SU1028735A1 - Cast iron - Google Patents

Abstract

CAST IRON containing carbon, silicon, manganese, chromium, titanium, aluminum, vanadium and iron, characterized in that, in order to improve the impact resistance and wear resistance of cast parts, it additionally contains zirconium in the following ratio of components,% by weight: Carbon 2.6 3.7 Silicon1.2-1.8 Manganese0.3-0.8 Chromium0.1-0.5 Titanium0.05-0.40 Aluminum, 0.005-0.200 Vanadium 0.1-0.3 Zirconium 0.01-0.25 Iron Else,

Description

The invention relates to metal, in particular to cast iron, intended for the manufacture of casting of grinding bodies. Known cast iron Cl, containing wt.%: Carbon2.8-3.6 Silicon1.2-2.8 Manganese0.4-0.9 Chrome0.1-0.8 Titanium0.1-0.3 Phosphorus0,, 3 Vanadium0, 1-0.2 Iron Remaining However, this cast iron does not possess a sufficient level of impact resistance, which is why the existing stock of wear resistance is not realized, so the crushing bodies destroyed in the process of operation do not fulfill their future purpose. cast iron is also used for casting grinding bodies 2. This cast iron also does not possess sufficient wear resistance and impact resistance. The closest to the offer is cast iron GZ, following its chemical composition, wt.%: Carbon 2.6-3.8 Silicon 0.6-2.5 Manganese 0.33-1.5 Chromium 0.09-1.0 Titanium 0.02- 0.4 Aluminum 0.02–0.3 Vanadium 0.03–0.3 Copper 0.02–1.0 Nitrogen 0.005–0.04 Iron Osal This cast iron is introduced into production, however, it also has low impact resistance and durability. In addition, it is rather difficult to produce cast iron of a given composition due to the introduction of nitrogen, since its introduction by blowing pig iron into the ladle is associated with considerable technical difficulties, and the introduction of manganese and chromium in the form of nitrated ferroalloys is economically disadvantageous and makes the process of smelting difficult. The aim of the invention is to increase the impact resistance and wear resistance of cast parts. The goal is achieved by the fact that iron containing carbon, silicon, manganese, chromium, titanium, aluminum, vanadium and iron additionally contains zirconium at the following ratio of components, wt.%: Carbon 2.6-3.7 Silicon 1.2-2-1, 8 Manganese 0.3-0.8 Chromium 0.1-0.5 Titanium 0.05-0.40 Aluminum 0.005-0.200 Vanadium 0.1-0.3 Zirconium 0.01-0.25 Iron Others In the table. 1 shows the composition of the proposed and known cast iron, and in table. 2 their properties. That blitz

Known 3.15 1.5 0.5 0.35 {21 0.55, 0.35

0.20

137 0.17 147

15 14

7 7 0.15 0.20 0.12 0, 14 0.21 0.18 0.45

The tests performed (Table 2) show that the available cast iron has stable wear resistance and impact resistance.

Continued tavl. 2

in comparison with the famous. On average, 20 wear resistance of cast iron increased by 20%, impact resistance - 2 times.

Claims (2)

PIG IRON containing carbon, silicon, manganese, chromium, titanium, aluminum, vanadium and iron, characterized in that, in order to increase the impact resistance and wear resistance of cast parts, it additionally contains zirconium in the following ratio of components, May.%: Carbon 2.6-3.7 Silicon 1.2-1.8 Manganese 0.3-0.8 Chromium 0.1-0.5 Titanium 0.05-0.40 Aluminum 0.005-0.200 Vanadium 0.1-0.3 • Zirconium 0.01-0.25 e Iron Rest ω b 00 m sl 2.8-3.6 1.2-2.8 0.4-0.9 0.1-0.8 0.1-0.3 0.1-0.3 0.1-0.2 Else Vanadium 0.03-0.3 Copper 0.02-1.0 Nitrogen 0.005-0.04 Iron Rest This cast iron implemented in production