The choice of binder should be considered in terms of grinding methods, speed of use and surface processing requirements.
The most commonly used dicing sheet binders are ceramic binder (V) and resin binder (B).
The ceramic bond is an inorganic binder, which has stable chemical properties, good heat resistance, good corrosion resistance and high porosity. The
6 inch es cutting disc made of the bond has high grinding efficiency and low wear, and can better maintain the cutting piece. Geometry, the widest range of applications. Cutting piece high-tech WeChat: 2105551090 is suitable for grinding ordinary carbon steel, alloy steel, stainless steel, cast iron, hard alloy, non-ferrous metal, etc. However, the ceramic bond cutting sheet is brittle and cannot be subjected to severe vibration. Generally only use at speeds up to 35 m / s. .
The resin binder is an organic binder. The binder produced by the binder has high strength, certain elasticity, low heat resistance, good self-sharpness, simple production and short cycle time. Cutting blades and very thin cutting blades that work at speeds above 50 m/s can be manufactured. Its application range is second only to ceramic bonding agents, and it is widely used in rough grinding, rough grinding, cutting and free grinding, such as grinding steel ingots, casting burrs and so on. It can manufacture high-speed, high-gloss cutting blades, heavy-duty, cutting and cutting discs with special requirements.
The choice of organization mainly considers the pressure, grinding method and workpiece material of the workpiece.
Tissue refers to the percentage of the volume of the dicing disc in the dicing sheet. The division level of the cutting piece is divided into 62% of the abrasive grain volume percentage of "0", the abrasive grain volume is reduced by 2%, the tissue is increased by the number one, and so on, which is divided into 15 numbers. The larger the number, the looser the organization.
The tightly-cut cutting piece can grind a better surface of the workpiece, and the loosely-cut cutting piece can ensure the wear debris during the grinding process and avoid the blockage of the cutting piece due to the large gap. Generally, when coarsely grinding and grinding softer metals, the cutting piece is easy to be clogged, and the loose cutting piece should be used; in the case of forming grinding and precision grinding, in order to maintain the geometry of the cutting piece and obtain better roughness, the comparison should be made. Tightly organized cutting discs; when grinding machine tool guides and cemented carbide tools, in order to reduce the thermal deformation of the workpiece and avoid burn ****s, it is advisable to use loosely-cut cutting pieces; materials with high heat sensitivity, non-ferrous metals and non-metallic materials should be used. A cutting piece larger than 12# tissue. Metal processing WeChat, the content is good, it is worthy of attention.
The choice of shape and size should be selected based on the conditions of the grinding machine and the shape of the workpiece.
Commonly used cutting sheets are in the form of flat cutting sheets (P), single-sided concave cutting sheets (PDA), double-sided concave cutting sheets (PSA), sheet cutting sheets (PB), cylindrical cutting sheets (N), bowl-shaped cutting sheets ( BW), dish-shaped first cutting piece (D1), and the like.
The shape and size of the cutting blades that can be used with each type of grinding machine have a certain range. Where possible, the outer diameter of the cutting piece should be selected as large as possible to increase the linear speed of the cutting piece, to obtain higher productivity and surface quality of the workpiece, and the same effect can be obtained by increasing the width of the cutting piece. .
The current national standard cutting piece writing sequence: cutting piece code, size (outer diameter × thickness × aperture), abrasive particles, particle size, hardness, tissue, bonding agent, maximum line speed.
Example: P400×150×203A60L5B35
