GB/T 43325-2023 (English Version)

Standard No.: GB/T 43325-2023
Language: Chinese, Available in English version
Release Date: 2023
Published By: General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China
Latest: GB/T 43325-2023

Scope: GB/T12265 Mechanical safety Minimum distance to prevent human body parts from being squeezed GB/T14776 Ergonomics Principles for design of work position dimensions and their values GB/T15241.2 Ergonomic principles related to mental load Part 2: Design principles GB/T15706—2012 General principles for design of mechanical safety Risk assessment and risk reduction GB/T16251 Ergonomic principles for work system design GB/T16754 Mechanical safety Emergency stop function design principles GB/T16855.1 Mechanical safety Safety-related components of control systems Part 1: General principles for design GB/T18209.1 Mechanical electrical safety Instructions, signs and operations Part 1: GB/T18 on visual, auditory and tactile signals 717.1 Ergonomic design for machinery safety Part 1: Determination of opening dimensions for full body entry into machinery GB/T18717.2 Ergonomic design for machinery safety Part 2: Dimensions of opening dimensions for partial human body entry into machinery GB/T18831 Principles for design and selection of interlocking devices related to machinery safety and protective devices GB/T19436.1 Electrical safety of machinery Electro-sensitive protective equipment Part 1: General requirements and tests GB/T19671 Principles for design and selection of two-hand control devices for machinery safety GB20905 Foundry machinery safety requirements GB/T23821—2022 Machinery safety Safety distance to prevent upper and lower limbs from touching hazardous areas GB/T25370—2020 Terminology of foundry machinery GB/T 25371 Method for measuring sound pressure level of foundry machinery noise GB/T 28780 Machinery safety Overall lighting of machines GB/T 41349 Technical conditions for emergency stop devices for machinery safety

Introduction

Analysis of the core content of the standard

As a supporting recommended standard for GB20905, this standard has established a safety technology system covering the entire process of design, manufacturing, and acceptance for 12 types of casting cleaning equipment, such as impact riser removal hammer and CNC cutting center. Through the triple risk control strategy of intrinsic safety design, protective measures, and use of information, the system controls seven major types of hazardous sources, such as mechanical, electrical, and hydraulic.

Comparison of key safety requirements

class=instrument>Vibration Cleaner

Equipment type	Main hazard	Core protective measures	Verification method
Abrasive wheel cutting machine	Abrasive wheel fragment projection (Level 1.4 hazard)	Mandatory protective cover + anti-loosening device	Functional test + visual inspection
Automatic cleaning unit	Robot extrusion and collision	Safety interlock + emergency stop device	PLr level verification
Automatic cleaning unit	Robot extrusion and collision	Safety interlock + emergency stop device	PLr level verification
Spring Impact (Level 1.2 Danger)	Spacing ≥ 120mm + Warning Signs	GB/T12265 Measurement

Technical Innovations

1. Dynamic Protection System: For automated equipment such as CNC Grinding Center, it is the first time that the safety protection device is required to achieve three-level interlocking with the control system and power system.

2. Deepening of Ergonomics: The GB/T15241.2 psychological load assessment standard is introduced, stipulating that the manual operation force threshold is ≤50N (continuous operation) or ≤100N (intermittent operation).

3. Vibration control: For vibration cleaning machines, the curvature radius of the cable suspension section is ≥4.5 times the outer diameter.

Implementation suggestions

Manufacturers should focus on:

Establish a safety protection device verification list (Appendix B) to ensure that each measure corresponds to 3 verification methods
The instruction manual must include a list of personal protective equipment (such as the vibration attenuation rate of anti-vibration gloves ≥20dB)
Add pressure sensor double protection for hydraulic equipment such as gating riser separators

Users should note: Grinding wheel equipment must establish a debris inspection record, which should be kept for ≥3 years.

Analysis of Standard Evolution

Compared with GB20905-2007, this version has the following major upgrades:

Added safety requirements for automatic cleaning units
Changed noise control from a recommended clause to a mandatory requirement
Refined the protection level of electrical cabinets to IP54 (formerly IP23)

GB/T 43325-2023 history

2023 GB/T 43325-2023 Technical safety specifications for cutting, grinding and finishing equipment for cleaning castings in foundry machinery