Cold working is the plastic deformation of metals below the recrystallization temperature. In most cases, such cold forming is done at room temperature. The major cold-working operations can be classified basically as squeezing, bending, shearing and drawing.
The neutral flame is the flame in which the amount of oxygen is precisely enough for burning, and neither oxidation nor reduction occurs. A flame with a good balance of oxygen is clear blue. The reducing and neutral flames are useful in soldering and annealing.
The neutral flame has a one-to-one ratio of acetylene and oxygen. It obtains additional oxygen from the air and provides complete combustion. It is generally preferred for welding.
The width of slot cut by a hacksaw blade is _______ the width of the blade.
The instrument which has all the features of try-square, bevel protractor, rule and scriber, is combination set.
The combination square set is a measuring tool which is designed primarily for measuring angles and lengths.
It is used by people working in a number of different trades, including woodworkers and engineers.
In a hot chamber die casting machine Nonferrous alloys with low melting temperature are casted.
In hot chamber machinery contains the alloy melting pot as part of the machine itself and uses a gooseneck to inject material from the pot into the die.
Materials used in hot chamber die casting are zinc, lead and magnesium alloys.