সোজা লোহার তার

Steel wire drawing is a process of metal working by pressure. A strip or coil is drawed through a die or multiple dies in a row. Each die has a diameter smaller than the diameter of the input material, and the cross-sectional area of ​​the wire is reduced as it passes through each die. As a result, the cross-section of the wire is reduced, but the length of the wire increases or lengthens according to its new diameter.

Input material of stainless steel wire

Steel strips are selected as input materials for steel wire drawing technology. Steel coil width must be 700mm or more. When the strip is slitting from the coil, width will be about 100mm to facilitate cutting-rolling-scissors into steel wire products. If the material is a secondary product, size 355mm, it’s soft and can be brought into drawing without a slitting step.

The secondary steel can be used as input material. Usually this material will be imported in the form of a whole lot, with this type, the thickness and width will be different.

The above materials, which are standard materials for the rolling method, make the production process easier. The wire products when finished are from 1mm to 6mm in diameter. It is often used in the field of B40 mesh weaving, advertising shelves, making electric fan spokes, stamping all kinds…

In addition, the input materials can also be replaced with hot-rolled wire rod, imported from abroad. Using wire rod as input material for drawing steel wire requires soft material or SAE1006 or 1008B. This is also the material that is put into production without going through the cutting and rolling stage. From 5.5mm to 10mm in diameter, after drawing, a wire with a diameter of less than 1mm will be produced which can be steamed, electroplated, this process after the finished product is also known as stainless steel wire or zinc tie. In the case of pulling the right size rope for high-end fields such as motorcycle parts, hangers, bolts, etc.

In addition, other types: cables, purlin edges, handmade hot-rolled scraps… With these types often not used much, but in order to compete on price, some establishments still accept production.

The current method of testing the softness – hardness of materials is based on experience. Establishments often let their employees see the goods at the store first. Will experienced staff test the softness of rollable steel? The professional word “heavy-handed” refers to hardened steel.