Abstract

A test procedure has been developed that models the wear of a material at friction against timber with abrasive particles impregnated into it. The procedure considers the kind and grain structure of an abrasive, timber species, technique of impregnating timber with abrasive particles, and testing configuration, temperature, and modes. The building up of the lateral surfaces of roller thorns with electrodes UONI-13/NZH and powder wire PP-Np-30Х4G2М is a more expedient method to make them more durable. It is shown that the grade 30 steel wear is characterized by the plastic straining of micro-volumes in the surface layer in the presence of individual marks and scratches, whereas the buildup wear is attended only by elastoplastic straining. The influence of such factors, as contact pressure, sliding speed, test temperature, and quartzy particle grain structure on the wear resistance of the studied surfacings is revealed. It is noted that the wear resistance of buildups UONI-13/NJ and PP-NP-30X4G2M for various test conditions is approximately equal to and 2.5–3 times as high as that of grade 30 steel; however, the preferable option for practical use on feed rollers is UONI-13/NJ due to its enhanced anticorrosion properties.

中文翻译：

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锯木厂设备运输辊的耐用性提高

摘要

已经开发出一种测试程序，该程序模拟了材料与木材之间的摩擦力以及磨料中所含磨料的磨损。该程序考虑了磨料的种类和纹理结构，木材种类，用磨料颗粒浸渍木材的技术以及测试配置，温度和模式。用电极UONI-13 / NZH和粉末焊丝PP-Np-30Х4G2М构造辊刺的侧面是一种更耐用的方法。结果表明，30级钢的磨损特征是表层中存在单个痕迹和划痕时，微小体积的塑性应变，而堆积磨损仅由弹塑性应变引起。这些因素的影响，例如接触压力，滑动速度，测试温度，揭示了石英颗粒晶粒结构对所研究堆焊层耐磨性的影响。值得注意的是，在各种测试条件下，UONI-13 / NJ和PP-NP-30X4G2M的堆积物的耐磨性大约是30级钢的2.5-3倍。然而，由于其增强的防腐性能，在送料辊上实际使用的最佳选择是UONI-13 / NJ。