Welcome to http://www.srtsteelpipe.com
   
Hollow Section
Contact Us
Seamless Steel Pipe,ERW Steel Pipe,LSAW Steel Pipe,SSAW Steel Pipe,

Threeway Steel Co., Ltd

E-mail: sales@srtsteelpipe.com

Address: 22nd Floor, Royal Wing Tower, Long Champ International Building, No.9 Xiangfu Road, Changsha, Hunan, China, PC: 410116

Phone:0086-731-8873-9521  

Home - News > Company NewsCompany News

Features of Hollow Section When Roll Forming

Update:2016-02-29   View(s):1912   Keywords :

Features of Hollow Section When Roll Forming


1) The advantage of cold-formed is small rebound, forming accurate, and as long as the roller type accurately, inside corner molding R more accurate. The advantage is that it can be cold-formed side bent when you can not be cold-formed, for example, square and rectangular tube top / side synchronous bending and finishing. You can also cold-formed bent R <0.2t inside corners and walls without fracture.



2) There is a disadvantage of cold-formed stretching / thinning effects. It will produce cold-formed bends stretch, stretching effect of the longitudinal length of the bend lines shortened; second, cold bending of the metal due to stretching and thinning. The disadvantage is cold-formed in the top / side of sync when cold-formed, since the upper and lower rollers while generating pressure, easy molding force beyond the critical point, causing instability concave edge, and can also affect the stable operation of units and forming quality.

Related Information