Metal Spray Welding Process

Wire arc spray is a form of thermal spraying where two consumable metal wires are fed independently into the spray gun.

Metal spray welding process.

Minute molten droplets of metal travel via the arc and on to the base metal or the joint being worked on. The droplets in this technique are minute and resemble that of water spouting out of a hose. Why apply arc spray coatings. Welders use the spray transfer method for most mcaw procedures.

Make offer metal powder spray welding torch gun oxygen acetylene flame welder qh 2 h usa. This article throws light upon the four main steps involved in the process of metal spraying. Spray transfer uses high voltage and amperage to produce an arc that is on at all times. Dry compressed air atomizes the molten material and forms the coating.

The heat from this arc melts the incoming wire which is then entrained in an air jet from the gun. Arc spray sometimes referred to as twin wire arc spray is a process that uses an electric arc to melt wires. Similar to globular transfer weld metal in the spray transfer method travels across an arc. The process can be semi automatic or automatic.

Metallising materials and their selection 3. These wires are then charged and an arc is generated between them. Metal powder spray welding torch gun oxygen acetylene flame welder qh 2 h usa. Thermal spray welding metalizing the spray process is an umbrella name for multiple processes.

Spray arc welding is one of the processes used to transfer metal from the electrode or wire to the weld. Along with the wire electrode a shielding gas feeds through the welding gun which shields the process from atmospheric contamination. A constant voltage d. Stoody jet spray welding torch kit model k hard facing 10lb powder 60tg 85tg.

The molten metal is then atomised with compressed air to create a spray stream that applies the coating onto the surface being sprayed. During the twin wire arc spray process twa two wires of conductive materials are charged with opposing polarity and are fed into an arc gun at the same speed. All involve the use of a coating material in the form of a wire rod or powder which is melted by one of the following sources of energy. Spray transfer is ideal for use on thicker metals for butt or fillet joints.

Coating characteristics and evaluation. The tips of the wires meet melt and become molten.