The research results show that , from the viewpoint of second phase morphologies , there exist quite differences between the grain - type materials ( such as wc / bcu brazing deposit material , wrs1000 and 1zt tungsten carbide strengthening overlaying material , as well as the wear - resistant material of polymer adhesive coating etc . ) , and the aggregation - type as well as dispersion - type ones ( such as zg35simn , wrd - 1 and khc - k2 depositing material ) in the wear - resistance and sand slurry abrasion mechanism . the sand slurry abrasion mechanisms are brought forward , of new wear - resistant materials with the features of grain - type second phase morphologies 研究发现，与聚合型、弥散型第二相的材料(如zg35simn 、 wrd ? 1和khc ? k2熔敷材料等)相比，颗粒型第二相的材料(如wc bcu钎焊熔敷耐磨材料、 wrs1000型耐磨材料、 1zt碳化钨颗粒增强熔敷材料及ktc ? 1耐磨胶粘涂层材料等)在耐磨性能和磨损机理等方面均有不同，总结提出了以“颗粒型第二相”为特征的耐磨新材料泥沙磨损机理。
Some popularly concerned hot problems and fast developed techniques in present nondestructive testing field were introduced , such as on - line monitoring for pipe laying , gas pipeline and embedding pipes , inspection for the adhesive coating of composite material , imaging techniques and signal processing 摘要介绍当前无损检测领域几项快速发展的并受人普遍关注的热点问题和技术，如输油、输气管道和地下管网的在线监测、复合材料粘接层的检测、成像技术以及信号处理。
Based on the technical requirements of manufacture , application and repair of the pump shell and cutter piece of the cutterhead pipeline dredge , put forward are the re - manufacture three principles on easily damaged workpieces of dredge engineering . with the inter - clamped structures on the pump liners , the gradient wear - resisting design on the cutter piece , and the new techniques in the process of re - manufacture , new wear - resistant materials , including high - cr alloy , overlaying and brazing deposits , and polymer adhesive coatings have been successfully applied to the re - manufacture dredge pump shell and cutter piece . the application results show that their wear - resistant lifetimes and the dredging profits have been increased remarkably 根据绞吸挖泥船泥泵绞刀的制造、使用和修复性能要求，提出了疏浚工程易损件再制造三原则；采用泥泵内衬互锁结构、绞刀梯度化耐磨设计和工艺再制造新技术，将高铬合金耐磨材料、熔敷耐磨材料及其复合材料和高分子耐磨胶粘涂层材料成功地应用于再制造泥泵壳和绞刀片上，显著提高了泥泵壳和绞刀的耐磨寿命和挖泥船的疏浚效益。
With the induction depositing process especially , as well as the overlaying deposit and the adhesive coating process for wear resistance , in consideration of the material manufacture and application , some types of new wear - resistant materials , including metallic materials , their composites and polymers are designed and developed . the research results on wear - resistant properties , microstructures and worn morphologies show that these materials possess their own characteristics , present the excellent and synthetic properties 特别运用感应熔覆法以及堆焊覆层法和耐磨胶粘涂层方法，并从材料的加工应用考虑，设计研制了多种类型的金属及其复合材料和高分子等耐磨新材料，对这些材料的耐磨性能、微观组织和磨损形貌的研究表明，它们各具特色，具有优异的综合性能。
