GB20905-2007

Safety requirements for foundry machinery

铸造机械安全要求

GB 20905-2007 es una norma nacional china obligatoria vigente: Safety requirements for foundry machinery. Sector: Electrónica. Enfoque: Seguridad de productos. Entrada en vigor: 1 oct 2007.

La aplicabilidad depende del alcance del producto, la vía de certificación, los avisos de la autoridad competente y las reglas de transición. Solicite una traducción o verifique la fuente antes de usar esta ficha en una decisión de cumplimiento.

Resumen de cumplimiento

Este resumen está disponible por ahora solo en inglés.

Alcance y aplicabilidad

This standard specifies the safety requirements for the design and manufacturing of foundry machinery. It applies to all types of foundry machinery (hereinafter referred to as machines) used in metal casting processes. This standard is mandatory for all foundry machinery manufacturers intending to sell or operate equipment in China.

Requisitos técnicos

The standard outlines comprehensive general safety requirements, stating that machine structures must comply with GB 5083 and GB/T 15706.1. It mandates that exposed components and ancillary devices must meet safety criteria to prevent hazards from flying materials, fragments, or liquids. Manufacturers must ensure all moving parts are equipped with appropriate protective devices unless the risk cannot be reduced by such devices. It details specific requirements for safety protection devices, including fixed, movable, adjustable, and interlocked guards. The standard also specifies the use of two-hand control devices and automatic stop mechanisms, requiring that two-hand buttons must be pressed simultaneously to initiate operation, preventing single-hand or elbow manipulation. Requirements for control mechanisms include reliable manual operations, key-locked selection switches for multiple working modes, and strict guidelines for emergency stop functions. Emergency stops must be easily accessible, self-locking, and colored red with a yellow background, ensuring the machine cannot restart before being reset. Additional technical requirements cover braking and clamping devices, hydraulic and pneumatic systems, lubrication, and cooling systems. The standard mandates that clamping devices must have interlocks to prevent opening under pressure, and hydraulic systems must include overload protection devices. Environmental and occupational health requirements, such as local ventilation for harmful substances and noise control, are also specified.

Métodos de ensayo

While primarily a design and manufacturing standard, GB 20905-2007 references various evaluation and testing procedures to verify compliance. This includes structural integrity checks for critical components, functional testing of interlock devices and emergency stop mechanisms, and verification of two-hand control response times. Noise measurement methods must comply with relevant technical condition standards, and the effectiveness of local ventilation and dust removal systems must be evaluated against specified airflow and efficiency indicators.

Preguntas frecuentes

What products are regulated under GB 20905-2007?

GB 20905-2007 applies to all types of foundry machinery used in metal casting processes, including equipment for sand preparation, molding, core making, and cleaning.

Is GB 20905-2007 a mandatory standard?

Yes, the entire text of GB 20905-2007 is mandatory. All manufacturers must comply with its safety requirements for designing and manufacturing foundry machinery in China.

What are the key safety device requirements in this standard?

The standard requires the configuration of at least one suitable safety protection device for working danger zones. It specifically details requirements for two-hand control devices, interlocked guards, and emergency stop mechanisms.

The summary above provides a high-level overview of GB 20905-2007. 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 20905-2007 today to access all detailed parameters, tables, and testing procedures.

Indicaciones de aplicabilidad

Tipo: Seguridad
CCS: J61
ICS: 25.120.30
Organismo competente: Ministry of Industry and Information Technology
Comité técnico: Ministry of Industry and Information Technology

Relaciones

Sustituida por:GB 20905-2025 (Próxima)