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宝钢的连铸厂房天车轨道采用Qu100型重型钢轨(化学成分C0.64～0.77,Si0.13～0.28,Mn0.050,P0.040)制造,其重量88.96kg/m。制造过程中,以焊接代替了传统的鱼尾板联接,通过模拟试验和多次试焊操作,制定了手工电弧焊焊接工艺,并一次获得成功。 1.焊前准备及焊接工艺在焊前先用火焰切割加工坡口(各部分坡口形式见下图),然后再用角向砂轮打磨光滑。预热温度为300～350℃,预热范围为对
Baosteel’s Caster Crane track is made of Qu100 heavy rail with a chemical composition of C0.64 ~ 0.77, Si0.13 ~ 0.28, Mn0.050, P0.040, and weighs 88.96kg / m. In the manufacturing process, welding instead of the traditional fish plate connection, through the simulation test and several trial welding operation, to develop a manual arc welding process, and a success. 1. Welding Preparation and Welding Process Before welding, flame cutting beveling (each part bevel form see below), and then polished with a smooth angle grinding wheel. Preheat temperature is 300 ~ 350 ℃, preheating range is right