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    Electroslag casting technology of green casting technology
    Release date:2015-02-09 Clicks:329 Article author:
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    Electroslag casting technology of green casting technology is advanced technology in steel refining and casting forming and development. 

    Electroslag casting has the following advantages:


    A. internal organization

    1 electroslag casting with pure, compact structure, uniform composition, can reach the same level of forging materials;

    2 non metallic inclusions reduced by more than 1/2, at the same time, fine and uniform distribution of inclusion;

    3 sulfur is reduced by more than 1/2;

     

    The mechanical properties of B.

    1 Mechanical Properties of isotropic, lamellar tearing resistance;

    2 the impact toughness increased significantly;

    3 the fracture toughness of KIC increased significantly;

    4 improve the material fatigue performance;

    5 the density of the material increased significantly, greatly improve the anti cavitation resistance, sand wear ability, improve the blade life and safety;

     

    C. material utilization and production cost

    1 electroslag casting can purify the blank, cutting, improve the utilization rate of metal;

    2 electroslag casting can simplify the process, reduce production cycle, reduce production costs;

     

    D. nondestructive testing

    1 ultrasonic inspection can meet the requirements of the European standard and the United States at all levels of CCH703 Foundry Association standard ASTM A609.

     

    Comparison of sand casting slag casting forging process of electricity

     

    Sand casting

    Sand casting

    Electroslag casting ESC

    Electro slag casting

    forging

    Forging

    Process

    Process

    simple

    Easy

    commonly

    Common

    complex

    Complex

    Blank size accuracy

    Rough accuracy

    Close to the final product

    Close to final product

    Close to the final product

    Close to final product

    The thick blank

    Big rough

    The purity of the metal

    Metal purity

    Can not improve the purity

    Can not rise purity

    Greatly improve the purity

    Can rise purity sharply

    Can not improve the purity

    Can not rise purity

    Two pollution

    Secondary pollution

    The pouring process of the two pollution

    In the pouring process

    No two pollution

    Non

    No two pollution

    Non

    Shrinkage

    Shrinkage microshinkage

    There

    Have

    nothing

    Non

    nothing

    Non

     

     

    Non metallic inclusions

    Non-metallic inclusion

    unchanged

    No change

    Reduction of 1/2 ~ 2/3

    Fall1/2 ~ 2/3

    unchanged

    No change

    Composition uniformity

    Elements uniformity

    Not even

    Not uniform

    uniformity

    Uniform

    Not even

    Uniform

    density

    Density

    reduce

    Fall

    increase

    Rise

    Slightly improved

    Rise a little

    The utilization rate of materials

    Material utilization

    From 40% to 60%

    From 70% to 80%

    From 20% to 40%

    production cycle

    Production cycle

    commonly

    Common

    Short

    Short

    Long

    Long

    The rejection rate

    Eject ratio

    From 10% to 30%

    From 5% to 15%

    From 20 to 50%

     
    conclusion
    1 with sand casting compared to molten metal purification;
      
    2 compared with forging, electroslag casting can reach the same level of forging materials;
     
    3 electroslag casting is an important method of sand casting and forging process instead of.
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