Medium carbon steel material for pump bearing and preparation method of medium carbon steel material

A pump bearing and carbon steel technology, which is applied in the field of medium carbon steel materials for pump bearings and their preparation, can solve problems such as high requirements and harshness, and achieve the effects of long service life, improved yield, and reduced inclusion oxides.
CN103667964AActive Publication Date: 2014-03-26江苏星爵实业有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
江苏星爵实业有限公司
Publication Date
2014-03-26
Patent Text Reader

Abstract

The invention discloses a medium carbon steel material for a pump bearing. The medium carbon steel material contains the following chemical elementary components in percentage by mass: 0.4-0.6% of C, 0.4-0.6% of Si, 1.1-1.3% of Mn, 0.7-0.9% of Cr, 0.03-0.05% of Ni, 0.12-0.15% of Mo, 0.6-0.8% of Co, 0.02-0.04% of V, 0.5-0.7% of W, 0.2-0.4% of Ti, 0.01-0.02% of Yb, 0.03-0.04% of Lu, less than or equal to 0.04% of S, less than or equal to 0.04% of P and the balance of Fe. The alloy steel prepared by adding various elements such as rear earth elements, tungsten, molybdenum and the like is high in hardness, good in wear resistance, favorable in toughness of medium carbon, strong in impact resistance, suitable for key parts such as the pump bearing and the like, long in service life and not easy to damage; a refining agent is used for casting production, so that the porosity in a casting is reduced by 1-2, and oxide inclusions are kept at about level 2.
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Description

technical field

[0001] The invention relates to the field of metal material preparation, in particular to a medium-carbon steel material for pump bearings and a preparation method thereof. Background technique

[0002] The working environment of pump valves is diverse and harsh, and the requirements for materials are very high. At present, there are many kinds of alloy steel used in pump valves, and the technology has made great progress, but there are still many problems, such as wear resistance, hardness, rust resistance Performance, corrosion resistance, high and low temperature resistance, brittleness, toughness, etc., cannot meet the production requirements in many occasions, and further improvement is needed to improve production efficiency, reduce costs, and improve safety. Guaranteeing and providing impetus for social development are still arduous tasks. Contents of the invention

[0003] The object of the present invention is to provide a medium-carbon steel mate...

Claims

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