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Effect of Carbon Content on Burring and Tapping in Ultrahigh Strength TRIP Sheet Steels

机译：碳含量对超高强度跳闸钢中腐肉和攻丝的影响

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摘要

Effect of thermal drilling condition on burring of (0.1-0.4)C-1.5Si-1.5Mn (mass％) ultrahigh strength TRIP-aided sheet steels with polygonal ferrite matrix (TDP steels) was investigated for automotive applications.The combined rotational and downward force of the thermal drilling tool bit created friction heat.The height of the bushing was roughly 3 to 4 times the initial sheet thickness.The bushings are ideal for thread applications,as the strength of threads was significantly increased.We found that the burring and tapping contributed to the improvement of the tensile strength of 980 MPa class TRIP steel.1) A flow drill worked so well on burring of the TDP steels,and make it possible that nuts is not used.As for tapping of the following burring of TDP steel (thickness: 1.2 mm) using M6 short type flowdrill.Nutless became possible by machining center.2) In the use of the hand tap,three kinds of Frordrill made tapping possible.
机译：采用多边形铁氧体基质（TDP钢材）对（0.1-0.4）C-1.5Si-1.5mn（质量％）超高强度跳闸钢管（MAST％）超高强度跳闸板钢进行热钻孔的影响。用于汽车应用。组合旋转和向下热钻孔钻头的力产生摩擦热量。衬套的高度大约是初始纸张厚度的3至4倍。衬套是线程应用的理想选择，因为线的强度显着增加。我们发现毛刺和攻丝有助于提高980 MPa类跳钢的拉伸强度.1）流量钻头在TDP钢的骨箱上工作得很好，并使不使用螺母。用于点击以下毛刺的TDP钢（厚度：1.2毫米）使用M6短型流动液。在使用手动水龙头时，无背心，可以采用三种Frordrill攻丝。

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