Grinding Disc

Company Profile

Jinan Enying Abrasives company was founded in 2011, the company is headquartered in Mingshui Street, Zhangqiu District, Jinan City, Shandong Province, professional export abrasive tools designated processing and sales factory, has passed the national quality management system certification, with 5000 square meters of modern standard production workshop, Equipped with a number of international leading automatic high-precision standard production lines, the annual production of all kinds of abrasive tools 50 million, the existing staff of more than 100 people, registered capital 50 million yuan, the existing national assets 60 million yuan. We have a professional R & D team, advanced production technology and design concept. "Create first-class brand, do first-class enterprise", truly let you not worry, rest assured, is our constant service tenet. Customer is our God, quality reputation is our forever pursuit goal. Welcome friends from all walks of life to visit Jinan Enying abrasives company to visit, guidance and business negotiations.

Why choose us?

Experience

In 2011, Enying company established its first professional sales team.

Production

A new factory was complete construction and jinan enying abrasive tools co.,ltd was established, with a modern standard production workshop of 5,000 square meters.

Technology

The annual production of all kinds of abrasive tools 50 million pieces.

R&D team

Enying Company is constantly developing and making progress. We firmly believe that the future of the company will be better and better.

What is Grinding Disc

Grinding wheels are discs that contain abrasive particles and grains that have been bonded together to form a wheel shape. Although the disc format is the most common shape, they can also be made in the shape of cones or cups.

Grinding wheels are attached to grinders or saws and rotated at high speeds for a variety of tasks. The abrasive grit and grains in the wheel are able to grind or cut through hard materials such as metal or steel. The abrasive grains are bonded together by either organic or inorganic substances.

Benefits of Grinding Disc

Efficiency of material removal
One of the advantages of grinding wheels is their exceptional ability to remove material efficiently. The abrasive grains embedded in the wheel's surface cut, grind, and/or shape material, make it an effective tool for quickly removing excess material and achieving the form that is required of the workpiece.

Versatility across different materials
Grinding wheels are versatile tools that can handle a wide range of materials, from metals like steel and aluminum to hard materials like ceramics and stone. This versatility makes them invaluable in industries where a large range of materials have to be used on projects.

Precision and accuracy
Grinding wheels in skilled hands can provide precision and accuracy in shaping and finishing. The controlled abrasion offered by the wheel allows for fine adjustments, enabling craftsmen to achieve tight tolerances and smooth surfaces, crucial in applications such as tool and die making.

Available in different types and sizes
Grinding wheels are available in a range of types and sizes, each designed for specific tasks. From straight wheels for surface grinding to cup wheels for contouring and cylindrical wheels for precision grinding, the variety allows users to select the most suitable tool for their application.

Longevity and durability
High-quality grinding wheels such as the wheels manufactured by Kamel Grinding Tools are constructed with durable materials and bonded abrasives giving excellent longevity. This durability reduces the frequency of replacements and provides cost savings over the long term.

Cooling mechanisms
Our most advanced grinding wheels incorporate cooling mechanisms in to the wheel, these features include a more porous structure and specially formulated bonds. These improvements help dissipate heat generated during the grinding process, prevent overheating, and minimize the risk of thermal damage to the workpiece.

Improved efficiency
Grinding wheels can improve job efficiency by their ability to quickly shape or finish materials. This is particularly important in industries where time is a critical factor. Using quality grinding wheels can contribute to increased worker productivity and faster project turnaround times.

Large range of applications
Grinding wheels find use in a large range of industries, including manufacturing, automotive, aerospace, and construction. Whether for precision machining or heavy-duty material removal, the adaptability of grinding wheels makes them a go-to tool on a large range of projects and workpieces.

Ease of use
Grinding wheels, whether mounted on handheld grinders or integrated into larger grinding machines, are generally user-friendly. Their ease of use makes them accessible to a wide range of users, from seasoned craftsmen to novice operators.

