Development of Chipper Blades and Analysis of Causes of High Speed Annealing
The chipper blade is a special tool for the production of wood chips. The product is mainly made of high-quality die steel. It is a kind of high-speed machining tool. It is widely used in paper making, pulping, planing, medium and high density fiberboard manufacturing, straw plant, bio-power generation, Wood chip processing and other industries and manufacturers of production use, the products mainly cut wood, bamboo, board and wood materials and harvested fuelwood surplus materials.
The chipper blade is a machine cutter that was first produced and used by forestry developed countries. The processing has been improved over the years, and the chipping and wood chip screening processing can be completed at the same time, which greatly improves the productivity of wood chipping. Nowadays, there are two types of chippers in the domestic market: fixed and mobile. The fixed type is mostly used in factories; the mobile type is generally used in forest areas. It is mainly used for cutting wood materials with a diameter of less than 120 mm and used as raw material for fiberboard and pulp. The pass rate of cutting chips can reach about 97%.
During the cutting of the chipper, due to the high-speed force, the blade of the chipper and the contact portion of the wood generate high heat, and the temperature is gradually diffused to the entire blade and the body in the form of heat conduction. Therefore, if the heat resistance of the tool is not good, the continuous heat transfer will cause the shape of the tool and the thermophysical properties, which will cause the blade to anneal, ultimately affecting the effect and service life of the chip. Therefore, when processing hard wood, heat-resistant steel H13 can be used, which can prolong the service life of the tool and prevent the phenomenon of high-temperature annealing, which has been widely recognized by users. In recent years, China's woodworking industry has grown at a relatively high speed. The chipper has become the focus of future development, and it has also brought better development to the domestic chipper blade industry, which has made the domestic woodworking industry obtain a certain international. The status and influence mark that the development of the domestic woodworking industry has also reached a new level. This is the result of huge demand in the domestic market and the inevitable result of the implementation of technological upgrading in the industry.
