阿尔维迪ESP第一套薄板坯无头铸轧的成果

意大利阿尔维迪公司使用微型轧机配单流铸机生产板材,并通过采用ISP专利技术实现年产板材130万吨。结合薄板坯连铸连轧工艺的经验并经过几年来的分期改造,终于获得一条性能稳定的优质热轧带钢生产线,该生产线促成投资采用ESP技术。因为阿尔维迪ESP线总长度为180 m,布置紧凑和投资成本、生产成本较低。ESP线采用单流铸机,在第一阶段年生产能力为200万吨,在增加铸流后可将生产能力提高为300万吨。ESP工艺能源消耗、水消耗非常低。ESP是无头轧制并具备生产厚度为0.8 mm及以下的超薄热轧板的能力,因此后续的冷轧工艺不再是必要工序。该ESP设备是世界上第一例在4.5分钟内连续完成由钢水到热轧卷的生产线,并成为日后ESP样板厂。本文目的是提供相关技术数据和第一条无头铸轧线的生产成果。

ARVEDI ESP FIRST THIN SLAB ENDLESS CASTING AND ROLLING RESULTS

The Italian steel producer Acciaieria Arvedi SpA operates a minimill for flat rolled products with a single casting line（maximum with 1300 mm）,with an annual output of 1.3 million tones per year of flat products using ISP technology,patented by Arvedi.Following this positive experience with its continuous thin slab casting and rolling process,improved in several stages over the years and resulting in a stable production unit of high quality hot rolled strip,it was decided to invest in a new line adopting endless strip production（ESP） technology,also patented by Arvedi.Owing to its highly compact layout with conventional thin slab casting and direct rolling plants.Production costs are also noticeably lower than those of other thin slab plants and also of the ISP plant already operating in Cremona.Productivity of the ESP plant,based on a single casting line,will be 2 million tones per year for the first phase and a possible increase in mass flow from the caster may take capacity up to 3 million tones per year.Total energy and water consumption of the Arvedi ESP process is very low on the final product,energy consumption.Owing to endless rolling operations,the production of strip with uniform and repeatable mechanical properties will be possible along the entire strip with and length and with the line＇s ability to produce ultrathin hot rolled strip gauges of 0.8 mm（and lower）,a subsequent cold rolling process will no longer be necessary for many strip applications.The Arvedi ESP plant is the first example of fully continuous production from liquid steel to hot rolled coil on the downcoiler in 4～5 min,and the Cremona plant is the reference plant（master plant） for sales of future ESP lines.The aim of this presentation is to provide data relative to the new plant and the first production results of the endless and plant supplier of the new plant.