The production method of metal square rods and tungsten bars usually includes the following steps:

Material selection: The process starts with selecting high-quality raw materials, such as tungsten carbide for square rods and tungsten metal for tungsten bars. The purity and quality of raw materials significantly affects the performance of the final product. Mixing and blending: For tungsten carbide square rods, the tungsten carbide powder is mixed with a binder material (usually cobalt or nickel) to form a homogeneous mixture. The mixture is usually mixed in a controlled environment to achieve a uniform distribution of carbide particles within the binder matrix. Tungsten strip is made of tungsten metal and can be sintered or rolled. Compaction: The mixed powder or raw material is then subjected to a compaction process, such as cold pressing or injection molding, to form square bars or strips of the desired shape. Compaction helps achieve the original shape and density of the product. Sintering: The compacted shape is then sintered in a high-temperature furnace under controlled atmospheric conditions. During the sintering process, powdered metal particles bond together to form a dense and strong structure. For tungsten carbide square rods, the sintering process helps bond the tungsten carbide particles with a metal binder, creating a hard and wear-resistant material. Shaping and finishing: After sintering, parts may undergo additional shaping processes such as grinding, milling, or cutting to achieve final dimensions and surface finish. Tungsten strip can also undergo a rolling process to obtain the desired thickness and flatness. Quality Control: Throughout the production process, quality control measures are implemented to ensure that square rods and tungsten bars meet the specified mechanical and metallurgical properties. This may involve various testing methods such as dimensional inspection, hardness testing and microstructural analysis. Final Inspection and Packaging: Once the square bars and tungsten bars meet the required standards, final inspection is conducted to verify their quality. They are then usually packaged and prepared for shipping to customers or storage.

Overall, the production methods of metal square rods and tungsten bars involve precision manufacturing techniques and strict quality control to ensure that the final product has the required hardness, wear resistance, and dimensional accuracy.