1. Unplug the power cord. Safety first;
2, remove the plastic sheath, take the Phillips screwdriver counterclockwise, unlock two screws;
3. Take a screwdriver and counterclockwise to remove a pair of carbon brush screws. Remove the carbon brush with needle-nose pliers. Carefully mark the carbon brush installation position.
4. Clean the dust on the carbon brush with a brush. Spray it gently when there is an air spray gun;
5, the shell should be slightly force to open
6. Rotate the motor shaft with your finger, if there is a touch sound, metal friction sound
7. Make sure that there is no dust, use the oil of a multi-purpose needle, drop a little into the seam on the ring, and twist the shaft with your finger to ensure that the oil is eaten;
8, wipe off the residual oil, or wipe the dust in the future;
9, according to the above steps, restore the device;
10, more than a screw locking, first with your fingers to take a look at Shun Shunshun, carbon brush installed is good, sure no difference;
11, plug in boot, to boot sound normal!
DUPLEX STAINLESS STEEL
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:
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
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.
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
Duplex Steel Welded Pipe,Stainless Steel Welded Pipe,Duplex Steel Butt Welded Pipe
YUHONG GROUP CO.,LIMITED , http://www.jessro-pipefittings.com