In the process of achieving independent control over the components of CT tubes, the keyword "process" is repeatedly mentioned.

Craftsmanship is hard to focus on a single issue but touches upon many details. According to the research report of CITIC Securities, in the manufacturing process of CT tubes, extremely high requirements are placed on the maintenance of vacuum degree, welding process, assembly process and error control ability. Moreover, the stable mass production of CT tubes requires a long period of technological exploration and process refinement. The production processes such as surface treatment of parts, dynamic balance adjustment, welding and exhaust require a large accumulation of know-how Moreover, it is rather difficult to maintain a stable scrap rate.

According to industry insiders interviewed by 21st Century Business Herald, objectively speaking, there is still a certain gap between domestic technology and imported brands from abroad. It still takes time to improve the technology. For instance, whether the tube can achieve complete vacuum. Once an incomplete vacuum state occurs and oxygen is released, the tube will spark during use.

It is understood that the vacuum environment of CT tubes needs to be maintained throughout their entire life cycle. If the internal environment of the tube core is non-vacuum, high-voltage electrical sparking will occur, causing damage to the tube. This is an important challenge faced in the development of high-quality domestic CT tubes.

Apart from the above-mentioned issues, the difficulty in the research and development of high-end CT tubes may lie in the heat dissipation design. The above-mentioned industry insider analyzed that this is determined by the fundamental principle of the tube. The electrons emitted by the electron gun only need less than 1% of the energy to be converted into X-rays, which can have medical value. More than 99% of the energy is converted into heat, and almost all of this heat has to be dissipated by the target disk. So, how should the heat dissipation design of the tube be stopped? Just like the CT ball tubes of ordinary ball bearings, heat dissipation is the main difficulty. If it is a more precise liquid bearing, there will also be more requirements in various aspects.

The principle of the tube emitting rays is that the cathode is heated to emit electrons, which then strike the anode target at high speed to emit X-rays. The entire process keeps the tube in a state of high vacuum, high pressure, high heat and high speed. Although the principle by which X-ray tubes emit X-rays is simple, it is still very difficult to manufacture products with stable quality and long service life.