Method for quick opening large-chamfer casting blank during cutting

• Main Authors: BAI ZHANLU, WANG YULONG, ZHU ZHIYUAN, ZHAO HAIQING, ZHAO JING, XIE CUIHONG, WANG ZHIGANG, SUN SHUNYI, ZHEN XINGANG
• Format: Patent
• Language: Chinese; English
• Published: 13.02.2013
• 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 relates to a method for quick opening a thick plate large-chamfer casting blank during cutting, and belongs to the technical field of plate blank cutting. The large-chamfer casting blank can be quickly opened and cut off by optimizing the cutting parameters of the casting blank, such as the preheat position and preheat time of a cutting gun, the cutting pressure of preheat oxygen, and cutting speed increment according to the characteristic of the large-chamfer casting blank. The method has the advantages that the casting blank can be quickly opened, time for cutting the casting blank off is saved, and the phenomena that an opening is formed on the casting blank, and equipment is damaged because gun returning steel flowers are splashed to a cutting vehicle can be avoided.