Cold-proof flat steel bar

Overview: Flat steel refers to steel with a width of 12-300mm, a thickness of 3-60mm, a rectangular cross-section and slightly blunt edges. Flat steel can be finished steel, or can be used as blanks for welded pipes and thin slabs for laminated thin plates. Main uses: As finished products, flat steel can be used to make hoops, tools and mechanical parts. It can also be used as structural components of house frames and escalators in construction.

Features:

1. Product specifications are special. The thickness is 8~50mm, the width is 150-625mm, the length is 5-15m, and the product specifications are closely spaced, which can meet the needs of users. It can be used in place of the middle plate and can be welded directly without cutting.

2. The surface of the product is smooth and clean. The high-pressure water descaling process is used twice in the process to ensure that the surface of the steel is smooth and clean.

3. Both sides are vertical and the corners are clear. The two-pass vertical rolling in the finishing rolling ensures good verticality of both sides, clear corners and good edge surface quality.

4. The size of the product is accurate, with a three-point difference, and the same grade difference is better than the steel plate standard; the product is straight and has a good shape. Finish rolling adopts continuous rolling process and automatic looper control to ensure that there is no stacking or drawing of steel. The product has high dimensional accuracy. The tolerance range, three-point difference, same-line difference, sickle bend and other parameters are better than those of the medium plate, and the plate shape is straight. Good degree. Cold shearing, high precision in length determination.

5. The product material adopts national standards, which is the same as steel plate. The quality and technical standards are organized in accordance with YB/T4212-2010 standards (Q345B/Q235B refer to GB/T1591-94 and GB/T700-06 standards respectively)

1. Flat steel is rolled with negative deviation, but is delivered according to the actual weight. The utilization rate is 1 to 5 percentage points higher than that of steel plates.

2. Flat steel can be produced in fixed thickness, fixed width and fixed length according to user's needs, which reduces cutting and process for users, reduces the consumption of labor and materials, and also reduces the processing loss of raw materials, saving time and effort. , save materials. Products have been professionally used in steel structure manufacturing, machinery manufacturing, automobile industry, mining machinery, hoisting machinery and other industrial materials

Process flow: Precision flat steel production process The working principle of the flat steel finishing machine is to pre-level and final level the cold flat steel wool in the thickness direction with two sets of leveling wheels staggered up and down; The finishing wheel squeezes the width direction so that the width is compressed to reach the expected parameters. The amount of compression is adjustable; 5 staggered straightening wheels are used to straighten the width direction. This system is mainly composed of a control box, finishing pressure roller, pre-leveling unit, finishing unit and straightening unit. The production process can be summarized as: pre-leveling → finishing → straightening → post-leveling. Flat steel/a/b is a steel material with a width of 12-300mm, a thickness of 4-60mm, and a rectangular cross-section with slightly pure edges. Flat steel can be finished steel, or can be used as blanks for welded pipes and thin slabs for laminated thin plates. Main uses: As finished products, flat steel can be used to make iron hoops, tools and mechanical parts, and can be used as structural components of house frames and escalators in construction. Flat steel is divided into two types according to its shape: flat spring flat steel and single-sided double groove spring flat steel. Hot-rolled spring flat steel is mainly used to manufacture leaf springs for automobiles, tractors, railway transportation and other machinery.