The 2000 grit sanding disc is a cutting tool. This is an abrasive cutting tool.
In the 2000 grit sanding disc, the function of the abrasive is the same as that of the saw. However, unlike saws that have teeth only on their edges, the abrasive particles of the 2000 grit sanding disc are distributed throughout the 2000 grit sanding disc. Thousands of hard and hard grains move on the workpiece to cut off tiny pieces of material.
Abrasive suppliers offer a wide range of products for a variety of grinding applications in metalworking. Choosing the wrong product can take a lot of time and money. This article describes some of the basic principles for choosing the best 2000 grit sanding disc.
2000 grit sanding disc and other bonded abrasives have two main components: the abrasive grains that are actually cut and the bonds that hold the particles together and support them as they are cut. The percentage of particles and bonds in the wheel and its spacing in the wheel determine the structure of the wheel.
The specific abrasive used in the 2000 grit sanding disc is selected based on how the 2000 grit sanding disc interacts with the working material. The ideal abrasive has the ability to maintain sharpness and reduce bluntness. When the passivation begins, the abrasive breaks and a new cutting point is formed.
Each type of abrasive is unique and has different hardness, strength, fracture toughness and impact resistance.
Alumina is the most commonly used abrasive in 2000 grit sanding disc. Abrasive carbon steel, alloy steel, high speed steel, malleable cast iron, wrought iron, bronze and similar metal abrasives are usually selected. There are many different types of alumina abrasives, each of which is specially manufactured and blended for a particular type of grinding operation. Each type of abrasive has its own name – usually consisting of letters and numbers. These names vary by manufacturer.
Zirconia alumina is another series of abrasives, each made of different percentages of alumina and zirconia. This combination produces a strong, durable abrasive that works well for a variety of steels and steel alloys in rough grinding applications such as cut-off operations. As with alumina, there are several different types of zirconia alumina to choose from.
Silicon Carbide is an abrasive used to grind grey iron, cold iron, brass, soft bronze and aluminum as well as stone, rubber and other non-ferrous materials.
Ceramic alumina is the latest major development in abrasives. This is a high purity grain produced by a gel sintering process. The result is that the abrasive can break at sub-micron levels at a controlled rate, creating thousands of new cutting points. This abrasive is extremely hard. It is primarily used for precision grinding of the most demanding steels and alloys. Abrasives are typically mixed with other abrasives in various percentages to optimize their performance in different applications and materials.
Once the grain is known, the next question is related to particle size. Each wheel has a number that indicates this characteristic. The grit size is the size of a single abrasive grain in the 2000 grit sanding disc. It corresponds to the number of openings per linear inch in the final screen size used to screen the grain. In other words, a higher number indicates that the mesh through which the grain passes is smaller. Lower numbers (for example 10, 16 or 24) indicate that the 2000 grit sanding disc is thicker. The coarser the grain, the larger the material size removed. The coarse grains are used for rapid removal of the blank, and finishing is not important. Higher numbers (eg 70, 100 and 180) are fine 2000 grit sanding disc. They are suitable for imparting a fine surface finish, a small contact area, and are suitable for hard, brittle materials.
Buying bonds
In order for the abrasive in the 2000 grit sanding disc to be effectively cut, the 2000 grit sanding disc must have a suitable bonding force. The binder is a material that holds the abrasive particles together so they can be cut efficiently. As the abrasive particles wear, the adhesive must also be abraded and discharged to expose new sharp abrasive particles.
Three main types of bonding are used in conventional 2000 grit sanding disc. Each type gives unique characteristics to the grinding characteristics of the 2000 grit sanding disc. The type of bond chosen depends on factors such as the working speed of the 2000 grit sanding disc, the type of grinding operation, the required precision and the material to be ground.
Most 2000 grit sanding disc are made of a glass bond that includes a carefully selected mixture of clays. The clay and the abrasive grains are melted into a molten glass state at a high temperature generated in a kiln for manufacturing a 2000 grit sanding disc. During the cooling process, the glass forms a span that attaches each grain to the adjacent grain and supports the grain during milling.
