| Type: | Carbon Steel Bar |
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| Standard: | AISI, ASTM, GB, JIS, DIN, BS |
| Technique: | Hot Rolled |
| Application: | Structural Steel Bar, Tool Steel Bar, Die Steel Bar |
| Surface Treatment: | Color Coated |
| Alloy: | Alloy |
| Samples: |
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| Customization: |
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| Cold-Drawn Steel | ||||||||
| Cold drawn steel refers to the use of cold extrusion technology to pull various high-precision, smooth surface round steel, square steel, flat steel, hexagonal steel, and other shaped steel through precise molds. | ||||||||
| Characteristics of Cold Drawn Steel | Diversity of shape specifications By designing molds with different shapesDiversity of shape specifications By designing molds with different shapes, cold drawn steel with different cross-sectional shapes and specifications with different tolerances can be produced. Angles can be designed as right angles or rounded corners. High precision Use high-quality hard alloy molds and have professional mold repair personnel to ensure accurate and uniform tolerances. Smooth surface The advanced cold extrusion process makes the surface of cold drawn steel products smooth and bright. Significant material savings Cold drawing process is the process of cold extrusion deformation of raw materials to achieve the required shape, specifications, and tolerances. The consumption of raw materials is minimal, and compared to the material consumed by traditional lathe machining and cutting, the material saved by cold drawing steel is very considerable, especially when the material consumption is large, the cost savings of materials are more significant. Processing time and machinery savings Due to its accurate accuracy and good surface condition, cold drawn steel products can be directly used, such as spraying, sanding, bending, drilling, or directly electroplated after precise drawing according to actual requirements, saving a lot of machining time and the cost of configuring processing machinery. |
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| The use of cold drawn steel | The product is widely used in: Mechanical equipment: woodworking machinery, ceramic machinery, papermaking machinery, glass machinery, food machinery, construction machinery, plastic machinery, textile machinery, jacks, hydraulic machines, etc; Electrical product components: motor shaft, fan shaft, sewing machine shaft, etc; Furniture: Especially export metal furniture, such as coffee tables, chairs, and outdoor furniture; Metal tools: garden tools, barbecue grill racks, screws Anti theft locks, etc; Hardware accessories: such as guide rails, machine keys, nuts, screws, round nails, hexagonal nails, octagonal nails, and various standard parts of different specifications; Automobile, motorcycle parts, etc. |
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| Analysis of the effect of cold drawn steel | ||||||||
| 1. First cold drawing effect | Take a steel bar and apply tensile stress to it for cold drawing, and the steel bar will deform (and make a stress-strain diagram). As the tensile stress increases, the tensile stress borne inside the steel bars gradually increases. When the tensile stress generated inside the steel bar exceeds the yield point A of the steel bar and reaches C, stop cold drawing and remove the load. At this point, it can be seen that the steel bar has undergone plastic deformation. During the unloading process, there is a change in the stress-strain diagram, and the straight line O1C is slower than the straight line OA. | |||||||
| 2. Second cold drawing effect: | Re applying tensile stress, the steel bars were stretched to failure, and a new change appeared in the stress-strain diagram. The new yield point was near point C, significantly higher than the original yield point A. This change indicates that the plasticity of the steel bars has changed. The plasticity has decreased, the hardness has increased, and the strength of the steel bars has been improved. This phenomenon is called "deformation hardening". After the above two processes, the production of cold drawn steel (reinforcement) has been completed. | |||||||
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