Sharp Abrasives

Palghar, Mumbai, Maharashtra

Abrasives:  Letter symbols are used to identify three main groups of abrasives normally used in the grinding wheels.They are A for Aluminum Oxide  C for Silicon Carbide Z for Aluminum Zirconium Prefix to these letters indicate some particular variations in these groups. Grain Size :  Means strength of bonding of a grinding wheel : in other words hardness denoted by English Alphabets Starting from D (Softest) to Z (hardest). Very soft DFFG Soft HIJK Medium LMNO Hard PQRST Very hard UVWXYZ. Selecting of gift:  Finer grit worse finish, softer material, light stock removal, uninterrupted surface and small contact area Coarser grit worse finish, softer material, heavy stock removal, form surface and larger contact area. Bond Type :  Types of Bonds are denoted by following letters.  V = Vitrified, R = Rubber, S = Silicate B = Resinoid, E = Shellac, O = Oxychloried

Firetech  Reinforced Depressed Centre Grinding Discs   are excellently fabricated depressed center grinding discs that are exclusively available in varying diameters of (100mm to 230mm) in different thickness. These are made of High quality raw material and hence these are able to withstand extreme loads offered by the grinding application with utmost safety. Firetech Reinforced Depressed Center Grinding Discs are resin bonded abrasive wheels. Resin bonded grinding wheels are specially reinforced with fiber glass reinforcements. We, at Sharp Abrasives, are specialized for customizing Reinforced Depressed Centre Grinding Discs. These  Reinforced Depressed Centre Grinding Discs  feature depressed centers, and may also be known as raised hub wheels. The flange/lock nut is recessed within the wheel. Aluminum Oxide  abrasive is suitable for cutting and grinding ferrous metals. Ceramic abrasive  is suitable for fast cutting on almost all materials, including stainless steel, mild steel, and aerospace alloys. Diamond abrasive  is suitable for most metals, including steel, sheet metal, stainless steel, rebar, cast-iron, aluminum, and other non-ferrous metals. Silicon Carbide abrasive  is suitable for cutting nonferrous materials such as concrete and masonry, as well as aluminum. Zirconium Aluminum Oxide abrasive  is suitable for aggressive material removal on ferrous metals, gray iron, stainless steel, nonferrous materials, aluminum, and pipeline.   Features: Fiber glass reinforced cold pressed depressed centre wheels Capable of running from 13500 to 16000 SFPM Ensures a high production ratio with no chances of breakage Full performance and maximum endurance Application: Weld – dressing Cutting off smoothing of Casting Can be applied on various kind of Steel and non-ferrous materials

Firetech  Reinforced Cut-off Wheels  are reinforced and designed for resisting any breakage caused by heavy cross bending. These resin bonded wheels can be used for any operation where work is not clamped and deepness of cut is on the higher side. Firetech abrasive grinding wheels are available in different full sizes and can be customized for size, grade and more for large quantity. These  Reinforced Cut-off Wheels , also known as parting wheels, are self-sharpening wheels that are thin in width. They are often used in the construction industry for cutting reinforcement bars (rebar), protruding bolts or anything that needs quick removal or trimming. Most handymen would recognize an angle grinder and the discs they use. Initially specially designed Cutters were used to for similar applications. But they need often grinding and shaping which is time consuming and costly process. These  Reinforced Cut-off Disc  has replaced these cutter as cost effective solutions and No need to grind as same to cutter. Time saving is the most effective benefit by these Cut Off discs.   Features: Fiber glass reinforced cold pressed depressed centre wheels Safely used on portable cut off machine up to speed of 13500 SFPM Universally free cutting and resistance to fracture Lasting performance Application: Major Industrial and Construction fields. Can be applied on bars, structural steel, tubing, sheet metal etc. Can be applied on various kind of Steel and non-ferrous materials

