torch-acetylene-oxygen-43.html
CW Product Cat UK
44 / 80
44 x21 original flame
straightening
. welding and cutting causes stresses in the
material
that can result in unwanted deformations. if these deformations are serious, the part must be rectified. flame
straightening
is usually a suitable method, and in some cases it is the only option for reducing the deformations to an acceptable level. flame
straightening
the process takes place by means of rapid local heating, which entails a permanent local deformation of the
material
through the prevention of thermal expansion. during cooling, the
material
then shrinks. steel must be heated to approx. 600 ? 700°c, which causes the steel to change to a dark red colour. heat forming heating in order to bend
bar
profiles etc. generally requires the same rapid, brief heating as flame
straightening
. pre-heating (raised working temperature) a welding object to be pre-heated is dependent on the type of parent
material
, the
material
thickness and which welding process is to be used. if pre-heated is required, the flamtech torch is well-equipped for the task. flamtech torch the acetylene gas supply to flamtech must come from a cylinder bundle. in addition, double flashback arrestors, safe- guard-5, must be fitted with double outlets, as more than 5 m 3 /h of acetylene is required. note! ? fa 6 ma 3 fy 6 for thermolen ® flame
straightening
nozzle ma3, flame
straightening
working pressure: oxygen 2
bar
8.500 l/h acetylene 1
bar
lowest working pressure: oxygen 1.1
bar
5.400 l/h acetylene 0.9
bar
heat output: 98 kw nozzle fa 6, pre-heating (raised working temperature) working pressure: oxygen 1.5
bar
10.000 l/h acetylene 0.7
bar
lowest working pressure: oxygen 0.8
bar
6.400 l/h acetylene 0.6
bar
heat output: 116 kw rule of thumb for acetylene output from various cylinder sizes cylinder size content, filled cylinder maximum capacity a 40 7.8 kg equiv. to approx. 7.170 l 900 l/h bundle a 40 x 10 62 kg equiv. to 57.000 10.000 l/h rule of thumb for
straightening
and heating
material
thickness x 2.5 x 100 = capacity of heating attachment e.g.
material
thickness: 20 mm x 2.5 x 100 = 4000 l/h e.g.
material
thickness: 30 mm x 2.5 x 100 = 7500 l/h e.g.
material
thickness: 40 mm x 2.5 x 100 = 10.000 l/h part no. flamtech torch. 300469 nozzles ma 3 300611 fa 6 300616 fy 6 for thermolen ® , natural gas and propane 307990
cutting-support-device-45.html
