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42CrMo4 Hollow Piston Rods Bar NSS 240 350 550 Hours For Telescopic Hydraulic Cylinder

42CrMo4 Hollow Piston Rods Bar NSS 240 350 550 Hours For Telescopic Hydraulic Cylinder

    • 42CrMo4 Hollow Piston Rods Bar NSS 240 350 550 Hours For Telescopic Hydraulic Cylinder
    • 42CrMo4 Hollow Piston Rods Bar NSS 240 350 550 Hours For Telescopic Hydraulic Cylinder
  • 42CrMo4 Hollow Piston Rods Bar NSS 240 350 550 Hours For Telescopic Hydraulic Cylinder

    Product Details:

    Place of Origin: CHINA
    Brand Name: DALLAST
    Certification: SGS TUV
    Model Number: Model

    Payment & Shipping Terms:

    Minimum Order Quantity: 1
    Price: Negotiable
    Packaging Details: Wooden box
    Delivery Time: 15-25DAYS
    Payment Terms: T/T
    Supply Ability: 100000PCS/YEAR
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    Detailed Product Description
    Material: 45# 42CrMo 40Cr 40CrMo4 Color: Black
    NSS: Endure1000 Hours Type: Hollow/Solid Rod
    Application Environment: At Sea Or In Harsh Environments Surface Hardness: >HV850

    40Cr 40Crmo4 42CrMo Piston Hollow Rods Hard Chrome Plated Steel Bar For Hydraulic Ram NSS 1000 Hours

     

    Send The Sample For Your Testing

     

     
    specification φ3-φ12 φ16-φ25 φ30-φ50 φ55-φ100 φ105-φ120
    Length 200-2000 200-3000 200-5000 200-10000 1000-10000
    Scheduling axis hardness HB220-280
    Surface hardness >860 HV0.1 The straightness 0.15/1000mm
    Accuracy g6 grade h7 grade Hardened layer depth 0.8-3mm
    Roundness tolerance

     

    <=0.01

    APT thickness 10um-40um
    Full length tolerance

     

    <=0.02

    The materiel 42CrMo4
    Surface roughness Ra 0.2- 0.4
     

     

    Heat treatment

    1.Quenching with fire about 860 °C, placed in furnace box

    2. After quenching, put into the oil tank to cool from the box furnace

    3. After cooling, the first time tempering: tempered at 640 °C and the hardness is controlled at about HRC28-32, the first time tempering cooling is used Water-cooled.

    4. Straightening: The outer circle is controlled by 200 um(0.2mm) ;

    straightening equipment:

    three-roller straightening machine;

    hydraulic straightening machine (multipoint straightening)

    5. The second tempering removes the hard force, the temperature is about 480 °C, and Keep warm for 2 -2.5hours ; release 80% more or less

     

    CHEMICAL COMPOSITION
    Material C% Mn% Si% S% P% V% Cr%
    Ck45 0.42-0.50 0.50-0.80 0.04 0.035 0.035    
    ST52 0.22 1.6 0.55 0.035 0.04    
    20MnV6 0.16-0.22 1.30-1.70 0.10-0.50 0.035 0.035 0.10-0.20  
    42CrMo4 0.38-0.45 0.60-0.90 0.15-0.40 0.03 0.03   0.90-1.20
    40Cr 0.37-0.45 0.50-0.80 0.17-0.37       0.80-1.10

    MECHANCIAL PROPERTIES

    Material T.S N/MM2 Y.S N/MM2 E%(MIN) CHARPY CONDITION
    CK45 610 355 15 >41J NORMALIZE
    CK45 800 630 20 >41J Q + T
    ST52 500 355 22   NORMALIZE
    20MnV6 750 590 12 >40J NORMALIZE
    42CrMo4 980 850 14 >47J Q + T
    40Cr 1000 800 10   Q + T

     

    NSSTesting Standing ISO9227:2017

     

    · Sal solution: 50 (+/- 5) g/l of NaCl. Water is demineralized and salt purity is 99.5%.

    · Environmental temperature: 35 °C.

    · pH of salt solution is 6.8.

    · Volumen of salt solution is 38.4 ml/day.

    · Density of salt solution is 1,030 g/cm3.

    · Spraying is 1.5 (+/- 0.5) ml/h.

    Test Result :NSS can endure 300 hours ;500 hours; 800 hours

     

    SGS NSS Testing Report         TUV NSSTesting Repopt

     

    Main hydraulic cylinder parts:

     

    Precision cold drawn steel, honing steel, precision piston rod, hydraulic cylinders and various hydraulic system design and manufacturing. The company has a professional production plant, for many years engaged in hydraulic engineering research and design experts and have rich practical experience in engineering and technical personnel, a dedicated production equipment, advanced production technology, and improve the quality assurance system to ensure product quality , With the best after-sales service for customers value.

     

    42CrMo4 Hollow Piston Rods Bar NSS 240 350 550 Hours For Telescopic Hydraulic Cylinder

    42CrMo4 Hollow Piston Rods Bar NSS 240 350 550 Hours For Telescopic Hydraulic Cylinder

    42CrMo4 Hollow Piston Rods Bar NSS 240 350 550 Hours For Telescopic Hydraulic Cylinder

     

     

    Contact Details
    Shenzhen Dallast Technology Co., Ltd.

    Contact Person: Aaron

    Send your inquiry directly to us (0 / 3000)

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