型钢轨

According to equivalent circuit of the main welding circuit, a mathematic model was derived for maximum output power of theК-type alternative current rail flash butt welding machines. Based on the model, a high efficiency welding procedure was proposed, and the control program was designed.

针对目前国内大量使用的К型交流钢轨闪光焊机，根据焊接主回路等效电路建立了最大功率输出和高效焊接控制的数学模型，编制了过程控制程序。

Approval;Approved organizations;Bend testing;Butt welding;Definition;Definitions;Design;Dimensions;Electric welding;Flash welding;Inspection;Materials;Metal sections;Order indications;Performance tests;Permanent ways;Profile;Quality;Rail joints;Rails;Railway applications;Railway rails;Railways;Resistance welding;Sections;Specification;Steel welding;Steels;Suitability;Testing;Tracks;Travel ways;Vignol rail;Weldability;Welded joints;Welding;Welding engineering;Welding equipment;Welding processes;Weldings

中文主题词认可；受批准组织；弯曲测试；对接焊；定义；设计；尺寸；电焊；闪光焊；检验；材料；金属型材；顺序示度；性能试验；永存性铁路；轮廓；质量；钢轨接头；钢轨；铁路设施；铁路钢轨；铁路；电阻焊接；型材；规范；钢件焊接；钢；适宜性；测试；轨道；旅行线路；丁字形铁轨；可焊性；焊接接头；焊接；焊接工程；焊接设备；焊接工艺；焊接法

Aiming at the engineering problem that K welding machine is used to weld PD3 60kg/m rail during welding production at present, the quality of the joint falls short of the standard of TB/T1632-91 because of the objection of grey-spots in the welding joint, this paper analyses the element which influence the welding joint quality in detail from the stability of flash of the accelerating step of the rail, finds out the relationship between the stability of flash-butt welding and the quality of rail joint, provides the measure for controlling the quality of rail welding and some gist for establishing perfect controlling system of welding joint quality

针对目前焊轨生产中采用K型焊机焊接PD3 60kg/m钢轨，接头灰斑缺陷多，性能难以达到部颁标准要求的工程问题，对材质、焊接电压、焊接工艺对接头质量的影响进行研究，并从钢轨焊接加速烧化阶段的闪光稳定性入手，详细分析了影响接头质量的因素，找出了钢轨闪光焊稳定性与质量的关系，提出了控制钢轨焊接质量的措施，为建立完善的焊接质量控制体系提供了依据。

It is considered that the formation mechanism of long pitch wear corrugations is the duplication and accumulation of uneven wear of rail tread during the course of wheelset slip-stick vibrations.

认为磨损型长波波磨的成因是，轮对粘滑振动造成的钢轨不均匀磨损的重复和累加效应。

This paper discusses design and realizable methods of remote test output interface from logical design angle.

本文从逻辑设计的角度讨论遥测输出接口的设计及实现方法。

This also 星体投射plies to buildings, structures and geological features.

这也适用于建筑物和地质特征。