自1972年第二期《焊接》杂志刊登了“中心可调式等离子切割枪及等离子切割在我厂的应用”一文以来,先后有不少单位来函索取图纸和资料,或前来交流这方面的经验,有的还带来了他们改进后的样品。这对我们的工作是个巨大鼓舞和鞭策。在这篇文章里,我们介绍了中心可调式等离子切割枪的构造和性能。总的看来,它满足了目前生产上的要求,但也存在一些缺点,如结构较复杂、加工件多、重量较大(465克)、长时间连续操作双手容易疲劳等。针对这一问题,我们在原有结构的基础上又做了一些改进(以下简称“二号枪”),其构造如图1所示,可分上下枪体两个部分,上枪体包括水冷电极、塑料绝缘管、胶质密封圈;下枪体包括水套、喷咀、进气 Since 1972, the second issue of “Welding” magazine published a “center adjustable plasma cutting torch and plasma cutting applications in my plant,” a text, there have been many units to obtain drawings and information, or to exchange experiences in this area Some also brought their improved samples. This is a great inspiration and encouragement for our work. In this article, we describe the construction and performance of a center adjustable plasma cutting torch. Overall, it meets the current production requirements, but there are also some shortcomings, such as the structure is more complex, more pieces, heavier weight (465 grams), prolonged continuous operation of both hands, fatigue and so on. In response to this issue, we have made some improvements on the basis of the original structure (hereinafter referred to as the “No. 2 gun”). The structure is shown in Figure 1, which can be divided into two parts, the upper and lower gun body, including the water-cooled electrode , Plastic insulation tube, plastic seal; under the gun body, including water jacket, nozzle, intake