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CO_2气体保护焊是一种焊接新工艺,具有效率高,焊接质量好,热影响变形小等优点,尤其适合农业机械上的薄板、机架的焊接。国外还用于零件的修复堆焊上,如曲轴轴颈,旋转轴类。此工艺由于CO_气源问题,使其在农机厂中推广受到限制。本文介绍了土法自制CO_气的革新经验,为这一工艺在农机厂的推广开辟了一条途径。文章重点介绍了发生器,也介绍了一点焊接原理和设备,以增进读者对这一工艺的了解。
CO_2 gas shielded welding is a new welding technology with the advantages of high efficiency, good welding quality and little heat distortion, which is especially suitable for the welding of thin plates and frames on agricultural machinery. Foreign parts are also used for repair surfacing, such as crankshaft journal, rotary shaft. Due to the CO_ gas source, this process has limited its promotion in agricultural machinery. This article introduces the indigenous CO_ gas innovation experience, opened up a way for the promotion of this technology in agricultural machinery. The article focuses on the generator, but also introduced a little welding principle and equipment to enhance the reader’s understanding of this process.