CN115874072A - Preparation method of ray shielding material of electron irradiation accelerator - Google Patents
Preparation method of ray shielding material of electron irradiation accelerator Download PDFInfo
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- CN115874072A CN115874072A CN202111153842.7A CN202111153842A CN115874072A CN 115874072 A CN115874072 A CN 115874072A CN 202111153842 A CN202111153842 A CN 202111153842A CN 115874072 A CN115874072 A CN 115874072A
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- electron irradiation
- irradiation accelerator
- shielding material
- preparing
- metal
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- 239000000463 material Substances 0.000 title claims abstract description 45
- 238000002360 preparation method Methods 0.000 title abstract description 6
- 238000000034 method Methods 0.000 claims abstract description 35
- 229910052751 metal Inorganic materials 0.000 claims abstract description 34
- 239000002184 metal Substances 0.000 claims abstract description 27
- 239000000956 alloy Substances 0.000 claims abstract description 24
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 22
- 238000002844 melting Methods 0.000 claims abstract description 19
- 230000008018 melting Effects 0.000 claims abstract description 19
- JFALSRSLKYAFGM-UHFFFAOYSA-N uranium(0) Chemical compound [U] JFALSRSLKYAFGM-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000000137 annealing Methods 0.000 claims abstract description 10
- 229910052770 Uranium Inorganic materials 0.000 claims abstract description 9
- 230000005855 radiation Effects 0.000 claims abstract description 7
- 239000011159 matrix material Substances 0.000 claims abstract description 4
- 238000010894 electron beam technology Methods 0.000 claims description 8
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical group [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 7
- 239000010936 titanium Substances 0.000 claims description 7
- 229910052719 titanium Inorganic materials 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 6
- 230000006698 induction Effects 0.000 claims description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 4
- 238000003723 Smelting Methods 0.000 claims description 4
- 238000007599 discharging Methods 0.000 claims description 4
- 229910052750 molybdenum Inorganic materials 0.000 claims description 4
- 239000011733 molybdenum Substances 0.000 claims description 4
- 238000003756 stirring Methods 0.000 claims description 4
- 239000006104 solid solution Substances 0.000 claims description 3
- 238000005482 strain hardening Methods 0.000 claims description 2
- 230000000694 effects Effects 0.000 abstract description 2
- 230000002633 protecting effect Effects 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 239000004567 concrete Substances 0.000 description 2
- 239000011133 lead Substances 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 238000004659 sterilization and disinfection Methods 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000005684 electric field Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 229910010272 inorganic material Inorganic materials 0.000 description 1
- 239000011147 inorganic material Substances 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000002861 polymer material Substances 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000001954 sterilising effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention belongs to the technical field of radiation protection, and particularly relates to a preparation method of a ray shielding material of an electron irradiation accelerator. The method adopts metal uranium as a matrix material; adding other metal elements into the base material by a vacuum melting method to form an alloy; and carrying out vacuum annealing treatment on the alloy for processing. The invention solves the technical problem that the shielding material of the electron irradiation accelerator in the prior art occupies large space, can obviously reduce the volume of the shielding body on the premise of fully ensuring the ray shielding and protecting effects of the electron irradiation accelerator, achieves the effect of greatly saving the effective space of the electron irradiation accelerator, and can provide shielding conditions for the mobile electron accelerator.
Description
Technical Field
The invention belongs to the technical field of radiation protection, and particularly relates to a preparation method of a ray shielding material of an electron irradiation accelerator.
Background
An electron irradiation accelerator, also called an electron beam irradiation device, is a particle acceleration technology represented by an electron beam irradiation device, and the electron beam irradiation technology is a new processing technology and process, wherein a substance is irradiated by electron rays accelerated in a high-voltage electric field, and molecules of various substances are ionized and excited through interaction between high-energy electrons and the substance, so that the material performance is improved or a new material is produced by initiating a reaction. The electron beam irradiation technology is used for improving the performance of high polymer materials, semiconductor materials, inorganic materials and metal materials, and developing related technologies such as sterilization, disinfection and the like. The electron beam irradiation technique and other advanced high voltage application techniques are popularized as "green technologies" which are beneficial to environmental protection.
The shielding structure of the electron irradiation accelerator is generally divided into a concrete shielding mode and a self-shielding mode, wherein the self-shielding mode generally adopts a steel material and a lead material for shielding. The shielding layer made of steel, lead and concrete occupies a very large space, so that the effective space of the electron irradiation accelerator is greatly wasted, and the shielding condition for the mobile electron accelerator is difficult to realize.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the shielding material of the electron irradiation accelerator in the prior art occupies a large space, causes great waste of effective space, and is difficult to realize providing shielding conditions for the mobile electron irradiation accelerator.
