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由上海液压气动技术研究所开拓创新、设计研制成功的两台VPU 电脑控制HY-4080环形荧光灯弯管液压控制系统于1991年9月27日在福州灯泡厂投入生产使用。该系统的主要技术参数:最大压力:6.3MPa工作压力:4MPa最大流量:80L/min工作流量:63L/min额定负载:4900N每根灯管所用生产时间:7.5～8.5s该系统的投产,使其弯管成品率由原平均41%提高到90%。由于采用了液压集成回路,减少了管路和漏损。与国外先进的同类产品比较,设计合理、价格低,具有显著的经济
Pioneered by Shanghai Institute of Hydraulic Pneumatics, two VPU computer-controlled hydraulic control systems designed and manufactured successfully were put into production in Fuzhou Light Bulb Plant on September 27, 1991. The system’s main technical parameters: Maximum pressure: 6.3MPa Working pressure: 4MPa Maximum flow: 80L / min Working flow: 63L / min Rated load: 4900N The production time of each lamp: 7.5 ~ 8.5s The system put into operation so that The elbow yield from the original average 41% to 90%. As a result of the hydraulic integrated circuit, reducing the pipeline and leakage. With the advanced foreign similar products, reasonable design, low prices, with significant economic