The effect of overheating

High-speed wire refers to wire steel rolled by a high-speed rolling mill. The wire is divided into two types: rebar and coil. According to the different rolling mills, some of the coils are divided into high-speed wire (high wire) and ordinary wire (normal wire).

The high-speed wire is rolled on a high-speed wire rod mill, with a fast production pace, a large coil (the coil is usually a whole coil, and the maximum coil weight can reach 2500kg), and the packaging is usually tight and beautiful.

High-speed wire refers to the wire rod rolled by a high-speed non-twist rolling mill. The rolling speed is 80-160 m/s, the weight (disk) is 1.8-2.5 tons, and the dimensional tolerance is high (up to 0.02mm). During the rolling process, the process parameters can be adjusted (especially in the cooling line). Above) to ensure the different requirements of the product.

General wire refers to the wire rod rolled by an ordinary rolling mill (usually a horizontal double-double rolling mill). The rolling speed is 20-60 m/s, and the weight (plate) of each piece is 0.4-0.6 tons (usually three pieces and six heads are a large plate on the market). During the rolling process, it can only be cooled by air on the cooling line. Or air cooling to ensure product performance. The general line is rolled by an ordinary rolling mill, and the weight of the coil is generally small. A package is usually packed by several coils, and the package is loose and messy.

The quality standards of the high-speed line and the normal line are the same, but the difference in the production line causes the difference in the appearance of the packaging. In layman's terms, there is only one connector in a bundle of wires, and a bundle of wires is whole without any disconnection in the middle. It doesn’t matter how many connectors there are on a normal line. Sometimes one is 10~20 meters long. It's hard to say how heavy it is! It can also be understood that the normal line is the leftovers of the high line, and the rest of the high line is made.

Characteristics of high-speed wire (high-speed wire)

It has high dimensional accuracy and small ellipticity.

It adopts collecting and distributing wind cooling, it has uniform composition and good mechanical properties.

Because of the negative tolerance rolling, it saves metal, and the length of the high wire of the same weight is longer than the normal wire.

Each piece has only one head and tail.

The high-speed line is generally 20-40 yuan/t more expensive than the normal line.