Books are the ever burring lamps of accumulated wisdom.

书籍乃储积智慧的不灭明灯。

Deformation extent is described by burring factor in the process of round hole burring.

在圆孔翻边过程中，变形程度是用翻边系数来描述的。

The size of upsetting-burring punch and angle of support panel also have great impacts on the upsetting-burring.

镦粗凸模尺寸以及下支撑板斜角对镦粗翻边有较大的影响。

Finally, the traditional burring and upsetting-burring processes for the thick sheet of aluminum alloy were verified.

最后，对铝合金厚板的传统圆孔翻边和局部镦粗圆孔翻边工艺进行了验证。

Briefed in the article are the inner burr formation of and the burring method for the hi-frequency straight welded tube.

简要介绍了高频直缝焊管内毛刺的形成和清除方法。