Cast iron achv-2

  • Cast iron AChV-1
  • Cast iron AChV-2
  • Cast iron AChK-1
  • Cast iron AChK-2
  • Cast iron AChS-1
  • Cast iron AChS-2
  • Cast iron ASF-3
  • Cast iron AChS-4
  • Cast iron AChS-5
  • Cast iron AChS-6

    • Designation

    Name The value
    Designation GOST Cyrillic АЧВ-2
    Designation GOST Latin AChB-2
    Transliteration AChV-2
    By chemical elements -

    Description

    Cast iron achv-2 applies: for the production of castings, working in conditions of friction with high peripheral speeds in a pair with the shaft, not subjected to heat treatment.

    Note

    High strength antifriction cast iron with nodular graphite.

    Standards

    Name Code Standards
    Cast iron В11 GOST 1585-85

    Chemical composition

    Standard C S P Mn Si Fe Mg
    GOST 1585-85 2.8-3.5 ≤0.03 ≤0.2 0.4-0.8 2.2-2.7 Rest 0.03-0.08
    Fe is the basis.

    Technological properties

    Name The value
    Microstructure Perlite or pearlitic-ferritic. Graphite: a form - ШГф2, ШГф4, ШГф5; size - ШГД15 - ШГД180; distribution - ПГр1 - ПГр3. Perlite: footprint - П70-P45; dispersion - ПД0,3 - ПД1,0. Fosfina the eutectic (nature of distribution) - ФЭр1, ФЭр2. Cementite is not more than 5%.
    Operating conditions The use of castings made of cast iron notificationname in friction requires careful installation, providing the pair of the friction surfaces and the absence of bias; continuous lubrication, permitting true and significant heating of the friction units; increase of the gap compared to the established bronze 15-30%, in the presence of significant heating osetreni in the work - up to 50%; running at idle and progressively higher loads. At pressures P≤1.0 MPa sliding speed V must be ≤5.0 m/s and the product P·V ≤ 3,0 MPa·m/s At a pressure of P≤12,0 MPa sliding speed V must be ≤1.0 m/s and the product P·V ≤ 12,0 MPa·m/s.