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Abstract of the main contents of the thesis: With the continuous development of science and technology, the application of non-metallic hard and brittle materials such as silicon materials, sapphire, engineering ceramics, optical glass and gemstones in space technology, machinery industry, petrochemical industry, construction and other fields The more and the requirements for the dimensional and shape accuracy of parts made from these materials are increasing. Since the mid-1990s, wire saw cutting has been widely used in single crystal silicon chips due to its narrow slit, uniform thickness and low warpage. Wire saws are divided into two types: free abrasives and fixed abrasives. Free abrasive wire cutting is less efficient and is not conducive to the processing of harder materials, but it is stable in the field of industrial cutting, and still accounts for most of the market in modern wafer cutting. The fixed abrasive wire saw refers to the diamond wire saw, which has the advantages of high cutting efficiency, high hardness material processing, and the market prospect is broad. The movement of the wire during the processing of the free abrasive and the fixed abrasive wire saw is mostly reciprocating. Because the wire saw needs to be reversed, and the wire is thin, the speed of the wire saw is low (about 10~15m/s), which brings two problems: First, it is difficult to give full play to the superior performance of the diamond abrasive grain; Second, the surface of the material processing has traces of reversal, which affects the surface integrity of the processing. A toroidal diamond wire saw is a flexible cutting tool made by consolidating diamond particles on a wire substrate in various ways. Well Diamond Wire Saw has been manufacturing and selling several types of circular diamond wire saws for decades, with speeds up to 20 m/s. The research on the circular diamond wire saw has been carried out in the past ten years in China. There are 0.8mm 65Mn cold drawn steel wire, which is welded into a ring shape by tungsten gas argon arc welding; some use stainless steel wire, the piano wire is welded by electric resistance butt welding, and then the welding point is heat treated to improve the resistance of the welded joint. Pull strength. After the steel wire is welded into a ring shape, the diamond particles need to be uniformly consolidated to the surface by electroplating or the like to form a ring-shaped diamond wire saw. It has been reported in the literature that the use of circular diamond wire saws to cut stone, silicon germanium, silicon carbide, ceramics, etc., has yielded many research results, but it is still relatively rare in domestic industrial applications. The main reason is the service life and import of domestic circular diamond wire saws. The products are far apart, and the cutting line speed is not high, only ten meters per second. The above text is selected from the "Circular Diamond Wire Saw Application Research", which is included in the "2012 China Superhard Materials Technology Development Forum Proceedings". Flap Wheels with shaft are made of multiple abrasive sheets attached to a core for fabricating, deburring, cleaning, polishing, and finishing jobs in metalworking applications. The sheets wear away during jobs, constantly exposing fresh abrasive coating to provide an even finish. Each grit flap comes in contact with the work piece at a slightly different angle, which prevents scratches. Because abrasive flap wheels conform to the shape of the surface material, they are commonly used to finish complex shapes and tight contours on a work piece. Flap wheels attach to grinders, drills, impact wrenches,or handheld rotary tools. They are either pre-mounted on a central hub, or unmounted for attaching to a compatible arbor.
Suitable for grinding the inner hole and camber of all kinds of metal and non-metal materials, select the suitable size of flap wheel with shaft for grinding. Remove burrs, rust, metal (plastic) and other surface grinding, internal and outter surface grinding, the grinding before painting, etc.Polishing, deburring, and removal of pits, burrs, and scratches. Remove parting lines and provide a uniform scratch pattern on all metals. The 1/4 inch stem allows for easy mounting on a die grinder or right angle die grinder.
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