Types of Grinding Disc

Type 1
A type 1 snagging wheel has a straight profile and a relatively small diameter of about 2 to 4 inches. Its size makes it ideal for use on high-speed die grinders for grinding off excess metal. Weiler Abrasives' type 1 snagging wheels incorporate aluminum oxide grains for a long life grinding and a consistent cut-rate.

Type 27
Type 27 is by far the most common abrasive grinding wheel. Type 27 grinding wheels differ from other wheels in that they have a flat profile with a depressed center. A depressed center allows for clearance when the operator must work at a constrained angle.

Using a wheel with a depressed center allows for a range of grinding angles, typically from 0 to 45 degrees. However, the optimal angles for working with type 27 grinding wheels range from 25 to 30 degrees. The steeper the grinding angle, the more aggressive the cut will be.

Working at shallow angles with these wheels requires some consideration of potential ramifications. Grinding at shallow angles can prolong the wheel's lifespan, but it also often compromises the cut-rate. On harder materials, shallow grinding angles may also increase unwanted vibration and chatter.

Type 28
Type 28 grinding wheels, also known as saucer wheels, have similarly depressed centers and are optimized for low grinding angles. They differ from type 27 wheels in that their concave or saucer-shaped design allows for better access to the workpiece — especially in tighter areas, such as corners, fillets and overhangs — and increased aggression at smaller working angles. They can work at angles between 0 and 30 degrees but typically work best for use with grinding angles from 0 to 15 degrees.

Material of Grinding Disc

Commonly grinding wheels made of aluminum oxide, silicon carbide, cubic boron nitride, and diamond.

A grinding wheel consists of a composite material. This coarse particles presses and then bonds together by the cementing matrix called a bond.

This results in the formation of the sold circular shape of various types of the grinding wheel. Depending on the usage of the wheel, there are various profiles and cross sections of the precision grinding wheel available.

Nowadays there are various types of material used for making of the grinding wheel. This depends on the usage of the grinding wheel.

These are generally constructed out of sold steel and aluminum steel. The particle bonds with the help of the natural composite stones like that of millstones.

Application of Grinding Disc

For the rapid removal of fabric for the smooth finish of the surface, like a fettling operation, a coarse-grained, open structure is desirable. Finish depends mostly on the dimensions of grit utilized in the grinding wheel. Still, on precision grinders on which proper diamond truing and dressing devices are available, it's possible to get a subtle finish without sacrificing production.

Therefore, the more severe the machine, the better its condition, the softer the wheel for the work.
Wheel speed is another critical factor influencing grit and grade selection, as a rigid wheel is often made to seem soft by running it very slowly. It's usually best to run a grinding wheel at the manufacturer's recommended speed.

Proper Mounting of a Grinding Disc

The improper mounting of a grinding wheel is a major cause of grinding wheel breakage. Proper steps in mounting a grinding wheel are as follows:

Handle and store grinding wheels in a careful manner. Handle and store all grinding wheels as if they were made of glass!
Select the proper grinding wheel and machine for the job.
Lock out and tag all machines before working on them. Disconnect portable machines from their power source before changing the grinding wheel.
Visually inspect all grinding wheels. Also, the use of “ring testing” or “vibration testing” is required for many grinding wheels. Never use a damaged grinding wheel.
Check the machine speed against the maximum operating speed of the grinding wheel. The speed of the grinding wheel must be equal to or greater than the machine’s speed. Never overspeed a grinding wheel.
Inspect the machine and its guards. Check the machine’s speed with a tachometer before mounting grinding wheels. Never use a damaged machine.
Clean arbor and flanges before mounting a grinding wheel.
Check the mounting flanges for proper type, size, and flange condition. Never use mismatched, undersize, dirty or damaged flanges.
Use only machines designed and guarded for the grinding wheel you are using. Never mount a grinding wheel on a machine that is not designed for that grinding wheel.
Use proper mounting blotters when required or supplied by the manufacturer.
Do not reuse blotters and use only one blotter for each side of the wheel.
Care must be taken to ensure that all blotters are not allowed to “bunch up” or fold over and do not get caught inside the wheel’s hole.
Do not force a grinding wheel onto the mounting arbor. If the wheel does not fit, don’t use it.
Don’t over-tighten the mounting nut or mounting screws. Tighten flanges just enough to prevent wheel slippage or to machine manufacturer’s recommendation. Excessive tightening can cause damage to the mounting flanges and wheel breakage.
Replace all guards and reset the machine to accommodate the new grinding wheel.
Wear all required personal protective equipment.
Allow the grinding wheel to run at operating speed for one full minute before using the grinding wheel. Do not allow anyone to stand in front of or in line with the grinding wheel during this test.

