Question

Generally heating on metals

Answer 1

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➡Generally heating on metals they get melt.

Answer 2

Answer:

Before modern metalworking techniques were invented, blacksmiths used heat to make metal workable. Once the metal was formed into the desired shape, the heated metal quickly was cooled. Quick cooling made the metal harder and less brittle.​ Modern metalworking has become much more sophisticated and precise, allowing for different techniques to be used for different purposes.

Effects of Heat on Metal

Subjecting metal to extreme heat causes it to expand in addition to impacting its structure, electrical resistance, and magnetism. Thermal expansion is pretty self-explanatory. Metals expand when subjected to specific temperatures, which vary depending on the metal. The actual structure of metal also changes with heat. Referred to as allotropic phase transformation, heat typically makes metals softer, weaker, and more ductile. Ductility is the ability to stretch metal into a wire or something similar.

Heat also can impact the electrical resistance of metal. The hotter the metal gets, the more the electrons scatter, causing the metal to be more resistant to an electrical current. Metals heated to certain temperatures also can lose their magnetism. By raising temperatures to between 626 degrees Fahrenheit and 2,012 degrees Fahrenheit, depending on the metal, magnetism will disappear. The temperature at which this happens in a specific metal is known as its Curie temperature.

Explanation: