it is trouble free and can work long hours, the only problem is the weight
Mainly In spot welding & resistance welding two type welding machines are used :- 1. Air Cooled & 2. water Cooled.
Riveting - when a solid fastener is placed in a drilled hole and expanded to hold an object in place. Welding - when a thin wire ('filler') is melted along with the area of bonding on the workpieces, which form a joint when cooled.
Material science is very important to welding.The way a metal is heated and cooled determines its properties. When welding is done incorrectly it can result is very weak material around the weld. A very common place to see the effects of welding is around the weld of two pipes. After a period of time, a rust ring can form on either side of the weld (not right next to it, but a small distance away). Although the weld is strong, the surrounding material is weaker.
Air cooled water cooled oil cooled Totally enclosed fan cooled Refrigerant cooled
it moves Because almost all Elements expand when heated and contract when cooled. As you are welding the metal at that location is trying to expand because of the heat. Ahead of the weld area the metal isn't moving. Behind the weld area the metal is trying to contract as it cools. If the whole weld could be heated at once it would expand then contract at the same rate without distortion.
Mainly In spot welding & resistance welding two type welding machines are used :- 1. Air Cooled & 2. water Cooled.
no
Advantages of Rubber is it is flexible and can be moulded into any shape. Disadvantages are when heated it expands and when cooled it contracts.
The air cooled can be more efficient because they will use less energy. They are difficult to maintain if it stays too hot.
1
Ive recently learnt about the machine gun in my history class and here is the main disadvantage but there were also a lot of advantages too. for instance the machine gun often over heated which caused a big problem because they weren't able to use them until they cooled back down. to cool them back down they usually put them in water but this could be a big problem if there weren't any water around.
Ive recently learnt about the machine gun in my history class and here is the main disadvantage but there were also a lot of advantages too. for instance the machine gun often over heated which caused a big problem because they weren't able to use them until they cooled back down. to cool them back down they usually put them in water but this could be a big problem if there weren't any water around.
Early machine guns such as Maxim and Vickers were water cooled and had distinctive jackets around their barrels, except models intended for installation on airplanes. Most later machine guns are air cooled to make them lighter and more portable.
manufaturey
It is hot and must be cooled before consumption.
Browning m1917 water cooled browning m1919 air cooled browning m2 .50 caliber machine gun
Riveting - when a solid fastener is placed in a drilled hole and expanded to hold an object in place. Welding - when a thin wire ('filler') is melted along with the area of bonding on the workpieces, which form a joint when cooled.