How to Maintain Grinding Disc

Inspection
The first step in maintaining grinding wheels is to inspect them regularly. This involves checking for cracks, chips, and other types of damage that may have occurred during use. Visual and dimensional checks can help detect any issues with the wheel. If any damage is found, it is best to replace the wheel rather than attempting to repair it.

Dressing and truing
Dressing and truing are essential maintenance techniques that help restore the grinding wheel’s shape and improve its performance. Dressing involves removing the dull and worn abrasive particles from the wheel, while truing involves reshaping the wheel to its original form.

Both dressing and truing can be done using various tools, such as diamond dressers and truing stones. It is important to perform these tasks regularly to keep the grinding wheel in good condition.

Balancing
Balancing grinding wheels is another important aspect of maintenance. An unbalanced wheel can cause vibration and noise, leading to decreased performance and increased wear and tear on the machine. Balancing can be done using a balancer, and it is important to follow the manufacturer’s instructions carefully.

Storage
Proper storage of grinding wheels is essential to prevent damage and extend their lifespan. It is important to protect the wheels from moisture, dust, and other environmental factors that can cause damage. Storing the wheels in their original packaging or a protective container is recommended.

Safety precautions
When working with grinding wheels, it is important to take safety precautions to prevent accidents and injuries. Personal protective equipment, such as gloves, safety glasses, and hearing protection, should be worn at all times.

Precautions should also be taken while handling and using the grinding wheels, such as avoiding overloading, following the manufacturer’s instructions, and using the correct speed for the wheel.

How to Choose the Right Grinding Disc

The material being ground
The first thing to consider when selecting a grinding wheel specification is what are we grinding? What is the material, and how hard is it? Is it easy to grind or difficult? By reviewing these elements, we can select the correct abrasive type, the grain’s attributes, the appropriate grit size, and bond type.

The severity of the operation
Here we consider how much or how heavy the grinding pressure will be in the grind zone. The higher the grinding pressure or force per grain, the more severe the operation. It is operations like these where today’s ceramic and superabrasive grains do well. Much like the material we are grinding, severity of operation helps us determine the attributes of the abrasive grain.

Required finish and form accuracy
We use abrasive products such as grinding wheels because of their speed, ability to repeat form, and achieve finish. When trying to select the correct wheel specification, we need to look at the operation and establish whether we are looking for rapid stock removal or a finer finish. Whether the part is simple/flat or if there is a form to hold. Knowing these requirements will help us select the correct grinding wheel for the process.

Area of contact
Area of contact, the fourth factor we consider, is in part related to the second factor: severity of operation, in that it considers the amount (or area) of contact between the work and the wheel. This factor looks at how the force applied to make a chip will be distributed through the grind zone in much the same way surface area is related to pressure in a hydraulic system. When a wheel is applied to the work, the force applied is distributed over all the cutting points in the grind zone. The larger the area of contact, the lower the force per gain. Conversely, the smaller the area, the higher the force per grain.

Certifications

Our Factory

A new factory was complete construction and jinan enying abrasive tools co.,ltd was established, with a modern standard production workshop of 5,000 square meters. With a number of international leading automatic high-precision standard production lines, the annual production of all kinds of abrasive tools 50 million pieces.
Enying Company is constantly developing and making progress. We firmly believe that the future of the company will be better and better. We also hope that we can leave a perfect cooperation with you in our company history.

FAQ

Q: What is a grinding disc?

