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北京冶金液压机械厂1981年制成120吨举升液压缸是矿山重型汽车的配件,现已小批向美国出口。这是一种二级套筒式双耳环结构,缸径为9英寸和6英寸,工作压力为175巴,行程73英寸,采用方形活塞环和V形密封圈为活塞和活塞杆的密封。缸筒和活塞杆采用无缝钢管,内孔滚压加工,杆外表面镀铬,活塞杆耳环用合金钢铸件。要求磁粉探伤及喷丸强化,全部加工尺寸及螺纹,均要求互换,技术条件比较严格。该产品是去年冶金部和美国尤尼特·瑞格设备公司(Unit—Rig Eguipownet Co)签订制造及返销电动轮汽车零件协议的一部
Beijing Metallurgical Hydraulic Machinery Plant in 1981 made 120 tons lifting hydraulic cylinder is a heavy truck accessories, is now a small batch of exports to the United States. This is a two-stage sleeve type double-ended ring structure with 9-inch and 6-inch bores, a working pressure of 175 bar and a 73-inch stroke with a square piston ring and V-ring seal for piston and piston rod. Cylinder and piston rod with seamless steel pipe, the hole rolling process, the outer surface of the rod chrome, piston rod earrings alloy steel castings. Requirements of magnetic particle inspection and shot peening, all the processing size and thread, are required to swap, the technical conditions are more stringent. This product was signed last year by the Metallurgical Department and Unit-Rig Eguipownet Co, a unit that makes and re-exports electric car parts