GB28244-2012

Automatic metalforming machinery - Safety requirements

自动锻压机安全技术要求

GB 28244-2012 est une norme nationale chinoise obligatoire en vigueur : Automatic metalforming machinery - Safety requirements. Secteur : Électronique. Thème principal : Sécurité des produits. Entrée en vigueur : 1 janv. 2013.

L’applicabilité dépend du périmètre du produit, de la voie de certification, des avis des autorités et des règles de transition. Demandez une traduction ou vérifiez la source avant d’utiliser cette fiche pour une décision de conformité.

Aperçu de conformité

Cet aperçu n’est actuellement disponible qu’en anglais.

Champ d’application

GB 28244-2012 applies to automatic metalforming machinery, including various cold heading machines and cold forming machines such as automatic cold headers, nut cold headers, thread rolling machines, and spring coiling machines. This standard is mandatory for manufacturers of these specified metalforming equipment entering the Chinese market. It does not apply to hot forging machinery.

Exigences techniques

The standard specifies comprehensive requirements for the design, manufacturing, and safe operation of automatic metalforming machinery. It outlines the responsibilities of suppliers, users, and operators in ensuring machine safety. Suppliers must conduct risk assessments and eliminate hazards through inherent safe design or control them via appropriate safeguarding measures. Manufacturers must provide adequate safety guards and instruction manuals for every new machine. Regarding design and manufacturing, the standard mandates compliance with electrical safety (referencing GB 5226.1), pneumatic, and hydraulic systems. It specifies that control systems must have reliable stop and emergency stop functions, taking precedence over start circuits. Category 0 stop functions are mandatory, and emergency stop devices must be easily identifiable and accessible. The standard also covers operational modes like continuous run and jog modes, ensuring that jog controls prevent accidental operation. Additionally, it sets forth noise limits (referencing JB 9972 and JB 9975) and requires the provision of working platforms, ladders, and railings for safe access during maintenance at heights.

Méthodes d’essai

The standard outlines evaluation procedures for electrical safety, including protective bonding circuit continuity tests, insulation resistance tests, and dielectric withstand tests. It also requires noise level assessments to ensure compliance with specified acoustic limits. Furthermore, functional verification of interlocking guards and safety devices (such as photoelectric and presence sensing devices) is mandated to ensure they effectively stop hazardous motions during operation.

Questions fréquentes

What products are regulated under GB 28244-2012?

GB 28244-2012 regulates automatic metalforming machinery, specifically including automatic cold headers, nut cold headers, thread rolling machines, spring coiling machines, and multi-station cold formers. It is mandatory for all such equipment manufactured or sold in China.

What are the key electrical safety requirements in this standard?

The standard requires compliance with GB 5226.1 for electrical equipment. It mandates specific tests for protective bonding circuit continuity, insulation resistance, and dielectric withstand voltage to prevent electric shock and unexpected hazards.

Does GB 28244-2012 specify requirements for emergency stop functions?

Yes, every machine must have one or more emergency stop devices that can stop all hazardous movements. The emergency stop function must comply with Category 0 stop requirements as defined in GB 16754 and must override all other stop functions.

The summary above provides a high-level overview of GB 28244-2012. 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 28244-2012 today to access all detailed parameters, tables, and testing procedures.

Indications d’applicabilité

Type: Sécurité
CCS: J62
ICS: 25.120.10
Autorité compétente: Ministry of Industry and Information Technology
Comité technique: Ministry of Industry and Information Technology

Relations

Partiellement remplacée par:GB 17120-2025 (En vigueur)