2000 grit sanding disc made of ceramic bond are very strong, strong and porous. They remove stock materials at high rates and grind them to precise requirements. They are not affected by changes in water, acid, oil or temperature.
Ceramic binders are very hard, but at the same time they are as brittle as glass. They are broken down by grinding pressure.
Some keys are made of organic matter. These bonds soften under the action of grinding heat. The most common type of organic bond is a resin-like bond made of synthetic resin. 2000 grit sanding disc with resin-based cement are a good choice for applications that require rapid removal of blanks and applications that require better finish. They are designed to operate at higher speeds and are commonly used in manufacturing workshops, foundries, 2000 grit sanding disc in billet shops, and sharpening and gluing of saws.
Another type of organic bond is rubber. A 2000 grit sanding disc made of a rubber bond has a smooth grinding action. Rubber bonding is often found in wheels that require high finish, such as ball bearings and roller bearing races. They are also commonly used in cutting wheels where burrs and burns must be kept to a minimum.
The bonding strength is specified in the grade of the 2000 grit sanding disc. If the span between each of the abrasive grains is very strong, and the grinding force that can be cleaved against the grinding force maintains the abrasive grains well, it can be said that the bond has a hard grade. If only a small amount of force is required to release the grain, it can be said that the 2000 grit sanding disc has a soft slope. The level or hardness of the wheel is determined by the relative amount of bonding in the 2000 grit sanding disc.
Hard-grade hubs can be used for longer hub life, for jobs on high-power machines, and for smaller or narrower contact areas. Soft wheels are used for quick removal of blanks for large area contact applications and for hard materials such as tool steels and carbides.
The wheel itself has a variety of shapes. The 2000 grit sanding disc products that people usually think of are straight wheels. The grinding surface (the part of the 2000 grit sanding disc used for machining) is located on the periphery of the straight 2000 grit sanding disc. A common variation of the straight wheel design is the concave wheel, which is so called because the center of the concave wheel is concave so that it can be mounted on the machine tool spindle flange assembly.
On some 2000 grit sanding discs, the cutting surface is located on the side of the 2000 grit sanding discl. These wheels are usually named after their unique shape, such as cylindrical wheels, cup wheels and dish wheels. Bonded abrasive segments of various shapes are sometimes assembled to form a continuous or intermittent side 2000 grit sanding disc. These products are called subdivisions. 2000 grit sanding disc with cutting faces on the sides are often used to grind cutting tools and other hard-to-reach surfaces.
Installed 2000 grit sanding discs are small 2000 grit sanding discs with special shapes, such as cones or plugs, which are permanently mounted on the steel mandrel. They are used in a variety of off-hand and precision internal grinding operations.
Tied together
In order to choose the 2000 grit sanding disc that best suits your current job, many factors must be considered. The first thing to consider is the material to be ground. This determines the type of abrasive you need in the 2000 grit sanding disc. For example, alumina or zirconia alumina should be used to grind steel and alloy steel. For ground cast iron, non-ferrous and non-metallic materials, choose a silicon carbide abrasive.
Hard, fragile materials usually require a fine grit and a soft 2000 grit sanding disc. The hard material prevents the penetration of the abrasive particles and makes them blunt quickly. Thus, the combination of finer grit and a softer grade can cause the abrasive particles to become dull and rupture, exposing fresh, sharp cutting points. On the other hand, for soft, ductile and easily permeable materials, coarse sand and hard grade 2000 grit sanding disc should be chosen.
The amount of stock removed is also a consideration. Coarse sand can remove blanks quickly because they have greater penetration and greater cutting forces. However, if the working material is difficult to penetrate, the 2000 grit sanding disc will be cut slightly faster because more cutting points can be processed.
2000 grit sanding disc with ceramic bonding can be cut quickly. If the amount of stock to be removed is small, or if the requirements for the topcoat are high, a resin, rubber or shellac adhesive should be chosen.
