... Roller grade 滚子等级 Roller heading 滚子镦锻 Roller hearth furnace 辊底式炉 ...
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In order to save materials and improve labor productivity, most of the bearing rings are formed through forging, cold heading or ball is rolled through the forming roller is small, cold heading shape.
为了保存材料和改进劳动生产力，大多支承圆环通过锻件，冷的标题被形成或球通过形成的路辗滚动是小，冷的标题形状。
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