我厂今年七月份开始试生产φ12横筋不相交螺纹钢(亦称月牙形螺纹钢)。对于这一品种,由于以前从未生产过,缺乏经验,在轧制中多次出现了横筋(即月牙筋)充不足的现象。开始以为是轧辊磨损,后来才发现这是与成前孔的设计有关。根据我们的生产实践,现提出对这种螺纹钢成前孔(即K2孔)设计的一些看法,以期拋砖引玉。 I plant in July this year began trial production φ12 cross-bar non-intersecting rebar (also known as crescent-shaped rebar). For this variety, due to the lack of experience in the past has never been produced before, in the rolling appeared repeatedly bars (crescent tendons) insufficient charge phenomenon. Began to think that the roll wear, and later discovered that it is related to the design of the hole before. According to our production practice, some suggestions on the design of such rebar into the anterior hole (ie, the K2 hole) are proposed with a view to initiating the project.