GB/T 42156-2023 (English Version)

Standard No.: GB/T 42156-2023
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 42156-2023

Scope: GB/T5226.1 Mechanical electrical safety Mechanical electrical equipment Part 1: General technical conditions GB/T6576 Machine tool lubrication system GB/T7932 Pneumatic general rules and safety requirements for systems and their components GB/T13306 Signage GB/T15629.16 Information technology Telecommunications and information exchange between systems Specific requirements for local area networks and metropolitan area networks Part 16: Air interface for broadband wireless multimedia systems GB/T17421.2 General rules for machine tool inspection Part 2: Determination of positioning accuracy and repeatability of CNC axes GB20905 Safety requirements for casting machinery GB/T 25138 Standard sand for calibrating foundry binders GB/T25370 Terminology of foundry machinery GB/T25371 Method for measuring sound pressure level of foundry machinery noise GB/T25711-2010 General technical requirements for foundry machinery GB/T26220 General technical requirements for industrial automation systems and integrated machine tool numerical control systems GB/T26803.2 Industrial control computer system bus Part 2: General technical requirements for system external bus serial interface GB/T26803.3 Industrial control computer system bus Part 3: General technical requirements for system external bus parallel interface GB/T35351 Terminology of additive manufacturing JB/T 8497 Technical requirements for bowl-shaped resin sand mixer

Introduction

1. Standard Overview

GB/T 42156—2023 "General Technical Specification for Foundry Sand Mold 3D Printing Equipment" is my country's first national standard for foundry sand mold 3D printing equipment, which aims to unify industry technical requirements and improve product quality and safety. This standard applies to the design, manufacture and acceptance of digital casting equipment that uses binder jetting to manufacture sand molds (cores).

2. Background of Standard Formulation

With the digital transformation of the foundry industry, 3D printing technology is increasingly used in sand mold manufacturing. However, the lack of unified technical standards in the industry has led to uneven product quality. The introduction of this standard fills this gap and provides a scientific basis for the design, production and testing of equipment.

3. Comparison of standard frameworks

Dimensions	GB/T 42156—2023	Comparison with international standards
Technical requirements	Detailed specifications for the technical indicators of the equipment, including printing accuracy, maximum forming size, etc.	In line with international standards such as the ISO 230 series, but more localized in details.
Test methods	Explicitly specifies test methods such as positioning accuracy and printing speed.	Consistent with ANSI B126.94, but adds special requirements to adapt to the domestic foundry industry.
Safety protection	Emphasis on the safety and hygienic design of the equipment.	Basically consistent with the requirements of the EU Machinery Directive, but more stringent in some details.

4. Main contents of the standard

4.1 Technical requirements

The equipment must meet the following technical indicators: Printing accuracy error does not exceed 5%, The maximum forming size is not less than the calibration value, Safety protection devices are complete. At the same time, the hydraulic, pneumatic and lubrication systems of the equipment must meet the requirements of national standards.

4.2 Safety protection and hygienic requirements

The equipment must be equipped with a protective cover, and an emergency stop button and power-off protection function must be set. The safety protection design must comply with the requirements of GB 20905 to ensure the safety of operators.

5. Implementation Advice

5.1 Equipment Manufacturer

Design and produce equipment in strict accordance with the standards to ensure that all indicators meet the standards.
Provide complete random documents and technical support to facilitate user operation and maintenance.

5.2 User

Read the product manual carefully before using the equipment and receive necessary training.
Regularly check the protective devices and safety functions of the equipment to ensure their normal operation.

5.3 Inspection Agency

Strictly carry out type inspection in accordance with the standards to ensure that the equipment meets the requirements.
Periodically conduct random inspections on the equipment provided by users to ensure product quality.

GB/T 42156-2023 Referenced Document

GB 20905 Safety requirements for foundry machinery
GB/T 13306 Plates
GB/T 15629.16 Information technology－Telecommunications and information exchange between systems－Local and metropolitan area networks—Specific requirements—Part 16: Air interface for broadband wireless multimedia systems
GB/T 17421.2 General Rules for Machine Tool Inspection Part 2: Determination of Positioning Accuracy and Repetitive Positioning Accuracy of CNC Axis*， 2023-08-06 Update
GB/T 25138 Calibration of standard silica sand for casting binders*， 2024-03-15 Update
GB/T 25370 Foundry machinery—Vocabulary
GB/T 25371 Foundry machinery.Measurement method of sound pressure level
GB/T 25711 Foundry machinery—General technical specification*， 2023-05-23 Update
GB/T 26220 Industrial automation systems and integration.Numerical control of machines.General requirements for numerical control systems
GB/T 26803.2 Industrial control computer system.Bus.Part 2:System external bus.General specification for serial interface
GB/T 26803.3 Industrial control computer system.Bus.Part 3:System external bus.General specification for parallel interface
GB/T 35351 Additive Manufacturing Terminology*， 2025-05-30 Update
GB/T 5226.1 Electrical safety of machinery—Electrical equipment of machines—Part 1:General requirements
GB/T 6576 Machine tools--Lubrication systems
GB/T 7932 Pneumatic fluid power-General rules and safety requirements for systems and their components
JB/T 8497 Resin sand bowl type sand mixer.Technical requirements

GB/T 42156-2023 history

2023 GB/T 42156-2023 General Technical Specifications for Foundry Sand Mold 3D Printing Equipment