ROLL BENDING:   overview  

For thinwall and difficult tube bending.

 

APPLICATIONS

Roll bending permits bending of all tubes. with shorter radii than those used for press bending. and attainment of better bend quality. It is particularly recommended for thin tubes used for furniture and metalwork (102 quality tubes. tubes to standard NFA 49642) and 304. 316. etc. stainless Steel tubes.

 

TOOLING

Depending on the type of form to be produced and the type of tube to be bent. different tooling can be used.

 

TOOLING FOR EMPTY BENDING

GS DE CHANTIER

 

 

 

ON-SITE GS Maximum bending angle: 100" d

VOMS 204

 

 VOMS 204

Maximum bending angle: 100"

 

MANDREL TOOLING

The use of an internal mandrel can defer the onset of wrinkling and ovality. The mandrel can be straight (Fig. 1) or articulated (Fig. 2); the choice will be determined by the following ratios:

Diameter to thickness

Radius to diameter

and by the nature of the metal and its metallurgical condition.