The technical scheme of the invention is as follows:
a method for preparing a ray shielding material of an electron irradiation accelerator comprises the following steps: step S1: metal uranium is used as a matrix material. Step S2: and adding other metal elements into the base material by adopting a vacuum melting method to form an alloy. And step S3: and carrying out vacuum annealing treatment on the alloy for processing.
As a preferable scheme: in step S1, the uranium metal is a depleted uranium metal. Depleted uranium used in step S1Metal of which 235 The content of U isotope is less than 0.4 percent.
As a preferable scheme: in step S2, the vacuum melting method is an arc melting method, an induction melting method, or an electron beam melting method. In step S2, the other metal element is a metal element that can form a solid solution with the base material and can improve the strength of the base material.
As a preferable scheme: in step S2, the other metal element is titanium or molybdenum.
As a preferable scheme: in step S2, the density of the formed alloy is 18g/cm or more 3 。
As a preferable scheme: in step S3, a metal cold working or hot working method is adopted for processing.
As a preferable scheme: smelting 100kg of depleted uranium metal and 10kg of metallic titanium in a vacuum induction furnace, stirring after complete melting, then cooling, and discharging after complete cooling; and carrying out vacuum annealing treatment on the alloy discharged from the furnace at 1000 ℃/12 h. After the alloy is discharged and before vacuum annealing is carried out, the alloy density is checked.
The invention has the beneficial effects that:
the method for preparing the ray shielding material of the electron irradiation accelerator takes the special material as the base material, adds a certain proportion of metal elements to form a special alloy with a certain component, and the alloy is taken as the shielding material of the electron irradiation accelerator, so that the volume of the shielding body can be obviously reduced on the premise of fully ensuring the ray shielding and protecting effect of the electron irradiation accelerator, and the effect of greatly saving the effective space of the electron irradiation accelerator is achieved.
The shielding body formed by the method for preparing the ray shielding material of the electron irradiation accelerator has small volume and is convenient to move, and shielding conditions can be provided for the mobile electron accelerator.
According to the preparation method of the ray shielding material of the electron irradiation accelerator, titanium and molybdenum are selectively added into the base material, so that the special alloy has the beneficial effect of high strength.
Detailed Description
The following examples are provided to illustrate the preparation of the radiation shielding material of the electron irradiation accelerator of the present invention in detail.
Example 1
In the method for preparing the radiation shielding material of the electron irradiation accelerator in this embodiment, the metal uranium is used as a base material, and other metal elements are added to the base material to form an alloy.
Specifically, the method comprises the following steps:
step S1: metal uranium is used as a matrix material. The uranium metal in step S1 is a uranium depleted metal, which 235 The U isotope content is preferably less than 0.4%.
Step S2: and adding other metal elements into the base material by adopting a vacuum melting method to form the alloy. In step S2, the vacuum melting method may adopt, but is not limited to, arc melting, induction melting, electron beam melting, and the like, so that the base material and other metal elements can form an alloy with uniform components. The other metal to be added is preferably a metal element such as titanium or molybdenum which can form a solid solution with the base material and can improve the strength of the base material. The density of the formed alloy is more than or equal to 18g/cm 3 。
And step S3: and carrying out vacuum annealing treatment on the alloy for processing. In the step S3, required shielding material parts and parts are prepared by metal cold processing, hot processing and the like such as casting, forging, machining and the like, the structural requirements of the shielding body parts are met, and the radiation shielding parts and parts are provided for the electron irradiation accelerator with certain energy.
Example 2
This example differs from example 1 in that:
smelting 100kg of depleted uranium metal and 10kg of metallic titanium in a vacuum induction furnace, stirring by using a stirring device of smelting equipment after complete melting, then casting in a mould, cooling, and discharging after complete cooling.
Sampling and detecting after discharging the alloy material to reach 18.6g/cm 3 。
And carrying out 1000 ℃/12h vacuum annealing treatment on the alloy material after being discharged from the furnace.
And after the annealing is finished, machining according to the drawing required by the shield part.
While the embodiments of the present invention have been described in detail, the embodiments are merely exemplary embodiments of the present invention, but the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.
Claims (10)
1. A method for preparing a ray shielding material of an electron irradiation accelerator is characterized by comprising the following steps: the method comprises the following steps:
step S1: metal uranium is adopted as a matrix material;
step S2: adding other metal elements into the base material by adopting a vacuum melting method to form an alloy;
and step S3: and carrying out vacuum annealing treatment on the alloy for processing.
