What are the advantages and disadvantages of titanium rod extrusion techniques?
Titanium rods can be processed using the extrusion and plastic deformation methods of the extrusion method. In order to give the titanium alloy blank good plasticity, it is first heated to the right temperature. The heated billet is then inserted into the extruder, where it is extruded through the extrusion head into the die channel to produce the desired titanium rod in its final shape and size. Contrasted and the moving technique, the expulsion strategy can more readily keep up with the grain structure and mechanical properties of titanium combinations.
Titanium rods are processed using the rolling method, which involves continuous rolling and plastic deformation. To start with, the titanium combination clear is warmed to a fitting temperature to give it great versatility. Then, the warmed billet is taken care of into the moving plant, and after different rolling and extending processes, a titanium bar of required width and length is at long last gotten. Titanium rods of varying sizes and properties can be produced during the rolling process by controlling rolling force and temperature.
The expulsion handling of titanium bars, titanium cylinders and titanium wires is a typical metal handling technique. Contrasted and other plastic handling techniques (such as rolling, etc.), the primary benefits of the expulsion strategy for expulsion handling are:
1. High production efficiency is one of the benefits of titanium rod, titanium tube, and titanium wire extrusion processing. Metal that can withstand large plastic deformations simultaneously and has a stronger compressive stress state in three dimensions when extruded can be processed for materials that are difficult to deform and have low plasticity. It can produce pipes and profiles with extremely complex cross-sections and variable cross-sections. These products are difficult or even impossible to process by other methods. The expulsion handling technique can rapidly misshape titanium materials into the ideal shape, subsequently further developing creation productivity and decreasing assembling costs. Moreover, expulsion handling can likewise finish numerous cycles in a single cycle, further developing creation effectiveness.
2. Extrusion processing can also provide excellent material properties. During the expulsion interaction, titanium materials are exposed areas of strength for to, which refines their grains and upgrades their mechanical properties. This diminishing impact expands the material's solidarity, hardness and erosion obstruction, making it more dependable and tough in different modern applications. The interaction stream is basic, the gear speculation is little, and it is generally simple to computerize the creation cycle.
3. Extrusion processing can also realize the manufacturing of complex shapes and has great production flexibility. One piece of equipment can produce products of many varieties and specifications, and product replacement is easy. The product has precise dimensions, high surface quality and good overall quality. Titanium rods, titanium tubes and titanium wires can be extruded into various complex shapes, such as special-shaped sections, thin-walled structures, etc. This flexibility makes extrusion processing widely used in fields such as aerospace, automotive manufacturing and medical devices.
Compared with other plastic processing methods (such as rolling, etc.), the main disadvantages of the extrusion method of titanium rod, titanium tube and titanium wire extrusion processing are:
1. The production efficiency is low. In an extrusion cycle, there are many auxiliary processes, which take a long time and the productivity is lower than that of rolling.
2. The loss of metal fixed waste is large and the yield is low. The residual pressure left at the end of extrusion and the end of extrusion are fixed losses, and the residual pressure alone accounts for 10% to 15% of the billet quality. During forward extrusion, because the length of the blank is limited (generally the ratio of the length to diameter of the blank does not exceed 3~4), and the fixed residual pressure loss cannot be reduced by increasing the length of the blank, the yield is low.
3. Tool consumption is large. The outstanding feature of the extrusion method is the high working stress, which can reach 10 times the metal deformation resistance. The pressure on the squeeze pad averages 400~800MPa, sometimes reaching 1000MPa or higher. Under the action of high temperature, high stress and high friction, the service life of the extrusion tool is much lower than that of the roller, and the tool consumption is greater.
4. Product performance is uneven. During extrusion, due to uneven deformation of the inner and outer layers of the billet and the front and rear ends, the structure and properties along the length and end face of the product are uneven.
The extrusion method is suitable for the production of non-ferrous metal tubes, rods, profiles and wire blanks in small batches and with a wide variety and specifications. Extrusion processing has high requirements on raw materials, and titanium alloy materials with good ductility and plasticity need to be selected. In addition, internal defects and surface defects may occur during the extrusion process, which require subsequent processing and inspection. For pipes and profiles with complex end faces or thin walls, ultra-thick-walled pipes with a ratio of diameter to wall thickness approaching 2, and brittle non-ferrous metals and special steel materials, extrusion is the only feasible pressure processing method.
