GB/T 6519-2000 in English

《GB/T 6519-2000变形铝合金产品超声波检验方法》由TC243（全国有色金属标准化技术委员会）归口，TC243SC1（全国有色金属标准化技术委员会轻金属分会）执行，主管部门为中国有色金属工业协会。
本标准规定了用超声波脉冲反射技术检验变形铝合金产品的方法。本标准适用于下列板材、型材、锻件、棒材以及其所制成的零部件等变形铝合金产品的超声波检验。不适用于铸件、焊接件及夹层结构。板材――厚度等于或大于10mm以上的，经过锯边或剪边的，横截面呈矩形的轧制板材。型材――除薄板、厚板、异型棒、管材及线材以外的品种，其截面积为大于或等于70mm２；厚度大于或等于10mm，长度比横截面线尺寸大得多的变形材料。锻件――模锻件、自由锻件及锻环的统称。其厚度大于或等于10mm，最大厚度小于３００ｍｍ。棒材――经过挤压，内切圆直径大于或等于２５．０ｍｍ的圆形、方形、六角形的毛料棒材或精整后的成品棒材统称。

1.1 Subject contents
This standard specifies the method to inspect wrought aluminum alloy by ultrasonic pulse reflection technology. The contents include the requirements for inspectors and inspection devices, inspection procedures, acceptance quality grade, inspection record and report, etc.
1.2 Application scope
This standard is applicable to the Ultrasonic inspection of such wrought aluminum alloy products as the following plates, section bars, forgings, bars and their spare parts. It is not applicable to the Ultrasonic inspection of casts, welding parts and sandwich construction.
Plates- the sawed and trimmed rolling material in a thickness larger than or equal to 10mm and possessing a rectangular cross section.
Section bars - the variety except for sheets, thick plates, shaped rods and wire rods; wrought materials whose cross-sectional area is larger than or equal to 70cm2, wall thickness is larger than or equal to 10mm and the length is quite larger than the cross-sectional area line.
Forgings - a general term for die forgings, free forgings and ring forgings. The forgings whose wall thickness is larger than or equal to 10mm and the maximum thickness is less than 300mm.
Rods - a general term for squeezed circular, square and hexagonal rough rods or finished rods with the diameter of the incircle larger than or equal to 25.0 mm.

1 Scope 1
2 Normative References 1
3 Principle 1
4 General Requirements 2
5 Preparation and Requirements of Reference Block 2
6 Inspection Devices and Auxiliary Materials 5
7 Inspection Conditions and Procedures 6
8 Deficient Assessment and Acceptance 7
9 Analytical Inspection Record and Report 9