What is the high line?

High-speed wire rod is a kind of wire rod, which usually refers to the wire rod rolled by high-speed torsion-free rolling mill.

Common ones are ordinary low carbon steel wire rod (ZBH4403-88) and high quality carbon steel wire rod (ZBH44002-88). The rolling speed of high-speed wire rod is 80- 160m/s, the weight (disc weight) of each wire rod is 1.8-2.5t, and the dimensional tolerance accuracy is high (up to 0.02mm). In the rolling process, the different requirements of products can be ensured by adjusting the process parameters (especially on the cooling line).

The difference between high-speed wire rod, ordinary wire rod and semi-high-speed wire rod mainly lies in the production rolling speed and the number of joints. The rolling speed of high-speed wire rod is higher, and there is only one joint in a single plate. Compared with ordinary wire rod, it has the advantages of fast production pace, heavy plate weight (the maximum plate weight can reach 2500kg), tight turning and beautiful packaging. Ordinary wire rod refers to the wire rod rolled by ordinary rolling mill (usually tandem double-high rolling mill), the rolling speed is 20-60m/s, and the weight of each wire rod is 0.4-0.6t (three six-headed wires commonly seen in the market are a big plate).

Application of triangle middle and high line

In mathematics, the height line (or height and vertical line) of a triangle is a straight line perpendicular to the opposite side through one of its vertices, or a line segment from the vertex to the intersection with the opposite side. The intersection of the high line and the opposite side is called the vertical foot, and the length of the high line passing through a vertex is called the height of the triangle around the vertex (or around the opposite side).

The intersection of three high lines of a triangle at a point is called the vertical center of the triangle, which is generally denoted as H. The three high lines and vertical centers of an acute triangle are on the inside, the vertical center of a right triangle is the opposite vertex (right vertex) of the hypotenuse, and the vertical center and two high lines of an obtuse triangle are on the outside. The point p on the intersection plane is perpendicular to each side of the triangle and intersects this side at a point (vertical foot). The triangle connected by these three points is called the vertical triangle of point P.

Above content reference: Baidu Encyclopedia-High Line