Manganese steel material for pump shaft and preparation method thereof

A manganese steel and pump shaft technology is applied in the field of manganese steel materials for pump shafts and their preparation, which can solve problems such as harshness and high requirements, and achieve the effects of prolonging service life, stable and uniform quality, and improving comprehensive mechanical properties.

Inactive Publication Date: 2014-12-17
ANHUI RONGDA VALVE
View PDF2 Cites 3 Cited by
  • Summary
  • 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 temperature resistance, brittleness, toughness, etc., which cannot meet the production requirements in many occasions, and further improvement is needed to increase production efficiency. , reduce costs, improve safety, provide guarantee for the development of high-precision technology, and provide impetus for social development, the task is still very arduous

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0013] A manganese steel material for a pump shaft, which contains chemical element components and mass percentages: carbon 0.2-0.4, silicon 0.4-0.6, manganese 5.2-5.4, chromium 1.5-1.7, nickel 0.3-0.5, molybdenum 1.3-1.5 , niobium 0.6-0.8, titanium 1.2-1.4, lanthanum 0.02-0.04, As 0.04-0.07, S≤0.05, P≤0.05, and the balance is iron.

[0014] The production method of the manganese steel material for the pump shaft is characterized in that:

[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 alloying process is: ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

PUM

PropertyMeasurementUnit
tensile strengthaaaaaaaaaa
yield strengthaaaaaaaaaa
impact absorption energyaaaaaaaaaa
Login to view more

Abstract

The invention discloses a manganese steel material for a pump shaft. The manganese steel material comprises the following chemical elements in percentage by mass: 0.2-0.4% of carbon, 0.4-0.6% of silicon, 5.2-5.4% of manganese, 1.5-1.7% of chrome, 0.3-0.5% of nickel, 1.3-1.5% of molybdenum, 0.6-0.8% of niobium, 1.2-1.4% of titanium, 0.02-0.04% of lanthanum, 0.04-0.07% of As, S not higher than 0.05%, P not higher than 0.05%, and the balance of iron. Low-carbon and medium-carbon steel is modified through using such elements as lanthanum, manganese and titanium; a formed alloy not only has high hardness, strength, toughness and wear resistance, but also has a certain corrosion resistance; the alloy steel is used for the pump shaft, and is obviously long in service life. Refining agent is used for foundry practice, obviously improves the yield, in particular reduces the porosity of castings by 1-2 degrees without generating air holes in the surfaces of the castings, and obviously reduces oxide inclusions; and the oxide inclusions are about in grade 2.

Description

technical field [0001] The invention relates to the field of metal material preparation, in particular to a manganese steel material for a pump shaft 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 manganese steel material for ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to view more

Application Information

Patent Timeline
no application Login to view more
Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/60C22C38/58C22C33/04
Inventor 胡光荣
Owner ANHUI RONGDA VALVE
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap