Classification of steel fibers

As an important material for reinforcing concrete, steel fibers come in many types and have different properties to meet the needs of different engineering environments. Its raw materials mainly use carbon steel and low-alloy steel, which have good mechanical properties and cost advantages.

In special environments with strong corrosiveness such as coastal areas and chemical industries, stainless steel with better corrosion resistance is preferred to extend service life and improve structural durability. At present, steel fibers widely used around the world can be divided into four categories:

The first is the high-strength steel wire cutting type. This type of steel fiber is made by cutting cold-drawn steel wire according to a predetermined length through precision cutting equipment. The fiber size is uniform and the tensile strength is high. It is the most common type and is widely used in industrial floors, tunnel linings and other fields.

The second is the thin plate shearing type, which is made by shearing cold-rolled thin steel strips. The edges are smooth and the shape is regular. It not only maintains a high strength, but also has good dispersion. It is suitable for occasions with high requirements for construction technology.

The third type is melt-drawn steel fiber, which has a unique process. The molten steel is thrown out by a rotating disc and cooled to form. The formed fibers are slender and naturally curved, which enhances the bonding performance with the concrete matrix.

The last is the ingot milling type, which uses a high-precision milling cutter to directly process short fibers on the surface of the ingot. The finished product has a uniform shape and a solid texture, which is suitable for high-demand structural components.

The above four types of steel fibers have their own advantages and disadvantages, and they play an irreplaceable role in many engineering fields such as industrial floors, bridges, high-speed railways, and water conservancy.