Foreword
Codeofchina.com is in charge of this English translation. In case of any doubt about the English translation, the Chinese original shall be considered authoritative.
This document is developed in accordance with the rules given in GB/T 1.1-2020 Directives for standardization - Part 1: Rules for the structure and drafting of standardizing documents.
This document replaces GB/T 13821-2009 Zinc alloy die castings. In addition to structural adjustments and editorial changes, the following main technical changes have been made with respect GB/T 13821-2009:
a) The "Scope" has been modified (see Clause 1 hereof; Clause 1 of Edition 2009);
b) The classification and grading of zinc alloy die castings have been changed, and the marking of inc alloy die castings has been deleted (see Clause 4 hereof; Clause 3 of Edition 2009);
c) The technical requirements have been modified (see Clause 5 hereof; Clause 4 of Edition 2009);
d) The quality assurance has been deleted (see Clause 5 in Edition 2009);
e) The test method has been modified (see Clause 6 hereof; Clause 6 of Edition 2009);
f) Inspection rules have been modified (see Clause 7 hereof; Clause 6 of Edition 2009);
g) The delivery, marking, packaging, transportation and storage have been modified (see Clause 8 hereof; Clause 7 of Edition 2009).
Attention is drawn to the possibility that some of the parts of this document may be the subject of patent rights. The issuing body of this document shall not be held responsible for identifying any or all such patent rights.
This document was proposed by and is under the jurisdiction of the National Technical Committee on Foundry of Standardization Administration of China (SAC/TC 54).
This document was issued in 1992 for the first time, its first revision was issued in 2009, and this is the second revision.
Zinc alloy die castings
1 Scope
This document specifies the classification and grading, technical requirements, test method and inspection rules as well as delivery, marking, packaging, transportation and storage of zinc alloy die castings.
This document is applicable to the manufacturing and quality inspection of zinc alloy die castings.
2 Normative references
The following documents contain requirements which, through reference in this text, constitute provisions of this document. For dated references, only the edition cited applies. For undated references, the latest edition (including any amendments) applies.
GB/T 228.1 Metallic materials - Tensile testing - Part 1 : Method of test at room temperature
GB/T 231.1 Metallic materials - Brinell hardness test - Part 1: Test method
GB/T 1182 Geometrical Product Specifications (GPS) - Geometrical tolerances of form orientation location and run-out
GB/T 1958 Geometrical Product Specifications (GPS) - Geometrical tolerance - Verification
GB/T 2828.1 Sampling procedures for inspection by attributes - Part 1: Sampling schemes indexed by acceptance quality limit (AQL) for lot-by-lot inspection
GB/T 2829 Sampling procedures and tables for periodic inspection by attributes (Apply to inspection of process stability)
GB/T 3177 Geometrical product specifications (GPS) - Inspection of plain workpiece sizes
GB/T 5611 Foundry terminology
GB/T 5678 Sampling methods of spectrochemical analysis for cast alloys
GB/T 6414 Castings - System of dimensional tolerances and machining allowances
GB/T 10610 Geometrical product specifications (GPS) - Surface texture: Profile method - Rules and procedures for the assessment of surface texture
GB/T 11351 Mass tolerances of casting
GB/T 12689.1 Methods for chemical analysis of zinc and zinc alloys - Part 1: Determination of aluminum content - Chromazurol S-polyethylene glycol octyl phenylether-cetylpyridine bromine spectrophotometry, Chromeazurol S spectrophotometric method and EDTA titrimetry
GB/T 12689.3 The methods for chemical analysis of zinc and zinc alloys - The determination of cadmium content - The flame atomic absorption spectrometric method
GB/T 12689.4 The methods for chemical analysis of zinc and zinc alloys - The determination of copper content - The lead diethyldithio-carbamate spectrophotometric method and the flame atomic absorption spectrometric method and the electrolytic method
GB/T 12689.5 The methods for chemical analysis of zinc and zinc alloys - The determination of iron content - The sultosalicylic acid spectrometric method and the flame atomic absorption spectrometric method
GB/T 12689.6 The methods for chemical analysis of zinc and alloys - The determination of lead content - The oscillopolarographic method
GB/T 12689.7 Methods for chemical analysis of zinc and zinc alloys - Part 7: Determination of magnesium content - Flame atomic absorption spectrometric method
GB/T 12689.10 The methods for chemical analysis of zinc and zinc alloys - The determination of tin content - The phenylfluorone-cetyltrimethyla-mmonium bromide spectrophotometric method
GB/T 12689.12 The methods for chemical analysis of zinc and zinc alloys - The determination of lead, cadmium, iron, copper, tin, aluminium, arsenic, stibium, magnesium lanthanum and cerium contents - The inductively coupled plasma-optical emission spectrometric method
GB/T 13822 Test specimens for non ferrous diecasting alloys
GB/T 15056 Casting surface roughness - Appraising method
GB/T 26042 Methods for analysis of zinc and zinc alloys - The optical emission spectrometry
GB/T 34634 Geometrical product specifications (GPS) - Measurement of linear sizes (500 mm-10000 mm) of plain workpiece - Choice of measuring instrument
GB/T 35388 Non-destructive testing - X-ray digital radiography - Practice
GB/T 36589 Castings - Industrial computed tomography (CT) testing
GB/T 39638 X-ray digital radiographic testing for casting
3 Terms and definitions
For the purposes of this document, the terms and definitions given in GB/T 5611 apply.
4 Classification and grading of zinc alloy die castings
4.1 Classification
The zinc alloy die castings are classified into two categories according to the requirements of use, as shown in Table 1.
Foreword i
1 Scope
2 Normative references
3 Terms and definitions
4 Classification and grading of zinc alloy die castings
5 Technical requirements
6 Test method
7 Inspection rules
8 Delivery, marking, packaging, transportation and storage
Annex A (Informative) Designation comparison of zinc alloys and typical mechanical and physical performances
Annex B (Informative) Classification requirements for permissible surface defects of zinc alloy die castings
