CN105280259B - The framework and its manufacture method of a kind of shielding - Google Patents
The framework and its manufacture method of a kind of shielding Download PDFInfo
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- CN105280259B CN105280259B CN201510784128.6A CN201510784128A CN105280259B CN 105280259 B CN105280259 B CN 105280259B CN 201510784128 A CN201510784128 A CN 201510784128A CN 105280259 B CN105280259 B CN 105280259B
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Abstract
The invention discloses a kind of framework of shielding and its manufacture method, the framework includes two sides and front and back, the framework is made of composite metal plate, the framework is fixedly connected with the bottom plate of the shielding, the top plate of the framework and the shielding is detachably connected, and be connected one end of conductor wire with the framework, the other end of the conductor wire is grounded, watch window is provided with before the framework, and radiation proof lead glass plate is provided with watch window, the two sides of the framework are provided with the fabrication hole of circle, also set up on the framework and six buckling grooves, six buckling grooves are set from top to bottom, and it is separately positioned on the two sides and edge above of the framework, the composite metal plate is made up of stainless-steel sheet and stereotype, realize shielding structure design advantages of simple, it is simple to manufacture, and cost is relatively low, the preferable technique effect of radiation-proof effect.
Description
Technical field
The present invention relates to framework and its manufacturer in radiation proof equipment research field, more particularly to a kind of shielding
Method.
Background technology
Radiation refers to energy in the form of electromagnetic wave or particle (such as alpha particle, beta particle) to external diffusion.
All objects in nature, as long as temperature is more than absolute temperature zero degree, all the moment does not stop in the form of electromagnetic wave and particle
The outside transfer of heat in ground, this energy-delivering mode is referred to as radiation.Outwards all directions are straight from radiation source for the energy of radiation
Line is radiated.Object is by radiating released energy, referred to as radiation energy.Radiation is calculated by roentgen/hour (R).Radiation has one
Important feature, is exactly that it is " reciprocity ".No matter object (gas) temperature height is all to external radiation, first object can be to second object
Radiation, while second can also be radiated to first.This noun is generally typically used in ionising radiation.Radiation is neutral words in itself, but certain
The radiation of a little materials may bring harm.
Therefore, radiation proof turns into often in contact with or existed the topic of radiation risk personnel's growing interest.In the prior art,
In the production and processing workshop with radiation or the place with compared with intense radiation, the CT Room of such as hospital is fitted with large-scale anti-spoke
Jet device, these large-scale radiation proof device structures complexity install trouble, mobile inconvenient, and cost is higher, when needs are in reality
Test when room is tested need prevent radiation when, it is then that cost performance is relatively low using large-scale radiation proof equipment.
A kind of shielding is designed as including disclosed in Chinese patent CN204166912U：Cuboid framework, the frame
Frame is made of angle steel, and one end of conductive lead wire is connected with the framework, the other end ground connection of the conductive lead wire, the framework
Upper surface be provided with radiation proof lead glass plate, the bottom surface of the framework and side are provided with radiation proof stereotype, described 4 sides of framework
On the radiation proof stereotype in the middle part of be equipped with a handle hole, one end of 4 operation sticks is each passed through 4 handle holes and is located at
In the framework, the other ends of 4 operation sticks is located at outside the framework, due to cuboid framework and radiation proof stereotype and
Radiation leakage is easily caused between non-browning glass plate, and handle hole does not have radiation proof protection, in actual mechanical process, prevents
Radiation effect is not fine, it is necessary to be improved.
In summary, present inventor has found above-mentioned skill during technical scheme in realizing the embodiment of the present application
At least there is following technical problem in art：
In the prior art, existing radiation proof equipment exists complicated, installs trouble, mobile inconvenient, cost compared with
Height, and the bad technical problem of radiation-proof effect.
The content of the invention
The invention provides a kind of framework of shielding and its manufacture method, efficiently solve existing radiation proof and set
It is standby to there is complicated, manufacture installation trouble, and the higher technical problem of cost, and then realize shielding structure design
Advantages of simple, is simple to manufacture, and cost is relatively low, the preferable technique effect of radiation-proof effect.
