Preparation method of high-hardenability and high-toughness alloy steel
A high hardenability, alloy steel technology, applied in the field of alloy steel processing, can solve the problems of long cooling time, inconvenient use, easy deformation of alloy steel, etc., and achieve the effect of simple operation, easy use and good cooling performance
Pending Publication Date: 2021-12-17
南通聚星铸锻有限公司
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Problems solved by technology
[0003] However, the existing alloy steel has deficiencies in processing. The traditional alloy steel directly enters the quenching oil or tempering treatment after heat treatment during the processing process, which makes the prepared alloy steel easy to deform during subsequent use. At the same time, the cooling time of the quenching oil stage Too long will bring inconvenience to use. Therefore, we propose a preparation method for high hardenability and high toughness alloy steel
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment
[0017] During the preparation process, it is melted first, first put scrap steel and steel shavings into the melting furnace, then add iron and molybdenum and heat the melting furnace to 65°C for 12 minutes, then add carbon, chromium, manganese and nickel again The temperature of the smelting furnace is raised to 750°C for 8 minutes. Finally, silicon and aluminum are added and stirred, and the temperature of the smelting furnace is controlled at 550°C. After it is completely smelted into molten steel, it is released when the temperature of the molten steel reaches 1620°C. The molten steel; secondly pouring treatment, take out the melted molten steel and let it stand for 8-15min. When the temperature of the molten steel reaches 1450°C, pour the molten steel into the mold and cast it into a steel ingot. The temperature of the steel ingot mold is set at 220°C to obtain The poured alloy steel billet is then forged, and the poured steel billet is taken out from the mold when the ste...
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Abstract
The invention discloses a preparation method of high-hardenability and high-toughness alloy steel. The high-hardenability and high-toughness alloy steel is prepared from the components of, in parts by mass, 20-24 parts of waste steel and steel cuttings, 12-18 parts of carbon, 15-24 parts of iron, 1-5 parts of silicon, 1.2-2.5 parts of manganese, 5-15 parts of chromium, 8-12 parts of nickel, 3-10 parts of molybdenum and 1-8 parts of aluminum. According to the preparation method of the high-hardenability and high-toughness alloy steel, through melting treatment, pouring treatment, forging treatment, heat treatment and high-temperature treatment, the prepared alloy steel has high hardenability and high toughness; meanwhile, an alloy steel blank needs to be forged during forging, so that the alloy steel is large in density and toughness; and quenching oil used after high temperature has good cooling performance and thermal oxidation stability, so that a finished product produced subsequently by the alloy steel has stability, the operation is simple, the use is convenient, and the use prospect is good.
Description
technical field [0001] The invention belongs to the technical field of alloy steel processing, in particular to a preparation method of alloy steel with high hardenability and high toughness. Background technique [0002] In addition to iron and carbon, alloy steel is added with other alloying elements, which is called alloy steel. It is an iron-carbon alloy formed by adding an appropriate amount of one or more alloying elements on the basis of ordinary carbon steel; according to the difference of added elements , and adopt appropriate processing technology, special properties such as high strength, high toughness, wear resistance, corrosion resistance, low temperature resistance, high temperature resistance, and non-magnetic properties can be obtained; [0003] However, the existing alloy steel has deficiencies in processing. The traditional alloy steel directly enters the quenching oil or tempering treatment after heat treatment during the processing process, which makes t...
Claims
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IPC IPC(8): C22C38/02C22C38/04C22C38/06C22C38/34C22C38/44C22C38/56C22C38/58C22C33/06C21D1/18C21D1/28C21D1/58C21D8/00
CPCC22C38/44C22C38/06C22C38/02C22C38/04C22C38/58C22C38/56C22C38/34C22C33/06C21D1/18C21D1/28C21D1/58C21D8/0205Y02P10/20
Inventor 归惠清
Owner 南通聚星铸锻有限公司