在焊接生产工艺准备过程中最重要和最费力的阶段是确定正确的焊接规范,焊接规范选择的格式化只有在有相应的数学模型的情况下才有可能。诺模图和根据诺模图制造的计算尺就属于有效的模型表示形式。应当指出,在焊接生产中利用诺模图来作为信息处理机械化的手段的可能性还是很小的,其原因部分是由于数学模型不足。 The most important and laborious phase in the preparation of a welding production process is to determine the correct welding specifications, and the formatting of the welding specifications is only possible with the corresponding mathematical model. The nomogram and the slide rule made according to the nomogram belong to a valid model representation. It should be noted that the possibility of using nomogram as a means of mechanization of information processing in welding production is still small, partly because of inadequate mathematical models.