A resin bonded abrasive is a grinding or cutting tool composed of abrasives grains which are held tightly together by a bonding agent and typically reinforced with a woven material. Within the bonded abrasives category are grinding and cutting wheels, as well as "stones" in a variety of shapes and size.   Three Main Components of Resinoid Bonded Abrasives are as follows: Abrasives Grains:  Abrasives grains are the Main component of grinding wheels. These are the cutting tools glued in wheels. There are different abrasive but most commonly used are Aluminum Oxide and Silicon Carbide, Alumina Zirconium. Aluminum oxide is used to grind materials such an hard steel Aluminum oxide it the most common abrasive used in grinding wheels. Silicon carbide grinding wheels is used to grind the low tensile strength materials, such an aluminum, brass and softer bronzes, it is also used on most non-ferrous metals. Alumina zirconium is a very fine, dense crystalline grain which can be used for rugged stock removal.   Bonding Agent:  The Bonding agent that hold the grains together determines the resistance of the wheel. There are six types of bonding agents. In the Resinoid bond, synthetic resins are used to unite the grains of the abrasive. A resinoid wheel produces a higher surface finish, and should be run at a higher surface feet per minute.   Reinforcement:  The reinforcement material provides extra strength to use the wheel at miximum RPMs and withstand lateral pressure that is appiled during use. It also increase the life of wheel remarkably.     How Abrasives work? The function of abrasives is to remove material. The wheel is made up of two components, the abrasives and the bond. The abrasives acts like the cutter and the bond is the glue holding the abrasives grains together. Since the abrasive is harder than the material being ground, each grain acts like a cutting tool.

We at Sharp Abrasives offer a wide range of Firetech  Straight grinding wheels ; resin bonded grinding wheels and more. These are by far the most common style of wheel and can be found on bench or pedestal grinders. They are used on the periphery only and therefore produce a slightly concave surface (hollow ground) on the part. This can be used to advantage on many tools such as chisels. These resin-bonded abrasive products have higher tensile strength as compared to the vitrified bonded abrasive products and therefore these  Straight grinding wheels  can withstand heavy grinding pressure and mechanical shocks. The wheels are generally made from a composite material consisting of coarse-particle aggregate pressed and bonded together by a cementing matrix (called the bond in grinding wheel terminology) to form a solid, circular shape, Various profiles and cross sections are available depending on the intended usage for the wheel. They may also be made from a solid steel or aluminium disc with particles bonded to the surface. Today most grinding wheels are artificial composites made with artificial aggregates, but the history of grinding wheels began with natural composite stones, such as those used for millstones.  We at Sharp Abrasives manufacture these  Straight grinding wheels  in a precise and tightly controlled process, due not only to the inherent safety risks of a spinning disc, but also the composition and uniformity required to prevent that disc from exploding due to the high stresses produced on rotation. Grinding wheels are consumables, although the life span can vary widely depending on the use case, from less than a day to many years. As the wheel cuts, it periodically releases individual grains of abrasive, typically because they grow dull and the increased drag pulls them out of the bond. Fresh grains are exposed in this wear process, which begin the next cycle. The rate of wear in this process is usually very predictable for a given application, and is necessary for good performance. Straight Wheels are generally used for cylindrical, centreless, and surface grinding operations. Wheels of this form vary greatly in size, the diameter and width of face naturally depending upon the class of work for which is used and the size and power of the grinding machine. Dressing Grinding wheels are self-sharpening to a small degree; for optimal use they may be dressed and trued by the use of wheel or grinding dressers. Dressing the wheel refers to removing the current layer of abrasive, so that a fresh and sharp surface is exposed to the work surface. Trueing the wheel makes the grinding surface parallel to the grinding table or other reference plane, so that the entire grinding wheel is even and produces an accurate surface.   Features: Higher tensile strength as compared to the vitrified bonded abrasive products Capable of running up to 9500 SFPM Easy performance Application: The primary function of these straight grinding wheels is for stock-removal such as excessive weld etc. Can be applied on bar stock, structural steel, tubing, sheet metal etc. Can be applied on various kind of Steel and non-ferrous materials