Alloy steel material for boron-containing roll and preparation method thereof
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A technology of alloy steel and roll, which is applied in the field of alloy steel materials for boron-containing rolls and its preparation, can solve the problems of limited use of high-line roll materials and high manufacturing costs, and achieve stable and uniform alloy quality, low cost, and improved yield Effect
Inactive Publication Date: 2015-12-30
马鞍山市方圆材料工程股份有限公司
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However, due to the high manufacturing cost of ordinary steel and cemented carbide, the use of high-line roller materials is limited
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[0014] A boron-containing alloy steel material for rolls, which contains chemical element components and mass percentages: carbon 0.8-0.9, tungsten 2.5-3, molybdenum 0.5-1.0, vanadium 1.5-2.5, chromium 2.5-3.0, niobium 0.05- 0.10, dysprosium 0.1-0.15, titanium 0.2-0.5, aluminum 0.1-0.15, copper 0.07-0.09, boron 0.15-0.19, P≤0.030, S≤0.030, and the balance is iron.
[0015] The production method of the alloy steel material for the boron-containing roll is:
[0016] (1) Prepare pig iron and scrap iron as the source of iron matrix at a ratio of 1:0.7, put pig iron into the furnace for melting, desulfurize, deoxidize, 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.;
[0017] (2) The batch sequence of alloying elements put into the furnace during the alloying process i...
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Abstract
The invention relates to a boron-contained alloy steel material for a roller. The boron-contained alloy steel material contains the chemical elemental ingredients in percentage by mass: 0.8-0.9% of carbon, 2.5-3% of tungsten, 0.5-1.0% of molybdenum, 1.5-2.5% of vanadium, 2.5-3.0% of chromium, 0.05-0.10% of niobium, 0.1-0.15% of dysprosium, 0.2-0.5% of titanium, 0.1-0.15% of aluminum, 0.07-0.09% of copper, 0.15-0.19% of boron, not higher than 0.030% of P, not higher than 0.030% of S and the balance of iron. According to the boron-contained alloy steel material, through adding a variety of alloy elements, such as boron, niobium, tungsten and the like, based on high-carbon steel, carrying out secondary refining, reasonably controlling post-casting heat treatment temperature and dosing raw materials in batches, the alloy steel material has the characteristics of high-speed steel, is resistant to high temperature, is high in red hardness and good in rigidity and toughness matching, has the characteristics of good surface abrasion resistance, good spalling resistance and low cold brittleness, is applicable to rollers of wire machines, and is relatively low in cost due to relatively low alloy element content.
Description
technical field [0001] The invention relates to the technical field of rolls, in particular to a boron-containing alloy steel material for rolls and a preparation method thereof. Background technique [0002] The roller is the central part of the wire rod machine, and it is the main tool for making the gadolinium-made parts and making the metal plastically deformed. The roll has a large working load, bears a lot of gadolinium pressure and torsional moment, and has a strong impact load and a large inertial force; in addition, the working environment of the roll is harsh, it has to withstand high temperature, and there is cooling water, It is working under the combination of cold and heat, and the wear is serious. [0003] There are several types of high carbon high chromium cast steel, ordinary steel and hard alloy. High-carbon high-chromium cast steel is widely used because of its wear resistance and low price. The commonly used materials for high-carbon high-chromium roll...
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