Re: Heat Calculation In Hot Wire TIG

Hello Ipeak, Thanks for the reply.See basically I am finding the
answer of question that is 'How the deposition rate of Hot Wire TIG is
greater than that of TIG?' & I got the answer which is, ' Due to the
heat energy'.Explanation- "when we do the TIG welding the heat energy
produced by the arc (Considering 70% efficency) is distributed among
parent metal & filler wire, hence to get the total heat for parent &
filler metal which will be repossible for melting them, will be
available if & only if we wait for sometime to get the required melting
temperature" ( that is, as the time increases, the temperature of both
will increase), right! Now in order to find the heat energy required by
the parent metal & filler metal, I should aware of their dilution
percentage,right! & from literature survey I came to know that the
dilution in Hot Wire TIG welding is 40 to 45%. Now after knowing this
much (Dilution, Sp.Heat of metal & Temperature Difference), should I go
for ' Heat Energy Formula' that is, (mass) * (Sp. heat of material)
*(Temp. Difference) for calculating the heat energy & ultimately the
time? Will it be the proper way of estimation for heat energy
calculation? Should I assume the same sp.heat for entire range (that
is, from ambient temperature to melting temperature of metals)? If
anybody conclude something upon this please convey me.

.

Relevant Pages

  • Re: REALITIES OF GLOBAL WARMING
    ... "Global warming" isn't just temperature as one might read on a thermometer. ... such as in the heat of evaporation of water -- ... heat energy per gram evaporated. ...
    (sci.geo.meteorology)
  • Re: Kiln/furnace advice sought
    ... I'm planning on using 1450 C as a target kiln maximum temperature, ... melting it will take an age to heat up the last few degrees. ... I don't know the casting temperature needed for inconels - in fact I know ... I have done some casting with lower-tmperature metals, ...
    (uk.rec.models.engineering)
  • Re: Foam and rescue possibilities
    ... Though its brittleness decreases with falling temperature, ... Metals are generally ductile (as opposed ... to brittle) because their ultimate strength considerably exceeds their ...
    (sci.space.policy)
  • Re: Foam and rescue possibilities
    ... science knows that the strength of a metal (or metal alloy) generally ... Though its brittleness decreases with falling temperature, ... a wide variety of structural metals *don't* get brittle when ...
    (sci.space.policy)
  • Re: Stove fans
    ... In physics, a change in temperature at the junction of two different metals is produced when an electric current flows through them. ... The extent of the change depends on what the conducting metals are, and the nature of change (rise or fall in temperature) depends on the direction of current flow. ...
    (uk.rec.waterways)