Investigation of the effect of boron carbide-doped diamond sockets on cutting performance in granite cutting
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ORIGINAL PAPER
Investigation of the effect of boron carbide-doped diamond sockets on cutting performance in granite cutting Gökhan Ekincioğlu 1 & Raşit Altındağ 2 Received: 2 November 2018 / Accepted: 6 February 2019 # Saudi Society for Geosciences 2019
Abstract In the study, boron carbide was added to the matrix in different ratios in order to increase the wear resistance of the socket matrix and to strengthen the bond at the matrix interface with the diamond. Under the same sintering conditions, eight different tool sockets were produced. One of them is boron carbide non-doped (0% B4C) reference socket. The others are boron carbide-doped sockets in different ratios (1-2-3-4-5-6-7% B4C). The produced sockets were welded around a 350-mm saw to produce circular saws. In the study, firstly, the metallographic properties of the boron carbide non-doped (0% B4C) and boron carbide-doped (1-23-4-5-6-7% B4C) sockets such as theoretical densities, unit volume weights, porosity, Knoop hardness (HK), and weight wear loss were determined. Cutting experiments were then carried out (under constant cutting conditions) with eight different circular saws on a single hard stone species with a homogeneous structure. At the end of cutting experiments, the power consumption, specific cutting energy, specific abrasion, and noise levels of each saw were determined. Cutting performance of boron carbide non-doped and doped circular saws has been investigated taking into account the metallographic properties of the sockets. At the end of the study, the lowest power consumption and specific cutting energy consumption due to high porosity and low hardness were obtained at 7% B4C-doped sockets. It was determined that the lowest specific abrasion value was found in sockets with 4% B4C doped due to the low porosity and high hardness value, and the lowest noise level was found in 1% B4C-doped sockets. Keywords Diamond sockets . Boron carbide . Granite . Specific cutting energy . Specific abrasion . Noise
Introduction Natural stone blocks produced from quarries come to marble processing plants where they are presented to the market as semi-finished or finished products. Circular saws are used for sizing of natural stones in the factory. The cost of cutting among the cost items constitutes a significant share. The most important factor in cutting cost is energy and saw cost. The energy consumption value in the cutting process varies depending on the rock and machine parameters. Physical and Editorial handling: Murat Karakus * Gökhan Ekincioğlu [email protected] Raşit Altındağ [email protected] 1
Kaman Vocational School Department of Drilling Technology, Ahi Evran University, 40100 Kirşehir, Turkey
2
Faculty of Engineering Department of Mining Engineering, Süleyman Demirel University, Isparta, Turkey
mechanical properties of the rock and hard mineral affect the cutting process. In addition, parameters such as cutting speed, cut depth of saw, structure of socket, and the power of the machine affect the specific cutting energy, spe
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