In order to solve the above technical problems, the embodiment of the present application provides a kind of framework of shielding, the framework is
Cuboid, the framework includes two sides and front and back, and the framework is made of composite metal plate；The framework with
The bottom plate of the shielding is fixedly connected, and the top plate of the framework and the shielding is detachably connected, and will be led
One end of electric wire is connected with the framework, and the other end of the conductor wire is grounded, and watch window is provided with before the framework,
And radiation proof lead glass plate is provided with watch window, the two sides of the framework are provided with the fabrication hole of circle.
Wherein, the fabrication hole is circle, a diameter of 2-4cm of the fabrication hole, for laboratory technician in framework
Operation when radial objects are tested；The watch window is ellipse；Also set up on the framework with six buckling grooves,
Six buckling grooves are set from top to bottom, and are separately positioned on the two sides and edge above of the framework；The metal is answered
Plywood is made up of stainless-steel sheet and stereotype, and the stereotype is sealed in stainless-steel sheet, the thickness of the stainless-steel sheet
For 1-3mm, the thickness of the stereotype is 3-5mm；Before the framework, below and two sides are integrally cold by composite metal plate
Punch forming.
In order to solve the above technical problems, present invention also provides a kind of manufacture method of the framework of shielding, including
Following steps：
1) band uncoiling and composite metal plate is formed, the stainless strips of volume two and a roll of. g., lead tape material difference of uncoiling will be treated
Uncoiling on uncoiler is placed on. g., lead tape material and stainless strip are directed into pressing welding post by guider respectively,
The stainless strip and. g., lead tape material are pressed into flat plate, while by the edge welded seal of two stainless strips,
So that. g., lead tape material is sealed in two stainless strips, the composite metal plate of length needed for being then punched；
2) punching press positioning hole：By step 1) in obtained composite metal plate send into the first presser of continuous cold punching die
Position, punching press positioning hole；
3) fabrication hole and watch window are rushed, by step 2) in obtained composite metal plate send into continuous cold punching die
Second stamping station, fabrication hole and watch window are gone out by forcing press successively on composite metal plate；
4) buckling groove is rushed, by step 3) in obtained composite metal plate send into the 3rd presser of continuous cold punching die
Position, six buckling grooves are gone out by forcing press on composite metal plate；
5) bending forms four faces, by step 4) in obtained composite metal plate send into the 4th punching of continuous cold punching die
Station is pressed, bending forms two sides and front-back totally four faces on composite metal plate by forcing press；
6) riveting, by step 5) in obtained composite metal plate send into will in the 5th stamping station of continuous cold punching die
Its edge riveted close to each other, forms a frame peripheral.
Wherein, the radiation proof lead glass plate is transparence, and the radiation proof lead glass plate is weldingly fixed on by leads
In the watch window.
Wherein, the top plate and bottom plate of the shielding are by step 1) punching be made.
Wherein, the bottom plate of the shielding and reusable lead bar welded seal after the framework riveting；It is described anti-
The framework of radiation appliance is in step 6) after, by riveted junction leads welded seal.
Wherein, the top plate of the anti-spoke device is detachably connected with the framework, and the top plate connects with the framework
The place of connecing is equipped with the sealing gasket as made from lead material.
Wherein, the shielding also includes radiation proof curtain, and the radiation proof curtain includes：House shell, Antiradiation protection cloth
And clip；The radiation proof curtain is provided with three faces, is separately positioned on two sides with fabrication hole and with observation window
Mouthful before, it is described collecting shell be stainless steel material, respectively by three collecting shells be welded on the two sides of the framework with
And upper end above, the clip is connected in the buckling groove；The Antiradiation protection cloth includes a basic unit, and the basic unit includes
Covered with terylene mesh layer on one abestrine cloth layer, the abestrine cloth layer, an anti-spoke is coated with the terylene mesh layer
Radiolead coating, high-strength nylon fabric sheet is coated with basic unit's upper and lower surface.
Wherein, the thickness of the radiation proof lead finish is 0.5-1mm.
Wherein, the thickness of the high-strength nylon fabric sheet is 0.2-0.4mm.
