Guizhou First Abrasives Co., Ltd. is a professional company dedicated to the research , production ,sales and services of resin bonded cutting wheels and grinding wheels. Form 2009 to 2023,we continue expanding our factory,star having 2 machines until now 35 machines.Our output ,nowadays,keep more than300000pcs/daily. As a high-tech enterprises ,we will continue to increase investment in technology research and development, introduce advanced equipment, improve product testing methods, and focus on the production of high-end products while developing new products to meet market demand.
Why Choose US
Our Factory
Founded in 2009, Guizhou First Abrasives Co., Ltd. is a professional company dedicated to the research, production, sales and services of resin bonded cutting wheels and grinding wheels. The company is located in Shuichang Industrial Park, Longli County, Guizhou Province, and covers an area of over 60000 m2, with a workforce of more than 300 employees.
Production Market
After more than a decade of development, the company's sales channels have expanded across the country, and its products are now exported to 20 countries and regions including Southeast Asia, Europe, America, and the Middle East.
Our Product
Powerbear is our conpany's best-selling brand in the word.We supply resin-bonded grinding wheel and flap disc.
Resin-boned grinding wheel: Involve cutting disc for metal,cutting disc for inox,2in1 cutting disc and grinding disc.
Flap disc: Invovle Aluminum Oxide Flap Disc,Calcined Aluminum Flap Disc,Zirconia Flap Disc.
Our Certificate
In 2019, the company became a national high-tech enterprise with an annual production capacity of 150 million pieces of cutting and grinding wheels. With advanced technology equipment and strong technical expertise, experienced production, and comprehensive testing methods, the company has obtained ISO9001 quality system certification and 21 unility model patent certificate.
Our high-performance polishing grinding discs are carefully designed to unleash the full potential of your angle grinder and provide high-quality polishing and grinding results. Designed for professional craftsmen and DIY enthusiasts, these discs offer convenience for a wide range of applications.
Grinding Disc for Stainless Steel
Grinding disc for stainless steel and metal,2 nets,black paper cover long life time.
125*6*22.23mm+Black Paper Grinding Disc Grinding for Metal and Inox,No Block,Long Life Time
This polishing disc makes improving the surface quality and dimensional accuracy of your workpiece easy. The compact grain of the polishing disc consists of many small grinding particles that have been bonded together to form a large agglomerate, so that the abrasive grain remains anchored in the tool for longer and it does not clog up. This allows the desired surface result to be achieved more quickly. The polishing disc can be used in both wet and dry grinding and requires no additional grinding paste. Due to their long tool life and a good edge-fray resistance, it is perfectly suited for automated processes such as cylindrical polishing of tubes or marbling of high-alloyed steel plates. The flexible, lightweight, stable and elastic glass fabric carrier of the polishing disc allows for exceptional surface results. The disc is highly resistant to breakage and generates little vibration when working. Combined with its easy handling, it is ideal for manual use.
Advantages of Polishing Grinding Disc
Produce a smooth and flat surface
The metal grinding disc ensures precise metal cutting. They are applications that can handle tight tolerances and high precision.
The main advantage of the large diameter metal grinding disc to remove metal from the surface of the workpiece.
They have the ability to grind and corrode workpieces to help you achieve a smooth and accurate surface.
Cereal dress
These non-reinforced abrasive cutting wheels have a myriad of sub-micron cut particles. They dress themselves when they are tired.
Usually, matt grain will fall off, resulting in sharp edges.
Each time they are used continuously, they will continuously show a fresh cutting edge. It ensures that you don't have to worry about maintenance.
Wide range of uses
In addition to rods and extracts, metal grinding discs can also be used to cut tubes and dielectric materials.
The metal grinding disc works fast
The metal grinding disc works faster. Compared with other precision cutting methods.
You can even bundle the materials you need to cut to save on the cost of high-volume cutting.
Anatomy of a Metal Grinding Wheel
A metal grinding wheel is a composite tool comprised of abrasive grains held together by a bonding material. Understanding its anatomy is crucial for maximizing its efficiency.
Abrasive Grains
Typically made of aluminum oxide, silicon carbide, or a blend of these materials, the abrasive grains determine the wheel's cutting ability and durability.
Bonding Material
The bonding material holds the abrasive grains in place and influences the wheel's strength and resilience. Resin, vitrified, and metal are common bonding agents.
