GB/T 25717-2021Hot 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 25717-2010 "Magnesium Alloy Hot Chamber Die Casting Machine". Compared with GB/T 25717-2010, except for structural adjustment and In addition to editorial changes, the main technical changes are as follows:

--- Added the terms and definitions defined by citing JB/T 6309.1 and GB/T 21269-2018, and deleted "ejection force" and "ejection line" terms and Definitions (see Chapter 3, Chapter 3 of the:2010 edition);

--- Changed Table 1, deleted two items of stroke from the nozzle, system working pressure, added two parameters of furnace capacity and melting rate (see Table 1, Table 1 of the 2010 edition);

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

--- Changed the requirements for "lubrication system of die casting machine" (see 5.1.6, 5.1.6 of the 2010 edition);

--- Changed the requirements for "precision of die casting machine" (see 5.2, 5.2 of the 2010 edition);

--- Changed the requirements of "machine noise" (see 5.5, 5.6 of the 2010 edition);

--- Changed the relevant clauses of "Security Requirements" (see 5.6, 5.7 of the 2010 edition);

--- Changed the "requirements for heat-resistant parts" (see 5.8);

--- Changed the "dry running requirements" (see 5.10, 5.11 of the 2010 edition);

--- Changed the "load operation requirements" (see 5.11);

--- Added "energy consumption index requirements" (see 5.12);

--- Changed the requirements of "appearance quality of the whole machine" (see 5.13, 5.3 of the 2010 edition);

--- Added "Regular Item Detection" (see 6.1);

--- Changed the detailed description of "Clamping Force Detection Item" (see 6.1.2, 6.2 of the 2010 edition);

--- Delete the parallelism detection of the movable mold mounting plate and the fixed mold mounting plate, and the parallelism detection of the tie rods (see 6.9 of the 2010 edition, 6.10);

--- Added "Accuracy Detection" (see 6.2);

--- Delete "system leakage detection" and "system pressure detection" for hydraulic system detection (see 6.7.2, 6.7.3 of the 2010 edition);

--- Added the "Energy Consumption Detection" method (see 6.8);

--- Added "Testing of heat-resistant parts" (see 6.10);

--- Added "Dry running detection" (see 6.11);

--- Added "detection of load operation" (see 6.12);

--- Deleted "simple packaging or no packaging according to contract requirements" (see 8.4 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 hot chamber die casting machines. and storage.

This document applies to hot chamber die casting machines (hereinafter referred to as "die casting machines") for the production of magnesium alloy die castings.

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

JB/T 6309.1 Hot Chamber Die Casting Machine Part 1. Basic Parameters

JB/T 6309.2 Hot Chamber Die Casting Machine Part 2. Accuracy Inspection

JB/T 6309.3-2015 Hot Chamber Die Casting Machine Part 3. Technical Conditions

JB/T 8356 Machine Tool Packaging Specifications

3 Terms and Definitions

Terms and definitions defined in JB/T 6309.1 and GB/T 21269-2018 apply to this document. END. Draft Version (GB/T 25717-2021)