Integration of High-efficiency Series Techniques for Finishing of Seamless Steel Tubes

Addressing the problemof unbalance between the production capacities of the heating area and the hotrolling area and those of the pipe finishing area respectively associated with two PQF pipe mill lines as located in a certain company,the Pareto analysis method is used to identify the causes for the problem,and the major factors as affecting the overall efficiency of the equipment,based on which series of hi-efficiency techniques for pipe finishing are developed.Described here are the main techniques for optimization of steel pipe collection process,straightener charging process,and detector vertical press roll process,and other techniques like the intelligentized techniques for protecting the marking nozzle from hitting,and preventing vibration of the marking machine,and the technique for automatic drying of tube coating film,and techniques concerning development of tube color ring painting process,development of high-efficiency tube packaging process, and optimization of single-piece charging process, etc.Thanks to employment of the above mentioned series of techniques for high-efficiently finishing seamless steel tubes,both the material flowand quality flowof the PQFmill lineshavebecomemoreconsistent,and theproblemof unbalance among production lines at different operation areas is fixed,and thus regular products can be manufactured consistently and high efficiently so as to create conditions for development of high-end products in the future.