Structure
Grinding wheels can have an open or closed structure, impacting their cutting efficiency. An open structure is more porous, allowing for cooler cutting, while a closed structure offers better surface finish.
Material composition
The first consideration when choosing a grinding disc for metal is the material composition. Grinding discs are typically made from various abrasive materials, such as aluminum oxide, zirconia alumina, silicon carbide, or ceramic alumina. Each abrasive material has different characteristics, such as hardness, durability, and suitability for specific metals. For general-purpose metal grinding, aluminum oxide discs are commonly used due to their versatility and affordability.
Grit size
The grit size of a grinding disc determines its abrasive coarseness. Lower grit numbers indicate a coarser abrasive surface, which is suitable for heavy material removal and grinding rough surfaces. Higher grit numbers, on the other hand, produce a finer finish and are ideal for polishing and fine detail work. When selecting a grinding disc, consider the nature of your metalworking project to determine the appropriate grit size for achieving the desired results.
Disc shape and size
Grinding discs come in various shapes and sizes, including flat discs, depressed center discs, and cutoff wheels. The choice of disc shape depends on the application and the type of grinder being used. For most metal grinding applications, flat discs or depressed center discs are commonly used. It is important to select the right disc size that matches your grinder's specifications to ensure compatibility and safety.
Disc durability
Durability is a critical factor, especially when dealing with demanding metal grinding tasks. Look for grinding discs with reinforced construction, such as fiberglass mesh or resin bonding, which enhances their strength and longevity. High-quality discs are less likely to break or wear out quickly, resulting in longer tool life and reduced downtime.
Safety features
Working with grinding discs involves potential hazards, so prioritizing safety is essential. Opt for discs with safety features like reinforced outer guards or specially designed discs for reduced vibration and improved control. Always adhere to the manufacturer's guidelines regarding safety precautions, such as using appropriate personal protective equipment (ppe) like safety glasses, gloves, and a face shield.
Choose the right grinding wheel
Different grinding wheels are designed for different materials and tasks. Make sure you choose the right grinding wheel for the job to avoid damaging the workpiece and to ensure that you are grinding effectively.
Inspect the grinding wheel
Before using the grinding wheel, inspect it carefully for any cracks or chips. If you find any, replace the grinding wheel to avoid any potential hazards.
Wear personal protective equipment
Grinding can create sparks and dust, which can be hazardous to your eyes and skin. Make sure you wear protective eye gear and a dust mask to protect yourself.
Secure the workpiece
Make sure the workpiece is securely clamped or held in place before starting to grind. This will help prevent the workpiece from moving or shifting during grinding, which can cause damage.
Make sure the grinder is in good condition
Before using the grinder, make sure it is in good condition. Check for any damage to the housing, cord, or switch, and make sure the grinder runs smoothly.
Use the correct speed
Different grinding wheels are designed to be used at different speeds. Make sure you are using the correct speed for the grinding wheel you are using to avoid damaging the workpiece and to ensure that you are grinding effectively.
Check the grinding angle
Make sure you are using the correct grinding angle to avoid damaging the workpiece and to ensure that you are grinding effectively.
Start with a coarse grit
If you are using a multi-grit grinding wheel, start with a coarse grit to remove any rough spots on the workpiece. Then, progress to finer grits to finish the grinding process.
Use the correct technique
Make sure you are using the correct grinding technique for the task at hand. If you are unsure about the correct technique, consult a professional or the manufacturer's instructions.
Keep the grinder clean
Clean the grinder after each use to ensure that it runs smoothly and effectively the next time you use it.
Materials of Metric Roller Chain Sprocket
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.
Where Are Polishing Grinding Disc Used
Manufacturing and Metalworking
In the realm of manufacturing and metalworking, precision is non-negotiable. Grinding wheels are the go-to tools for shaping metal components with utmost accuracy. They are used to create smooth surfaces, achieve precise dimensions, and refine intricate shapes. From aerospace components to medical implants, grinding wheels are the artisans behind the scenes, ensuring that every piece meets stringent quality standards.
Construction and Infrastructure
Construction sites are a cacophony of activity, and grinding wheels are the unsung heroes in this bustling domain. They are used to cut, grind, and shape materials like concrete, stone, and masonry. Whether it's creating precise openings for electrical outlets or smoothing rough surfaces for aesthetics, grinding wheels are indispensable tools for builders and contractors.
