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GB/T 32186-2015 English PDF (GBT32186-2015)

GB/T 32186-2015 English PDF (GBT32186-2015)

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GB/T 32186-2015: Test methods of cleanliness of aluminium and aluminium alloy ingots

This Standard specifies the test methods of cleanliness of aluminum and aluminum alloy ingots. This Standard is applicable to the inspection of internal cleanliness of deformed aluminum and aluminum alloy ingots.
GB/T 32186-2015
GB
NATIONAL STANDARD OF THE
PEOPLE REPUBLIC OF CHINA
ICS 77.040.99
H 20
Test Methods of Cleanliness of Aluminum and Aluminum
Alloy Ingots
ISSUED ON: DECEMBER 10, 2015
IMPLEMENTED ON: JULY 1, 2016
Issued by: General Administration of Quality Supervision, Inspection and Quarantine of the PEOPLE Republic of China;
Standardization Administration of the PEOPLE Republic of China.
Table of Contents
Foreword ... 3
1 Scope ... 4
2 Normative References ... 4
3 Test Methods of Cleanliness ... 4
4 Test Report ... 7
5 Description of Test Results ... 8
Appendix A (informative) Examples of Test Reports ... 9
Test Methods of Cleanliness of Aluminum and Aluminum
Alloy Ingots
1 Scope
This Standard specifies the test methods of cleanliness of aluminum and aluminum alloy ingots. This Standard is applicable to the inspection of internal cleanliness of deformed aluminum and aluminum alloy ingots.
2 Normative References
The following documents are indispensable to the application of this document. In terms of references with a specified date, only versions with a specified date are applicable to this document. In terms of references without a specified date, the latest version (including all the modifications) is applicable to this document.
GB/T 3246.1 Inspection Method for Structure of Wrought Aluminum and Aluminum Alloy Products - Part 1: Inspection Method for Microstructure
GB/T 3246.2 Inspection Method for Structure of Wrought Aluminum and Aluminum Alloy Products - Part 2: Inspection Method for Macrostructure
GJB 5909 Determination of Hydrogen in Aluminum and Aluminum Alloys - Heating Extraction - Thermal Conductivity Method
YS/T 67-2012 Wrought Aluminum and Aluminum Alloy Columniform Ingots
YS/T 590-2012 Wrought Aluminum and Aluminum Alloy Rectangle Ingots
YS/T 600 Analysis Method of Hydrogen in Liquid Aluminum and Aluminum Alloys - The Method of the Closed Gas Loop Circulation
YS/T 874-2013 Ultrasonic Inspection of Wrought Aluminum Alloy Columniform Ingots by the Water Immersion Method
YS/T 1004 Molten Aluminum and Aluminum Alloys
3 Test Methods of Cleanliness
3.1 Test Method of Hydrogen and Slag Content
3.1.1 Test method of hydrogen content
3.1.1.1 Test method of hydrogen in liquid state
In the launder between the outlet of the degassing device and the gating system, conduct on- line testing of hydrogen. The test method of hydrogen shall comply with the stipulations of YS/T 600.
3.1.1.2 Test method of hydrogen in solid state
The test method of hydrogen in solid state shall comply with the stipulations of GJB 5909. 3.1.2 Test method of slag content
3.1.2.1 Online slag test method
LIMCA online slag tester1) should be used to test the melt inclusion content in the launder before casting. The test method shall comply with the instructions of the slag tester. 3.1.2.2 Offline slag test method
PoDFA offline slag tester1) should be used to test the melt inclusion content in the launder before casting. The test method shall comply with the instructions of the slag tester. 3.1.2.3 Macrostructure test method
3.1.2.3.1 Rectangular ingots: for each melting, randomly choose one piece of ingot. In accordance with the stipulations of Table 3 in YS/T 590-2012, cut off the head and tail, then, respectively cut macrostructure specimens with a thickness of 20 mm ~ 30 mm from both ends of the ingot. Other requirements shall comply with the stipulations of GB/T 3246.2. 3.1.2.3.2 Columniform ingots: for each casting, take at least one piece of ingot (for each melting, take at least two pieces of ingot). In accordance with the stipulations of Table 3 in YS/T 67- 2012, cut off the head and tail, then, respectively cut macrostructure specimens with a thickness of 20 mm ~ 30 mm from both ends of the ingot. Other requirements shall comply with the stipulations of GB/T 3246.2.
3.1.2.4 Microstructure test method
3.1.2.4.1 For each melting, randomly choose one piece of ingot. For columniform ingots, in accordance with the stipulations of Table 3 in YS/T 67-2012, cut off the head and tail; for rectangular ingots, in accordance with the stipulations of Table 3 in YS/T 590-2012, cut off the head and tail. From any end of the ingot after cutting off the head and tail, cut a specimen blank with a thickness of 20 mm ~ 30 mm.
3.1.2.4.2 At 1/2 radius of the cross-section of the columniform ingot specimen blank and at the 1) LIMCA online slag tester or PoDFA offline slag tester are examples of suitable commercially available products. This information is provided for the convenience of users of this Standard and does not constitute an endorsement of these products.

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