| Customization: | Available |
|---|---|
| Application: | Aviation, Electronics, Industrial, Medical, Chemical |
| Standard: | ASTM |
|
Still deciding? Get samples of US$ 200/Piece
Request Sample
|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
Radiology protective lead plate
Dental protective lead plate
Counterweight lead
Lead plate
Manufacturer lead plate construction precautions Logistics distribution acid, alkali and corrosion resistance
Lead plate production drawing
Professional lead smelting factory - ingot molding 80*1000*1500- then according to the customer size with machine rolling molding and cutting length supply. Calender workers wear gloves and face masks. No other measures have been taken.
Lead plate is a type of steel plate made of lead, its main characteristics are high hardness, radiation protection, in some important places such as hospitals has a relatively large role in radiation protection. Lead plate is the main product type of radiation protection, which plays a huge role in many aspects, so in recent years, with the further application of radiation protection materials, it is expected that the market demand and gap are relatively large. The operation of the lead plate is relatively much, for the common is its cutting! What are the common problems that should be paid attention to in the process of cutting lead plates?
Cutting the lead plate can also be done by ray cutting or plasma cutting. For the health of the workers, it is necessary to wear a gas mask or gas mask and wear radiation protective clothing. Cutting lead is mainly dust hazards, metal dust and other toxic substances, smell is strictly said to be dust into the taste of oral products. It is easy to cause metal dust syndrome. These smoke is more subtle, the general protective effect of masks can not meet the protection requirements. Lead plate is a brittle material with a large proportion, so be sure to handle it gently when moving.
The surface of the lead plate is easy to scratch, so pay attention during the construction process, do not touch with sharp things, and be careful. Due to the abundance of lead and barium, lead glass is susceptible to acid and alkali contamination and is not easy to install or store in acid gas or humid environments.
What should I do if I encounter a lead leak?
First of all, the fire source must be cut off, and all protective equipment such as gas masks should be worn for leaking PbCl4 and Pb(ClO4)2 in the lead plate. Mix with dry sand soil, pour into a large amount of water in small batches, and put the diluted sewage into the wastewater system; For leaking PbO, tetramethyl (B) base lead and Pb3O4, all protective equipment such as gas masks should be worn. Mix with dry sand and dump it in an open area. The contaminated ground is washed with soap or detergent, and the diluted sewage is put into the wastewater system; For leaking PbF2, Jilin lead plate, should wear all protective equipment such as gas mask. Sprinkle the spill with soda ash; The contaminated ground is washed with water, and the diluted sewage is put into the wastewater system; For leaking Pb(BrO3)2, PbO2 and Pb(NO3)2, all protective equipment such as gas masks should be worn. The contaminated surface is washed with water, and the diluted sewage is put into the waste water system; For leaking alkyl lead, scrub with an emulsion made of a non-combustible dispersant. If there is no dispersant, it can be absorbed by sand, used as lead plate, and buried in an open place; The contaminated floor is washed with soap or detergent, the lead plate is made, and the diluted sewage is put into the wastewater system. Lead plate is a kind of strong corrosion resistance, acid and alkali resistance, acid environment construction, medical radiation protection, X-ray, CT room ray protection, aggravation, sound insulation and many other aspects, and is a relatively cheap radiation protection material. So how should we pay attention when using it? 1. The lead plate contains rich lead and barium, which is easily polluted by acid and alkali, and is not easy to install or store in acid gas or humid environment. 2. Glass is a brittle material with a large proportion, so it must be handled gently when it is moved. 3. The surface of the glass is easier to scratch than ordinary glass, and should be treated with care. 1, α particle penetration is weak, a piece of paper can block; The lead plate can completely block and protect alpha radiation, focusing on not ingesting and contaminating the skin.
2, beta rays, penetration is moderately strong, the general lead plate can block the vast majority of rays, but usually add a layer of low atomic number barrier when protecting beta rays, so as not to produce bremsstrahlung.
3, gamma rays are produced with α and β, and have strong penetration. A certain thickness of the lead plate can block a certain proportion of intensity of gamma rays, radioactivity intensity with the thickness of the lead plate according to exponential decay, theoretically can not be completely blocked.
Lead sheet refers to a sheet made of rolled metal lead. With strong corrosion resistance, acid and alkali resistance performance, in acid environment construction, medical radiation protection, X-ray, CT room ray protection, aggravation, sound insulation and many other aspects, is also a relatively cheap radiation protection material.
Lead sheet refers to a sheet made of rolled metal lead. The specific gravity is 11.345g/cm3.
At present, the common thickness in China is 0.5-500mm, and the common specification is 1000*2000mm. The best machine in China can make the widest 2000mm and the longest 30000mm. Most of them are made of 1# electrolytic lead, and some are made of recycled lead on the market. The quality is a little worse and the price is a little different. [1]
Source and History editor
Lead was one of the first metals used by man, smelted from ores as early as 3000 BC. Lead and zinc co-occur closely in nature, especially in primary ore deposits. They share a common source of ore-forming materials and very similar geochemical behavior, have similar outer electronic structure, are strongly sulfurophilic, and form the same soluble complex. They are similarly adsorbed to iron, manganese, clay, or organic matter.
