QJ 169A-2011 Specification for aluminum alloy castings
1 Scope
This specification specifies requirements, quality assurance requirements, and delivery preparation for aluminum alloy castings produced by sand casting and permanent mold casting.
This specification is applicable to aluminum alloy castings produced by sand and permanent mold casting processes, which are designed for aerospace products.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this specification. For dated references, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply to this specification. However, parties to agreements based on this specification are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 228 Metallic materials - Tensile testing at ambient temperature
GB/T 231.1 Metallic materials - Brinell hardness test - Part 1: Test method
GB/T 1173 Cast aluminium alloy
GB/T 6060.1 Roughness comparison specimen - Cast surface
GB/T 6414-1999 Castings - System of dimensional tolerances and machining allowances
GB/T 6987 Methods for chemical analysis of aluminium and aluminium alloys
GB/T 11346-1989 Classification of pinhole by radiographic examination for aluminum alloy castings
GB/T 11351 Mass tolerances for castings
GJB 179 Sampling procedures and tables for inspection by attributes
GJB 1187 Radiographic inspection
GJB 2367 Liquid penetrant inspection
HB 5395-1988 Standard for classification of elongated pinholes in radiographic inspection of aluminium alloy castings
HB 5396-1988 Standard for classification of spongy shrinkage in radiographic inspection of aluminium alloy castings
HB 5397-1988 Standard for classification of disperse shrinkage in radiographic inspection of aluminum alloy castings
JB/T 7946.3 Metallograph of cast aluminium alloys - Part 3: Cast aluminium alloys pinhole
QJ 1309A-2008 Classification of disperse porosity for ZL104 alloy castings
QJ 3072 Technological requirements for repair welding for aluminium alloy castings
3 Requirements
3.1 Design
3.1.1 The casting class shall be specified on the drawings by the design department or the user. Unclassified castings shall be regarded as Class III castings.
3.1.2 Generally, the following items shall be indicated on the part drawing:
a) Alloy designation, alloy standard number, casting method, casting class, heat treatment condition, and number of this specification;
Example of indication:
b) Dimensional accuracy grade and roughness of unmachined surfaces of the castings;
c) Machining datum surfaces;
d) Marking locations;
e) Areas where repair welding is not permitted;
QJ 169A-2011 Specification for aluminum alloy castings
1 Scope
This specification specifies requirements, quality assurance requirements, and delivery preparation for aluminum alloy castings produced by sand casting and permanent mold casting.
This specification is applicable to aluminum alloy castings produced by sand and permanent mold casting processes, which are designed for aerospace products.
2 Normative references
The following documents contain provisions which, through reference in this text, constitute provisions of this specification. For dated references, subsequent amendments (excluding corrections) to, or revisions of, any of these publications do not apply to this specification. However, parties to agreements based on this specification are encouraged to investigate the possibility of applying the most recent editions of the normative documents indicated below. For undated references, the latest edition of the normative document referred to applies.
GB/T 228 Metallic materials - Tensile testing at ambient temperature
GB/T 231.1 Metallic materials - Brinell hardness test - Part 1: Test method
GB/T 1173 Cast aluminium alloy
GB/T 6060.1 Roughness comparison specimen - Cast surface
GB/T 6414-1999 Castings - System of dimensional tolerances and machining allowances
GB/T 6987 Methods for chemical analysis of aluminium and aluminium alloys
GB/T 11346-1989 Classification of pinhole by radiographic examination for aluminum alloy castings
GB/T 11351 Mass tolerances for castings
GJB 179 Sampling procedures and tables for inspection by attributes
GJB 1187 Radiographic inspection
GJB 2367 Liquid penetrant inspection
HB 5395-1988 Standard for classification of elongated pinholes in radiographic inspection of aluminium alloy castings
HB 5396-1988 Standard for classification of spongy shrinkage in radiographic inspection of aluminium alloy castings
HB 5397-1988 Standard for classification of disperse shrinkage in radiographic inspection of aluminum alloy castings
JB/T 7946.3 Metallograph of cast aluminium alloys - Part 3: Cast aluminium alloys pinhole
QJ 1309A-2008 Classification of disperse porosity for ZL104 alloy castings
QJ 3072 Technological requirements for repair welding for aluminium alloy castings
3 Requirements
3.1 Design
3.1.1 The casting class shall be specified on the drawings by the design department or the user. Unclassified castings shall be regarded as Class III castings.
3.1.2 Generally, the following items shall be indicated on the part drawing:
a) Alloy designation, alloy standard number, casting method, casting class, heat treatment condition, and number of this specification;
Example of indication:
b) Dimensional accuracy grade and roughness of unmachined surfaces of the castings;
c) Machining datum surfaces;
d) Marking locations;
e) Areas where repair welding is not permitted;