Automotive Engineering
The automotive industry relies on grinding wheels for manufacturing critical components. From engine parts to gears, these wheels ensure the perfect fit and finish. In auto repair shops, they're used to resurface brake rotors and engine blocks, restoring vehicles to peak performance. The precise nature of grinding makes it a cornerstone of the automotive world.
Woodworking and Carpentry
Grinding wheels aren't limited to metal and concrete; they are vital tools in the woodworking and carpentry trades. They help sharpen and maintain cutting tools like chisels and planer blades, ensuring clean cuts and precise joinery. Additionally, grinding wheels are used for shaping wooden pieces, from furniture legs to intricate carvings, adding finesse to woodworking projects.
How to Replace the Polishing Grinding Disc
Unplug the grinder. Disconnect from power when changing discs.
Remove the existing disc using the pin spanner to remove the spindle nut. A pin spanner is a tool with two projecting pins that locate in the two holes in the spindle nut. The spindle nut is the round nut that screws onto the grinder's spindle outside of the disc, to hold it in position.
Place the new disc on the grinder's spindle, replacing the old disc.
A 1mm cutting disc is flat and can be placed on the spindle with either face upward - they do not have a direction of cut. Ensure the disc is correctly located so that its bore is properly aligned and fitted to the spindle and the disc is flat and snug.
Now replace the spindle lock nut, with the flat face against the disc. This may be the opposite way round from the way it was originally, if the old disc was a grinding disc: A grinding disc is locked with the flat face of the lock nut outward and the stepped face inward; a cutting disc is locked with the flat face of the lock nut inward, against the disc.
With a 1mm disc, tighten by hand only, do not use the pin spanner. Pressing the lock button in, which is on the other side of the head of the grinder, firmly turn the spindle nut until it is hand tight and firm. If you do not have sufficient hand strength to lock the nut down firmly, then use the pin spanner - but lightly and carefully. There is absolutely no need to apply any force, because the direction of spin tightens the locknut.
Check that the disc guard is correctly aligned for the desired work position. This guard is the metal shield outside the disc. The guard can be rotated around the grinder head, and has a cut-out section that is aligned with the work. If the guard cannot be rotated easily then loosen the lock bolt that holds it in position. The guard is considered important in grinding jobs due to the extensive red-hot metal and stone splatter, but it can be removed for intricate cutting jobs if the operator has sufficient experience to use the tool safely. The guard can only be removed with no disc on the grinder.
Put on a full-face mask, put on some thin gloves if doing small and intricate work (welding gloves or heavy work gloves are too thick for use with a 4.5" grinder and will make the work too difficult, increase the risk of the tool slipping from the hands, and are much more likely to be cut by the grinder disc - thinner gloves are safer and better), plug in the grinder, and spin it up to test it.
In use, never be looking at the edge of a grinder disc. The disc throws debris off in line with the edge of the disc.The disc can shatter, and chunks of stone flying at significant speed can result, since the 4.5" grinder spins the disc at over 10,000rpm.
Never use a cutting disc to thin out the material, this is the job of a grinding disc. A regular grinding disc is 4 to 6mm thick, a regular cutting disc is 3mm thick, and thinner cutting discs come at 2.5mm, 2mm, 1.8mm, 1.5mm, 1mm, and 0.8mm thick. These discs are comparatively fragile - use them carefully, keep the cutting pressure carefully aligned with the disc body, and apply it smoothly.
Always attach the grinder's pin spanner to its power cord, next to the plug, so that the pin spanner cannot be lost. However half of the grinders you come across will have missing pin spanners - In this case remove a disc by having a partner hold the grinder on a flat surface with the disc facing upward. They press in the lock button (probably underneath, in this position). You strike the spindle nut with a light hammer applied to a screwdriver placed at an angle in one of the pin location holes. The thread is a standard right-hand thread, so that you will strike it anti-clockwise to loosen the nut.
The direction of rotation tightens up the spindle nut automatically. You may on occasion tighten the nut on a 9" grinder but that is a different matter, the work is far heavier. A 4 1/2" grinder or 'peanut grinder' just needs a hand-tight lock nut. Do the nut up firmly by hand, try to turn the disc on the spindle, if it slips then apply more hand pressure to the lock nut. You must depress the spindle locking button while tightening the lock nut. If your hands are weak then by all means use the spanner - but almost anyone can do these nuts up sufficiently by hand. The spin tightens the nut, so you'll find it much harder to get it off than put it on.
FAQ
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