Currently, more than 250 lead and zinc minerals have been found in the Earth's crust. About one-third are sulfides and sulfates, but only 17 are currently available for industrial use. Among them, the lead industrial minerals are galena, antimony antimony, brittle antimony antimony lead ore, wheel ore, white lead ore, lead alum, chromium lead ore, phosphorus chloride lead ore, lead ore, vanadium lead ore, molybdenum lead ore; Zinc industrial minerals are sphalerite, wurtzite, rhomboxerite, isoperite, siloxerite, water zinc ore. Galena and sphalerite are the main industrial mineral raw materials for smelting lead and zinc.
Mainly used in the manufacture of lead batteries, in acid industry and metallurgical industry with lead plate, lead pipe as the lining protection equipment, electrical industry as cable cover and fuse. Lead alloys containing tin and antimony are used for printing movable type; lead and tin alloys are used for making fusible lead electrodes; and lead and lead-plated steel plates are used in the construction industry. Lead has good absorption of X-ray and gamma rays and is widely used as a protective material for X-ray machines and atomic energy devices. Lead has been or will soon be replaced by other materials in some fields for reasons of lead toxicity and economy. [1]
Feature editing broadcast
It has strong anti-corrosion, acid and alkali resistance, acid environment construction, medical radiation protection, X-ray, CT room ray protection, aggravation, sound insulation and many other aspects, and it is a relatively cheap anti-radiation material. [1]
The research and prospect of lead plate dampers
introduction
At present, the research and application of isolation, energy dissipation damping technology is more and more extensive. With the continuous development of the society, the research and development of new equipment and the application of more and more, lead metal damper gradually played its position in the key field. In order to achieve the purpose of shock absorption and isolation, lead deformation caused by elastic-plastic yield during earthquake will consume seismic energy. Lead damper is a kind of energy dissipation device with superior performance, simple structure, convenient production and very economical. It can be used as energy dissipation element or limit device in isolation system, and can be used as energy dissipation device in building structure to provide damping; It can be used in risk control of structure and seismic control of structure. Therefore, it has great application value and wide application prospect.
At present, various types of lead dampers have been developed: lead squeeze dampers, lead shear dampers, lead joint dampers, cylindrical lead dampers and special lead dampers.
Lead shear damper
The lead shear damper was first developed by Penguin Engineering, New Zealand. The basic principle is to use lead to produce plastic deformation after shear yield to energy consumption. At small displacement, lead is subjected to shear and bending, enters the yield stage, and consumes energy through hysteretic deformation. Shear hysteresis deformation is used to consume energy during large displacement. The main feature of this kind of dissipator is that it is very sensitive to small deformation and can obtain large damping force at ± 2μm deformation. Secondly, due to the dynamic recrystallization function of lead itself, it can do thousands of cycles under different deformation without degradation within the range of its design deformation. It can keep its mechanical properties unchanged and its working performance is very stable. The damping force provided by the lead shear damper is independent of the deformation velocity and is similar to that of an ideal plastic body. Since then, many domestic scholars have done a lot of work in the research and development of lead shear dampers. Wang Huanding et al. have carried out step loading tests of triangular waves with different frequencies and different displacement peaks on lead shear dampers. The experimental results show that the elastic stiffness of the lead shear damper is very large and the yield displacement is very small. After yielding, the stiffness decreases obviously with the increase of the displacement, which reflects the obvious plastic property.
Figure 1: A new type of lead damper is shown, which is a lead shear damper developed by Yan Weiming, Peng Lingyun et al. The performance test under different loading displacement, loading frequency and loading times shows that this kind of damper is a good kind of damper with full hysteresis ring. The hysteresis performance of this kind of damper is stable, the energy dissipation effect is good, the device is small, the output is large, can meet the requirements of the device energy consumption, and the production is simple, without maintenance.
The hysteretic curves of the same displacement peak and different frequencies are basically the same. It can be concluded that the energy dissipation performance of the lead shear damper in the low-frequency displacement-dependent type is independent of the loading frequency, and the damper is tensile and compressive, and the hysteretic curve is symmetric along the origin of the loading. In the case of small displacement, the hysteresis curve is basically quadrilateral. With the increase of displacement, the stiffness increases, the shear action tends to be stable, and the hysteresis curve gradually tends to be quadrilateral, and the hysteresis curve with large displacement basically includes the hysteresis curve with small displacement.
Lead plate damper
The lead plate damper proposed in this paper, when the lead plate within a certain length range belongs to the shear type damper, the damper is mainly composed of steel plate, solid steel column and lead, using grade Q345 steel plate and steel column, steel wall thickness is 20mm, steel column is 40mm diameter of solid steel column, 50mm thick high purity lead plate. The production of specimens is simple and convenient. The specific size model is shown in Figure 2: lead plate damper.
Lead dampers are displacement-dependent dampers, and their energy dissipation performance is independent of velocity. Lead plate damper is simple in construction, no maintenance, easy to make, and can provide stable damping force. However, there are still some problems that need to be solved, whether from the research perspective of lead plate damper or from the perspective of its future engineering application:
(1) The parameters of the lead plate damper have a great influence on its hysteretic performance, so it is necessary to do in-depth research on the influence of different parameters of the damper on the hysteretic performance;
(2) The processing technology of lead plate damper (such as the precision of lead plate production, the purity control of lead color) still needs to be further studied. With the further research and maturity of lead damper, it will be used in practical engineering.
){kind=link}