One or more technical schemes that the application is provided, have at least the following technical effects or advantages：
Employ and be designed as shielding to include：Cuboid framework, top plate, bottom plate and conductor wire, the framework,
Top plate and bottom plate are made of composite metal plate, and one end of conductor wire is connected with the framework, the other end of the conductor wire
Watch window is provided with before ground connection, the framework, and provided with radiation proof lead glass plate, the two of the framework on watch window
Side is provided with the fabrication hole of circle, and the shielding also includes radiation proof curtain, and the radiation proof curtain includes：House outer
Shell, Antiradiation protection cloth and clip；The radiation proof curtain is provided with three faces, be separately positioned on two sides with fabrication hole and
Before watch window.When experimenter needs to carry out experimental implementation to the material with radiation, first with framework top
Material with radiation, is then put into framework by the radiation protection composite board dismounting in face, then by the top surface good seal of framework, and
Radiation proof isolation is carried out using the radiation protection composite board of side and the radiation protection composite board of bottom surface, in experiment, using above
Non-browning glass plate can be observed, and experimental implementation can be carried out using the fabrication hole of two sides, when experimental implementation is paused
Period, radiation proof curtain can be left behind, further prevented at fabrication hole and watch window to external radiation, and can be with using wire
By the electric transmission of radiation to ground, radiation-proof effect is preferably, easy to use and simple in construction, using unique continuous punching
Technique is manufactured, and manufacturing speed is fast, and manufacturing cost is relatively low, so, efficiently solve existing radiation proof equipment exist it is complicated,
Trouble, and the higher technical problem of cost are installed in manufacture, and then realize shielding structure design advantages of simple, manufacture letter
It is single, and cost is relatively low, the preferable technique effect of radiation-proof effect.
Brief description of the drawings
Fig. 1 is the structural representation of the framework of shielding in the embodiment of the present application one；
Fig. 2 is the structural representation of radiation proof curtain in the embodiment of the present application one；
Fig. 3 is the structural representation of clad metal sheet in the embodiment of the present application one；
Wherein, 1- frameworks, 2- bottom plates, 3- watch windows, 4- fabrication holes, 5- buckling grooves, 6- houses shell, 7- radiation proofs
Cloth, 8- clips, 9- stainless-steel sheets, 10- stereotypes.
Embodiment
The embodiments of the invention provide a kind of shielding, efficiently solve existing radiation proof equipment exist structure answer
Miscellaneous, trouble, and the higher technical problem of cost are installed in manufacture, and then realize shielding structure design advantages of simple, are made
Make simple, and cost is relatively low, the preferable technique effect of radiation-proof effect.
Technical scheme during the application is implemented is solution above-mentioned technical problem.General thought is as follows：
Employ and be designed as shielding to include：The shielding includes：Cuboid framework, top plate, bottom plate
And conductor wire, the framework, top plate and bottom plate be made of composite metal plate, and one end of conductor wire connects with the framework
Connect, the other end ground connection of the conductor wire, watch window is provided with before the framework, and provided with radiation proof on watch window
Lead glass plate, the two sides of the framework are provided with the fabrication hole of circle, and the shielding also includes radiation proof curtain, described
Radiation proof curtain includes：House shell, Antiradiation protection cloth and clip；The radiation proof curtain is provided with three faces, is separately positioned on band
There are the two sides of fabrication hole and the Antiradiation protection cloth noted earlier with watch window to include a basic unit, the basic unit includes a stone
Covered with terylene mesh layer on bafta layer, the abestrine cloth layer, a radiation proof lead is coated with the terylene mesh layer
Coating, high-strength nylon fabric sheet is coated with basic unit's upper and lower surface.When experimenter is needed to the thing with radiation
When matter carries out experimental implementation, dismantled first with the radiation protection composite board of framework top surface, the material with radiation is then put into frame
In frame, then by the top surface good seal of framework, and the radiation protection composite board using side and the radiation protection composite board progress of bottom surface
Radiation proof is isolated, and in experiment, can be observed using non-browning glass plate above, can using the fabrication hole of two sides
To carry out experimental implementation, during experimental implementation is paused, radiation proof curtain can be left behind, because radiation proof curtain employs uniqueness
Composite structure, there is very good effect to radiation proof, therefore further prevents at fabrication hole and watch window to external radiation, and
Can be by the electric transmission of radiation to ground using wire, radiation-proof effect is preferably, easy to use and simple in construction, cost compared with
It is low, so, efficiently solve existing radiation proof equipment and there is complicated, manufacture installation trouble, and the higher technology of cost
Problem, and then shielding structure design advantages of simple is realized, it is simple to manufacture, and cost is relatively low, radiation-proof effect is preferable
Technique effect.
