What is wire drawing process?

The wire-drawing process consists of pointing the rod, threading the pointed end through a die, and attaching the end to a drawing block. The block, made to revolve by an electric motor, pulls the lubricated rod through the die, reducing it in diameter and increasing its length.

What is wire drawing effect in steam engine?

Wire Drawing: It refers to the process of expansion of steam when no energy is expended. Steam, as it expands through any orifice or valve, does not perform any external work and as such does not undergo any loss of its heat energy.

What are the factors control the wire drawing process?

Deformation during wire/rod drawing is influenced by a number of factors which include steel chemistry, approach angle, lubrication, drawing speed, and reduction as the most significant.

What is wire drawing in compressor?

In wire drawing the diameter of a cylindrical piece of metal is reduced by pulling it through a tapered hole which is the internal profile of a drawing die. Deep drawing and pressing involve a combination of bending and stretching, for example the fabrication of a cup from a circular sheet blank.

What is wire drawing and bar drawing?

Bar or wire drawing is a deformation process in which the work piece in the form of cylindrical bar or rod is pulled through a converging die. The stress applied is tensile. A bar or rod is drawn down in order to reduce its diameter. In general, drawing results in reduction in area of cross-section.

What is wire drawing and tube drawing?

The process of wire drawing involves the production of wire of close diameter and tolerance by drawing descaled hot-rolled rod through a die. The finished wire is coiled onto a motor driven block. If large diameter reductions are required the rod is progressively drawn through several stages of dies and blocks.

How is metal drawn into wire?

The wire drawing process is quite simple in concept. The wire is prepared by shrinking the beginning of it, by hammering, filing, rolling or swaging, so that it will fit through the die; the wire is then pulled through the die. Very fine wires are usually drawn in bundles.

What is wire drawing in valves?

Wire drawing occurs when the valve disc and seat position operate for extended periods of time close to the shut-off point of the valve, and the water flow erodes or scores a pathway in the seating material that remains when the valve closes tight to the shut-off position.

What are wire drawing dies?

Wire drawing dies are tools with highly-polished, specially-shaped holes through which wire is drawn to reduce its diameter. They have a metal case and a nib made of: tungsten carbide (TC) polycrystalline diamond (PCD)

Why wire drawing is usually a cold working process?

Although similar in process, drawing is different from extrusion, because in drawing the wire is pulled, rather than pushed, through the die. Drawing is usually performed at room temperature, thus classified as a cold working process, but it may be performed at elevated temperatures for large wires to reduce forces.

What is wire drawing and bar drawing and explain how differences between wire and bar drawing?

Bar drawing is meant for large diameter bar and rod, while wire drawing is meant for small diameter stock. Wire sizes of the order of 0.03 mm are produced in wire drawing. Bar drawing is generally done as a single stage operation, in which stock is pulled through one die opening.

What is drawing in metal forming?

Drawing is a metalworking process that uses tensile forces to stretch (elongate) metal, glass, or plastic. As the metal is drawn (pulled), it stretches to become thinner, to achieve a desired shape and thickness.