前言在祖国二十年大庆的前夕,我厂成功的试制了国内第一台采用可控硅正流元件控制的二万七千瓦秒电容储能式点焊机(见图1)。为我国焊接设备的发展填补了缺门,给电子工业、轴承制造及特种有色合金的焊接开辟了新的道路,向天津市首届活学活用毛泽东思想积极分子代表大会献了厚礼,向伟大祖国的廿年大庆献了厚礼。 Foreword On the eve of the 20th anniversary of the motherland, our factory successfully produced the first 27,000-watt-second energy-storage point welder in China that adopts the controllable silicon positive-flow components (see Figure 1). It has opened up new doors for the development of welding equipment in our country, opened up a new road for the welding of the electronics industry, bearing manufacturing and special non-ferrous alloys and offered a generous gift to the first active representative of Mao Zedongs ideological activity in Tianjin, Twenty years Daqing presented a gift.