优质快速切割是近几年发展起来的一项新技术。它比一般的旧式割嘴切割速度能提高40～100％,切口质量表面光洁度可以达到▽4,切割厚度200毫米以下的钢板切口宽度仅1.2～3.5毫水。由于它具有这些突出的效果,因此它引起了国内外的重视,迫切希望得到推广使用。推广这一新技术的关键是超音速割嘴的制造供应问题。我厂针对用电铸法生产割嘴难度大、周期 High-quality fast cutting is a new technology developed in recent years. Cutting speed than the average old cutting can be increased 40 ~ 100%, the quality of the incision surface finish can reach ▽ 4, the cutting thickness of 200 mm below the width of only 1.2 to 3.5 milligrams of steel cutting. Because of its outstanding effects, it has drawn great attention both at home and abroad and is eager to promote it. The key to promoting this new technology is the manufacturing and supply of supersonic nozzles. I plant for the use of electrocast production of cutting nozzle difficult, cycle