目前国内用的喷涂喷焊用的粉末,大多数含有2.5～4％的硼,并要求含铁量很低,因而不能用硼铁来增硼,而用纯硼粉或硼镍粉压块方式加入,不仅价格昂贵,而且硼烧损大,回收率低。湖南省钢铁研究所粉末冶金组贯彻开门办所,自力更生的方针,在湖南铁合金厂的支持下,经过反复试验,采用铝热直接还原法试制出含硼20～40％的硼铬合金,并进行了小批量生产。此合金生产 Currently used spray spray powder, most of them contain 2.5 to 4% of boron, and requires a very low iron content, which can not use boron ferroboron to increase boron, but with pure boron or boron powder compact way Join, not only expensive, and burned boron loss, low recovery. Hunan Iron and Steel Institute PM Practice to open the door, self-reliance policy, with the support of Hunan ferroalloy plant, after repeated tests, using aluminum direct reduction method to produce a boron-containing boron 20% to 40%, and Small batch production. This alloy is produced