公开(公告)号：US3857702A

公开(公告)日：1974-12-31

申请号：US19232971

申请日：1971-10-26

Applicant: SCM CORP

Inventor： CORBETT P

IPC: C22B9/18 ,  C22D7/00

CPC classification number: C22B9/18

Abstract: An improved electroslag refining (ESR) flux composition and process for making same are shown. The instant ESR flux compositions are made from particulate batch materials providing at least alumina, a fluoride and alkaline earth metal oxide, including calcium oxide, by the process described to yield a product exhibiting a substantially uniform fusion characteristic and to be substantially free of contamination from outside sources. The improvement in process comprises subjecting a substantially homogeneous mixture of batch materials, advantageously pelletized, to heat reaction at a temperature short of their complete fusion and in the range of about 1,900*2,400* F, generally most suitably until the free calcium oxide in the resulting product is below about 1 1/2 %.

Abstract translation: 显示了改进的电渣精炼（ESR）助焊剂组合物及其制备方法。 瞬时ESR助焊剂组合物由颗粒状批料材料制成，其通过所述方法提供至少氧化铝，氟化物和碱土金属氧化物（包括氧化钙），以产生显示出基本上均匀的熔融特性并且基本上不含污染 外部来源。 改进方法包括使基本上均匀的批料的混合物，有利地造粒，在不到完全熔化的温度下加热反应，并且在约1900--2400°F的范围内，通常最合适地直到游离氧化钙 所得产物低于约11/2％。