With the development of the social construction industry, steel fiber, as a short fiber made of steel material, is widely used in construction projects such as highways and bridges, hydraulic dams, and railroad projects because of its excellent compressive, bending, wear resistance and crack resistance. As a professional Steel fiber manufacturer, the following will provide you with detailed answers to several standard production methods of steel fiber.

1. Steel wire cutting method.

Diameter of 0.4 ~ 0.8 mm cold-drawn steel wire, according to the specified length with a knife, punch, or rotary cut into short fibers. Cold-drawn steel wire made of steel fiber tensile strength of up to 1000-2000MPa. But its surface is smoother, and concrete or cement mortar matrix bungee strength is poor. To enhance the power of the steel fiber and the matrix bull, usually can change the shape of the steel fiber, that is, the production of shaped steel fiber method to solve. Its commonly used methods are.

(1) compression method. Before cutting off the steel wire, feed the steel wire into the rollers on the steel wire pressed out of the colorful pit before cutting.

(2) waveform method. Before cutting off the wire, use the clip feed rollers feeding the wire to press out the waveform before cutting off.

(3) Bending hook method. Before cutting off the wire, use the feed roller to press the bend at an equal distance and then cut off.

Steel fiber produced by cold-drawn steel wire cutting method is more expensive. Sometimes the cost can be reduced by waste steel wire rope disassembled and washed and cut into steel fiber processing. Steel fiber cross-section made of steel wire cutting method is round. It can also be deformed along the length of the steel fiber processing, processing into a large head of fiber.

2. Thin steel shear method.

Shear with cold-rolled thin steel plate. Before shearing, a unique small longitudinal shear machine will be cut into light cold-rolled steel plate strip volume, the width of the same length as the steel fiber. Then the strip volume will be continuously sent to the rotary or ordinary punching machine to cut into a rectangular cross-section of steel fiber. The strip's width determines the steel fiber's length, and the amount of knife feed determines the steel fiber cross-section during cutting and the thickness of the strip volume.

The axis of rotation and thin plate feeding direction are perpendicular to each other or at an angle, so the light steel plate shear method of production of shear steel fibers is generally twisted into a certain angle. The thin steel plate shear method using raw materials is usually annealed cold-rolled steel plates. You can also use an unannealed cold-rolled steel plate to improve the strength. Due to the high cost of cold-rolled steel, using the edges as raw materials often reduces costs. The thin steel plate shear method of production of steel fiber cross-section is rectangular. Along the length of the direction, it can also be made into a curved hook-shaped waveform and other shaped steel fibers.

3. Thick steel plate milling method.

Milling of thick steel plates or ingots with a rotating flat-bladed milling cutter. Milling steel fibers produce large deformation, axial distortion, and cross-sectional crescent-shaped, and the performance of concrete or cement mortar matrix bonding is good.

4. Molten steel wire drawing method.

Using an electric furnace to melt the recycled scrap steel into 1500 ~ 1600 ℃, and then on the surface of the steel, with a high-speed rotation of the molten extraction wheel close to the steel, the molten extraction wheel following the requirements of the required steel fiber size, carved out many grooves. When the melt extractor wheel descends to the steel-impregnated surface, the steel is scraped out by the slots, thrown out by centrifugal force with high-speed rotation, and cooled to shape at a breakneck speed. Water must be passed through the melt pumping wheel to maintain the cooling rate. The raw material of steel fiber produced by the melt pumping method is widely available scrap steel with low cost, simple manufacturing process, high production efficiency, and low price. At the same time, when the melt pumping method uses an electric furnace to melt the scrap steel into steel liquid, it can also adjust the chemical composition of the steel liquid to produce steel fibers of different materials. The size of the steel fiber can be changed by changing the size of the groove engraved on the melt pumping wheel and the speed of the melt pumping wheel. As the melt pumping method throws out the forming steel fibers, all exposed to the air, the superheated steel is easy to oxidize, forming a layer of shallow strength oxidation layer, weakening the steel fiber cross-section, the bond strength of steel fibers and concrete has a particular impact.

The above is about the steel fiber production method. If you need more detailed information, welcome to contact us!