In order to be better understood from above-mentioned technical proposal, below in conjunction with Figure of description and specific embodiment to upper
Technical scheme is stated to be described in detail.
Embodiment one：
There is provided a kind of shielding and its manufacture method in embodiment one, Fig. 1-Fig. 3, the anti-spoke refer to
Injection device includes：Cuboid framework 1, top plate (not shown), bottom plate 2 and conductor wire (not shown), the framework 1, top plate with
And bottom plate 2 is made of composite metal plate, one end of conductor wire is connected with the framework, the other end ground connection of the conductor wire,
Watch window 3 is provided with before the framework, and provided with radiation proof lead glass plate, the both sides of the framework 2 on watch window 3
Face is provided with the fabrication hole 4 of circle.The manufacture method is：First, the frame of cuboid frame 1, top plate and bottom plate 2 are manufactured respectively,
The framework 1, top plate and bottom plate 2 are made of composite metal plate；Then, by the framework 1 and the company of fixation of bottom plate 2
Connect, the framework 1 and the top plate are detachably connected, and one end of conductor wire is connected with the framework 1.
Wherein, in the embodiment of the present application, also set up on the framework with six buckling grooves 5, six buckling grooves 5 on to
It is lower to set, and it is separately positioned on the two sides and edge above of the framework 1；The shielding also includes radiation proof
Curtain, the radiation proof curtain includes：House shell 6, Antiradiation protection cloth 7 and clip 8；The radiation proof curtain is provided with three faces, point
Be not arranged on the two sides with fabrication hole 4 and with watch window 3 before, it is described collecting shell 6 be stainless steel material,
Three collecting shells are welded on to the two sides and upper end above of the framework 1 respectively, the clip 8 is connected to described
In buckling groove 5；The composite metal plate is made up of stainless-steel sheet 9 and stereotype 10, and the stereotype 10 is sealed in stainless steel steel
In plate 9, the thickness of the stainless-steel sheet 9 is 1-3mm, and the thickness of the stereotype 10 is 3-5mm；Before the framework 1, after
Face and two sides are integrally cold stamping shaped by composite metal plate, and the moulding process includes：
1) band uncoiling and composite metal plate is formed, the stainless strips of volume two and a roll of. g., lead tape material difference of uncoiling will be treated
Uncoiling on uncoiler is placed on. g., lead tape material and stainless strip are directed into pressing welding post by guider respectively,
The stainless strip and. g., lead tape material are pressed into flat plate, while by the edge welded seal of two stainless strips,
So that. g., lead tape material is sealed in two stainless strips, the composite metal plate of length needed for being then punched；
2) punching press positioning hole：By step 1) in obtained composite metal plate send into the first presser of continuous cold punching die
Position, punching press positioning hole；
3) fabrication hole and watch window are rushed, by step 2) in obtained composite metal plate send into continuous cold punching die
Second stamping station, fabrication hole and watch window are gone out by forcing press successively on composite metal plate；
4) buckling groove is rushed, by step 3) in obtained composite metal plate send into the 3rd presser of continuous cold punching die
Position, six buckling grooves are gone out by forcing press on composite metal plate；
5) bending forms four faces, by step 4) in obtained composite metal plate send into the 4th punching of continuous cold punching die
Station is pressed, bending forms two sides and front-back totally four faces on composite metal plate by forcing press；
6) riveting, by step 5) in obtained composite metal plate send into will in the 5th stamping station of continuous cold punching die
Its edge riveted close to each other, forms a frame peripheral.
Wherein, in the embodiment of the present application, the radiation proof lead glass plate is transparence, and the radiation proof lead glass plate leads to
Leads is crossed to be weldingly fixed in the watch window.
Wherein, in the embodiment of the present application, the top plate and bottom plate of the shielding are by step 1) punching be made.
Wherein, in the embodiment of the present application, the bottom plate of the shielding and reusable lead after the framework riveting
Bar welded seal.
