Ads by Google
The pick is the most important accessories of coal mining machinery and driving machinery, mainly used for engineering excavation such as coal mining and tunnel, tunnel, ground trenching and so on, and applying to cutting solid coefficient of not more than 8 of coal and gangue.
Traditional coal picks were made of steel body welding with tungsten carbide cutting tooth, which has simple structure, and very convenient to produce. When mining in soft rock or pure coal strata, can meet the working requirements, while when mining in the hard rock strata, the cutter’s service life will be too short to support, as the wear resistance of cemented tungsten carbide is insufficient. Also the footage will slow down, the frequent replacement of cutting teeth increased downtime, which caused low efficiency of excavation,.
PDC coal pick use polycrystalline diamond compact (PDC) cutters to take the place of tungsten carbide cutting teeth. Diamond is known as the highest hardness material, and a PDC cutter is made of the cutting layer, which is a mixed combination of numerous small diamond particles with binder, and the tungsten carbide substrate sintering under high temperature and high pressure, has high strength, high hardness, high wear resistance, impact resistance and superfine self-sharpening. With excellent properties, the newly PDC coal pick can be applied in coal seam and rock mining better all.
Coal pick models are mainly based on the hardness of coal mine, sizes of coal pick seats and other factors, mostly as: U62, U47, U84, U85, U82, U92, U94, U95, S100, S120, S135, S150, S170 and so on, special types can be ordered for quantitative production.
Coal Cutter Picks