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Tungsten Alloy Radiation Shielding

Views: 9     Author: Site Editor     Publish Time: 2021-09-14      Origin: Site

Compared with traditional iron, lead, cement and other shielding materials, the overall performance of tungsten alloy shields is superior. For example, under the same thickness and working environment, the shielding effect and service life of tungsten alloy shielding materials are better than traditional materials. Or longer. Moreover, it is also a non-toxic, environmentally friendly, and radioactive material, so it will not cause secondary damage to the ecological environment. The following mainly introduces the basic information of the alloy shield.

1. Definition

It is not only an alloy plate or alloy pot based on the transition metal tungsten, and cobalt, nickel and other metals as auxiliary materials, but also a device used to shield radioactive materials from harming human health or speed up the aging rate of chemicals.

2. Nature

It has a series of good characteristics such as high density, high strength, high hardness, wear resistance, heat resistance, corrosion resistance, oxidation resistance, non-toxicity and non-radioactivity. The reason why it has a stronger ability to resist radiation is mainly because of its higher density. However, it is also because of its high hardness that makes its machining very difficult.

3. Classification

According to different shapes, it can be divided into shielding plate, protective irrigation and so on.

According to the difference in blocking radiation, it can be divided into X-ray shielding materials, γ-ray shielding materials, proton shielding materials, etc.

According to different application fields, it can be divided into medical shielding parts, industrial shielding parts, nuclear shielding parts and so on.

4. Craftsmanship

1) Pour tungsten powder, nickel powder, copper powder, samarium powder, neodymium powder, silver powder, yttrium oxide and tin oxide together into a container, and then place it in a vacuum heating furnace for drying treatment to obtain powder; 2) 1) Pour the obtained powder into a ball mill mixer for mixing to obtain a mixed powder, and divide it equally into parts A, B and C; 3) Weave molybdenum wire and rhenium wire into molybdenum wire mesh and Rhenium wire mesh, spare; 4) Pour part A of the mixed powder in step 2) into the mold, flatten it, and then spread the molybdenum wire mesh, then pour part B of the mixed powder into the mold and flatten it. Then spread the rhenium wire mesh, and finally pour the mixed powder of C part, flatten it, carry out compression molding treatment, demoulding, and make a green body; 5) Place the green body in a sintering furnace for pressure sintering, cooling, and Obtain a sintered body; 6) Place the sintered body in a vacuum furnace for vacuum heat treatment, and then place the product in an argon-protected heating furnace for heat preservation, and then perform water quenching. This process is performed four times to obtain the shield.

5. Uses

It is used as an important raw material for shielding products such as radiation protection containers, medical collimators, shielding shields, shielding funnels, shielding blankets, X-ray collimators, X-ray flaw detectors, syringe protective covers, multi-leaf gratings, etc.

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