Wherein, in the embodiment of the present application, the framework of the shielding is in step 6) after, riveted junction is used
Leads welded seal.
Wherein, in the embodiment of the present application, the top plate of the anti-spoke device is detachably connected with the framework, and described
Top plate is equipped with the sealing gasket as made from lead material with the framework junction.
Wherein, in the embodiment of the present application, the Antiradiation protection cloth includes a basic unit, and the basic unit includes an abestrine cloth
Covered with terylene mesh layer on layer, the abestrine cloth layer, a radiation proof lead finish is coated with the terylene mesh layer,
Basic unit's upper and lower surface is coated with high-strength nylon fabric sheet.
Wherein, in actual applications, the thickness of the radiation proof lead figure layer is 0.5-1mm.
Wherein, in actual applications, the thickness of the high-strength nylon fabric sheet is 0.2-0.4mm.
Wherein, in actual applications, can be by the electronics being radiated on framework and glass plate and other materials using wire
Ground is discharged to, the effect of radiation proof is ensured.
Wherein, in the embodiment of the present application, provided with a hook behind the shielding, the hook is provided with anti-spoke
Shooter covers and radiation-proof garment.
Wherein, in actual applications, experimenter can combine radiation-resistant gloves and radiation-proof garment carries out dual anti-spoke
Penetrate, so as to realize the multiple protective to experimenter.
Technical scheme in above-mentioned the embodiment of the present application, at least has the following technical effect that or advantage：
Employ and be designed as shielding to include：Cuboid framework, top plate, bottom plate and conductor wire, the framework,
Top plate and bottom plate are made of composite metal plate, and one end of conductor wire is connected with the framework, the other end of the conductor wire
Watch window is provided with before ground connection, the framework, and provided with radiation proof lead glass plate, the two of the framework on watch window
Side is provided with the fabrication hole of circle, and the shielding also includes radiation proof curtain, and the radiation proof curtain includes：House outer
Shell, Antiradiation protection cloth and clip；The radiation proof curtain is provided with three faces, be separately positioned on two sides with fabrication hole and
Before watch window.When experimenter needs to carry out experimental implementation to the material with radiation, first with framework top
Material with radiation, is then put into framework by the radiation protection composite board dismounting in face, then by the top surface good seal of framework, and
Radiation proof isolation is carried out using the radiation protection composite board of side and the radiation protection composite board of bottom surface, in experiment, using above
Non-browning glass plate can be observed, and experimental implementation can be carried out using the fabrication hole of two sides, when experimental implementation is paused
Period, radiation proof curtain can be left behind, further prevented at fabrication hole and watch window to external radiation, and can be with using wire
By the electric transmission of radiation to ground, radiation-proof effect is preferably, easy to use and simple in construction, using unique continuous punching
Technique is manufactured, and manufacturing speed is fast, and manufacturing cost is relatively low, so, efficiently solve existing radiation proof equipment exist it is complicated,
Trouble, and the higher technical problem of cost are installed in manufacture, and then realize shielding structure design advantages of simple, manufacture letter
It is single, and cost is relatively low, the preferable technique effect of radiation-proof effect.
, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described
Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent
Select embodiment and fall into having altered and changing for the scope of the invention.
Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention
God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies
Within, then the present invention is also intended to comprising including these changes and modification.
