In the cutting work of concrete pavement with short pouring time or renovation of old road, if the road cutting blade "drops teeth", it will lead to low processing efficiency and even affect the personal safety of processing workers. Due to production reasons or use reasons, saw blades will "drop teeth". At present, the country has not issued clear and specific regulations on the problems and safety performance of diamond saw blades and tools in use. Industry experts and experienced workers from SANG diamond saw blade manufacturers This paper summarizes the relevant analysis and solutions on the problem of "drop teeth" of road cutting blades.

Based on years of market sales experience, SANG diamond saw blade manufacturers have learned from the most troublesome problems reported by customers that there are two main factors that affect the safety performance of road cutting blades: First, the outer scallop of the saw blade head is not Cleaning, resulting in weak welding between the cutter head and the base. 2. During the sintering process of the saw blade, the process parameters are not well controlled, and the sintering temperature is low, which makes the welding not firm, and the matrix itself has low strength and is easy to break. Summarizing these factors, however, customers who have purchased SANG saw blades rarely have such problems bothering them, and it is also important to choose a product with high quality and high performance.

Then, knowing the factors that affect the safety performance of road cutting blades, how to effectively solve this problem? Industry experts pointed out that it can be considered from two aspects of "two optimizations": First, optimize the design. In the matrix formula, raw material powder with low oxygen content can be used, and the welding strength of the matrix and the matrix can be improved by changing the shape of the outer circle of the saw blade base "swallow tooth". Second, optimize the process. In the manufacture of the substrate, the "copper plating" process is used; the use of cold pressing----hot sintering process, hot pressing----fusion welding process (ie laser welding process) can form a very strong weld, which will Large road cutting blades reduce the occurrence of "drop teeth" problems.

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