Asked by Andy Blackwell in Uncategorized
What are the important contents on rolls for cold rolling?
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What is a rolling mill?
In metalworking, rolling is a metal forming process in which metal stock is passed through a pair of rolls. Rolling is classified according to the temperature of the metal rolled. If the temperature of the metal is above its recrystallization temperature, then the process is termed as hot rolling. If the temperature of the metal is below its recrystallization temperature, the process is termed as cold rolling. In terms of usage, hot rolling processes more tonnage than any other manufacturing process and cold rolling processes the most tonnage out of all cold working processes
Asked in Technology
What is mean of 'hi' in cold rolling mill Specification?
Asked in Mechanical Engineering
Why does cold rolling decreases hardness?
Asked in Mechanical Engineering, Manufacturing
Does hot rolling create greater drafts or does cold rolling?
Asked in Plastics and Polymers
Why does an plastic container keep the contents cold than a metal container?
Asked in Mechanical Engineering, Science, Manufacturing
What is a difference between hot roll and cold roll?
Asked in Science
How does a thermos keep its contents hot or cold?
Thermos is made in a double layered structure with space for air in between. The interior and exterior are both made of heat insulating materials. The air in between these two layers slows down the heat transfer inside and outside substantially too. Thus hot contents remain hot and cold contents remain cold.
Into what classifications is rolling mill machinery divided?
What is cold roll?
Cold rolling is simply crushing the steel into thin plates (done using large rollers) when the steel is at a low temperature. Cold rolled, grain oriented (CRGO) silicon steel is often used in transformer cores. When Steel is heated (annealing), the silicon - iron crystals become aligned. Cold rolling crushes the crystals into random positions. This helps minimize stray losses in transformers, making them more efficient. A non-electrical application of cold rolling is in the making of samurai swords.
Which steel is expensive hot rolled or cold rolled?
It takes much more energy to roll a sheet of metal in cold rolling than it does for hot rolling. Heating up a sheet of metal makes the material more malleable, so when it is rolled between two rollers, it can form into a flat sheet much easier. A cold sheet of metal that is not heated up will be put through the rollers and have a higher amount of energy needed to push it through. Though there is less heating required, this is balanced out by the fact that it must be pushed through with more energy.The cold rolling process is an expensive one, especially compared to the process of hot rolling sheet metal. For example, since cold rolling requires that workers frequently clean parts like the rollers, cold rolling has extra costs for any supplies needed to clean the parts, downtime while the parts are being cleaned and labor costs for the worker who does the cleaning. Also, the additional energy needed in the cold rolling process adds cost to the final product. call me if u need more: 0784971498
Asked in Elements and Compounds
What is the process called when metals are rolled into thin sheets like aluminum foil?
The process of rolling metals into sheets is called (no surprise) rolling. The metal is passed through a rolling mill and is reduced in size in steps. The metal might be hot rolled or cold rolled, and the choice of process depends on the metal and on what the finished product needs to be like. In the case of aluminum foil, a block of aluminum is first hot rolled, and the metal is passed through the rolling mill a number of times until it is thin enough to be rolled and moved to a cold rolling mill. In the cold rolling mill, it goes through a number of roller sets until the desired thickness is achieved.
Asked in Science
The extent of cold work that a metal can withstand depends on?