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我厂为适应我国石油工业飞跃发展的需要,几年来在采油树的制造工艺方面作了很多重大改革。但对其闸阀的主要件——阀杆梯形螺纹仍沿用车削工艺,产量和质量都不能满足要求。全厂职工学习了大庆人的革命精神,敢闯敢创,群策群力,克服了没有资料,没有大设备等种种困难,经过一年多的努力,制造出80吨冷轧梯形螺纹机,这样,不仅满足了大批量生产阀杆的需要,而且使加工质量和零件的机械性能大大提高。图1是工人在使用自己制造的冷轧机轧制阀杆螺纹。
In order to meet the needs of the rapid development of China’s oil industry, our plant has made many major reforms in the production process of X-mas trees in recent years. However, the main part of its gate valve, the trapezoidal thread of the valve stem, still uses the turning process, and the output and quality cannot meet the requirements. All employees of the factory learned the revolutionary spirit of Daqing, dared to dare to innovate and work together to overcome the difficulties of no data, no large equipment, etc. After more than a year of hard work, they manufactured 80 tons of cold-rolled trapezoidal threading machines. Satisfy the need for mass production of stems, and greatly improve the quality of machining and the mechanical properties of parts. Figure 1 shows a worker rolling a stem thread using his own cold mill.