A Research Of Magnetism-Control Rotating Arc Seam Tracking Sensor

With the steady growth of economy and the constant changing in current worldstructure, domestic industries in engineering mechanics, aviation, shipbuilding,railways, and trains are developing faster than ever before, which have drived thefast-growing of hi-techs in these industries. Welding techniques play a vital role in thedevelopment. New welding methods, special welding material, various welding forms,and practical welding process are flourishing. Therefore, it is urgent to find out aneffective, energy-saving, user-friendly automatic welding method to promote thedevelopment in welding techniques and economy. This thesis is designed to make aresearch on the automatic seam tracking technique for the design ofmagnetism-control rotating arc seam tracking system. The main contents areillustrated below:1. A review of the researches on magnetism-control seam tracking sensorBased on the previous studies of automatic welding techniques and related fields,the techniques of magnetism-control arc seam sensor are summarized. So far, noprevious study concerning magnetism-control rotating arc sensor has been found.2. The designing of a magnetism-control rotating arc seam tracking sensor,which is the key techniques for seam trackingA method of magnetism-control arc rotating is proposed and described accordingto the basic principles of magnetism-control arc and the sensor design. Based on thistheory, a magnetism-control arc seam tracking sensor is designed, of which thestructure is analyzed and the key techniques for the problems are illustrated.3. A thermal-analysis and experiment is conducted for its practicability inweldingOn the basis of the finite element analysis and ANSYS, a study of thermalsteadiness of this sensor is conducted through simulation from the perspective ofthermal field. The influence of heat on the sensor is shown in the process. The effectof water cooling on the thermal steadiness of the sensor is verified throughexperiment as well. All together serves as evidence for the practicability andsteadiness of the sensor.4. A thermal-magnetic coupled-field way of analysis of magnetism-control arcseam tracking sensor based on ANSYS Through lots of experiments, it is found that the thermal field has a big influenceon magnetic field, which deserves further research. A thermal-magnetic coupled-fieldway of analysis of magnetism-control arc seam tracking sensor based on ANSYS isthen proposed. The coefficient is defined, indicating the thermal-influence onmagnetism of magnetism-control arc seam tracking sensor. The feasibility of thismethod is confirmed through the comparison of the results from experiments andsimulation. This clarifies the influence of thermal field on the magnetism field of thesensor. An optimization method for the sensor is proposed, which lays a solidfoundation for realizing the magnetism-control arc seam tracking system.