Distance between the Welding Rod and Material
- You have to keep constant the interval of a wedding rod tip and mother material during welding.
- As a standard, the distance is about 3-5mm. If an interval approaches too much and a wedding rod and mother material contact, an arc stops occurring and a wedding rod and mother material will adhere depending on the case.
Movements of Welding Rod
- Moreover, if an interval separates too much, an arc will be distributed and suitable welding cannot be performed.
- Since a wedding rod becomes short as it advances welding, it warns to keep the interval of a wedding rod and mother material suitable.
- What is necessary is generally, just not to necessarily move a wedding rod straightly.
- The wedding rod is buried in the meantime, checking that two mother material has melted firmly.
- The rhythm which leans (1) wedding rod and melts the material of one side as an image and which melts (2) another material of pushing in (3) wedding rod will be repeated.
Adjustment of Electric Current
- In the arc welding, the adjustment of an electric current is very important.
- If the electric current is too low, the materials are not melted enough.
- Also the arc does not often birth, and the welding rod fixes to the material easily.
- Oppositely, if the electric current is too high, the materials are melted excessively, and a hole is often made at the welding point.
Examples of Arc Welding
When an equipment is made by constructed channel materials, we can make it with bolts and nuts.
However if we can handle the arc welding, the processing has more shorter time and easy building.
Figure 6 shows an example of the experimental equipment using the arc welding.
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