A: A grinding disc is an abrasive tool that is used to remove material from a surface, typically metal, stone, or concrete, to smooth it, shape it, or prepare it for further processing. It is attached to a power tool such as an angle grinder.

Q: What are grinding discs made of?

A: Grinding discs are typically made from abrasive materials such as aluminum oxide, silicon carbide, or diamond, bonded to a backing material like fiberglass or resin.

Q: How do grinding discs work?

A: When the disc is spun at high speed by a power tool, the abrasive grains grind down the material, removing it from the surface. The disc's design and the type of abrasive determine its effectiveness on different materials.

Q: What types of materials can grinding discs be used on?

A: Grinding discs are suitable for working on metals, stone, concrete, ceramics, and composite materials. The choice of disc depends on the specific material and the type of work being performed.

Q: What is the difference between a grinding disc and a cutting disc?

A: A grinding disc is thicker and used for material removal and surface preparation, whereas a cutting disc is thin and designed for cutting through materials.

Q: What safety measures should be taken when using grinding discs?

A: Always wear appropriate Personal Protective Equipment (PPE) such as eye protection, gloves, and hearing protection. Ensure the grinder is rated for the grinding disc's maximum speed and never exceed the speed rating.

Q: How are grinding discs measured?

A: Grinding discs are measured by their diameter, thickness, and the size of the arbor hole. Common diameters include 4", 4.5", 7", and 9", while thickness can vary depending on the application.

Q: How do you choose the right grinding disc for the job?

A: Consider the material being worked on, the desired outcome (smoothing, shaping, or material removal), and the power tool being used. Select a disc that is compatible with your tool and suitable for the material.

Q: What is the significance of the grinding disc's thickness?

A: A thicker disc can handle more aggressive grinding tasks and may be more durable, while a thinner disc is better for more precise work and less material removal.

Q: What is the difference between a coated and a depressed center grinding disc?

A: A coated grinding disc has abrasive grains on its surface, suitable for general grinding tasks. A depressed center grinding disc has a recess in the center, allowing it to fit more securely on the grinder and handle more aggressive work.

Q: How do you install a grinding disc on an angle grinder?

A: Align the arbor hole of the grinding disc with the spindle of the angle grinder, then secure it in place with a nut or a spanner wrench. Make sure it is tight and securely attached.

Q: Can grinding discs be sharpened?

A: Grinding discs are not designed to be sharpened. They are disposable and should be replaced once they are worn out or damaged.

Q: What is the lifespan of a grinding disc?

A: The lifespan of a grinding disc depends on factors such as the material being worked on, the grinding technique, and the quality of the disc. Higher quality discs will last longer under the same conditions.

Q: How do you store grinding discs?

A: Store grinding discs in a cool, dry place to prevent damage. Keep them away from moisture, direct sunlight, and extreme temperatures.

Q: What are the signs that a grinding disc needs to be replaced?

A: Replace a grinding disc when it is excessively worn, if it no longer grinds effectively, or if there are visible cracks or chips.

Q: Can grinding discs be used on a lathe?

A: Grinding discs are not designed for use on a lathe. Lathes are designed for turning operations, while grinding discs are used with angle grinders or similar power tools.

Q: What is the difference between a grinding disc and a flap disc?

A: A grinding disc is a solid disc with abrasive material, while a flap disc is made up of overlapping flaps of abrasive material, providing a more flexible and conformable surface for grinding.

Q: What precautions should be taken when handling a grinding disc?

A: Handle grinding discs with care. Avoid dropping them, as this can cause damage. Inspect the disc for cracks or defects before use.

Q: How do you know if a grinding disc is suitable for a particular type of metal?

A: Check the manufacturer's specifications or consult a professional. Different metals may require different types of abrasives or grit sizes to achieve the desired results.

Q: What are some common applications for grinding discs?

A: Grinding discs are used for a variety of applications including metal fabrication, welding preparation, surface smoothing, and the removal of burrs or rust. They are also used in the stone and concrete industries for shaping and smoothing.

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