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  • Eagle Eyes China Inspection Company (China): Eagle Eyes (CHINA) Quality Inspection Co.,Ltd. is a professional Third Party China Inspection company, offering...
  • Common Problems And Solutions For Cold Rolling Of Cns Scr420 Steel - China

    price: 697.00 Dollar US$

    Common problems and solutions for CNS SCr420 steel

    1 - Surface scratches - roll wear/foreign matter intrusion - need to replace rolls regularly, strengthen filtration of lubricants

    2 - Edge cracks - too high reduction rate or too low edge temperature - should reduce the deformation per pass, preheat the edge

    Thickness fluctuations

    3 - Insufficient mill stiffness or unstable tension - calibrate roll gap, PID control tension

    4 - Poor plate shape - uneven roll gap adjustment or residual stress - use CVC mill or bending roll technology to correct Application suggestions

    Typical uses:

    High-precision cold-rolled strip steel (thickness 0.5~3mm): gear ring, precision shaft sleeve.

    Cold-formed structural parts: complex shape parts that require subsequent carburizing and quenching.

    Alternatives:

    If higher strength is required: consider 20MnCr5 (GB 20MnCrH).

    If better formability is required: choose 20CrMoH (add Mo element).

    SONGSHUN

    We specialized in steel as a professional steel manufacturer and supplier, and also can give you technical advice and support for your business base on our professional technical knowledge.

    Songshun Company Website:

    https: //songshunsteel.

    com/

    songshunsteel20240115


    Company Contact:


    • Phone: 0086 0769 85475596

    • Address: 1st Floor, No. 1, Dongda Fourth Street, Shatou Community, Chang'an Town, Dongguan , GuangDong , China

    • Email: Email


    Published date: July 21, 2025

    • Business Description: Established in 2009,Songshun Steel supplies a wide range of carbon, alloy and tool steel products, including high speed tool steel, cold work tool steel, hot work tool steel, plastic mould steel, engineering steel and machine structural steel etc.

      After more than 10 years development and growing, Songshun Steel becomes one comprehensive special steel factory, stockist and exporter.

      Combined with experienced exporting team and professional technical knowledge, Songshun Steel offers both technical advice and support, as well as global professional steel solution and service.

      Due to satisfactory reliable quality and professional service, Songshun expands our market worldwide, such as Colombia, Chile, Spain, Turkey, Iran, Vietnam, Malaysia ,UAE, Canada, Brazil, Mexico and so on.

      Songshun specialized in Special Steel for almost 20 years.

      We can supply mold steel, high speed steel, alloy steel, free cutting steel and etc.

      Welcome your contact 24 hours a day!!!

      Skype/Whatsapp/We chat: +86-18269260283

      Songshun Tiktok: mikizhuo

      Songshun Facebook: Songshun Steel

      Songshun YouTube: MiKi Zhuo

      Our Products:

      - High Quality Alloy Heat Treating Steel Bars

      - Odm High Strength Songshun Steel Supplier Round Bars Price

      - China Supplier Spectrometer Test Hot Rolled Alloy Steel Chemical Composition

      - American Standard High Strength Impact Resistance Aisi 4340 Alloy Structural Steel Square

      - Low Cost Weld Building Steel Structural Alloy Round Bars Product

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