Rare-earth wear-resistant stainless steel lining board material and preparation method thereof

A technology of stainless steel and lining plate, applied in the field of rare earth wear-resistant stainless steel lining plate material and its preparation, can solve the problem of unsatisfactory wear resistance and corrosion resistance, poor toughness, brittleness and corrosion resistance of medium and low alloy steel, etc. problem, to achieve the effects of excellent wear resistance, good plasticity, and stable and uniform alloy quality

Active Publication Date: 2014-03-26
MAANSHAN YIFENG INDAL GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, in domestic practical applications, high manganese steel is still dominant. Among several mainstream materials, high manganese steel has good toughness, but its wear resistance and corrosion resistance are not ideal; high chromium cast iron has good wear resistance, but its toughness is low. Poor; the brittleness and corrosion resistance of medium and low alloy steels are not up to standard

Method used

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Embodiment Construction

[0013] A rare earth wear-resistant stainless steel liner material, which contains chemical elements and mass percentages: carbon 0.2-0.4, silicon 0.3-0.4, manganese 3.2-3.4, chromium 3.5-3.8, nickel 0.03-0.04, molybdenum 0.12- 0.25, vanadium 0.04-0.07, lanthanum 0.01-0.03, Sc0.04-0.07, S≤0.04, P≤0.04, and the balance is iron.

[0014] The production method of the rare earth wear-resistant stainless steel liner material is:

[0015] (1) Prepare pig iron and scrap iron as the source of iron matrix in a ratio of 1:1.5, 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 order of batches of alloying elements put into the furnace during the alloying process is: (1) chromium, ...

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PUM

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Abstract

The invention relates to a rare-earth wear-resistant stainless steel lining board material which contains the following chemical components in percentage by mass: 0.2-0.4% of carbon, 0.3-0.4% of silicon, 3.2-3.4% of manganese, 3.5-3.8% of chromium, 0.03-0.04% of nickel, 0.12-0.25% of molybdenum, 0.04-0.07% of vanadium, 0.01-0.03% of lanthanum, 0.04-0.07% of Sc, at most 0.04% of S, at most 0.04% of P and the balance of iron. The lanthanum, scandium and other elements are added on the basis of medium/low-carbon steel, so the obtained alloy steel has the advantages of high hardness, excellent wear resistance, favorable toughness, favorable plasticity and corrosion resistance; and compared with the low-carbon high-alloy steel, the alloy steel provided by the invention has lower cost. Part of scrap iron is used as the raw material, so that the alloy quality is more stable and uniform, thereby enhancing the comprehensive mechanical properties. When the refining agent is used for casting production, the yield is obviously enhanced.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a rare earth wear-resistant stainless steel liner material and a preparation method thereof. Background technique [0002] After more than 30 years of development, the liner material has experienced the development of high manganese steel, ordinary white cast steel, nickel hard cast iron, high chromium white iron, modified high manganese steel and medium and low alloy steel with various quenching and tempering processes stage. At present, in domestic practical applications, high manganese steel is still dominant. Among several mainstream materials, high manganese steel has good toughness, but its wear resistance and corrosion resistance are not ideal; high chromium cast iron has good wear resistance, but its toughness is low. Poor; the brittleness and corrosion resistance of medium and low alloy steels are not up to standard. It is necessary to research and develop liner material...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C38/58C22C33/04C21D6/00
Inventor 潘政桃张学伍
Owner MAANSHAN YIFENG INDAL GROUP
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