Patent · US Expired

Inoculant alloy based on ferrosilicon or silicon and process for its preparation

US4643768A · kind A · utility

2Cited by

5References

6Claims

0Family size

Assignee

SKW Trostberg Aktiengesellschaft · DE

Inventors

Heinz Bruckmann · Tacherting, DE
Friedrich Wolfsgruber · Tacherting, DE
Ernst A. Weiser · Unterneukirchen, DE

Key dates

Filing date	Sep 10, 1985
Grant date	Feb 17, 1987
Priority date	—
Expiry date	Sep 10, 2005

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC22C35/005
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

An inoculant alloy based on ferrosilicon or silicon for the manufacture of cast iron with lamellar, compact or spheroidal graphite is described, this alloy comprising PA1 (a) between 0.1 and 10% of barium and/or zirconium, PA1 (b) less than 2% of aluminum and PA1 (c) 0.3% of calcium. This inoculant alloy is distinguished by particularly good suppression of the precipitation of carbide and by its preparation process which is industrially simple and thus has favorable costs.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.