English (language) A castle is a fortress. It may also have a residence, and many castles were residences of various lords and nobles, but a castle isn't required to be a residence, as many were built to be forts guarding militarily interesting areas. A mansion is a large, opulent residence. It may have a fairly high degree of security and some level of fortification to protect the people living there, but it is not intended to be a strong place with strategic military importance. Written Jun 12, 2015 â¢ View Upvotes.
A plug weld is used to fasten two pieces of metal together using a welder. When joining the pieces, a hole is drilled into the top piece and it is laid over the bottom one. A weld is then made by running a bead inside of the drilled hole, thereby holding the two pieces together.
Electrode: A part of the electical circuit (Normally positive terminal is connected to it) Filler metal: Metallic wire used to fill the gap between the base metals to be joined. It need not be a part of the electrical circuit. Welding Rod: A colloquial name of electodes/filler metal used in SMAW process. An electrode could be either consumable or non-consumable. (i.e) during welding, the metal reqd to fill the gap could be provided by the electrode itself (SMAW, GMAW,SAW processes). In GTAW process, the tungsten electode is non-consumable & thats why it is called as autogenous welding.