拖拉机轮圈的轮廓形状比较复杂,如图1所示,加工起来不很容易。在生产这种轮圈过程中,我们不知绞了多少脑汁。最近我们学习了兄弟厂的先进经验,采用简易设备,热压拖拉机轮圈成功。这台设备的结构如图2所示,机身用厚钢板焊成;在钢板夹空中可以通入冷却水,借以降温。在压制的时候,先把2920×337毫米的长条钢 Tractor Rim outline of the more complex shape, shown in Figure 1, the processing is not very easy. We did not know how much brainpower we had to twist in producing this rim. Recently we have learned the advanced experience of Brother factory, using simple equipment, hot tractor rims success. The structure of this equipment is shown in Fig. 2, the fuselage is welded with a thick steel plate; cooling water can be introduced into the steel plate clamp to cool the air. In the suppression, the first 2920 × 337 mm long steel