Is welding only done with a welding torch?
There are many forms of welding which do not use a welding torch to connect materials. Ultrasonic welding uses high frequency vibration to connect thin metal sheets or plastics. There is also roll welding where two pieces are run through two high pressure rollers to clamp them together. Electricity can be used to weld metals but applications are a bit limited because the cost can be high.
We don’t have to go through all of the types, just know that welders have more than one way to make sparks fly.
Can all metals be welded together?
Many types of metals can be welded to create a strong bond but there are exceptions to this rule. For example, aluminum and steel cannot be welded together because they have different melting points. As steel takes roughly twice the temperature of aluminum to weld, the aluminum becomes a liquid and will not stay near the steel. But beyond this, when aluminum and steel fuse together they form a brittle bond which is not very effective.
Is soldering a form of welding?
The answer is both yes and no. Traditional welding is done by heating two pieces of metal until they become molten along an edge and then fuse together. In soldering the two pieces of metal are not heated, but a lower melting-point material between them is heated to form a joint. So, soldering is a form of welding in that welding involves heat and connecting two components, but it is not strictly welding as it uses an intermediary to create a joint.
How can I tell if someone is a welder?
Welding is a serious profession with no small amount of danger involved. However, everyone needs to be able to laugh at themselves no matter how dangerous their job. Here are a couple of good humor ways to assess if you are talking to a welder.
- They use a welding rod for chop sticks.
- They are sunburnt in winter.
- Their shirts, sneakers, and socks are ventilated.
- You find that they flick their head down when the sun gets in their eyes.
- They keep feeling for a knob on the back of their baseball cap.
- You say, “It’s Miller time!” and they grab their gloves and shield.
- They lay z-weave ketchup beads on their eggs or French fries.