Multi-layer composite artificial diamond hard alloy wear-resistant part and manufacturing method thereof

Abstract

The invention relates to a multi-layer composite artificial diamond hard alloy wear-resistant part and a manufacturing method thereof.The multi-layer composite artificial diamond hard alloy wear-resistant part comprises a cylindrical main body, the main body is provided with an axis, the main body is provided with two end faces which are oppositely arranged in the axial direction, and both end faces are formed of hard alloys; the multi-layer composite artificial diamond hard alloy wear-resistant part further comprises two artificial diamond layers correspondinglyarranged on the two end faces,the two artificial diamond layers each comprise a first face and a second face, and the first face and the second face are oppositely arranged;the first face and the end faces are identical in terms of shape and size and fixedly connected in a mutually superimposing mode; the second face is provided with an extending face extending in the direction away from the main body, and the extending face approaches to the axle while being away from the main body. The multi-layer composite artificial diamond hard alloy wear-resistant partis uniform in wear resistance.

Description

technical field [0001] The invention relates to the field of synthetic diamond hard alloy composite sheets, in particular to a multilayer composite synthetic diamond hard alloy wear-resistant part and a manufacturing method thereof. Background technique [0002] The fixed-tooth drill bit used in oil drilling will generate a large torque during the drilling process, which will limit the drilling speed and service life of the drill bit to a large extent. In order to reduce the torque generated by the drill bit during the drilling process, it is usually installed Bearings with rolling elements reduce the torque generated by the drill bit through the rolling and support of the rolling elements. At present, rolling elements made of alloy are usually used, but the alloy material has poor wear resistance and short service life, which makes the drilling cost high. Therefore, it is necessary to develop a rolling element with higher wear resistance and impact resistance, thereby impr...

AI Technical Summary

Problems solved by technology

However, most of the existing synthetic diamond carbide compacts are a structure in which a single-layer diamond is combined with a single-layer alloy matrix. If this synthetic diamond carbide compact is used as a rolling element, the alloy part is more wear-resistant than the diamond part. The alloy part will be worn quickly, but the diamond part can maintain good integrity. After the alloy part wears out, the composite sheet will become a cone as a whole, which will cause the drill bit to vibrate and affect the drilling work.

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