the quality of the root pass and efficiency of the cordierite ceramic backing producedwelding process

Supplied  By   RIHUI Ceramic Welding Backing

Phase 1 of this paper aimed to assess the appropriate welding parameters,the quality of the root pass and
efficiency of the cordierite ceramic backing producedwelding process.In the other test samples,no disconti-
nuities were observed.One notes in the upper part of the weld of test sample C10,Figure 8(c),that the filling of the
welded joint was insufficient,in other words,the entire thickness of the plate.In fact,the aim of this phase is to
assess the first weld bead(root pass)produced using the ceramic backing.In the case of a welded joint,there is the
need to apply additional weld beads over this root pass, with the aim of filling the joint.The results obtained herein
are compliant with Andrade 7 who presented the technical feasibility of welding the root pass with a ceramic backing
and the robotized fluxed core wire welding process, specifying the welding parameters of the 205 A current,
26 V voltage and welding speed of 20 cm/min,using a root face opening of 3 mm,a chamfer angle of 408 and 608 and
a torch inclination angle of 158.
Table 2.Parameters of welding measured while multipass welding is carried out. Pass Voltage(V)Current(A)
Figure 3.(a)Schematic design with dimensions of test plate and(b)assembly of ceramic backing on the lower part of the steel plate
prior to welding.
 

Date: 2023-04-10     hits: 436    Return