混合保护气体成分对不锈钢气保焊焊缝成形的影响

本文研究不锈钢熔化极气保焊保护气体成分与比例不同对焊缝成形的影响,分析了不同气体的优缺点,为合理选用保护气体成分、获得优良的焊缝成形提供了有力的依据。     

矿用重工车架及液压支架Q690D高强钢焊接工艺应用浅谈

通过对Q690D低合金高强钢母材性能及相匹配的ER80-G高强焊丝试验及其实际应用的总结,制定有效合理的焊接制造工艺规程,为Q690D高强钢焊接生产提供了技术支持。     

基于PTR2000的自重构机器人通信系统设计

文章根据自重构机器人的特点和通信要求,基于PTR2000无线Modem构建了自重构机器人通信系统,完成了通信系统各模块的硬件、软件以及相应通信协议的设计。采用CSMA/CD技术设计了通信系统信道竞争方法,制定了相应通信协议,有效地提高通信系统的可靠性和通信效率。     

检验聚乙烯管道焊接

聚乙烯(PE)管道焊接快速,操作简单容易掌握,但实用的检测方法和合格判定也是目前PE管道施工的一个瓶颈.本文对此问题并结合近实际工作中积累的经验,做出了对PE管道焊缝检验的方法,供大家参考.     

闸门焊接中常见缺陷的成因和预防措施

闸门焊接是保证闸门密性和强度的关键。文章详细介绍了闸门焊接中常见缺陷的成因,并提出了预防措施。     

半挂车纵梁焊接中的缺陷成因和修复方法

半挂车具有载重量大、装载空间大、运输量大等优点,被广泛用于长途货运和港口码头集装箱运输。半挂车的左右纵梁是其重要的构成部分,在进行左、右纵梁的拼装焊接时,要重点做好对接接头施工质量的控制。针对半挂车在载物后纵梁发生拉裂的情况,从焊接工艺角度谈其成因,并介绍修复方法。     

电阻点焊参数的分析和总结

文章对在汽车车身上应用最广泛的电阻点焊的焊接参数进行研究,结合遇到的各种焊点质量问题,在实际生产过程中总结经验,分析各焊接参数对焊点质量的影响及解决措施。     

浅谈不锈钢复合钢板储罐焊接工艺

目前很多化工原料储罐为节约成本,将不锈钢储罐设计成不锈钢和碳钢复合板储罐.做好复合板储罐的焊接工作是施工的核心工艺.     

某新建钢结构厂房安装及焊接施工控制探讨

文章结合浙江某工程实例,阐述了钢结构重型工业厂房安装、焊接顺序及工艺流程,且探讨了施工要点与质量控制措施.     

Service robots and perceived discrimination in tourism and hospitality

This study explores the influences of the incorporation of service robots in the service delivery systems of tourism and hospitality companies on the perceived discrimination of tourists and tourism employees. In doing so, a conceptual framework is proposed to explain the relationships between robots-based service delivery systems in tourism and hospitality (e.g., fully robotised and mixed service delivery systems) and discrimination. This paper demonstrates that although service robots may be advantageous in eliminating/mitigating perceived discrimination (from employees to tourists, tourists to tourists, tourists to employees, employer/employee to employee), using robots can also create or aggravate perceived discrimination. Though this study is the first attempt on the subject and presents beneficial knowledge for tourism and hospitality service providers and service robot designers, future empirical studies could shed more light on the relationship between robots-based service delivery systems and discrimination in the tourism and hospitality context.