Characteristics and application of medical tungsten alloy shielding parts
1. Radiation therapy：The use of one or more ionizing radiation for the treatment of malignant tumors.
The shielding parts (collimators, multi-blade gratings, etc.) of radiotherapy equipment such as medical electron linear accelerator and cobalt-60 therapeutic machine are made of tungsten nickel iron alloy. Tungsten alloy shields can shrink the particle beam or light wave so that the particle rays shine in a specific direction, even though the space section of the beam becomes narrower and thus limits the amount of radiation.
2. Medical imaging：The use of CT scanner and other imaging equipment, through the precise alignment of X-ray beam, gamma rays, ultrasound, etc., to achieve a section of the human body scanning to obtain medical image technology.
The tungsten alloy tube, tungsten alloy sheet and tungsten alloy plate in the CT scanner can all play a good role in absorbing and shielding X rays and γ rays.
3. Radioactive tracer：The use of radionuclides for medical diagnosis and treatment.
A common tungsten alloy shield is a tungsten alloy syringe sleeve. It can protect a health worker's arm from radiation when giving drugs to a patient or when a scientist is developing a radioactive isotope.
Medical tungsten alloy shielding parts are widely used. This is closely related to its own excellent characteristics.
The characteristics of the easy medical tungsten alloy shield
1. Specific weight: density up to 18.8g/cm3.
2. Strong ray shielding ability: Under the same thickness condition, the ray shielding ability of tungsten alloy is more than 1.7 times that of lead, and the stronger the ray is, the more obvious the gap between the two ray shielding ability will be.
3. Environmental protection and non-toxic: the production and use of tungsten alloy shielding parts, will not harm human health; And lead is toxic.
4. High strength: tensile strength of 700-1000Mpa.
5. Good shaping, machinability and weldability.
6. Large thermal conductivity: thermal conductivity is 5 times of die steel.
