GB19998-2005
Electrolytic machine tools -- Techincal requirements for safefuarding
电解加工机床 安全防护技术要求
GB 19998-2005 is a current mandatory Chinese national standard for Electrolytic machine tools -- Techincal requirements for safefuarding. It appears in the Electronics compliance cluster with a product safety focus and has an implementation date of Jul 1, 2006.
Applicability depends on product scope, certification route, competent authority notices and transition rules. Requst for the translation or verify source before using this record in a compliance decision.
Compliance overview
Scope and applicability
This standard applies to the safety and safeguarding of electrolytic machine tools operating at a DC voltage not exceeding 60V. It covers various equipment, including electrolytic forming machines, polishing machines, deburring machines, cutting machines, lathes, grinding machines, and engraving machines. Manufacturers and importers of these specific machine tools must comply with this standard to enter the Chinese market. It does not apply to electro-discharge machines (EDM) or other non-electrolytic special processing equipment.
Technical requirements
The standard outlines comprehensive safety requirements across several critical domains. For mechanical hazards, it mandates the elimination of sharp edges, reliable limit switches for reciprocating parts, and interlocking mechanisms for work box doors to prevent electrolyte splash. Machine tools must be designed to prevent accidental movement or falling of components during emergency stops or power interruptions. Regarding electrical safety, the standard specifies requirements for reliable cable connections, proper insulation between the machine and the workpiece, and specific protection levels for electrical cabinets (e.g., IP22 for power supplies, IP54 for others). Electrolytic forming machines are explicitly required to have dual over-current protection measures. For fluid and gas systems, it sets strict guidelines for hydraulic, pneumatic, and electrolyte systems to prevent leaks and withstand pressures up to 1.5 times the rated working pressure. Machines with a working current of 100A or more must be equipped with exhaust pipe interfaces to safely extract hazardous gases and electrolyte mist. Finally, the standard addresses ergonomics and environmental protection. It specifies maximum noise levels (not exceeding 83dB(A)), proper lighting, and extensive anti-corrosion measures for parts directly contacting electrolytes. Components such as work boxes, pumps, and piping must be manufactured from corrosion-resistant materials.
Testing methods
Compliance is verified through a combination of visual inspections, manual checks, and specific functional tests. Key testing areas include verifying the mechanical interlocking of guards, checking the actuating forces of control handles, and validating the pressure resistance of fluid systems. Electrical safety must be tested according to the procedures in GB 5226.1-2002, which includes continuity testing of protective grounding circuits, insulation resistance testing, and dielectric withstand testing. Additionally, a specific dual over-current protection test is required for electrolytic forming machines to ensure power cutoff during overloads.
FAQs
What products are regulated under GB 19998-2005?
This standard regulates electrolytic machine tools operating at a DC voltage of 60V or less, including electrolytic forming machines, polishing machines, deburring machines, cutting machines, lathes, grinding machines, and engraving machines.
Is compliance with GB 19998-2005 mandatory?
Yes, Chapters 5 to 7 of GB 19998-2005 are mandatory. These sections cover the core safety requirements, protective measures, and inspection methods that all applicable machine tools must strictly adhere to.
How does GB 19998-2005 relate to other general machinery safety standards?
The standard references several fundamental mechanical and electrical safety standards, such as GB 5226.1 for electrical equipment and GB/T 15706 for basic safety concepts. However, it specifically tailors the requirements to address the unique hazards of electrolytic machining, such as electrolyte system leaks, anti-corrosion protection, and harmful gas extraction.
The summary above provides a high-level overview of GB 19998-2005. 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 19998-2005 today to access all detailed parameters, tables, and testing procedures.
Applicability hints
- Type
- Safety
- CCS
- J59
- Competent department
- Ministry of Industry and Information Technology
- Technical committee
- Ministry of Industry and Information Technology
Relationships
Replaced by:GB 46037-2025 (Upcoming)