SU322399A1 - - Google Patents

Description

FIELD OF THE INVENTION The invention relates to the field of finding steels that provide reliability and durability of cast parts.

Known austenitic steel containing%: carbon 1.2, manganese 12.2, bathdium 0.1, titanium 0.1, zirconium 0.1, silicon 0.5, iron and impurities else. However, such a steel in a cast state has an insufficient level of mechanical characteristics: tensile strength 87.3 kg / mm, elongation 34.2%, narrowing 28.6%, impact strength 24.8 kgm / cm.

The purpose of the invention is to improve the mechanical properties and wear resistance of steel.

To do this, aluminum, magnesium, niobium and tantalum are introduced into it in the following ratio of components,%:

Carbon0.9-1.5

Manganese9-15

Kremniydo 1.0

Phosphorod 0.12

Cerado 0.05

Aluminum 0,01-0,02

Titan0,01-0,05

Vanadium.0,005-0,05

Magnesium0.007-0.02

Tantalum0,0005-0,001

Steel in the cast state provides the following level of mechanical properties during quenching in water: tensile strength 94.1-100.2 kg / mm, elongation 42-46%, narrowing 38-52%, impact strength 28-36 kgm / cm,

Testing the wear resistance of parts made from the proposed steel showed a decrease in wear by 20-25% compared with parts made from known steel. Upon receipt of the proposed steel, it is possible to use titanium production waste, the additives of which in ordinary high-manganese steel make it possible to obtain the required steel composition.

15

Subject invention

Steel containing carbon, iron, manganese, vanadium, titanium and zirconium, characterized in that, in order to increase mechanical properties and wear resistance, aluminum, magnesium, niobium and tantalum are introduced into it

the following ratio of components,%: 25 Uglerod0,9-1,5

Manganese 9-15 3. Aluminum 0.01-0.02 Titanium 0.01-0.05 Vanadium 0.005-0.05 Magnesium 0.007-0.02 322399 4 Zirconium 0.002-0.01 Niobium 0.002-0.01 Tantal0.0005-0.001 Iron Oxide .