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What are the Physical or hazardous agents present in a steel rolling mill and how can they be dealt with?
Hazards in a steel rolling mill include:intense heathot metal contactsmoke and fumesloud noiseheavy objects to be movedpotential for being caught in a pinch point and dragged into the machinery
What are Changes takes place in grains of steel during rolling and annealing?
Prior to the rolling of steel, the grains of the steel are oriented in long strands of caribides in the billet form. When this billet goes through the rolling process, these strands are compressed and broken up into shorter bands. This rolling process densifies the steel and thereby work hardens the steel. These work hardened grains become too hard for any further rolling to take place and they must be annealed. The annealing process entails heating the bar or billet to about 1600 degrees F and holding for a long period of time. Through annealing, the steel grains are softened so that additional rolling can be performed. For additional information on the rolling and annealing of steel, terminology or the properties of steel, see the related link.
Difference between rolling process and re rolling process?
a metal rolling mill ia a much larger unit compared to a re rolling mill in terms of variety of products(L,T,I,channel ,rail track& rods sections) & product volume.'ingots'(a large cross section steel casting about 600x600mm) are rolled into' blooms' (150x150 to 400x400).blooms are rolled to billets(40x40 to150x150).these billets are input for re rolling mills which usually produce the mild steel rods from the bilets mainly for civil construction work.the process of rolling however remains the same for rolling & re rolling.some re rolling units however use thge induction furnaces to prepare their own small ingots to be rolled into rods.here the size of the unit is very small compared to rolling mills.
Is standard for rolling margin of steel?
what is The IS code for rollingmarginof structural steel and % ofallowablelimit as rollingmargin.
What is ttenxic?
this is asubstence of water and steel combined with curry powder and a pinch of runescape
What is pickling steel?
You probably meant pickled steel. Pickled steel is steel that has been washed in acid to remove surface corrosion before enter the next processing step in a factory (e.g. forging. stamping, rolling). The process of washing the steel in acid is called pickling. Once pickled the steel is rinsed in water to remove excess acid.
What is the process that steel goes through to be galvanized?
This answers is for coiled steel strips. Steel strips, after rolling in coil form, are sent to a "Galvanizing Line". The most common and economically viable is "Continuous Hot Dip Galvanizing Line". The steel, after rolling is "Annealed" at required temperature to relieve stresses developed after rolling. After annealing the strip is passed through a "Galvanizing Pot" containing molten zinc. The thickness of coating generally varies from 30 - 300 gm/cm2. The coating thickness is controlled by "Air knives" using air or nitrogen blowers. The coated strip is then "Passivated" using either Chromating liquid or Non-toxic passsivating compounds. For good surface quality, the strip is often skin passed in a rolling mill stand and then tension levelled in a levelling unit after zinc coating. Another process, which is superior to this process is Electro-Galvanizing using an electrolytic process.
Is hot-rolled steel magnetic?
Yes, hot-rolled steel is magnetic. A few types of steel have limited magnetic properties, but hot rolling is a process by which steel is prepared in a shape for marketing. The hot rolling does not affect the ability of the steel to be attracted to a magnet.
What process created steel?
The Bessemer process created steel.
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
Can you get a business partner in steel re-rolling mill in Pakistan?
can i get a business partner in stell re-rolling mill in Pakistan
Which code specifies rolling margin of reinforcement steel?
Is 1786-1985
