Welding of boiler steel
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The welding of boiler steels
For permanent connection of boiler steels used in electric welding — manual, semi — automatic (the last two are produced under the flux layer). Manual welding is inefficient, so is only used when welding small parts (for example, to uvarivanie fittings), as well as the preliminary connection of workpieces).
The most productive automatic welding of boiler constructions is made on a stationary welding frame type posts.
All brands of boiler steels on their weldability steels belong to the first group, and therefore provide good quality welds.
Compliance of the welding electrodes of a particular brand of boiler steel below:
|Brand electrodes||Brand welding wire|
CL-38, CL-39, TML-IVB,
TSU-2XM, TML-3U, CMB-95*,
Chromo 335 kV**, CR 910 kV**
CL-39, CL-20, TML-MEMORY,
electrodes CMB-95, and CMB-CMB 96 and 98 supply company «Kobe steel» (Japan).
* * electrodes 335кв chromo, chromo 910кв the supply of «Kleckner» (Germany).
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Features of welding of boiler steels
To avoid cracking of the material before application of the welding electrodes calcined. Modes of calcination, depending on the brand of electrode, the following:
|Mark’s electrode||Modes of calcination|
|Temperature, °C||Duration, h|
|TSL-39, TML-1U, TSU-2XM, TML-MEMORY, CL-20, CL-45.||380 ± 20||2,0+ 0,5|
|EA-400/10U, EA-400/10T, DH-26, DH-26M, DH-15, DH-15K.||220 ± 20||1,0 + 0,5|
After welding the mechanical characteristics of the weld should be comparable with indicators for the base metal.
To buy at cost-effective prices manufacturer of steel boilers in the range, the company offers Electrocentury-steel. The manufacturer ensures conformity of gauge metal, arrange its prompt delivery to the point specified by the user.