RU2478134C1 - Steel - Google Patents

Abstract

FIELD: metallurgy.

SUBSTANCE: proposed composition contains the following substances, in wt %: carbon 0.5 - 0.9, silicon 0.3 - 0.5, manganese 0.3 - 0.5, vanadium 0.3 - 0.4, copper 2.4 - 3.0, nickel 0.8 - 1.0, chromium 2.6 - 3.0, phosphorus 0.05 - 0.1, sulfur 0.01 - 0.02, boron 0.04 -0.06, aluminium 0.11 - 0.15, titanium 0.001 - 0.002, molybdenum 0.1 - 0.16, niobium 1.6 - 2.2, nitrogen 0.0001 - 0.00012, iron making the rest.

EFFECT: higher anti-tearing surfaces.

1 tbl

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 of 0.4-0.9; silicon 0.5-3.0; manganese 0.1-2.0; vanadium 0.02-1.0; copper 0.05-2.0; nickel 0.05-5.0; chrome 0.05-3.0; phosphorus ≤ 0.02; sulfur ≤ 0.02; boron 0.0003-0.05; aluminum 0.005-0.1; titanium 0.005-0.3; molybdenum 0.4-3.0; iron - the rest [1].

The objective of the invention is to increase the anti-seize properties of steel.

The technical result is achieved in that the steel containing carbon, silicon, manganese, vanadium, copper, nickel, chromium, phosphorus, sulfur, boron, aluminum, titanium, molybdenum, iron, additionally includes niobium and nitrogen in the following ratio of components, wt.% : carbon 0.5-0.9; silicon 0.3-0.5; manganese 0.3-0.5; vanadium 0.3-0.4; copper 2.4-3.0; nickel 0.8-1.0; chrome 2.6-3.0; phosphorus 0.05-0.1; sulfur 0.01-0.02; boron 0.04-0.06; aluminum 0.11-0.15; titanium 0.001-0.002; molybdenum 0.1-0.16; niobium 1.6-2.2; nitrogen 0.0001-0.00012; iron is the rest.

The table shows the compositions of steel.

Table Components Composition, wt.% one 2 3 Carbon 0.9 0.7 0.5 Silicon 0.5 0.4 0.3 Manganese 0.5 0.4 0.3 Vanadium 0.4 0.35 0.3 Copper 2,4 2.7 3.0 Nickel 0.8 0.9 1,0 Chromium 2.6 2,8 3.0 Phosphorus 0.1 0.08 0.05 Sulfur 0.01 0.01 0.02 Boron 0.06 0.05 0.04 Aluminum 0.15 0.13 0.11 Titanium 0.001 0.0015 0.002 Molybdenum 0.16 0.13 0.1 Niobium 1,6 1.9 2.2 Nitrogen 0.0001 0.00011 0.00012 Iron rest rest rest Scoring load on steel, kg ~ 150 ~ 150 ~ 150 Note: dry friction at a sliding speed of up to 20 m / s, counterbody - gray cast iron, modified (MSCh 28-48).

In the steel composition, the components manifest themselves as follows. Molybdenum strengthens the solid solution. Chromium and boron stabilize carbides and increase the hardness and wear resistance of the alloy. Nickel and niobium improve the metal base of the alloy. Copper increases the strength and plastic properties of steel. Sulfur and phosphorus improve the antifriction properties of steel. Vanadium and aluminum act as deoxidizers. Titanium helps to chop grain. Nitrogen forms nitrides of niobium, aluminum, vanadium, which prevent alloy wear and grain formation.

Steel can be smelted in induction furnaces. The main source material is a specially prepared mixture and steel scrap. The heat treatment of steel is carried out according to the regime: quenching at 850 ° C, tempering at 650 ° C.

Information sources

1. JP 2003-105485, C22C 38/00, 2003.

Claims (1)

Steel containing carbon, silicon, manganese, vanadium, copper, nickel, chromium, phosphorus, sulfur, boron, aluminum, titanium, molybdenum, iron, characterized in that it additionally includes niobium and nitrogen in the following ratio, wt.%:
carbon 0.5-0.9 silicon 0.3-0.5 manganese 0.3-0.5 vanadium 0.3-0.4 copper 2.4-3.0 nickel 0.8-1.0 chromium 2.6-3.0 phosphorus 0.05-0.1 sulfur 0.01-0.02 boron 0.04-0.06 aluminum 0.11-0.15 titanium 0.001-0.002 molybdenum 0.1-0.16 niobium 1.6-2.2 nitrogen 0.0001-0.00012 iron rest