off discs must be laid flat and interlace-free on a firm surface. They can also be suspended from the ground by being mounted on a circular bar through the bore.
Cones, plugs, mounting points, and small wheels up to 80mm in diameter may be kept in the proper bins, drawers, or boxes.
Place large-diameter wheels in racks with cushioned two-point cradle support to prevent wheels from rolling. Also, using divisions facilitates and improves disc selection and viewing.
Use the original packaging for super abrasives to safeguard the item while stored. To avoid an abrasive layer, install protective separators between the cores.
The most convenient way to store vitrified grinding wheels is flat.
Wheels with thick rims, high-grade cylinders, and straight cups can be stored around their outside like regular wheels.
To avoid chipping of edges and wall cracking, soft grade, straight cup wheels and all type 11 tapered cup wheels should be stored base-to-base and rim-to-rim.
Choosing the Right Cut off Disc
When you are looking for a cut off disc for a metal-cutting job, there are a few things that you should note to ensure that you're choosing the right disc for the job. To cut metal, you will need an abrasive cut off disc (sometimes called a cutoff wheel).
When you use a cut off disc not rated for the type of metal you need to cut, you won't get the best results. The abrasives embedded in each wheel work best with specific metals.
If you try to cut softer, non-ferrous metals with low melting points like aluminum, brass, copper, and bronze with cutoff wheels that get too hot, you can end up damaging the metal or end up with burr formation. You'll find that aluminum cutting discs contain aluminum oxide and silicon carbide abrasives that remain cooler and are better for cutting softer metals.
Look for cutting discs made with resinoid-bonded abrasives. Resinoid embeds the abrasive materials into the wheel. So, the sharp grains continue to be exposed as the disc wears, extending its cutting life.
The most durable cut wheels use fiberglass as a reinforcement to increase wheel strength and resist breaking when you need to apply extra pressure.
Cutting disc thicknesses range from 0.04 in (1.02 mm) to 0.09 in (2.38 mm).
Ultra-thin cut off discs are 0.04 in (1.02 mm) or 0.045 in (1.14 mm) thick. These thinner discs cut metal faster with less waste.
Meanwhile, thicker discs remove more metal during a cut but last longer and are easier to use without needing to rock the machine as much when making the cut.
You can use thicker discs that are 1/16 in (1.57 mm) and above for cutting heavier metals. However, keep in mind that they cut slower, produce more heat, and may end up discoloring the metal.
Why Do Cut off Discs Break
Cut off discs are essential tools in metalworking, construction, and various industries, providing precision and efficiency in material cutting. The occurrence of cut off disc breakage can pose safety risks and hinder the smooth progress of tasks.
Overexertion and excessive pressure
● Issue: One of the primary reasons for cut off disc breakage is the application of excessive pressure during cutting. Overloading the disc beyond its design capacity can lead to stress concentrations and eventual fracture.
● Prevention: To prevent overexertion, operators should allow the cut off disc to do the work. Applying excessive force not only risks disc breakage but can also result in inefficient cutting and premature wear.
Incorrect disc selection
● Issue: Using the wrong type of cut off disc for a particular material or task can contribute to breakage. Different discs are designed for specific applications, and selecting an incompatible disc may lead to increased stress and breakage.
● Prevention: Always choose the appropriate cut off disc for the material being cut. Refer to manufacturer guidelines and markings on the disc to ensure compatibility with the intended application.
Poor quality or damaged discs
● Issue: Low-quality or damaged cut off discs are more prone to breakage. Discs with manufacturing defects, such as inconsistencies in composition or structural flaws, can compromise their strength and integrity.
● Prevention: Purchase cut off discs from reputable manufacturers and suppliers to ensure quality. Regularly inspect discs for any visible damage, such as cracks or warping, and discard any compromised discs immediately.
Incorrect mounting and installation
● Issue: Incorrect mounting or installation of the cut off disc on the tool can lead to uneven stress distribution, causing the disc to break during operation.
● Prevention: Follow the manufacturer's guidelines for mounting and installing cut off discs. Ensure that the disc is securely and centrally mounted, and use the appropriate flanges and locking nuts provided by the tool manufacturer.
Exceeding maximum rpm (revolutions per minute)
● Issue: Operating the cut off disc at a speed higher than the manufacturer's recommended rpm can generate excessive heat and centrifugal forces, contributing to disc breakage.
● Prevention: Always operate the cut off disc within the specified rpm range provided by the manufacturer. Check the tool's speed rating and adjust accordingly to prevent overheating and premature failure.
Improper storage and handling
● Issue: Poor storage conditions, such as exposure to moisture or extreme temperatures, can compromise the structural integrity of cut off discs. Additionally, mishandling during transportation or storage can lead to damage.
● Prevention: Store cut off discs in a dry and controlled environment, away from direct sunlight and extreme temperatures. Handle discs with care, avoiding impacts or drops that could cause structural damage.
Wear and tear
● Issue: Cut off discs naturally wear down over time with regular use. As they wear, the risk of breakage increases, especially if used beyond their recommended lifespan.
● Prevention: Periodically inspect cut off discs for signs of wear, such as reduced thickness or diminished abrasive material. Replace discs that show visible wear or have reached the end of their service life to prevent unexpected breakage.
Applications of Cut-Off Wheels
Cut-off wheels play an essential role in productivity and profitability, especially in large-scale metal fabrication operations.
Pipeline
When constructing or repairing a pipeline, professionals need cutting wheels capable of performing well in harsh conditions and lasting over long periods of your time. Alumina depressed center cutting wheels deliver the proper combination of performance and value when cutting steel and other metals. The depressed center provides added clearance when performing at a constrained angle, and .045 wheel thickness is right for cutting applications in the fab yard or field repairs.
Metal Fabrication
Cutting wheels support fabrication shops by providing aggressive cut-rate and long wheel life whether you're working with aluminum, armored steel, high-nickel alloys, steel, and chrome, titanium, or alloy steel.
Shipbuilding
In shipbuilding, nearly every component needs fabrication - from the ship's large external structures to smaller pieces like pipes, stairs, and handrails. While automation can assist with the manufacture of larger systems, smaller systems require cutting and grinding by hand before and after welding. Cutting wheels help shipbuilders get the work done quickly and safely so you'll meet tight deadlines.
Manufacturing
No matter what sort of product you manufacture, you would like to consider precision and price at every step of the method to satisfy clients and stay before the competition. High performing cut-off wheels improve operational efficiency and drive down costs.
Food And Pharmaceuticals
We provide contaminant-free cutting wheels for chrome steel cutting applications within the food processing and pharmaceutical manufacturing industries. These abrasive products contain but 0.1% sulfur, chlorine, and iron.
Our Factory
Zhejiang Wanna Industry&Trade Co.,Ltd (TBAW) was established in 1995, As one of the leading abrasive manufacturers in China, we have accumulated a strong and good market trust as well as great customer satisfication over the past two decades.
Zhejiang Wanna Abrasive company mainly produces resin bond Cutting Wheels, Grinding Wheels, Flap Disc and Velcro Disc which are applied to cut-off,grinding and polishing.
Seiko workshop,constant temperature all year round. For the stability of the raw material of the product,adhesive force has an important guarantee,to ensure the product quality more stable.
We have 4 tunnel kilns which controlled by computer. Automatic tunnel kiln will make the quality more the quality more stable and color more consistent.
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