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Super-wear-resistant high-chromium cast iron rotor and machining method thereof

A technology of high chromium cast iron and processing method, which is applied in the direction of metal processing equipment, casting mold, casting mold composition, etc., can solve the problems of stopping the machine to replace the rotor, short service life, etc., and achieve weight reduction, service life improvement and high wear resistance Effect

Pending Publication Date: 2021-12-24
李春林
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the invention is to provide a super-wear-resistant high-chromium cast iron rotor and its processing method to solve the problem that the rotors in the existing crushers proposed in the above background technology are mostly cast steel and cast polyurethane, and the service life is short. , resulting in weekly downtime for rotor replacement

Method used

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  • Super-wear-resistant high-chromium cast iron rotor and machining method thereof
  • Super-wear-resistant high-chromium cast iron rotor and machining method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] Iron, chromium, manganese, copper, silicon, phosphorus, nickel, molybdenum, carbon, and sulfur are taken, and the weight percentages are 23% chromium, 0.8% manganese, 0.8% copper, 1.0% silicon, ≤0.1% phosphorus , 0.5% nickel, 0.5% molybdenum, 2.0% carbon, ≤0.06% sulfur, and the rest is iron. Put the above raw materials into the smelting furnace, and when heated to a molten state, stir and mix them evenly. The melting temperature is 1480- 1500°C to obtain molten metal, adjust the temperature of the molten metal to 1350-1370°C in the ladle, then pour the molten metal into the forming mold, after the molten metal is cooled in the forming mold, the casting is obtained, and the casting is quenched and quenched After tempering, a super wear-resistant high chromium cast iron rotor is obtained.

Embodiment 2

[0043] Take iron, chromium, manganese, copper, silicon, nickel, molybdenum, wherein, the percentage by weight is 26.5% chromium, 1.4% manganese, 1.0% copper, 1.25% silicon, ≤0.1% phosphorus, 0.75% nickel, 0.75% % molybdenum, 2.5% carbon, ≤0.06% sulfur, and the rest is iron. Add the above raw materials into the melting furnace, and when heated to a molten state, stir and mix them evenly. The melting temperature is 1480-1500 ° C to obtain molten metal , adjust the temperature of the molten metal to 1350-1370°C in the ladle, then pour the molten metal into the forming mold, and after the molten metal is cooled in the forming mold, the casting is obtained, the casting is quenched, and tempered after quenching to obtain Super wear-resistant high chromium cast iron rotor.

Embodiment 3

[0045] Take iron, chromium, manganese, copper, silicon, nickel, molybdenum, wherein the percentage by weight is 30% chromium, 2.0% manganese, 1.2% copper, 1.5% silicon, ≤0.1% phosphorus, 1.0% nickel, 1.0% % molybdenum, 3.0% carbon, ≤0.06% sulfur, and the rest is iron. Add the above raw materials into the melting furnace, and when heated to a molten state, stir and mix them evenly. The melting temperature is 1480-1500 ° C to obtain molten metal , adjust the temperature of the molten metal to 1350-1370°C in the ladle, then pour the molten metal into the forming mold, and after the molten metal is cooled in the forming mold, the casting is obtained, the casting is quenched, and tempered after quenching to obtain Super wear-resistant high chromium cast iron rotor.

[0046] heat treatment:

[0047]1. Annealing: heating rate is 50°C / hour, heat preservation at 250°C and 650°C for 2 hours respectively; heat preservation at 960°C for 6 hours, cool down to 700°C at ≤30°C / hour, heat pre...

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Abstract

The invention belongs to the technical field of high-chromium cast iron rotors, and particularly relates to a super-wear-resistant high-chromium cast iron rotor and a machining method thereof. The rotor comprises a base and is characterized in that side plates are uniformly arranged at the upper side of the base and connected with each another, and through holes are formed between the middles of the side plates and the base. Iron, chromium, manganese, copper, silicon, phosphorus, nickel, molybdenum, carbon and sulfur are added into a smelting furnace, heated to a molten state, uniformly stirred and mixed to obtain molten metal, the temperature of the molten metal is adjusted to 1350-1400 DEG C through the smelting furnace, and the molten metal is poured into a forming mold. According to the rotor, the materials with proper proportion can be stably combined, the fabricated super-wear-resistant high-chromium cast iron rotor has extremely high wear resistance, the service lifetime of the rotor is prolonged, and compared with a traditional cast steel rotor, the weight of the super-wear-resistant high-chromium cast iron rotor is reduced so that better rotation is facilitated.

Description

technical field [0001] The invention relates to the technical field of high-chromium cast iron rotors, in particular to a super wear-resistant high-chromium cast iron rotor and a processing method thereof. Background technique [0002] High chromium cast iron is the abbreviation of high chromium white wear-resistant cast iron. It has much higher wear resistance than alloy steel, and much higher toughness and strength than ordinary white cast iron. At the same time, it also has good high temperature resistance and corrosion resistance, combined with convenient production and moderate cost, so it is known as One of the finest abrasive wear resistant materials available today. [0003] Crusher is needed in the process of oil exploitation, and the rotor material in the existing crusher is mostly cast steel plus cast polyurethane, and the service life is short, which leads to the need to shut down and replace the rotor every week. Therefore, the present invention provides a Lon...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C37/08C22C37/10B02C13/28B22C9/22C22C33/08
CPCC22C37/08C22C37/10C22C33/08B22C9/22B02C13/28
Inventor 李春林
Owner 李春林