Taking cold rolling rings of 6304 bearings as examples, drawing-up of the cold rolling technology for rings of the deep groove ball bearings and design method of cold rolling dies are introduced.
以6 30 4轴承套圈冷辗扩为例，介绍深沟球轴承套圈的冷辗扩工艺编制及其冷辗模具的设计方法。
Taking cold rolling rings of 6304 bearings as examples, drawing-up of the cold rolling technology for rings of the deep groove ball bearings and design method of cold rolling dies are introduced.
以6 30 4轴承套圈冷辗扩为例，介绍深沟球轴承套圈的冷辗扩工艺编制及其冷辗模具的设计方法。
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