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.

Active Publication Date: 2014-03-26
江苏星爵实业有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002]Pumps and valves work in various and harsh environments, and have high requirements for materials. At present, there are many kinds of alloy steels used for pumps and valves, and the technology has made great progress, but There are still many problems, such as wear resistance, hardness, antirust performance, corrosion resistance, high and low tempe

Method used

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Embodiment Construction

[0013] A medium-carbon steel material for pump bearings, which contains chemical element components and mass percentages: carbon 0.4-0.6, silicon 0.4-0.6, manganese 1.1-1.3, chromium 0.7-0.9, nickel 0.03-0.05, molybdenum 0.12- 0.15, cobalt 0.6-0.8, vanadium 0.02-0.04, tungsten 0.5-0.7, titanium 0.2-0.4, Yb0.01-0.02, Lu0.03-0.04, S≤0.04, P≤0.04, and the balance is iron.

[0014] The production method of described pump bearing medium carbon steel material is:

[0015] (1) Prepare pig iron and scrap iron as the source of iron matrix in a ratio of 1:2.5, put pig iron into the furnace for melting, perform desulfurization, deoxidation, use refining agent for one-time refining, add alloy components for alloying, and then add scrap iron to melt , adding refining agent for secondary refining, testing and adjusting the content of chemical elements to pass, casting, post-casting heat treatment, etc.;

[0016] (2) The batch sequence of alloying elements put into the furnace during the al...

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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.

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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Application Information

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IPC IPC(8): C22C38/52C22C33/04C21D6/00
Inventor 司雪楠
Owner 江苏星爵实业有限公司
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