1. 麻花钉麻花钉,国外叫螺旋钉(Screwed nail)或(nail with twist shank)。较为常见的一种是钉身为方形断面,并扭转成麻花状(见图1)。过去,这种钉子是在制成圆钉后,再在搓丝机上轧出螺纹。这种生产方法成本高、产量低。为了改变这种生产状况,我们通过试验,成功地直接用转模在拉丝机上先拉制出麻花丝(见图2)。然后再在普通制钉机 1. Twist nails twist, abroad called screw nail (screwed nail) or (with with shank). The more common one is a pinned square section, twisted into a twist (see Figure 1). In the past, this nail is made of round nails, and then roll thread on the thread rolling machine. This method of production is costly and yields low. In order to change this production situation, we successfully test the twist directly on the wire drawing machine using a transfer die (see Figure 2). Then in the ordinary nail making machine