正在眾多鋼管中，方管算是性能比較好的一類了。下面我們一起來了解一下方管的一種制作工藝吧。方管冷拔成型實彎的優(yōu)點是反彈小，成型準確，而且只要輥型準確，內(nèi)角成型的R比較準確。 空彎的優(yōu)點是可以在無法進行實彎時進行邊長的彎折，比如方矩管的上邊/側(cè)邊同步彎折和精整?？諒澾€可以彎折R<0.2t的內(nèi)角而不致管壁發(fā)生斷裂。

Among many steel pipes, square pipes are of better performance. Next, let's learn about a kind of manufacturing technology of square tube. The advantages of square tube cold-drawing forming solid bending are small rebound, accurate forming, and as long as the roll shape is accurate, the R of inner corner forming is more accurate. The advantage of empty bending is that it can bend the side length when it is impossible to bend, such as synchronous bending and finishing of the top/side of square tube. Empty bending can also bend the inner angle of R < 0.2T without breaking the pipe wall.

實彎的缺點是有拉伸/減薄效應。第一，實彎會使彎折處產(chǎn)生拉伸，拉伸效應使彎折線縱向的長度縮短; 第二，實彎彎折處金屬會因拉伸而變薄。 空彎的缺點是在上邊/側(cè)邊同步空彎時，由于上輥和下輥同時產(chǎn)生壓力，成型力容易超越臨界點，造成邊部失穩(wěn)內(nèi)凹，并且也會影響到機組穩(wěn)定運行和成型質(zhì)量。這也是方矩管和圓管空彎成型時不同的特點。

The disadvantage of solid bending is its stretching/thinning effect. Firstly, the real bending will make the bending place stretch, and the stretching effect will shorten the longitudinal length of the bending line; secondly, the metal in the real bending place will become thinner due to stretching. The disadvantage of blank bending is that when upper/side synchronous blank bending occurs, the forming force easily exceeds the critical point due to the simultaneous pressure of upper and lower rolls, resulting in the instability of the edge concave, and also affecting the stable operation and forming quality of the unit. This is also the different characteristics of square tube and circular tube in air bending forming.

綜上所述，方管的冷拔工藝有優(yōu)點也有缺點，但沒有什么東西是完美的，每個物品都各有各的優(yōu)點。想要了解更多資訊請隨時關(guān)注我們的網(wǎng)站，我們會有專業(yè)的客服為您服務,感謝各位的支持。

To sum up, the cold drawing process of square tubes has both advantages and disadvantages, but nothing is perfect, each item has its own advantages. For more information, please keep an eye on our website. We will have professional customer service for you. Thank you for your support.