RU2502822C1 - Steel - Google Patents

Abstract

FIELD: metallurgy.

SUBSTANCE: steel contains the following, wt %: carbon 0.2 - 0.25, silicon 0.2 - 0.25, manganese 0.2 - 0.25, nickel 13.0 - 15.0, chrome 0.2 -0.25, molybdenum 0.2 - 0.25, copper 1.3 - 1.7, cobalt 0.5 - 0.7, zirconium 0.2 - 0.25, boron 0.05 - 0.1, aluminium 0.2 - 0.25, niobium 1.3 - 1.7, tungsten 0.1 - 0.15, and iron is the rest.

EFFECT: increasing steel strength.

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Description

The invention relates to the field of metallurgy and the production of steel, which can be used in mechanical engineering.

Known steel containing carbon 0.02-0.25; silicon 0.02-2.5; manganese 0.3-3.5; nickel 0.05-10.0; chrome 0.05-10.0; molybdenum 0.05-3.5; copper 0.05-3.0; cobalt 0.05-10.0; zirconium 0.003-0.1; iron and inevitable impurities rest [1].

The objective of the invention is to increase the strength of steel.

The technical result is achieved in that the steel containing carbon, silicon, manganese, nickel, chromium, molybdenum, copper, cobalt, zirconium, iron, additionally includes boron, aluminum, niobium, tungsten in the following ratio of components, wt.%: Carbon 0, 2-0.25; silicon 0.2-0.25; manganese 0.2-0.25; nickel 13.0-15.0; chrome 0.2-0.25; molybdenum 0.2-0.25; copper 1.3-1.7; cobalt 0.5-0.7; zirconium 0.2-0.25; boron 0.05-0.1; aluminum 0.2-0.25; niobium 1.3-1.7; tungsten 0.1-0.15; iron is the rest.

The table shows the compositions of steel.

Table Components Composition, wt.%: one 2 3 Carbon 0.2 0.23 0.25 Silicon 0.2 0.23 0.25 Manganese 0.2 0.23 0.25 Nickel 15.0 14.0 13.0 Chromium 0.25 0.23 0.2 Molybdenum 1.8 2.0 Copper 1.3 1,5 1.7 Cobalt 0.7 0.6 0.5 Zirconium 0.25 0.23 0.2 Boron 0.25 0,07 0.1 Aluminum 0.25 0.23 0.2 Niobium 1.7 1,5 1.3 Tungsten 0.15 0.13 0.1 Iron rest rest Rest The tensile strength of steel, MPa ~ 120 ~ 120 ~ 120

In the composition of steel, the components manifest themselves as follows. Molybdenum, nickel, niobium, cobalt, tungsten, chromium, zirconium increase the hardness and strength of steel. Copper, aluminum and nickel prevent the occurrence and development of cracks. Boron stabilizes carbide. Aluminum deoxidizes steel.

Steel can be smelted in induction furnaces. The main source material is a specially prepared mixture and steel scrap. Heat treatment of steel includes quenching at a temperature of 850 ° C in oil and tempering at a temperature of 530 ° C.

Information sources

1. JP 2002-003942, C22C 38/00, 2002.

Claims (1)

Steel containing carbon, silicon, manganese, nickel, chromium, molybdenum, copper, cobalt, zirconium and iron, characterized in that it further includes boron, aluminum, niobium and tungsten in the following ratio, wt.%:
carbon 0.2-0.25 silicon 0.2-0.25 manganese 0.2-0.25 nickel 13.0-15.0 chromium 0.2-0.25 molybdenum 0.2-0.25 copper 1.3-1.7 cobalt 0.5-0.7 zirconium 0.2-0.25 boron 0.05-0.1 aluminum 0.2-0.25 niobium 1.3-1.7 tungsten 0.1-0.15 iron rest