Duplex Stainless Steels Available
Yuhong Group supplies LDX2101, 2205, Ferralium 255, Zeron 100 and LDX2507 in the form of plate, sheet, strip, bar, pipe, tubing, pipe fittings, flanges and weld wire.
Duplex Stainless Steel Overview
Duplex Stainless Steels, also referred to as austenitic-ferritic stainless steels, are a family of grades with about equal proportions of ferrite and austenite. These steels have a duplex microstructure which contributes to their high strength and high resistance to stress corrosion cracking. Due to their high content of chromium, nitrogen and molybdenum, duplex steels offer good resistance to local and uniform corrosion. Duplex stainless steels have good weldability.
Today, modern duplex stainless steels can be divided into three groups:
Of the duplex grades, duplex 2205 is the most widely used. However, the super duplex steels like Zeron® 100 and LDX2507 are excellent for servicing severe corrosive environments, such as offshore and marine applications. Lean duplex 2101 is available as an economic alternative to 300 series stainless steels.
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All DVRs can be connected to the serial hard disk. Users can select different hard disks to connect according to their own video storage time.
Video view:
The DVR has BNC and VGA video output, which can be used with display devices such as TVs, monitors, and computer monitors. Some manufacturers have integrated display screens with hard disk recorders.
Centralized video management:
All manufacturers' DVRs are equipped with centralized management software, which can be used to manage video images of multiple DVRs and unified storage with video.
remote access:
The DVR can be remotely accessed and accessed via a network setting. Let monitoring be viewed anytime, anywhere with a network.
The main functions of the DVR include: monitoring function, recording function, playback function, alarm function, control function, network function, password authorization function and work schedule function.
Second, the DVR classification <br> The main purpose of the DVR is to convert the image analog signal transmitted from the front-end device (such as the camera) into a digital signal, which is compressed and stored in the hard disk, generally divided into PC type and embedded.
PC hard disk recorders can also be subdivided as follows:
(1), industrial computer PCDVR
The industrial computer PCDVR adopts the industrial control chassis, which can resist the harshness and interference of the industrial environment. With CPU industrial integrated card and industrial backplane, it can support more video and audio channels and more IDE hard drives. Of course, the price is two or three times that of a typical commercial PC. It is often used in a variety of important situations and requires a large number of channels.
(2), commercial machine PCDVR
Commercial PCDVRs are also generally used in industrial control cabinets to improve the stability and reliability of the system. The number of video and audio channels is also small, and ordinary commercial PC chassis are also used. It uses a universal PC motherboard and a variety of boards to meet the system requirements. It is cheap and adaptable to the environment. It is often used in a variety of general situations, and the number of image channels is generally less than 24 channels.
The characteristics of the DVR (3), server PCDVR
The server PCDVR adopts the server chassis and the motherboard, etc., and the stability and reliability of the system are also greatly improved compared with the former two. Often with UPS uninterruptible power supply and a large number of disk storage arrays, support hot swappable hot swap function. It can run continuously for 24 hours × 7 days in a row. It is often used in special applications where the number of monitoring channels is large and monitoring requirements are very high.
Third, its outstanding characteristics are reflected in the following aspects:
1. The digital high-fidelity storage that realizes the analog program can record and store the widely distributed and personally collected analog audio and video programs in an advanced digital way. Once recorded, repeated playback will not cause any degradation in quality.
2. The comprehensive input and output interface provides antenna/television cable, AV terminal, S-terminal input interface, AV terminal and S-terminal output interface. It can record almost all TV programs and other players, cameras output signals, and easily connect with other audio-visual equipment.
3. A variety of optional image recording levels for the same program source, providing three image quality recording levels of high, medium and low. When the highest level is selected, the recorded image quality is close to the image quality of the DVD.
4. Large-capacity long-term program storage, scalable users can use 20.4GB, 40GB or larger hard disk for program storage. Calculated at 20.4GB capacity.
5. With advanced time shifting (Timeshifting) function When you have to interrupt watching TV programs, the user only needs to press the Timeshifting button, the program starting from the interrupted viewing time will be automatically saved, and the user can still process the transaction. Continue watching the program from the interrupted position without any pause.
6. Perfect reservation recording/playing program function. The user can freely set options such as the start time and length of time to start recording/playing the program. Through the editing combination of reserved program listings, various intermittent television programs, including television series, can be systematically recorded.
7. Powerful network information Home Appliance Center users can enjoy rich online information through the network communication interface, using DVR's customized web browser and equipped with corresponding network resources.
8. Providing a convenient way to manage recorded programs Users can organize and classify recorded programs according to the recording time, program type, etc., and set bookmarks at favorite locations.
9. Provide free-to-play playback mode Due to the fast and random storage features of the hard disk, you can play tricks in a more flexible and flexible way than the current DVD player when you enjoy the recorded and recorded programs. The image is smoother and has a higher detail resolution for slow playback.
DUPLEX STAINLESS STEEL
Lean Duplex such as LDX2101
Standard Duplex such as 2205, the work-horse grade accounting for more than 80% of duplex usage
Super Duplex such as Ferralium 255 and Zeron 100 and LDX2507
What are the Characteristics of Duplex Stainless Steels ?
Very good resistance to uniform corrosion
Very good resistance to pitting and crevice corrosion
High resistance to stress corrosion cracking and corrosion fatigue
High mechanical strength
Good sulfide stress corrosion resistance
Good abrasion and erosion resistance
Good fatigue resistance high energy absorption
Low thermal expansion
Good weldability
In what Applications are Duplex Stainless Steels® used ?
Oil and gas equipment
Offshore technology
Seawater desalination plants
Chemical industry, especially when handling chlorides
Flue-gas cleaning
Desalination plants and seawater systems
Pulp and paper industry
Cargo tanks and pipe systems in chemical tankers
Firewalls and blast walls on offshore platforms
Bridges
Storage tanks
Pressure vessels, reactor tanks, and heat exchangers
Rotors, impellers and shafts
DVR and DVR related knowledge sharing
[ Huaqiang Security Network News ] DVR main function <br> DVR (Digital VideoRecorder, DVR), that is, digital video recorder, compared to the traditional analog video recorder, using hard disk video, so often referred to as DVR, also known as For the DVR. First, the main function of the DVR <br> Video storage: