Granite block cutter wear breakage study

Stone is widely used in building decoration and manufacturing sectors, with the increasing people's material life, the demand for special-shaped stone products is also growing. Shaped stone products generally refers to a rectangular plate products in addition to all other stone products. Shaped stone products production is characterized by variety, small batch production orders, this production features also make processing equipment and tools to face new challenges. Through the introduction and self-development, our country shaped stone processing equipment has basically reached the international advanced level. Currently, high-power, flexible, agile, intelligent advanced equipment (such as CNC machining centers, etc.) have been used in domestic products production and processing of stone shaped them.

Three key factors to achieve efficient processing of granite shaped face is the quality of the diamond forming tools, excellent machine performance and reasonable process. But in the special-shaped stone products processing still exist in the two outstanding issues: low efficiency, high cost, and diamond tools is a key processing costs and efficiency of the decision. Due to efficient processing of granite shaped face is that high-speed, large depth of cut, fast-forward to the realization that there is more intense friction between the diamond tools and granite, tool wear faster. Domestic and foreign scholars sawing stone diamond tools, diamond particles and a binder wear other aspects of the in-depth research, but also formed a theoretical basis, but currently working on the wear mechanism of granite shaped surface forming tool study less. Research and efficient processing of forming a diamond grinding tool breakage law on the formulation of rational and efficient process to further improve the molding tool durability and service life, optimize tool structure and manufacturing process parameters, reduce processing costs are important. In this paper, diamond shaped milling Qilu red, green granite Jinan quarter-circular shaped surface process as the research object, a broken tool grinding system were studied.

Under the efficient processing conditions, the analysis of experimental data obtained by variation of the molding tool grinding breakage, has been empirical formula wear different regions studied microscopic and macroscopic wear characteristics and wear mechanism of diamond tools.

(1) study the grinding tool breakage macroscopic morphology were analyzed molding tool wear in different regions by the amount of change research tool sectional diameter. Analyzes the impact of macro-worn granite block cutter to remove the amount of material characteristics and different macro-wear. The macro-abrasion tool is divided into four stages, namely the rapid wear of the stage, mixing wear stage, stable phase, accelerated wear stage;

(2) Through observation, found microscopic particles of diamond grinding damaged form is: polished, local caving, micro-crushing, crushing and macro-off;

(3) Failure Mechanism grinding diamond particles into the adhesive wear, abrasive wear, chemical wear, fatigue damage, impact damage five main forms;

(4) proposed for efficient processing of granite shaped surface with diamond shaped cutter design.

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