There are three types of welding methods.
-Fusion welding
-Pressure welding
-Brazing

This time, we would like to introduce about copper and copper welding, which is our strength.

● Fusion welding: A method of melting and welding the part to be welded
→ Arc welding (method of melting and welding materials with high current + gas)
Typical example
①MAG welding: CO₂ gas 100%
Or argon 80% + CO₂ 20%
②MIG welding: Argon 100%
③TIG welding: Argon 100%

<Meaning of each alphabet>
M…METAL
A…Active (active gas)
I…Inert (inert gas)
T…Tungsten (electrode)

We use direct current of TIG welding to perform copper + copper welding.
The base material to be welded is preheated and welded with electricity, but the electricity and heat are dispersed and emitted in all directions of the copper material, making temperature control and speed extremely difficult.
For this reason, expert techniques and tricks are important due to current adjustment during welding, gas adjustment called after-flow, etc. are different each time depending on the season, temperature, and copper lot.

● Additional explanation
TIG welding of dissimilar materials such as copper and aluminum is not possible.
Reason 1: The melting point of copper is 1085℃, and the melting point of aluminum is 660℃.
Reason 2: The welding conditions are very different from DC for copper and AC for aluminum.

This time, we introduced one of the three types of welding, "fusion welding".
The article below introduces "brazing" and TIG welding machines, so please take a look.

75 years of our strength, "brazing", one of the welding methods
https://en.nc-net.or.jp/company/91883/product/detail/185141/

Please contact us for copper and aluminum precision parts processing.
You may find information on processing technology such as copper bus bars, copper rods and copper precision parts on our website.
http://ishigaki-st.com

ISHIGAKI SHOUTEN Inc.
1-629 Seko, Moriyama Ward, Nagoya City, Aichi Prefecture 463-0068
TEL 052-793-3080 FAX 052-793-1079
E-mail: info@ishigaki-st.com
Person in charge: Sales Department Sodeoka