Study method for influences of air pressure intensity and currents to bead welding technology parameters

• Main Authors: CHEN ZHUOJUN, LEI JINHONG, WU JING, ZHOU QIUZHONG
• Format: Patent
• Language: Chinese; English
• Published: 10.01.2020
• Subjects: CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; SOLDERING OR UNSOLDERING; TRANSPORTING; WELDING; WORKING BY LASER BEAM

The invention discloses a study method for influences of air pressure intensity and currents to bead welding technology parameters. Dirt such as oil and rust on the surface of a to-be-welded workpieceare reduced before bead welding, and base metal is preheated before welding; and thirdly, a bead welding method includes that argon arc bead welding is adopted, a WSE-350 AC and DC pulse argon arc welding machine is used for putting SHQ605 onto 20CrMnTi steel in a bead welding manner, argon is adopted as the shielding gas for welding, the flow of the shielding gas is 20 L/min, the range of the argon pressure intensity is 8 MPa to 12 MPa, during welding, the welding currents are 30 A-110 A, and the welding currents are increased by 5 A. By means of the study method, the argon arc welding method is used for putting a SHQ605 welding rod onto the 20CrMnTi steel in the bead welding manner, hardness is made on a sample piece on a microhardness instrument, the hardness value is measured, different currents and argon pre