Question

fusion welding solid - state welding add an answer item! add an answer item! answer bank erw smaw friction welding ultrasonic welding

Explanation:

To solve this, we analyze each welding type:

Fusion Welding (requires melting the base metal):

• SMAW (Shielded Metal Arc Welding): Uses an arc to melt the electrode and base metal, so it’s fusion welding.
• ERW (Electric Resistance Welding): Heat from electrical resistance melts the workpieces, so it’s fusion welding.

Solid - State Welding (no melting of base metal, bonding in solid state):

• Friction Welding: Generates heat via friction (no melting of base metal), so it’s solid - state welding.
• Ultrasonic Welding: Uses ultrasonic vibrations (no melting of base metal), so it’s solid - state welding.

Final Categorization:

• Fusion Welding: SMAW, ERW
• Solid - State Welding: friction welding, ultrasonic welding

For the Given Task (Assigning to Columns):

If we take the items one by one:

• SMAW → fusion welding
• ERW → fusion welding
• friction welding → solid - state welding
• ultrasonic welding → solid - state welding

Let's assume we are assigning the given highlighted "friction welding" first:

Friction welding is solid - state welding (no base metal melting, bonds in solid state).

Answer:

solid - state welding: friction welding

(If assigning others:
fusion welding: SMAW, ERW
solid - state welding: friction welding, ultrasonic welding
But based on the highlighted "friction welding", it goes to solid - state welding.)