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water, it freezes when it is cold and turns to steam when it is hot.
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What is the process involved in making brass?
Brass is the combination of the metals copper and zinc. Its manufacturing process involves melting, hot rolling, annealing and cold rolling, and finish rolling.
Describe and explain the steel production?
When iron is smelted from its ore by commercial processes, it contains more carbon than is desirable. To become steel, it must be melted and reprocessed to reduce the carbon to the correct amount, at which point other elements can be added. This liquid is then continuously cast into long slabs or cast into ingots. 96% of steel is continuously cast, while only 4000 ingots are cast per year. The ingots are then heated in a soaking pit and hot rolled into slabs, blooms, or billets. Slabs are hot or cold rolled into sheet metal or plates. Billets are hot or cold rolled into bars, rods, and wire. Blooms are hot or cold rolled into structural steel, such as I-beams and rails. In modern foundries these processes often occur in one assembly line, with ore coming in and finished steel coming out. Sometimes after a steels final rolling it is heat treated for strength, however this is relatively rare. Hope this helped
Can you solder cold rolled steel?
I have found through experience that hot rolled steel will take 95/5% solder, and that cold rolled will not solder, reason is the cold rolled steel molecules are arranged differently that the hot roll, they are so to speak pushed into the final dimension with extreme pressure this also causes a so called hardened tempered surface on the cold roll steel that has to be annealed so that it can be drilled. cut or soldered.
How hot does it have to be to melt metal?
You need to define "metal"- since different metals have VERY different melting points. Mercury is melted at room temp. Gallium can melt in boiling water. Lead and tin are mixed as solder, and melt at fairly low temps. Gold and silver melt at moderate low temps. Aluminum is higher. Steels and hi temperature tungsten alloys will glow white hot before melting. So- which metal did you have in mind
Difference between Black mild steel and bright mild steel?
from what i can gather, which isn't alot:Cold Rolled Steel Strip is produced, as the term suggests by the further rolling of strip produced by the hot strip mills.Prior to cold rolling, the mill scale has to be removed, normally by the Pickling Process which uses mechanical manipulation (around small diameter rolls) and acid to dissolve the surface scale. The surface is then washed to remove the acid and a light oil added to prevent rusting.Mild steel sheet is manufactured generally in two grades, cold rolled and hot rolled.Hot rolled mild steel sheet is the initial product produced by the steel mill as a downstream process prior to further processing such as cold rolling.Hot rolled mild steel sheet has a mill scale which is usually black in colour. Hence the common name Black Mild Steel Sheet. Black mild steel sheet is commonly used in fabrication shops, it is more economical than cold rolled mild steel sheet.Black mild steel sheet will usually require more preparation work prior to any finishing system being applied.Cold rolling is done to:Reduce the thicknessImprove the surface finishImprove the thickness tolerancesTo offer a range of "tempers"As a preparation for surface coating
Murcury expands when it's hot but what expands when it's cold?
Water expands when it freezes and becomes ice.
When something is cold does it get bigger?
When something gets hot it expands and when it gets cold it'll contract
What does cold air have more than hot air?
Cold air is more dense than hot air. This is because gas expands when it is heated.
Why hot air contain more water than cold?
Hot air has more capacity than cold air (Air expands on heating.
Cline this freezing very cold boiling very hot lukewarm tepid cold hot warm?
freezing, very cold, cold, lukewarm, warm, hot, very hot, boiling
How were thermometers invented?
Mercury is put in a tube the Mercury expands when it is hot and compacts when cold.
What change takes place in the liquid inside a thermometer when the thermometer is placed into something cold?
The liquid in thermometers contracts when placed in something cold (and expands when placed in something hot.)
What word mean very hot and very cold?
FIRE for HOT andICE for COLD
How hot is Chile?
very,very hot/cold
Is 90 degrees Celsius hot or cold?
The words hot & cold are relative.90 c = 194 f.For humans, that temperature is very, very hot.Too hot for us to live.
How hot or cold is it in the Tasmanian rainforest?
it is very hot
Explain why a cold saucepan lid sometimes will not fit on a hot saucepan?
Depending on the type of metal your pan is made of, it usually expands when hot, putting a cold lid on it sometimes it will not fit.
