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对不同钢锭、不同锻压比的RH13锻材的显微组织、冲击性能等进行了研究。结果表明:?410、?600、?710三种钢锭经18MN径锻机锻造,当锻压比在5~11,锻材的带状偏析可以满足北美压铸模协会NADCA#207-1990标准。当锻压比固定,随着钢锭直径的增大,锻材横、纵向冲击功呈下降趋势;当钢锭尺寸相同时,随着锻压比的增加,锻材横、纵向冲击功呈逐渐上升趋势。
The microstructure and impact properties of RH13 forging with different ingot and forging ratio were studied. The results show that: ¢ 410, ¢ 600 and ¢ 710 are forged by the 18MN diameter forging machine. When the forging ratio is 5 ~ 11, the banded segregation of the forging material can meet the NADCA # 207-1990 standard of North American Die Casting Association. When the forging ratio is fixed, with the ingot diameter increases, the horizontal and longitudinal impact energy of forging material shows a downward trend; when the ingot size is the same, with the increase of forging ratio, the transverse and longitudinal impact energy of forging material shows a gradual upward trend.