Research On Medium And Thick Plate Of High Strength Steel With Stud Welding Technology

In view of the welding of diffierent specification stud and different type steel plate,induction heating power source with ultrasonic frequency of WH-VI-50, arc stud weldingmachine of BMK-16i,BMH-22SV were used to do some research of stud welding withdifferent methods.The arc stud welding roaching of BMK-16i was used to do some welding experiment oflight-sized stud with the diameter less than 13mm. When the stud with the diameter of 8mmwelded, the protection of the molten pool from the atmosphere is necessary. When argonshield used, the intension of the welding jiont was enhanced 35% more than the jiontwithout protection. When the plate heated to 487℃, the affection of welding current to thequality of the stud welding jiont was weaken. Welding joint with high quality was gainedwhen the welding current adjusted in the range of 700～000A. The affection of weldingtime was prominence.The BMH-22SV stud weld maching was used to weld stud in largerer diameter. Faltyfusion, gas hole and oxygenation appears frequently. When the method of hybrid heatresource of induction heating power and arc combined, the weld defect of gas hole and faltyfusion could be avoid.In magnetfeld condition, the arc will be pulled to move in the direction of electromagneticforce, the arc will move arround the weld surface of stud. The fused bath will exhibitequality in the whole welded jiont.