Chromium manganese silicon vanadium abrasion-resistant cast iron

Abstract

The invention discloses chromium manganese silicon vanadium abrasion-resistant cast iron, which relates to a cast iron alloy. The chromium manganese silicon vanadium abrasion-resistant cast iron comprises the following chemical components in percentage by weight: 2.7-3.6% of C, 16-22% of Cr, 2.2-3.0% of Mn, 0.5-1.0% of Si, 0.5-1.0% of V, less than or equal to 0.10% of P, less than or equal to 0.06% of S, and the balance of Fe and inevitable impurities. The invention has the advantages of high hardness, sufficient toughness, superior abrasion resistance, low production cost, long service life, wide application and the like, and can be widely used for manufacturing various mechanical components working under low-stress grinding abrasion conditions.

Description

【Technical field】: [0001] The invention relates to a cast iron alloy, in particular to a chromium-manganese-silicon-vanadium wear-resistant cast iron belonging to high-chromium wear-resistant cast iron. 【Background technique】: [0002] At present, the most widely used high-chromium wear-resistant cast irons at home and abroad include chromium, molybdenum cast iron and chromium, molybdenum, copper cast iron. The main components of chromium and molybdenum cast iron are calculated by weight percentage: carbon 2.8-3.5%, chromium 13-18%, molybdenum 2.5-3.0%, and the rest is iron. The main components of chromium, molybdenum and copper cast iron are calculated by weight percentage: 2.0-3.0% carbon, 18-28% chromium, 1.5-2.5% molybdenum, 0.8-1.2% copper, and the rest is iron. Both of the above two types of high chromium wear-resistant cast irons contain molybdenum. Molybdenum is added to wear-resistant cast irons to improve their hardenability and further improve their wear resistan...

AI Technical Summary

Problems solved by technology

However, since molybdenum is a scarce resource in our country, its price is high, which increases the production cost of chromium, molybdenum cast iron and chromium, molybdenum, copper cast iron

In order to reduce costs, some domestic manufacturers have reduced the chromium content of high-chromium cast iron to less than 13%, and the molybdenum content to less than 0.5%, so that the cost is reduced, but the wear resistance is also greatly reduced, and the service life is only equivalent to the original 1 / 3 to 1 / 2

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