Another factor that affects 2000 grit sanding disc bond selection is the speed of the wheel in operation. Typically, vitrification 2000 grit sanding disc are used at speeds of less than 6,500 surface feet per minute. At higher speeds, the vitrified bond may break. Organic bonded wheels are typically selected between 6,500 and 9,500 surface feet per minute. Working at higher speeds often requires specially designed 2000 grit sanding disc for high speed grinding.
Under no circumstances should the safe operating speed displayed on the wheel or its blotter paper be exceeded. Can be specified in rpm or sfm.
The next factor to consider is the grinding contact area between the 2000 grit sanding disc and the workpiece. For wider contact areas, use coarse sand and soft grade wheels. This ensures a free, cool cutting action under the heavier load imposed by the surface size to be ground. Smaller grinding contact areas require higher 2000 grit sanding disc sizes and hardness levels to withstand greater unit pressures.
Next, consider the severity of the grinding action. This is defined as the pressure at which the 2000 grit sanding disc and workpiece are held together. A number of abrasives have been designed to withstand harsh grinding conditions when grinding steel and alloy steels.
The power of the grinding machine must also be considered. Generally, harder wheels should be used on more powerful machines. If the horsepower is less than the wheel diameter, use a softer wheel. If the horsepower is greater than the wheel diameter, choose a harder wheel.
Nursing and feeding
Appropriate precautions and protective measures must be taken for the handling, installation and use of the 2000 grit sanding disc.
They should always be stored to prevent shocks and bumps. Storage rooms should not be subject to drastic changes in temperature and humidity as they can damage the bonding of certain wheels.
Immediately after opening the package, inspect all new wheels to ensure they are not damaged during transport. All used wheels returned to the storage room should also be inspected.
The wheels should be handled with care to avoid falling and bumping as this may result in damage or breakage. The 2000 grit sanding disc should be transported to work without rolling. If the wheels are too heavy to be handled safely by hand, use a trolley with a cushion, truck or forklift to avoid damage.
Before installing a vitrified 2000 grit sanding disc, perform a ring test as described in the American National Standards Institute’s B7.1 Wheel Safety, Maintenance and Protection Safety Code. The ring test is designed to detect cracks on the wheels. Never use broken wheels.
A sensible precaution is to ensure that the spindle speed of the machine used does not exceed the maximum safe speed of the 2000 grit sanding disc.
Always use a 2000 grit sanding disc with a suitable center hole size and freely fit on the spindle. Do not use excessive force. Never try to change the center hole. Use a pair of paired, clean, recessed flanges that are at least one-third the diameter of the wheel. The flange bearing surface must be flat and free from burrs or dirt buildup.
Only tighten the spindle nut enough to securely secure the wheel without over tightening. If installing the steering wheel, look for the arrow marked on the steering 2000 grit sanding disc and make sure it points in the direction of the spindle rotation.
Before operating the machine, make sure that all 2000 grit sanding disc and machine guards are in place and that all covers are closed. Once the wheel is secured and the shield is installed, turn the machine on, retract it, run it at working speed for at least one minute, and start grinding.
Grind only on the surface of the straight concrete grinding discs for angle grinder. Grind only on the sides of the cylinder, cup or segmented wheel. Gently bring the grinding into contact without collision or gouging. Do not force the grinding to avoid a significant deceleration of the motor or heat of the workpiece. The machine ammeter is a good indicator of the correct performance.
If the wheel breaks during use, double check the machine to make sure the hood and shield are not damaged. Also, check the flanges, spindles and mounting nuts to ensure they are not bent, bouncing or otherwise damaged.
System analysis
The 2000 grit sanding disc is an integral part of the engineering system and consists of 2000 grit sanding discs, machine tools, working materials and operating factors. Every factor affects all other factors. Therefore, the shop that wants to optimize the grinding performance will choose the 2000 grit sanding disc that best fits all of these other components in the process.