SU1252378A1 - Alloying composition for steel - Google Patents

Description

112523782

The invention relates to the metallurgy of the known and proposed lingy, in particular to the development of league-1 aturams, are given in table. 2. A tour to improve the properties of the steel. The steel making is carried out in the scope of the invention - an increase in the cooling furnace. Consumption known

dignity and corrosion resistance 5 and the proposed ligature is

steel .,2% of the mass of steel.

The essence of the method lies in the after heat treatment (quenching

additional input into the composition of the ligat - from 850 ° С to the oil and tempering at 200 ° С

boron and nitrogen. When entering ligatury with air cooling) samples

nitrides are formed in steel and carbon. They are subjected to the test for boron cold-resistance nitrides, which are evenly brittle and corrosion-resistant. how

It is assumed in the volume of the grain matrix that follows from the data table. 1 and 2, they provide cold-complementary entry into the composition of the ligatuity and corrosion resistance of steel, boron and nitrogen, as compared to the content of the components with a known ligature alloy and known alloys, reducing the cold resistance and corrosion

in tab. 1. Properties of steel after steel resistance.

Table 1

 As an impurity, the ligature may contain no more than 2.0% carbon, 0, A% phosphorus and 0.04% sulfur.

Proposed

12

0.95 0.62 0.5 0, A1 0.32 0.018 0.027 0.0049 1.0 0.66 0.61 0.52 0.47 0.017 0.022 0.0042

table 2

31,060,750,710,620,540,0140,0200,0034

41,200,800,730,640,600,0100,0130,0019

50,980,700,620,480,350,0900,0250,045

Famous

60,600,450,32--0,200,150,048

Editor A.Shishkin

Order 4591/29 Circulation 567 Subscription

VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow, F-E5, Raushsk nab., 4/5

Production and printing company, Uzhgorod, Projecto st., 4

Continued tabl, 2

Compiled by N.Kostornoy

Tehred M. Khodanich Proof-reader I. Erdeyi

Claims (1)

A master alloy for steel, containing silicon, manganese and iron, characterized in that, in order to increase the cold resistance and corrosion resistance of steel, it additionally contains boron and nitrogen in the following ratio of components, wt.%: Silicon 17-34.0 Manganese 50-75.0 Boron 0.1-3.0 Nitrogen 0.03-3.0 Iron Rest