A magnetic shielding composite friction and wear testing machine

Abstract

The invention provides a magnetically-shielded combined type friction-abrasion testing machine, which comprises a rack, a rotating mechanism, a horizontal adjusting platform, a reciprocating mechanism and a friction loading mechanism, wherein the rack consists of a bottom-layer platform, a middle-layer platform and a top-layer platform, and the middle-layer platform and the top-layer platform are positioned on the bottom-layer platform; the rotating mechanism is arranged on the middle-layer platform, the upper end of the rotating mechanism is connected with a rotating disc for placing samples, and a first magnetic shielding case is arranged at the outer peripheral side of the rotating disc; the horizontal adjusting platform is arranged on the middle-layer platform and arranged on one side of the rotating mechanism along a second direction, and the horizontal adjusting platform is provided with a turnplate seat capable of moving along the second direction; the reciprocating mechanism comprises a cylinder and a linear guide rail, the cylinder is arranged on the top-layer platform, a sample fixing seat is arranged on a slider of the linear guide rail, the linear guide rail and the horizontal adjusting platform are adjacent along a first direction, a second magnetic shielding case is arranged on the outer peripheral side of the linear guide rail, an extension rod of the cylinder is arranged on the second magnetic shielding case in a penetration manner and connected with the sample fixing seat and can drive the sample fixing seat to do reciprocating motion along the second direction; the friction loading mechanism consists of a support frame, a lifting platform and a loading assembly.

Description

technical field [0001] The invention belongs to the technical field of friction and wear testing machines, and in particular relates to a magnetic shielding compound friction and wear testing machine, which can simulate the rotation and reciprocating friction of samples, and monitor the friction and wear of samples under the condition of shielding the geomagnetic field. The changes of the surface magnetic field and temperature field during the wear process. Background technique [0002] A recent study in the tribology of materials reveals a nano-tribological phenomenon on the contact surface of materials. When ferromagnetic materials are subjected to friction and wear, the chemical properties of the physical surfaces of materials will change, that is, ferromagnetic materials will generate a spontaneous magnetic field. . In order to study and analyze the mechanism of friction and magnetization, it is necessary to conduct friction and wear experiments on metal materials. In ...

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Problems solved by technology

However, the above-mentioned testing machine has no magnetic shielding function, and the form of the friction pair is single, and the up and down positions cannot be adjusted. In the friction test, there are only several options for fixing the lead, the range of friction tests that can be simulated is limited, and the operability is poor; in addition, the above-mentioned testing machine cannot monitor the changes in the surface magnetic field and temperature field of the sample during the friction and wear process

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