Discount Abrasives

Abrasives are a material that have a higher degree of hardness, and are used to shape other materials by way of abrasive actions. Abrasives usually have a hardness of 7 or more on the Moh’s scale of hardness. They are used widely in industries for cutting and shaping parts and products, and are one of the key materials used in the manufacturing sector.

Previously, naturally occurring materials and minerals were used as abrasives; however, these have given way today to synthetic abrasives. Synthetic abrasives are more suitable for certain specific applications, but they are more costly than the naturally occurring abrasives. So if one is looking for cheaper abrasives to cut down costs, natural abrasives would be recommended, especially if you don’t have a highly specific requirement. Various naturally occurring abrasives like Calcite, Diamond dust, Emery, Novaculite, Pumice dust, Rouge, and Sand (sandpaper being one of the cheapest and most commonly used abrasive) can be used as cheaper alternatives to synthetic abrasives. Certain abrasives, like Zirconia Alumina, are very rare and difficult to obtain, and thus are costly. So if there is a specific requirement to use such abrasives, its synthetic versions (same material manufactured artificially, and not procured form the mineral) would be more cost effective. However, other synthetic abrasives like Borazon, Ceramic, Corundum, Dry Ice, Glass powder, and Silicon Carbide will turn out to be more costly than their naturally occurring counterparts. Nevertheless, at times such abrasives have to be used due to certain specific requirements.

When opting for discount abrasives, especially the naturally occurring ones, you should make sure that it will do the job that is required, and hence, such abrasives should be checked for certain criteria before ordering them:
Difference in hardness so as to cut quicker, or give the desired finish on certain hard materials.
Grain size, as bigger grit or grain tends to cut the material faster and deeper.
Adhesion between grains, as this will determine how fast the grains are eroded from the abrasive surface and the new grains exposed. This will help determine how long the abrasive will last for a particular job.
The force at contact, more force will cause faster abrasion.
Whether any coolant or lubricant is required, as this will determine if it will decrease friction, transfer heat, or create undesired stresses in a work piece.

Sand is one of the cheapest materials available that can be used as an abrasive. Sand blasting is one such technique, which makes the use of sand for abrasive action, and is quite cheap compared to other options. Sand blasting is used for shaping, smoothening, or cleaning a hard surface. Solid sand particles are forced across the surface at high speeds, which causes action that is similar to that of using sandpaper. However, it provides a better uniform finish, with no difficulties in working over crannies or corners.

The downside of using this technique is that it causes silicosis after long exposure to sand particles suspended in the air during the blasting process. However, using modern protective gear, and breathing equipment, makes the sandblasting process just as safe as any other.

Thus, it is evident that if you are looking for discount abrasives for more cost effective options, it is not only readily available, but is also safe. Although, the final choice of the abrasive will depend on many different factors, but if the job can be done by certain cost effective methods without hampering the quality, then go ahead, use them!

Industrial Abrasives

Abrasives are materials having a comparatively higher hardness and are used to shape other materials by grinding or abrasive action. These materials are used as loose grains, as grinding wheels, or as coated abrasives, coated on either cloth or paper (sandpaper being the most common example).

Abrasive products find a wide range of application in the industries including, but not limited to, grinding and polishing glass, cleaning and machining metals, cutting metals, glass, cement etc., grinding logs for paper pulp. Abrasives are also used to manufacture products like brake lining, non-slip flooring required in certain conditions, etc.

Abrasives are harder than the material that it is used to polish and this difference in hardness is what makes the abrasives work. Traditionally, various minerals were used as abrasives, typically those having hardness of 7 or more, on the Moh’s Scale of Hardness. Nowadays, many synthetic stones and other materials prepared artificially are used as abrasives in various applications. Diamond is a commonly used abrasive in various industrial applications, due to its high level of hardness. Various minerals that are used as abrasives are either crushed, or are already found in the powdered from, the grain size of which ranges from 1m to 2mm (1000micron=1mm).

Factors deciding how quickly a substance is abraded include:
Relative difference in hardness between two substances.
Grain size and its matrix- larger grains will cut faster as well as deeper.
The force at contact- more force will obviously mean more abrasion.
Type of lubricant or a coolant used.

Some of the naturally occurring abrasives are Calcite, Emery, Novaculite, Pumice, Rouge, and Sand. Some like Diamond and Zirconia Alumina are found in nature, but are also extensively manufactured synthetically. Other artificially prepared abrasives commonly used in industries are Borazon, Ceramic, Corundum, Dry Ice, Glass Powder, and Silicon Carbide.

While natural abrasives are often sold as dressed stones in the form of blocks, both naturally occurring as well as synthetic, abrasives are available in variety of shapes and sizes according to different use. These are usually bonded or coated abrasives, which includes blocks, belts, discs, wheels, sheets, rods, and loose grains. Grinding wheels are a type of abrasives that find a wide range of industrial applications, right from cutting, sharpening to shaping materials. Previously, such wheels used human power in the form of pedal or human operated cranks. However, now these comfortably work with the help of an electric motor. The high speed of motion imparted by such motors has necessitated the use of a coolant fuel for lowering of the resultant heat produced. However, many researchers suggest that such coolants or lubricants are more important to reduce the tensile stresses acting on the wheel.

The type of abrasive to be used for a particular work will be governed by the size, shape and the nature of the work piece, as well as the type of finishing desired.