PDC drill bits are classified into two types based on their base material: Matrix body and Steel body, but their manufacturing processes are drastically different. Steel body PDC bits are not limited by the strength of the cutting edges, have high crown strength, high brazing strength of the composite plates, are easy to repair after use, have a shorter production process, higher production efficiency, and lower production costs, offering more advantages than Matrix body PDC bits. Matrix body PDC bits are made by pressureless impregnation and sintering of cast tungsten carbide powder and impregnating material. The shape of the drill body is indirectly achieved through the shape of the mold. The mold consists of three parts: a bottom mold, a middle mold, and an upper mold. The design and machining of the middle and upper molds are relatively easy to achieve. However, the bottom mold is a solid with complex curved surface features. The crown shape parameters, cutting tooth position and direction parameters, and hydraulic structure parameters of the PDC drill bit are all achieved through the shape of the bottom mold. Therefore, the design and machining of the bottom mold is the most important part of mold design and machining; its design quality and machining accuracy directly affect the final performance of the drill bit. High-quality molds are one of the key factors in ensuring the quality of PDC drill bits.
Based on current customer feedback, steel body PDC bits are the main trend in the PDC bit market. Due to the development of modern industry, steel body PDC bits exhibit performance that is basically the same as matrix body PDC bits. Moreover, because matrix body PDC bits cause air pollution, steel body PDC bits currently dominate the market.
Post time: Feb-23-2026