The tribological performance of ball bushing brass guide bushing comes from the synergy of its composite structure. The component consists of a brass matrix and embedded rolling elements, and the crystal orientation arrangement between the material interfaces forms a low shear resistance surface. The solid solution strengthening network of zinc elements in the brass matrix provides a stable support framework, and its grain boundary diffusion channels can effectively absorb micro friction particles. The distribution pattern of rolling elements in ball bushing brass guide bushing transforms sliding contact into multi-node rolling contact, and the local contact stress is discretized and redistributed.
The microporous oil storage structure formed by solid phase sintering on the surface of the brass matrix can maintain the continuity of the boundary lubrication film. The optimized design of the rolling element motion trajectory in the ball bushing brass guide bushing reduces the adhesion tendency of the sliding pair and avoids the occurrence of cold welding between metals. The matching characteristics of the thermal expansion coefficient of the material ensure the stability of the fit clearance under different temperature conditions, which is the basic condition for the continuous smooth operation of the ball bushing brass guide bushing. The gradient hardness distribution design of the inner wall of the ball bushing brass guide bushing reduces the friction coefficient while maintaining the necessary anti-deformation ability.
The vibration energy is converted into lattice vibration dissipation under the damping effect of the brass matrix, reducing the harmonic interference transmitted by the mechanical system. The dynamic balance of the surface passivation layer maintains the chemical inertness of the friction pair interface, which is the key factor for the ball bushing brass guide bushing to maintain a low friction state for a long time.
