SU608846A1 - Alloy for deoxidizing and alloying steel - Google Patents

Description

(54) ALLOY FOR STEEL DECOMPOSITION AND ALLOYING

Table 1

The obtained alloys were used on two experimental steel melts in a 60 kg induction furnace with fractional output in

Chemical composition, weight. %

Deoxidation and alloying of the experimental metal was carried out according to the following technology.

1 smelting (buckets 1 and 2).

570 g of silicomanganese CMH17 (74% Mn, 18% Si) and 330 g of electrolytic manganese were added to the furnace, while 1.25% Mn and 0.17% Si were introduced into the metal.

Bucket additives at the time of release were:

Ladle 1 - 168.8 g of alloy 1; 92 g of ferrosilicon (carbon particle diameter 65) and 26 g of aluminum. Contributed,%: 0.40 MP; 0.21 Si; 0.02 N; 0.006 Ti; 0.087 Al; 0.045 V; 0.01 Cr; With traces.

Ladle 2 - 128.6 g of alloy 2; 110 g of electrolytic manganese.

Contributed,%: 0.40 MP; 0.21 Si; N traces; 0.03 Ti; 0.086 Al; 0.045 Nb; With traces.

Chemical composition weight.

The ingots were forged and rolled onto thick plates, another 10 mm.

30 kg bucket and metal casting into ingots weighing 10 kg.

The composition of the metal in the furnace before deoxidation is given in table. 2

table 2

2 melting. (Buckets 3 and 4).

880 g of silicomanganese CMN 17 (74% Mn; 18% Si) were added to the furnace, 1.08% Mn and 0.26% Si were introduced into the metal.

Bucket Additives During Release:

Ladle 3 - 112.5 alloy 3; 152 g of electrolytic manganese, 45 g of ferrosilicon FS-65, 23 g of aluminum. Contributed,%: 0.60 Mp; 0.12 Si; 0.019 N; With footprints; 0.15 Nb; 0.02 Ti; 0.01 Al.

Ladle 4 - 270 g of alloy 4; 55 g of ferrosilicon (carbon particle diameter 65); 30 g alumipi. Contributed,%: 0.60 Mp; 0.12 Si; 0.022 N; 0.05 ° C; 0.045 Nb; Ti traces; 0.1 Al.

The chemical composition of the steel obtained is given in table. 3

Table 3

The mechanical properties of steel in hot-rolled state are given in Table. four.

The results of comparative tests show that the use of the proposed alloy for the deoxidation and alloying of steel improves its strength, plastic and viscous properties.

Claims (1)

Invention Formula An alloy to deoxidize and alloy steel, containing manganese, silicon, nitrogen, carbon, titanium, iron, characterized in that, in order to improve the mechanical properties of steel, it additionally contains aluminum and niobium in the following ratio Table bats, weight. %: Manganese 10-70 0.5-50 Silicon Nitrogen 0.01- 5 0.01- 6 Carbon Aluminum 0.1-20 0.1-7 Titanium Niobium 5-40 Else. Iron Sources of information taken into account during the examination 1. USSR Copyright Certificate No. 358409, p. From 22C 35/00, 1970.