GB/T 31939-2015 in English

National Standard of the People's Republic of China GB/T 31939—2015 Hot-rolled Steel Plates and Strips for Mine Rescue Capsules

Background of Standard Formulation and Analysis of Technical Evolution

Mine rescue capsules are important facilities to protect the lives of coal miners, and their safety is directly related to the escape rate in mine accidents. The formulation of GB/T 31939—2015 standard aims to ensure the high quality and reliability of hot-rolled steel plates and strips used in mine rescue capsules to meet safety requirements in extreme environments.

Comparison of standard frameworks

Interpretation of chemical composition and mechanical properties

According to the standard, the chemical composition of hot-rolled steel plates and strips for mining rescue capsules must meet the requirements of Table 1. For example, the carbon content of Q460JSC grade does not exceed 0.12%, and the silicon content does not exceed 0.50%. These strict technical indicators ensure the performance of the material in terms of high strength and durability.

Implementation Suggestions

1. Supplier Selection:Give priority to enterprises with rich production experience and technical strength to ensure material quality.
2. Testing Process Optimization:Establish a complete testing system to ensure that each batch of products meets the standard requirements.
3. Performance Verification:Carry out high temperature and impact tests on steel plates and strips of different thicknesses to ensure their reliability in extreme environments.
4. Quality Traceability:Establish a material traceability system to facilitate rapid location and resolution of problems.