High-carbon high-chromium stainless steel and processing method thereof

Abstract

The invention discloses high-carbon high-chromium stainless steel and a processing method thereof and relates to the technical field of stainless steel processing. The processing method of the high-carbon high-chromium stainless steel comprises the following steps: performing mold and cap red transferring on high-carbon high-chromium stainless steel ingots, performing mold and cap removal, puttinginto a furnace, heating, and performing primary rolling on the heated ingots, wherein different heating and heat-preservation processes are selected according to different temperatures of the ingotswhen the ingots are put into the furnace and heated. The processing method of the high-carbon high-chromium stainless steel, which is disclosed by the invention, has the advantages of being simple inprocess, low in production cost and high in blank rate, and the produced stainless steel is good in physical and chemical property. The invention further relates to the high-carbon high-chromium stainless steel produced by using the processing method.

Description

technical field [0001] The invention relates to the technical field of stainless steel processing, and in particular to a high-carbon, high-chromium stainless steel and a processing method thereof. Background technique [0002] High carbon and high chromium stainless steel is often used as stainless slicing mechanical cutting tools and shearing knives, surgical blades, high wear-resistant equipment parts, etc., because it contains high carbon and chromium content, and also contains a certain amount of molybdenum and vanadium. Therefore, when the high-carbon and high-chromium stainless steel is produced, the deformation resistance is relatively large and the deformation temperature range is narrow. The above raw material characteristics limit the production method of the high-carbon and high-chromium stainless steel. Currently, it is commonly used in China. The blanking method of high-carbon and high-chromium stainless steel is mostly to send the annealed steel ingot to the f...

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Problems solved by technology

[0002] High carbon and high chromium stainless steel is often used as stainless slicing mechanical cutting tools and shearing knives, surgical blades, high wear-resistant equipment parts, etc., because it contains high carbon and chromium content, and also contains a certain amount of molybdenum and vanadium. Therefore, when the high-carbon and high-chromium stainless steel is produced, the deformation resistance is relatively large and the deformation temperature range is narrow. The above raw material characteristics limit the production method of the high-carbon and high-chromium stainless steel. Currently, it is commonly used in China. The blanking method of high-carbon and high-chromium stainless steel is mostly to send the annealed steel ingot to the forging plant for forging blanking. This method is generally completed after multi-fire forging. However, the multi-fire forging method often causes the temperature of the steel ingot Inhomogeneity, resulting in cracks on the surface of the ingot, reducing the billet rate. In addition, high-carbon and high-chromium stainless steel belongs to ledeburite steel. When the ingot is poured, it is easy to form uneven carbide segregation and affect the service life of the product. The larger the size, the larger the carbide segregation, so the current high-carbon and high-chromium stainless steel production generally chooses an ingot size of less than 3 tons, but its blanking rate is relatively low