black annealed tie wire small coil

Black annealed tie wire small coil

Black annealed wire is also called black iron wire，soft annealed wire and annealed iron wire.It includes annealed wire and black oiled wire.Annealed wire is obtained by means of thermalannealing. It’s made of carbon steel wire. Annealed wire offers excellent flexibility and softness through the process of oxygen free annealing. And the black oiled wire is formed via the process of wire-drawing, anneal, and fuel oil injection. We can do it into straight cutting wire and also do according to customers' special requirement. Production process：The hot metal billet is rolled into steel bar, that is, wire rod, and then put it into the wire drawing device to draw wires with different diameters, gradually reduce the aperture of the wire drawing disc, and carry out cooling, annealing,plating and other processing processes to make iron wires of different specifications. It contains iron, cobalt, nickel, copper,carbon, zinc and other elements.

Production method

There are two kinds of drawing machine: powder drawing and water drawing. powder drawing is fit for junior drawing(6.5mm~4.0mm). One powder drawing machine has 4 tanks and 4 molds. One tank is matched with a mold. Each of them are offered energy by a electromotor. 0.9mm(max)can be “eat” when the wire cross a mold. There are no loss of weight during drawing. Anneal is to low the tensile strength of wire. The stove is solid and built with red bricks. The architecture of anneal stove is cuboid. Different thickness of wire require different temperature. Range is from 700℃to 900℃. Output of the anneal stove, the tensile strength is 400N~500N.

Package:

Each roll wrapped by hessain cloth or woven bag/ several rolls bundle or pallets