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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Impact crusher replacement of consumables: When the impact crusher replaces consumables, first open the rear shelf. When using, first remove the connecting bolts of the rear upper frame and the middle case, then use a wrench to screw the hex head part of the flip device, and then the upper frame is slowly opened. At the same time, the rear frame can be suspended by the hanging device above the rack. Repeat the above process, that is, close the upper shelf. Counter hammer crusher: When the counter hammer is worn to a certain extent, it should be adjusted or replaced in time to avoid damage to fasteners and other components. Impact crusher lining: Open the rear upper cover, remove the split pin, slotted nut and bolt for fixing the counter lining, and replace the worn back lining. If installing a new counter lining, reverse the above steps immediately.
How high the bearing temperature of the impact crusher is: 1. Too much or insufficient grease: Check if the grease is excessive 2. Grease is dirty: Replace the grease after clear bearing 3. Bearing damage: Replace the bearing impact crusher In the sand production line, it plays a crucial step. In the process of use, we must promptly maintain and repair, and eliminate the problem in the bud. Don’t lose weight because of the small loss, and the loss is more serious, ensuring the normal production of the sand production line. status.
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
In the sand production line, the impact crusher is the third process. After the jaw crusher breaks the large material and then goes to the impact crusher, it is crushed to become the 20~60mm particles required by the customer. The impact crusher is a kind of crushing machine that uses impact energy. In order to ensure the impact crusher, it is better to continue to run in the sand production line, and continue the service life of the impact crusher, the user should carry out regular maintenance and maintenance of the impact crusher. After the new machine is put into operation, a comprehensive inspection of the counter-attack must be carried out at the end of each shift. After the weekly operation, perform a comprehensive inspection of the motor and lubrication that are broken. The inspection contents include the fastening of the fixed part, the belt drive, the bearing seal, the counter-lining, the wear of the lining plate, and the full-position inspection, and establish a regular maintenance and replacement system in combination with the maintenance cycle. Clearance adjustment of the rotor of the impact crusher and the counter lining: When the rotor of the impact crusher is in operation, the gap between the rotor and the counter lining cannot be adjusted. If the material is stuck between the counterattack plate and the plate shell, it is recommended to raise the counter-attack slightly between the re-adjustment gaps, so that the feed of the block will become loose and the counter-attack frame can be easily adjusted. If the counter-attack is not enough, you can pat on the loose lever (protected with a piece of wood). The clearance between the rotor and the counter-liner is done by the adjustment device of the machine. First loosen the bolt sleeve and then turn the long nut. The drawbar moves upwards and is adjusted to tighten the screw sleeve.