EQUIPMENT AND METHOD FOR MANUFACTURING STEEL-PLASTIC COMPOSITE PIPE

摘要

The present invention refers to a process and an apparatus for combination ofsteeltubes or pipes with plastic linings, in which steam is used as heat carrier toheat thesteel tubes or pipes lined with linings. The apparatus comprises amultifunctionalcombining chamber, a multifunctional carriage for conveying tubes or pipes, anarrangement for steam circulating, which continuously supplies re-usablesteam, acooling and shaping arrangement and a controlling device. The steamcirculatingsystem comprises a furnace for re-heating the steam and means for supplyingsupplementing steam. The percentage of passing the qualification control isincreasedup to 99.9% by embodiment of the method and/or apparatus according to thepresentinvention, while it may only be 97% by a conventional apparatus, and theproductioncapacity is increased by up to 15%. Thanks to the recovery and re-use of thesteam ina circulating system, it may use only three tons of steam if the dailyproduction isforty tons in a production line, and 405 RMB may be saved in a day. Thanks totherecovery and re-use of water in a circulating system, the water consumptionforproducing a ton steel and plastic combined tubes or pipes may be reduced by8%.That means a remarkable economic and environmental value. The presentinventionmay decrease the labor intensity of the workers and the cost that refers tothe worktime by 5 %. The total cost for a ton tubes or pipes may be reduced by 1ORMB.