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第四次铸件浸渗技术交流会1989年5月24~27日在大连市召开,七个省28个单位的代表参加了会议.会上,大连市科委领导宣读了国家专利局关于大连市旅顺铸件浸渗设备厂的LJSⅡ系列真空压力罐采用压力差式密封、实现自动锁紧装置获得国家专利的批准函件.大连市情报所介绍了国内外浸渗技术发展史,并从浸渗剂、浸渗工艺、浸渗设备三个方面论述了铸件浸渗技术.烟台乐泰中国有限公司
The fourth casting infiltration technology exchange was held in Dalian City from May 24 to May 27, 1989. Representatives of 28 units from seven provinces attended the meeting. At the meeting, leaders from Dalian Science and Technology Commission read out the reports of the State Patent Bureau on Dalian Lushun casting infiltration plant equipment LJS Ⅱ series of vacuum pressure tank using pressure-differential seal to achieve automatic locking device access to national patent letter of approval Dalian Municipal Information Office introduced the history of infiltration technology at home and abroad, and from infiltration agent, Infiltration technology, infiltration equipment discusses the three aspects of casting infiltration technology. LTA Taiwan Yantai Co., Ltd.