SU590357A1 - Alloy for steel alloying and deoxidation - Google Patents

Description

one

The invention relates to the field of metallurgy, in particular to alloys intended for simultaneous deoxidation and alloying of steel.

Known alloy for deoxidation and alloying of steel of the following composition, weight. %: Tungsten55-75

Silicon15-25

Iron Else 1

However, such an alloy has a relatively high melting point (1580 ° C), which prevents its use for alloying steel in a ladle.

The aim of the invention is to reduce the melting temperature of the alloy, increase the use of the alloyed, etc. elements and uniform distribution of tungsten in the alloyed metal.

This is achieved by the fact that the proposed alloy additionally contains manganese in the following ratio of components, weight. %:

30-55

0.3-10.0

25-50

Rest

Example. The proposed alloy is obtained from Chiatura manganese concentrate, Grade II, swept the weft product of the penetration of scheelite concentrate (with a content of UOZ 48.9%) and quartzite. The cobalt serves as a reducing agent in the carbon-thermal process, and a high-percentage silico-manganese in the silicothermic process. The resulting strength you contain the following related components, weight. %: molybdenum 1-3; carbon 0.1-7.0; phosphorus 0.03-0.40; sulfur to 0.02.

In tab. 1 shows the chemical compositions of the proposed alloys.

Table 1

For comparison, these same steels are alloyed with a known alloy containing, by weight. %: tungsten 66.1; silicon 21.3; iron else. Melting point offered

First offer (jYaKa 1-3) Known

The distribution of tungsten in the finished steel is shown in Table. 2

(1-3) alloys is 1310-1450 ° C. known - 1550-1595 ° C. The distribution of tungsten in the smelting alloy,%:

In the slag 0.5-2.0 2.5-3.5

Technological parameters for deoxidization and alloying of steels are given in Table. 3

table 2

Table 3