Local quenching process for fastener

The invention discloses a fastener local quenching process which comprises the following steps: feeding materials to a turntable by a vibration feeding disc, conveying screws into a heating cavity through the rotation of the turntable, heating the tips of the screws through the heating cavity, enabling the heated screws to fall into a quenching tank from the turntable for quenching, and blowing the screws through an air cooling device after the quenching is completed. And residual quenching oil on the screw is blown off, so that local quenching of the tip of the screw is realized, the hardness of the screw is improved, the tip is prevented from being bent or broken during use, and the connecting effect of the screw is improved. 本发明公开了一种紧固件局部淬火工艺，由振动上料盘上料至转盘，通过转盘的转动将螺钉输送至加热腔内，通过加热腔对螺钉的尖端进行加热，加热后螺钉从转盘上掉落至淬火槽内进行淬火，完成淬火后通过风冷装置对螺钉进行吹风，将螺钉上残留的淬火油吹掉，实现了螺钉尖端的局部淬火，提高其硬度，避免使用时尖端弯折或断裂，提高螺钉的连接效果。