$($Q#$5)($Welding$-6$ Marks$)$

A flux$-$cored arc$-$welding process is used to join two high carbon steel plates at a $90$ angle. The melting temperature for a high carbon steel plate is $2970R.$ The joint is an outside fillet weld. The plates are $0\mathrm{.}25$ in thick. The weld$-$bead consists of $45\%$ metal from the electrode and $55\%$ from the steel base plates. The heat transfer factor for FCAW $=0\mathrm{.}85,$ and the melting factor $=0\mathrm{.}70.$ Welding current $=130$ amps $,$ and welding voltage $=25$ volts. Velocity of the welding head $=30i\frac{n}{m}in.$ Electrode wire diameter $=0\mathrm{.}13in.$ A core of flux $($compounds that do not become part of the weld bead$)$ runs through the center of the electrode. The diameter of the Electrode core $=0\mathrm{.}065in.($a$)$ Calculate the cross$-$sectional area of the weld bead? $($b$)$ Calculate the feed rate of the electrode wire into the welding operation?

Answer the following Questions:

$(1).$ Cross$-$sectional area of the weld bead$=A_w$ is approximately

$0\mathrm{.}02833$ in ${?}^2$

$T,F$

$(2).$ Cross$-$sectional area of the weld bead$=A_w$ is approximately

$0\mathrm{.}04833i{n}^2$

$(3).$ Feed rate of electrode wire is approximately $58\mathrm{.}44i\frac{n}{m}in$

$T,F$

$(4).$ Feed rate of electrode wire is approximately $38\mathrm{.}44i\frac{n}{m}in$

T

$(5).$ Metal in the given FCAW Electrode is approximately $0\mathrm{.}00995i{n}^2$

T

F

F

$(6).$ Metal in the given FCAW Electrode is approximately $0\mathrm{.}00679i{n}^2$

T

F