Claims (1)
1. a kind of manufacture method of shielding framework, the framework is cuboid, the framework includes two sides and preceding
Face and below, the framework is made of composite metal plate；The framework is fixedly connected with the bottom plate of the shielding, institute
The top plate for stating framework and the shielding is detachably connected, and one end of conductor wire is connected with the framework, will be described
Watch window is provided with before the other end ground connection of conductor wire, the framework, and provided with radiation proof lead glass on watch window
Plate, the two sides of the framework are provided with the fabrication hole of circle, and the fabrication hole is circle, a diameter of 2- of the fabrication hole
4cm, operation when being tested for laboratory technician the radial objects in framework；The watch window is ellipse；Institute
State also set up on framework with six buckling grooves, six buckling grooves are set from top to bottom, and are separately positioned on the both sides of the framework
Face and edge above；The composite metal plate is made up of stainless-steel sheet and stereotype, and the stereotype is sealed in stainless steel
In steel plate, the thickness of the stainless-steel sheet is 1-3mm, and the thickness of the stereotype is 3-5mm；Before the framework, below
And two sides are integrally cold stamping shaped by composite metal plate；
It is characterised in that it includes following steps：
1) band uncoiling and composite metal plate is formed, the stainless strips of volume two and a roll of. g., lead tape material for the treatment of uncoiling is placed respectively
The uncoiling on uncoiler, is directed into pressing welding post, by institute by guider respectively by. g., lead tape material and stainless strip
State stainless strip and. g., lead tape material be pressed into flat plate, while by the edge welded seal of two stainless strips so that
. g., lead tape material is sealed in two stainless strips, the composite metal plate of length needed for being then punched；
2) punching press positioning hole：By step 1) in obtained composite metal plate send into the first stamping station of continuous cold punching die,
Punching press positioning hole；
3) fabrication hole and watch window are rushed, by step 2) in obtained composite metal plate send into the second of continuous cold punching die
Stamping station, fabrication hole and watch window are gone out by forcing press successively on composite metal plate；
4) buckling groove is rushed, by step 3) in obtained composite metal plate send into the 3rd stamping station of continuous cold punching die, lead to
Excess pressure machine goes out six buckling grooves on composite metal plate；
5) bending forms four faces, by step 4) in obtained composite metal plate send into the 4th presser of continuous cold punching die
Position, by forcing press, bending forms two sides and front-back totally four faces on composite metal plate；
6) riveting, by step 5) in obtained composite metal plate send into its phase in the 5th stamping station of continuous cold punching die
Mutually close edge riveted, forms a frame peripheral；
The radiation proof lead glass plate is transparence, and the radiation proof lead glass plate is weldingly fixed on the observation window by leads
In mouthful；
The top plate and bottom plate of the shielding are by step 1) punching be made；
The bottom plate of the shielding and reusable lead bar welded seal after the framework riveting；The shielding
Framework is in step 6) after, by riveted junction leads welded seal；
The top plate of the anti-spoke device is detachably connected with the framework, and the top plate is equipped with the framework junction
The sealing gasket as made from lead material；
The shielding also includes radiation proof curtain, and the radiation proof curtain includes：House shell, Antiradiation protection cloth and fixation
Button；The radiation proof curtain is provided with three faces, be separately positioned on the two sides with fabrication hole and with watch window before,
The collecting shell is stainless steel material, and three collecting shells are welded on into the two sides of the framework and above upper respectively
End, the clip is connected in the buckling groove；The Antiradiation protection cloth includes a basic unit, and the basic unit includes an abestrine cloth
Covered with terylene mesh layer on layer, the abestrine cloth layer, a radiation proof lead finish is coated with the terylene mesh layer,
Basic unit's upper and lower surface is coated with high-strength nylon fabric sheet；
The thickness of the radiation proof lead finish is 0.5-1mm；
The thickness of the high-strength nylon fabric sheet is 0.2-0.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510784128.6A CN105280259B (en) | 2015-11-16 | 2015-11-16 | The framework and its manufacture method of a kind of shielding |
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|---|---|---|---|
| CN201510784128.6A CN105280259B (en) | 2015-11-16 | 2015-11-16 | The framework and its manufacture method of a kind of shielding |
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| CN105280259A CN105280259A (en) | 2016-01-27 |
| CN105280259B true CN105280259B (en) | 2017-07-28 |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106042518B (en) * | 2016-06-13 | 2018-01-05 | 华克医疗科技（北京）股份公司 | Radiation proof leaded steel composite plate |
| CN106240082B (en) * | 2016-07-29 | 2018-05-01 | 刘世超 | A kind of radiation protection leaded steel composite plate |
| CN110098457B (en) * | 2019-06-12 | 2022-01-21 | 西南应用磁学研究所 | Anti-irradiation reinforced aerospace vehicle extravehicular orthogonal bridge |
| CN110426403A (en) * | 2019-09-12 | 2019-11-08 | 福建省中孚检测技术有限公司 | A kind of security protection is removable to adjust the fixed holder device of X-ray detection |
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| CN203693350U (en) * | 2013-06-21 | 2014-07-09 | 上海乾天厨房用具有限公司 | Cooking utensil made from five-layered metal composite material |
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