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Alloy steel for bucket teeth and preparation method of bucket teeth
The invention discloses alloy steel for bucket teeth and a preparation method of the bucket teeth, and relates to the field of mechanical manufacturing. The alloy steel for the bucket teeth comprises the chemical components in percentage by weight: 0.25-0.33 percent of C, 0.30-0.80 percent of Si, 0.85-1.25 percent of Mn, 0.70-1.10 percent of Cr, 0.20-0.35 percent of nanoscale TiN, less than or equal to 0.030 percent of p and less than or equal to 0.030 percent of S. The method comprises the following steps: smelting and casting the materials to obtain castings; and performing heat treatment to obtain the bucket teeth. When the alloy steel is smelted, Ca-Si alloys are added while preliminary deoxidizing is carried out by using ferromanganese and silicon iron at the same time, the nanoscale TiN is added during modification treatment; the bucket teeth castings are subjected to high-temperature solid solution spheroidizing annealing. According to the alloy steel and the preparation method, the problems of high material cost of the bucket teeth, poor impact toughness, easiness for breakage and short service life are solved.
Alloy steel for bucket teeth and preparation method of bucket teeth
The invention discloses alloy steel for bucket teeth and a preparation method of the bucket teeth, and relates to the field of mechanical manufacturing. The alloy steel for the bucket teeth comprises the chemical components in percentage by weight: 0.25-0.33 percent of C, 0.30-0.80 percent of Si, 0.85-1.25 percent of Mn, 0.70-1.10 percent of Cr, 0.20-0.35 percent of nanoscale TiN, less than or equal to 0.030 percent of p and less than or equal to 0.030 percent of S. The method comprises the following steps: smelting and casting the materials to obtain castings; and performing heat treatment to obtain the bucket teeth. When the alloy steel is smelted, Ca-Si alloys are added while preliminary deoxidizing is carried out by using ferromanganese and silicon iron at the same time, the nanoscale TiN is added during modification treatment; the bucket teeth castings are subjected to high-temperature solid solution spheroidizing annealing. According to the alloy steel and the preparation method, the problems of high material cost of the bucket teeth, poor impact toughness, easiness for breakage and short service life are solved.
Alloy steel for bucket teeth and preparation method of bucket teeth
LONG JIXIANG (author)
2015-05-27
Patent
Electronic Resource
English
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