矩形扁鋼管空拔模設(shè)計(jì)

Design of Sinking Die of Rectangular Flat Steel Tube

摘要: 介紹了改進(jìn)的矩形扁鋼管空拔模的設(shè)計(jì)方法，即空拔模長邊面由平直面改進(jìn)設(shè)計(jì)為弧形面，同時(shí)在入口過渡段和定徑帶銜接中心設(shè)計(jì)一定的橢球凹陷曲面，從而起到有效防止空拔模因熱處理產(chǎn)生向外突變的作用，同時(shí)減小矩形扁鋼管長邊面在拔制過程中承受的壓力和摩擦力，避免空拔后的矩形扁鋼管出現(xiàn)長邊面凹陷現(xiàn)象。

Abstract: Described in the paper is the method for designing the modified sinking die of the rectangular flat steel tube. The design involves major modifications of the die, i.e., turning the original flat long-edge face into a curved one, and getting connecting part between the inlet transitional zone and the sizing zone having an oval-shaped concave curved surface. These modifications can not only prevent sudden outward change of the die itself due to the negative effect by heat treatment, but also reduce the pressure and friction imposed upon the long-edge face of the rectangular flat tube during the sinking process so as to avoid defective concavities on the long-edge faces of the tube after sinking.