Tungsten tube is widely used in high-end fields due to its excellent high temperature resistance and corrosion resistance. In order to improve its processing accuracy, it is necessary to exert efforts in multiple links.
First of all, the selection of raw materials is crucial. Tungsten powder with high purity and uniform particle size should be selected as raw material. High-purity tungsten powder can reduce the interference of impurities on the forming and performance of tungsten tube, and tungsten powder with uniform particle size is more conducive to ensuring the consistency of tube wall thickness in subsequent forming processes. For example, advanced powder screening technology is used to screen out tungsten powder that meets a specific particle size range, laying the foundation for the processing of high-precision tungsten tube.
In terms of forming process, for the extrusion forming of tungsten tube, the extrusion force and extrusion speed must be precisely controlled. Appropriate extrusion force can ensure that the tungsten powder is tightly combined to form a uniform tube blank. And a stable extrusion speed helps to avoid defects such as uneven internal structure of the tube blank or cracks caused by excessive speed. At the same time, the use of high-precision molds is the key. The dimensional accuracy and surface finish of the mold directly affect the shape accuracy of the tungsten tube. The mold should be inspected and maintained regularly to ensure that its accuracy meets the processing requirements.
The sintering process also has a significant impact on the processing accuracy. The use of advanced vacuum sintering or hot isostatic pressing sintering technology can effectively reduce the porosity of the tungsten tube and improve its density. During the sintering process, strictly control the sintering temperature, time and atmosphere and other parameters. Accurate temperature control can avoid deformation of the tungsten tube due to excessive temperature, and too long or too short sintering time will affect the performance and dimensional accuracy of the tungsten tube.
In the machining stage, for the cutting, turning and other operations of the tungsten tube, the use of high-precision machine tools is an inevitable requirement. These equipment must have a high-rigidity, high-precision motion control system and be equipped with advanced tools. For example, the use of diamond tools for turning can effectively reduce the roughness of the machined surface and improve the dimensional accuracy and surface quality of the tungsten tube. At the same time, optimize the processing parameters, such as cutting speed, feed rate and cutting depth, and determine the best combination of processing parameters through a large number of tests and simulations.
In the detection link, introduce advanced non-destructive testing technologies, such as ultrasonic testing and industrial CT testing. These technologies can accurately detect internal defects, changes in wall thickness, and dimensional deviations without destroying the tungsten tube. According to the test results, adjust the processing technology in time to ensure that the processing accuracy of the tungsten tube meets high-end needs.
Surface treatment is also an important part of improving the accuracy of the tungsten tube. Use precision grinding, polishing and other surface treatment processes to reduce surface roughness, improve surface flatness, and further improve the accuracy and appearance quality of the tungsten tube. At the same time, appropriate surface treatment can also improve the corrosion resistance and other properties of the tungsten tube, meeting the requirements of high-end application scenarios for the comprehensive performance of the tungsten tube.
Finally, the professional quality and operating specifications of the personnel should not be ignored. Processing personnel need to undergo professional training, be familiar with the various links and process requirements of tungsten tube processing, and strictly follow the operating specifications for processing to avoid the decrease in processing accuracy due to human factors.