2. The method for preparing a ray-shielding material of an electron irradiation accelerator according to claim 1, wherein: in step S1, the metal uranium is depleted uranium metal.
3. The method for preparing a ray-shielding material of an electron irradiation accelerator according to claim 2, wherein: depleted uranium metal used in step S1, which is 235 The content of U isotope is less than 0.4 percent.
4. The method for preparing a radiation shielding material of an electron irradiation accelerator according to claim 1, wherein: in step S2, the vacuum melting method is an arc melting method, an induction melting method, or an electron beam melting method.
5. The method for preparing a ray-shielding material of an electron irradiation accelerator according to claim 1, wherein: in step S2, the other metal element is a metal element that can form a solid solution with the base material and can improve the strength of the base material.
6. The method for preparing a ray-shielding material of an electron irradiation accelerator according to claim 5, wherein: in step S2, the other metal element is titanium or molybdenum.
7. The method for preparing a ray-shielding material of an electron irradiation accelerator according to claim 1, wherein: in step S2, the density of the formed alloy is more than or equal to 18g/cm 3 。
8. The method for preparing a ray-shielding material of an electron irradiation accelerator according to claim 1, wherein: in step S3, a metal cold working or hot working method is adopted for processing.
9. The method for preparing a ray-shielding material of an electron irradiation accelerator as claimed in claim 7, wherein: smelting 100kg of depleted uranium metal and 10kg of metal titanium in a vacuum induction furnace, stirring after complete melting, then cooling, and discharging after complete cooling; and carrying out vacuum annealing treatment on the alloy discharged from the furnace at 1000 ℃/12 h.
10. The method for preparing a radiation shielding material of an electron irradiation accelerator as claimed in claim 9, wherein: after the alloy is discharged and before vacuum annealing is carried out, the alloy density is checked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111153842.7A CN115874072A (en) | 2021-09-29 | 2021-09-29 | Preparation method of ray shielding material of electron irradiation accelerator |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111153842.7A CN115874072A (en) | 2021-09-29 | 2021-09-29 | Preparation method of ray shielding material of electron irradiation accelerator |
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| CN115874072A true CN115874072A (en) | 2023-03-31 |
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| CN202111153842.7A Pending CN115874072A (en) | 2021-09-29 | 2021-09-29 | Preparation method of ray shielding material of electron irradiation accelerator |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1279471A (en) * | 1968-10-24 | 1972-06-28 | Siemens Ag | Thermoelectric generators |
| EP0628968A1 (en) * | 1992-12-11 | 1994-12-14 | Sanoya Industries Co., Ltd. | RADIATION-BARRIER MATERIAL CAPABLE OF SIMULTANEOUS SHIELDING AGAINST $g(g)-RAY, X-RAY AND NEUTRON BEAM |
| CN106929732A (en) * | 2015-12-31 | 2017-07-07 | 中核北方核燃料元件有限公司 | A kind of smelting preparation method of U-Mo alloys |
| CN106925740A (en) * | 2015-12-31 | 2017-07-07 | 中核北方核燃料元件有限公司 | A kind of centre spinning method of large-scale depleted uranium flywheel |
| CN112863721A (en) * | 2020-12-31 | 2021-05-28 | 中核北方核燃料元件有限公司 | Uranium-based neutron gamma composite shielding material |
-
2021
- 2021-09-29 CN CN202111153842.7A patent/CN115874072A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1279471A (en) * | 1968-10-24 | 1972-06-28 | Siemens Ag | Thermoelectric generators |
| EP0628968A1 (en) * | 1992-12-11 | 1994-12-14 | Sanoya Industries Co., Ltd. | RADIATION-BARRIER MATERIAL CAPABLE OF SIMULTANEOUS SHIELDING AGAINST $g(g)-RAY, X-RAY AND NEUTRON BEAM |
| CN106929732A (en) * | 2015-12-31 | 2017-07-07 | 中核北方核燃料元件有限公司 | A kind of smelting preparation method of U-Mo alloys |
| CN106925740A (en) * | 2015-12-31 | 2017-07-07 | 中核北方核燃料元件有限公司 | A kind of centre spinning method of large-scale depleted uranium flywheel |
| CN112863721A (en) * | 2020-12-31 | 2021-05-28 | 中核北方核燃料元件有限公司 | Uranium-based neutron gamma composite shielding material |
Non-Patent Citations (1)
| Title |
|---|
| 曹贺全等: "《装甲防护技术研究》", 北京理工大学出版社, pages: 151 - 152 * |
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