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  • SKD screw

    It adopts Japan’s Hitachi material,through the whole quenching then soft nitriding.It is suitable for processing general engineering plastics with a little amount of filling material.If the laser coated tungsten carbide coating SWC technology,the using life will be longer.

    Stainless steel screw

    It is heating treatment by whole quenching.it is suitable for process PC,PMMA, transparent PET and Corrosive materials.

    Material

    Bent variable force

     Effective hardness

    Surface treatment

    Surface wearing

    Lower layer wearing

    Resistance corrosion

    Alloy Steel

    JIS SACM645(38CrMoALA)

    890

    56-62Rc

    Nitriding

    good E

    inferioR F

    inferior F

    AISI4140(42CrMo)

    689

    48-56Rc

    Quenching quench

    can G

    inferior F

    inferior F

    AISI 4340

    758

    48-56Rc

    Quenching quench

    can G

    inferior F

    inferior F

    SKD61

    820

    56-63Rc

    Quenching quench

    good E

    can G

    can G

    NITRALLOY 135M

    586

    60-70Rc

    Quenching quench

    good E

    good E

    inferior F

    工具钢Tool Steel

    D-2

    2068

    58-60Rc

    Quenching quench

    good E

    good E

    inferior F

    CMP-9V/V4

    1965

    52-55Rc

    Quenching quench

    good E

    good E

    can G

    VPM-590V/V10

    22411

    56-59Rc

    Quenching quench

    good E

    good E

    good E

    不锈钢Stainless steel

    304

    241

    48-56Rc

    Quenching-alloy
    quench-alloy

    good E

    inferior F

    good E

    316

    241

    48-56Rc

    Quenching-alloy
    quench-alloy

    good E

    inferior F

    good E

    416

    793

    56-60Rc

    Quenching-alloy
    quench-alloy

    good E

    inferior F

    good E

    Note:E---Excellent       G---Good        F---Fair    

    The rapid development of injection molding machinery, the increase of screw speed, the increase of pressure in the barrel, and the rapid development of engineering and modified plastics make the screw and barrel made of ordinary nitrided steel unable to meet the requirements of wear, corrosion and high temperature. According to actual needs, the company has developed and introduced materials that can be adapted to modern plastic processing. With high precision, high hardness, strong wear resistance, corrosion resistance and so on. The raw materials of the screw are mainly composed of alloy steel, stainless steel and CPM tool steel. The figures below show the grades of various materials and outline their characteristics and related application materials. We can provide: various screws and barrels with inner diameter φ15MM-φ300MM and length 10000mm, and can take nitriding, titanium plating, chrome plating, nickel plating, vacuum quenching, spraying alloy and coating tungsten carbide on the screw and barrel. Surface treatment. For more information on snail products, or have any questions, designs, or quotations, please contact our sales representative or visit the official website.