Precautions in the extrusion process of brass rods

During the extrusion process of the brass rod, the ingot is subjected to three-way compressive stress in the extrusion cylinder and can withstand a large amount of deformation; when extruding, it should be based on the characteristics of the alloy, the specifications and technical requirements of the extruded product, the capacity of the equipment and the Structure, rational design of mold, selection of extrusion process parameters. Including ingot specifications, extrusion ratio, extrusion temperature, extrusion speed, etc. In order to ensure and improve the surface quality of extruded products, peeling extrusion is often used during copper alloy extrusion to remove defects on the surface of the ingot.

For precipitation-strengthened alloys, water-seal extrusion can be used to achieve solution treatment before cold deformation in the extrusion process. All-copper mesh experts said that for ordinary alloys, water-sealing extrusion can reduce the surface oxidation of the product and avoid the re-pickling of the product.

Horizontal forward extrusion is the most traditional and common extrusion method. The main problem when it squeezes the pipe is the two cores of the pipe. Reverse extrusion can not only reduce the degree of eccentricity, but also extrude long ingots and improve the yield. Vertical extrusion has the lightest degree of eccentricity, but the length of the extrusion is limited. The continuous extrusion process is short, the volume is heavy, and it can produce large-length products: it is especially suitable for the production of special-shaped products: the product yield is high, up to 90-95%: less metal consumption, low energy consumption, small equipment investment, and land occupation less, convenient for continuous production, and environmental protection. With the technological breakthrough of continuous extrusion technology in product width, this method has been in the development and application stage in the production of oxygen-free copper and pure copper strip. The main problem with this method is the short mold life. How to improve the mold design and improve the life of the mold material needs to be solved.