used in the occasion for connecting the steel bar in normal situation
Different Diameter Model
used for connecting the steel bar in different diameters
Flared Model
used for the steel bar which was hard to match
Positive And Negative Screw Thread Model
Used in the occasion when the steel bar in the two sides both can not be turned but the lengths can be adjusted.
Locking Nut Model
Used when the steel bar can not be turned, then it turns the splicing coupler to join the steel bar and then lock the splicing coupler with the locking nut.
3).The material of the splicing coupler
The material of the splicing coupler is constructional quality steel of No.45 steel.
Standard and grade:
P20 /sis 618/ jis pds3/ din 1.2311
1. Size:
Thick: 20-400mm
Width: 1600~2200mm
Length: 3000~5800mm
Materials can be cut as your request.
2. Delivery condition:
Pre-hardened: 28-36hrc
3. Applications:
Especially suitable for making of plastics mold focused on superior anticorrosion and polishing property, widely used to high-grade transparent cosmetics and package containers and food containers.
4. Characteristics:
By modifying the chemical compositions of the steel, the anti-acid effect become more excellent and the mirror polishing property become more superior;
Smelted in application of esr process, the steel becomes more purified; the steel is 100% subject to ultrasonic defect detection and free of air bubbles and sir porosity;
The steel is supplied in pre-hardened state (30-36hrc) and suitable for direct molding. Softened steel and special hardening heat treatment services may be provided according to the clients' need.
Packing:raw, 20" container within 27tons
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1.6511 Steel Characteristics
1.It has great atmospheric corrosion resistance, fatigue resistance and strength.
2.Stay excellent toughness, wear resistance and fatigue strength after heat treated.
3.It is alloy steel with low carbon and high nickel. About the coating and softening for leather knife sheath, it is a great choice.
4.4340 alloy steel bar is used widely in the aerospace industry because of great strength.
4340 alloy steel is used to manufacture large and medium-sized plastic molds that require high strength and toughness. And it is used for making important quality controlling parts with good toughness, high strength, and large size, such as heavy machinery and high load shafts, dia of turbine shafts is larger than 250mm, helicopter rotor shafts, turbojet turbine shafts, blades, high-load transmission parts, crankshaft fasteners, gears and etc.
After nitriding, it also can be used to make important parts for special performance requirements. And it will be a great material for high strength and good plasticity parts after low-temperature tempering or isothermal quenching.
Forging of 4340 alloy steel:
4340 steel is first preheated up to 1150C 120C for forging until uniform temperature throughout the section
Do not forge below 850 C, 4340 has good forging characteristics, but care must be taken when cooling as the steel can easily crack. After the forging operation, the workpiece should be cooled as slowly as possible. It is recommended to cool in sand or dry lime etc.
