回牙：指对预先攻有牙的工件进行第二次螺牙的修复的过程。
Back to the teeth: that there are teeth on the pre-attack for the second threaded parts repair process.
更多选择：除标准规格外，可根据需要订制螺纹长度及其它螺牙标准准。
More options: besides standard specifications, thread length and other specification can be made according to order.
工艺：螺牙蒸汽锅炉式电热管是由加热管与螺牙法兰焊接，蒸汽锅炉绝缘电木固定而成。
Technology: flange type of heating is heating pipe and welding flanges from fixed.
它是将特殊的工程树脂永久地粘附在螺牙上，产生永远牢固、永久使用、绝对环保的防松螺丝产品。
It is a special project to a permanent adhesive resin in the thread, have always solid, permanent use, absolute lock screw environmental products.
通过优化找到了一种合理结构，此结构能够使螺母螺牙载荷分布较为合理，减小最薄弱部分承受的载荷。
Then a reasonable structure is obtained. The loading of the screw thread in this structure is reasonable and the loading at the most dangerous place is decre…
前言：钢质曲轴螺孔攻丝加工中经常出现螺纹烂牙、中径扩大等问题，且刀具寿命较短。
During tapping in steel crankshafts, the most commonly encountered problems are "mess tooth" and oversize thread, additionally the tap life is very low.
前言：钢质曲轴螺孔攻丝加工中经常出现螺纹烂牙、中径扩大等问题，且刀具寿命较短。
During tapping in steel crankshafts, the most commonly encountered problems are "mess tooth" and oversize thread, additionally the tap life is very low.
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