Preparation method of thermal power generation carburization wear-resisting ball

Abstract

The invention discloses a preparation method of a thermal power generation carburization wear-resisting ball. The preparation method comprises the following process steps: firstly, casting a wear-resisting ball body casting, selecting the following raw materials in parts by weight: 2.2 to 2.6 parts of ferromanganese, 25 to 30 parts of scrap iron blocks, 0.4 to 0.7 part of a waste copper plate and 0.3 to 0.5 part of a slag forming constituent, putting the raw materials into a smelting furnace for desulfuration, transferring smelted liquid subjected to desulfuration into a medium-frequency induction furnace for continuous smelting and heat insulation, adding a spheroidizing agent which is 0.5 to 1.2 percent of the weight of the smelted liquid into the medium-frequency induction furnace for spheroidizing at the temperature of 900 to 960 DEG C, and pouring in a die to obtain the wear-resisting ball body casting. According to the preparation method, the wear-resisting ball body and a wear-resisting layer are respectively obtained by pouring twice, so that the wear-resisting ball is high in mechanical property and impact toughness; furthermore, most components in the thermal power generation carburization wear-resisting ball are conventional elements, so that the production cost is low, and the preparation method is convenient to popularize.

Description

technical field [0001] The invention relates to the field of wear-resistant materials, in particular to a method for preparing carburized wear-resistant balls for thermal power generation. Background technique [0002] Wear-resistant ball is a kind of crushing medium used in ball mills, used to crush the materials in the mill, one is white cast iron with chromium as the main alloying element, referred to as chromium alloy cast iron, and the casting mill with chromium alloy cast iron as material The ball is called chromium alloy cast iron grinding ball; the other casting grinding ball made of ductile iron is called ductile iron grinding ball. Wear-resistant balls are mainly used in the production and processing of powder materials in metallurgical mines, cement building materials, thermal power generation and other industries. During the working process of the ball mill, the grinding ball is the main wearable part, which has a great impact on the cost of use; with the develop...

AI Technical Summary

Problems solved by technology

However, the existing wear-resistant spherical crystal structure is rough, the hardness is relatively low, the impact toughness is low, and the wear resistance is poor.

The existing Chinese patent is 201310658525.X, a wear-resistant ball patent, in which rare earths with a weight ratio of 0.05-0.10% are used in the wear-resistant balls. Wear-resistant balls are often consumables, and the cost of using rare earths is relatively high