GB/T 25716-2022Cold chamber die casting machines for magnesium alloys (English PDF)

Foreword

This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1: Structure and Drafting Rules of Standardization Documents" drafted.

This document replaces GB/T 25716-2010 "Magnesium Alloy Cold Chamber Die Casting Machine". Compared with GB/T 25716-2010, except for structural adjustment and In addition to editorial changes, the main technical changes are as follows.

--- Deleted the definition of "horizontal pad" (see 3.1 of the.2010 edition);

--- Added the definition of "magnesium alloy cold chamber die casting machine" (see 3.1);

--- Changed the definition of "injection stroke", and supplemented the measurement method of injection stroke in 6.1.1 (see 3.2,.2010 edition 3.3);

--- Changed the definition of "repetition accuracy" (see 3.4, 3.5 of the.2010 edition);

---In the technical parameters, Table 1 adds the clamping force range, deletes the "specific pressure" item of "maximum casting projected area", and adjusts the parameters. Modified (see Table 1, Table 1 of the.2010 edition);

--- Added the requirement of "Medium used by die casting machine" (see 5.1.2);

--- Change "cleanliness code 23/20" to "cleanliness code 22/19" (see 5.1.9, 5.1.9 of the.2010 edition);

--- Increased the clamping force range, and changed some parameters (see Table 2, Table 2 of the.2010 edition);

--- Changed the technical requirements of "accumulator", "machine noise", "safety", "dry operation", "load operation" and "safety design of furnace" (see 5.4, 5.5, 5.6, 5.9, 5.10, 5.11, 5.5, 5.6, 5.7, 5.9, 5.10, 5.13 of the.2010 edition);

--- Changed "optional device" to "integrated control interface" and "complete set", and standardized the die-casting machine supporting equipment (see 5.7, 5.8, 5.8 of the.2010 edition);

--- Added "energy consumption index requirements" (see 5.11);

--- Added the detection of the noise of the whole machine, the detection of energy consumption, etc. (see Chapter 6);

--- Changed the item of "routine item detection" (see 6.1.4, 6.1.5, 6.2, 6.6 of the.2010 edition);

--- Changed the accuracy test and requirements (see 6.2, 6.1.3, 6.1.4 of the.2010 edition);

--- Changed the description of "repetition accuracy" to make the standard stricter (see 6.2.2, 6.1.4 of the.2010 edition);

--- Changed the description in the formula, "shot amount" was changed to "casting amount"; "effective stroke of injection punch" was changed to "injection stroke" (see 6.3.3, 6.5 of the.2010 edition);

--- Deleted "Ejector Force and Ejector Stroke Detection" (see 6.12 of the.2010 edition);

--- Changed the "dry running detection" (see 6.10, 6.15 of the.2010 edition);

--- Added "load operation detection" (see 6.11);

--- Added "Furnace Safety Design Detection" (see 6.12);

--- Delete the imprecise descriptions such as "allowing to do tests on the user's site" and "simple packaging or no packaging according to the contract requirements", and replace the Standardization (see 7.2.4, 8.4 of the.2010 edition);

--- Changed the "marking, packaging, transportation and storage" requirements (see Chapter 8, Chapter 8 of the.2010 edition).

1 Scope

This document specifies the basic parameters, technical requirements, test methods, inspection rules, as well as marking, packaging, and transportation of magnesium alloy cold chamber die casting machines. and storage.

This document applies to horizontal cold chamber die casting machines for magnesium alloy die casting (hereinafter referred to as "die casting machines"). Vertical cold chamber press for magnesium alloy die casting The casting machine can refer to the implementation.

2 Normative references

The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, dated citations documents, only the version corresponding to that date applies to this document; for undated references, the latest edition (including all amendments) applies to this document.

GB/T 191 Graphical signs of packaging, storage and transportation

GB/T 1800.1-2020 Product Geometric Specifications (GPS) Linear Dimension Tolerance ISO Code System Part 1: Tolerances, Basis of Deviation and Fit

GB 2893 Safety Color

GB 2894 Safety Signs and Guidelines for their Use

GB/T 3766 General rules and safety requirements for hydraulic transmission systems and their components

GB/T 4205 Basic and safety rules for human-machine interface signs and operating rules

GB 5083 General Rules for Safety and Hygiene Design of Production Equipment

GB/T 5226.1-2019 Mechanical and Electrical Safety Mechanical and Electrical Equipment Part 1: General Specifications

GB/T 7932 General rules and safety requirements for pneumatic systems and their components

GB/T 7935 General Specifications for Hydraulic Components

GB/T 9969 General Principles of Instruction Manual for Industrial Products

GB/T 13306 Signs

GB/T 13384 General technical conditions for packaging of mechanical and electrical products

GB 20906-2007 Safety technical requirements for die-casting units

GB/T 21269-2018 Cold chamber die casting machine

GB/T 25371 Foundry machinery noise sound pressure level measurement method

GB/T 31562-2015 Determination method of foundry machinery cleanliness

GB/T 37365-2019 Performance testing method of die casting unit

GB/T 39962-2021 Energy efficiency limit value and energy efficiency grade of die casting machine

JB/T 8356 Machine Tool Packaging Specifications

JB/T 13238-2017 Technical conditions of die casting machine furnace

3 Terms and Definitions

The terms and definitions defined in GB/T 21269-2018 and the following terms and definitions apply to this document.