The development of heavy cylinder

In the history of our country, large and heavy cylinder, cylinder diameter range is bigger, average diameter in ~ mm, stroke in ~ mm. Production materials generally adopts the seamless steel pipe manufacturing cylinder, steel or cast iron manufacturing end cover, and the diameter of piston rod, using high-quality steel manufacturing chrome plated surface polishing, used in metallurgical industry and heavy machinery industry, etc. In the history of our country, large and heavy cylinder, cylinder diameter range is bigger, average diameter in ~ mm, stroke in ~ mm. Production materials generally adopts the seamless steel pipe manufacturing cylinder, steel or cast iron manufacturing end cover, and the diameter of piston rod, using high-quality steel manufacturing chrome plated surface polishing, used in metallurgical industry and heavy machinery industry, etc. Pneumatic industrial creation period (in our country ~) , the national economic construction is given priority to with heavy industry, be badly in need of heavy cylinder form a complete set. So in years' national unity 'priority to the development of heavy cylinder design, design of QGA, QGB, JB series products, heavy cylinder bore to ~ the mm. QGA for single piston rod double role without buffer cylinder, QGB for single piston rod double-acting cylinder buffer, JB as single double-acting fixed buffer metallurgy cylinder piston rod. Belong to the first generation of cylinder products in our country. Years later, the jinan huaneng to the first generation of QGA, QGB, JB series cylinder for local improvement, cylinder block USES pure aluminum alloy tube. On the structure and material: structure JunWei piston single double-acting piston, QGA for no buffer, QGB for adjustable buffer, JB for fixed buffer. Cylinder adopts the seamless pipe, piston rod for steel, front and back end cover, piston and so on as long as the parts for HTH gray cast iron, four for cold drawn steel bar, stud. No pneumatic seals standards and production plants, piston dynamic seal can only be used in leather fittings factory in shenyang Yx series hydraulic seals, start-up pressure is higher, in generally. ~. MPa, QGB prototype is piston and buffer plunger, buffer ring is installed in the buffer column fortress, there is no wear resistance of piston ring. Front cover with the piston rod is hard to cooperate with piston and cylinder and front cover to add copper sleeve bearing. The first generation of the cylinder, after years of use and development in metallurgy and heavy machinery and other industries, as well as the equipment working in harsh conditions, there is still application market, a lot of domestic pneumatic enterprises are still in production. With the improvement of processing technology, metal materials, sealing technology and new material appear constantly, pure aluminum earthen pipe, piston rod, magnetic ring, magnetic switch key parts such as specialized production, the first generation of cylinder products also received updates and development. Years later, wuxi huatong, jiangdu yong nut, zhaoqing, yantai, jinan huaneng, future Shanghai xinyi and other old enterprise successively optimized design of the first generation of cylinder, so as to gradually transition to the second generation of cylinder. Main features: ( ) Installation size ISO standardization, some factory to change the product model. ( ) Years, the domestic 'horse method developed inside diameter for mm fine drawing of aluminum alloy tube, cylinder diameter mm below the light-duty cylinder according to user needs, the finishing aluminum anodic oxidation treatment. To year, the specification is greater than or equal to mm ( ) Years later, our country has established a pneumatic seal standard, adopt new seal structure and material, oil free. ( ) Years later, the domestic has successfully developed the circular, contact and non-contact magnetic switch, can be used with the circular piston achieve non-contact control. ( ) Years later, the cylinder before and after end cover can use zinc alloy, aluminum alloy die casting.