Abstract

In this study, we experimentally tested slide bearings made of modified pressed wood (MPW), showing that a high probability of their failure occurs when the counterbody surface hardness is less than 50 HRC. For the first time, laboratory tests of antifriction properties of MPW bushings with counterbodies having various hardness of the contact surface were performed in order to predict the operating modes of friction units of machines and mechanisms. In experiments according to the “shaft–partial insert” scheme on a 2070 SMT-1 friction machine, 45, 45Kh, and 18KhGT-steel rollers were used as a counterbody. The hardened steel rollers were tempered to low, medium, and high temperatures in order to obtain various hardness of the contact surface. The pressed wood inserts were impregnated with MC-20 mineral aviation oil thickened with a high-molecular additive.

中文翻译：

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改性压制木材滑动轴承的抗摩擦特性

摘要

在这项研究中，我们通过实验测试了由改性压制木材（MPW）制成的滑动轴承，显示出当对接体表面硬度小于50 HRC时，发生滑动的可能性很高。为了预测机器和机械装置的摩擦单元的工作模式，首次进行了带有接触面硬度不同的沉头孔的MPW衬套的减摩性能的实验室测试。在2070 SMT-1摩擦机上按照“轴-部分插入”方案进行的实验中，使用45、45Kh和18KhGT钢制辊作为副体。将硬化的钢辊回火至低温，中温和高温，以获得不同硬度的接触面。