Repair welding procedure for qg-e class HSLA cast steel QG&E级低合金高强铸钢的焊修工艺
ZT SeriesUse and characteristic : Are composed by a driving frame and a driven frame, uses in supporting and the welding garden shape simplified form class work piece. ZT系列用途和特点:由一台主动架和一台从动架组成,用于支承和焊接园形简体类工件。
Research of Plasma Welding Used for Weld the Urea Class Stainless Steel Lining of Urea Reactor 等离子弧焊焊接尿素合成塔不锈钢衬里的试验研究
Methods 20 patients whose first mandibular molars were extracted were involved in this study, using Edgewise appliance, welding hook in mesiolingual band, cooperating II class traction, the molar space were closed in sliding. 方法对20例第一磨牙缺失的病例,采用Edgewise矫治技术,带环近中点焊舌钮或自制拉钩,适当配合II类牵引,滑动关闭磨牙间隙。
It must be to do annealing treatment for eliminating strees and whole temper treatment after the welding. The weld and surface quality must be to achieve 2 class level. 焊后分别进行去应力退火和整体回火处理,使焊补焊缝及表面质量达到Ⅱ级。