GB2494-2014

Bonded abrasive products―Safety requirements

固结磨具安全要求

GB 2494-2014 é uma norma nacional chinesa obrigatória vigente: Bonded abrasive products―Safety requirements. Setor: Eletrônicos. Foco: Segurança de produtos. Entrada em vigor: 1 de jan. de 2015.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

This standard specifies the safety requirements for bonded abrasive products. It applies to the design, manufacturing, and use of bonded abrasives across various grinding applications, including stationary, mobile, and hand-held machines. It is mandatory for all manufacturers and suppliers of bonded abrasive products entering the Chinese market. The standard excludes coated abrasives.

Requisitos técnicos

The standard outlines general safety principles, requiring bonded abrasives to withstand expected forces and loads during operation. It categorizes maximum working speeds into specific ranges based on the abrasive type and machine category. It defines critical safety factors and burst speed coefficients to prevent wheel breakage caused by centrifugal forces. Specific requirements are established for different machine types, such as stationary, mobile, and hand-held equipment. For hand-held grinding operations, the standard sets lateral load capacity requirements for fiber-reinforced depressed center wheels (Type 27, 28) and flat cutting-off wheels (Type 41, 42) to ensure resistance against side impacts. Additionally, it specifies requirements for permissible unbalance and product marking to ensure proper identification and safe usage. Manufacturers must ensure all safety parameters are strictly met before products leave the factory.

Métodos de ensaio

Safety speed test: Conducted on a rotational test machine to identify significant defects affecting abrasive strength, maintaining the test speed for 30 seconds. Burst speed test: Determines the minimum burst speed by gradually increasing the rotational speed until the minimum requirement is met. All tested samples must be destroyed after this test. Lateral load test: Evaluated according to JB/T 4175 to assess the side impact resistance of specific cutting and grinding wheels. Unbalance measurement: Measured in accordance with GB/T 2492 to ensure operational stability and prevent excessive vibration.

Perguntas frequentes

What products are regulated under GB 2494-2014?

It regulates bonded abrasive products, including grinding wheels, cutting-off wheels, and mounted points used on stationary, mobile, and hand-held machines.

Are there any updates from the previous version of GB 2494?

Yes, GB 2494-2014 replaces the 2003 version, adding terms, definitions, a list of significant hazards, and specific requirements for safety factors, lateral loads, and unbalance.

Is GB 2494-2014 a mandatory standard?

Yes, most clauses are mandatory, except for clause 6.3.3 (lateral load capacity) and Chapter 7 (test methods), which are recommended.

The summary above provides a high-level overview of GB 2494-2014. To ensure complete compliance for your products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 2494-2014 today to access all detailed parameters, tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Produto
CCS: J43
ICS: 25.100.70
Órgão competente: Ministry of Industry and Information Technology
Comitê técnico: Ministry of Industry and Information Technology

Relações

Substitui:GB 2494-2003