GB/T 36697-2018 in English

GB/T 36697—2018 In-depth interpretation of the scrapping conditions of foundry cranes

1. Background and significance of the standard

Foundry cranes are important loading and unloading equipment in the metallurgical industry. Their safety and service life are directly related to production efficiency and personnel safety. The formulation of GB/T 36697—2018 aims to regulate the scrapping conditions of foundry cranes and ensure that the equipment is replaced in time when it reaches its design life or has safety hazards to avoid potential accidents.

2. Comparison table of standard frameworks

3. Interpretation of the core content of the standard

3.1 Design life and service life

Design life:The design life of casting cranes is based on the number of working cycles and load spectrum conditions, referring to the provisions of GB/T 3811. When the design life calculation reaches 50%, the first remaining life assessment should be carried out.

Service life:Affected by various factors such as structural form, load state, design stress, etc., the influence of rail joint defects on service life is particularly significant (see Appendix B).

3.2 Scrap conditions

The scrapping of the whole machine is mainly based on the state of the main structural parts, including indicators such as plastic deformation, static rigidity change, loss of stability, crack propagation and component corrosion. Table 1 lists the corresponding relationship between critical crack length and material fracture toughness in detail.

3.3 Implementation Suggestions

4. Technology Evolution Analysis

Casting crane technology has developed from early simple mechanical structures to the application of intelligent monitoring systems (see GB/T28264), and its safety, reliability and service life have been significantly improved. In the future, fatigue assessment methods based on fracture mechanics and finite element analysis will become an industry trend.