注塑机五种机型的调模螺母(丝),材料均为45钢,形状都近似(如图1),只是随着机型增大而尺寸相应增大,各部尺寸见表1。每种机型的调模螺母,都要求在A、B、C三面淬火,硬度为HRC 48～55。以前生产80、120两种机型的调模螺母时,均为内外螺纹加工成型后高频淬火,结果造成A端内螺纹孔胀大、椭圆等淬火缺陷,降低了注塑 Injection molding machine five models of the mold nut (wire), the material is 45 steel, the shape is similar (Figure 1), but with the size of the corresponding increase in size increases, the size of the ministries in Table 1. Each model of the mold nut, are required in the A, B, C quenching on both sides, the hardness of HRC 48 ~ 55. 80,120 before the production of two models of the mold nut, both internal and external thread after forming high-frequency quenching, resulting in A-side internal thread hole swollen, oval and other quenching defects, reducing the injection