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Cast iron achv-2

Designation

Name The value
Designation GOST Cyrillic АЧВ-2
Designation GOST Latin AChB-2
Transliteration AChV-2
The 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 The 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%.
terms of Use 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.

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