A steel track chain component (162, 164, 166, 168, 202, 204), such as a track bush (204), may be formed with a carburized portion (404), a hardfacing wire portion (412), and a core portion (410). The core portion 410 may be softer than the carburized portion 404, which may in turn be softer than the hardfacing wire portion 412. This configuration of various portions of the component (162, 164, 166, 168, 202, 204) may allow for relatively high wear resistance and toughness of the component (162, 164, 166, 168, 202, 204). The core portion 410 may be predominantly of a ferritic crystal structure, while the carburized portion 412 and the hardfacing wire portion 412 may include a martensite and/or austenite crystal structure. The carburized portion (412) may be formed by carburizing the track chain component (162, 164, 166, 168, 202, 204) in a heated and carbon-rich environment. The hardfacing wire portion (412) may be formed by welding a hardfacing wire alloy on at least a portion of the carburized portion (404).
诸如履带衬套(204)的钢履带链部件(162、164、166、168、202、204)可形成有渗碳部分(404)、耐磨堆焊焊丝部分(412)和芯部分(410)。芯部分410可以比渗碳部分404软,该渗碳部分404又可以比耐磨堆焊焊丝部分412软。部件(162、164、166、168、202、204)的各个部分的这种配置可以允许部件(162、164、166、168、202、204)的相对高的耐磨性以及韧性。芯部分410可以主要是铁素体晶体结构,而渗碳部分412和耐磨堆焊焊丝部分412可以包括马氏体和/或奥氏体晶体结构。渗碳部分(412)可以通过在加热和富含碳的环境中对履带链部件(162、164、166、168、202、204)进行渗碳而形成。耐磨堆焊焊丝部分(412)可以通过在渗碳部分(404)的至少一部分上焊接耐磨堆焊焊丝合金而形成。
Track chain component with hardfacing wire covering layer
具有耐磨堆焊焊丝覆盖层的履带链部件
2022-05-13
Patent
Elektronische Ressource
Chinesisch
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