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Method for preparing low alloy high wear resistant cast steel plate

A high wear-resistant, low-alloy technology, applied in the field of wear-resistant cast steel manufacturing, can solve the problems of high production cost, complicated process, difficult to control, etc., and achieve the effect of good strength and toughness, simplified process, and simple composition

Active Publication Date: 2013-08-28
HAIAN COUNTY SHENLING ELECTRICAL APPLIANCE MFG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

(3) Not all mechanical properties of typical lower bainite are superior
However, the process of this production method is complex and difficult to control, and the production cost is high

Method used

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  • Method for preparing low alloy high wear resistant cast steel plate
  • Method for preparing low alloy high wear resistant cast steel plate

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0051] 1) Use scrap steel, ferrosilicon, ferromanganese, ferrosilicon, ferromolybdenum, ferrochrome, ferrotitanium, ferrovanadium, ferroniobium, and rare earth silicon as raw materials for smelting, and make ingredients according to the following components: C: 0.25 wt.%;

[0052] Si: 0.9 wt.%;

[0053] Mn: 0.3 wt.%;

[0054] Cr: 0.7 wt.%;

[0055] Mo: 0.15 wt.%;

[0056] Ti: 0.05 wt.%;

[0057] Nb: 0.01 wt.%;

[0058] V: 0.05 wt.%;

[0059] RE: 0.01 wt.%;

[0060] P, S≤0.01 wt.%

[0061] The rest is Fe and unavoidable impurities;

[0062] 2) Using medium frequency induction furnace for smelting, first heat and melt ordinary steel scrap and ferrochrome, and conduct pre-furnace analysis;

[0063] 3) Add ferromanganese, ferrosilicon, and ferromolybdenum in turn, wait until all are melted, then add ferrochrome and then further melt, deoxidize with aluminum wire, then pour molten steel into it and place ferrotitanium, ferrosilicon, ferroniobium, and rare earth at the same ...

Embodiment 2

[0071] 1) Use steel scrap, ferrosilicon, ferromanganese, ferrosilicon, ferromolybdenum, ferrochrome, ferrotitanium, ferrovanadium, ferroniobium, and rare earth silicon as raw materials for smelting, and make ingredients according to the following components: C: 0.3 wt.%;

[0072] Si: 1.2 wt.%;

[0073] Mn: 1.0 wt.%;

[0074] Cr: 0.85 wt.%;

[0075] Mo: 0.2 wt.%;

[0076] Ti: 0.25 wt.%;

[0077] Nb: 0.03 wt.%;

[0078] V: 0.15 wt.%;

[0079] RE: 0.06 wt.%;

[0080] P, S≤0.02 wt.%

[0081] The rest is Fe and unavoidable impurities;

[0082] 2) Using medium frequency induction furnace for smelting, first heat and melt ordinary steel scrap and ferrochrome, and conduct pre-furnace analysis;

[0083] 3) Add ferromanganese, ferrosilicon, and ferromolybdenum in turn, wait until all are melted, then add ferrochrome and then further melt, deoxidize with aluminum wire, then pour molten steel into it and place ferrotitanium, ferrosilicon, ferroniobium, and rare earth at the same t...

Embodiment 3

[0091] 1) Use scrap steel, ferrosilicon, ferromanganese, ferrosilicon, ferromolybdenum, ferrochrome, ferrotitanium, ferrovanadium, ferroniobium, and rare earth silicon as raw materials for smelting, and make ingredients according to the following components: C: 0.35 wt.%;

[0092] Si: 1.6 wt.%;

[0093] Mn: 1.8 wt.%;

[0094] Cr: 1.0 wt.%;

[0095] Mo: 0.3 wt.%;

[0096] Ti: 0.35 wt.%;

[0097] Nb: 0.05 wt.%;

[0098] V: 0.25 wt.%;

[0099] RE: 0.1 wt.%;

[0100] P, S≤0.03 wt.%

[0101] The rest is Fe and unavoidable impurities;

[0102] 2) Using medium frequency induction furnace for smelting, first heat and melt ordinary steel scrap and ferrochrome, and conduct pre-furnace analysis;

[0103] 3) Add ferromanganese, ferrosilicon, and ferromolybdenum in turn, wait until all are melted, then add ferrochrome and then further melt, deoxidize with aluminum wire, then pour molten steel into it and place ferrotitanium, ferrosilicon, ferroniobium, and rare earth at the same time...

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Abstract

The present invention relates to a method for preparing a low alloy high wear resistant cast steel plate. The cast steel plate includes the following components: 0.25-0.35 wt% of C, 0.9-1.6 wt% of Si, 0.3-1.8 wt % of Mn, 0.7-1.0 wt% of Cr, 0.15-0.3 wt% of Mo, 0.05-0.35 wt% of Ti, 0.01-0.05 wt% of Nb, 0.05-0.25 wt% of V, 0.01-0.1 wt% of RE, no more than 0.03 wt% of P and S, and the balance Fe. The components are melted and molded, and then a processed ingot is placed therein for heating. When the temperature reaches 1050-1070 DEG C, the heat preservation lasts. After the completion of heat preservation, the ingot is placed into a 240-245 DEG C salt bath furnace for heat preservation. The ingot is finally cooled by the air. The casting and heat treatment process of the present invention is relatively simple, easily controlled, and low in cost, and the produced material has good strength and toughness.

Description

technical field [0001] The invention relates to a manufacturing technology of wear-resistant cast steel used under impact, in particular to a preparation method of low-alloy high wear-resistant cast steel. [0002] Background technique [0003] Wear is a common phenomenon in the industrial field and daily life, and it is also an important cause of material and energy loss. This ancient and complex problem has always been one of the focuses of people's attention. Abrasion is one of the main failure modes of materials, and the economic loss it causes is very huge. For example, according to figures released by the United States in the 1980s, the annual loss due to wear and tear was as high as one billion U.S. dollars, the loss caused by wear and tear in the former Soviet Union reached 12 billion rubles each year, and the loss caused by friction and wear in the Federal Republic of Germany exceeded 10 billion West Deutschmarks each year. . At present, my country still lacks co...

Claims

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Application Information

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IPC IPC(8): C22C38/38C22C38/34C22C38/28C21D1/28
Inventor 王康
Owner HAIAN COUNTY SHENLING ELECTRICAL APPLIANCE MFG
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