GB/T 40391-2021 English PDF (GBT40391-2021)

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GB/T 40391-2021: Aluminum matrix composite wafers
GB/T 40391-2021
Aluminum matrix composite wafers
ICS 77.150.10
CCSH61
National Standards of People's Republic of China
Aluminum-based composite wafer
Released on 2021-08-20
2022-03-01 implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Aluminum-based composite wafer
1 Scope
This document specifies the product classification, requirements, test methods, inspection rules and signs, packaging, transportation, storage and quality of aluminum-based composite wafers
The content of the certificate and purchase order (or contract).
This document is applicable to aluminum-based composite wafers for cooking pots, including aluminum-based composite wafers produced by rolling composite and explosive composite methods (below
Referred to as composite wafer).
2 Normative references
The content of the following documents constitutes an indispensable clause of this document through normative references in the text. Among them, dated quotations
Only the version corresponding to the date is applicable to this document; for undated reference documents, the latest version (including all amendments) is applicable to
This document.
GB/T 223 (all parts) Steel and alloy chemical analysis methods
GB/T 700 carbon structural steel
GB/T 3190 Chemical composition of wrought aluminum and aluminum alloy
GB/T 3199 Packaging, marking, transportation and storage of aluminum and aluminum alloy processed products
GB/T 3246.1 Microstructure inspection method for deformed aluminum and aluminum alloy products Part 1.Microstructure inspection method
GB/T 3880.3 General industrial aluminum and aluminum alloy plates and strips Part 3.Dimensional deviation
GB/T 4156 Erickson Cupping Test of Sheets and Strips of Metallic Materials
GB/T 7999 Aluminium and aluminum alloy photoelectric direct-reading emission spectrum analysis method
GB/T 8170 Numerical rounding rules and the expression and determination of limit values
GB/T 16865 Specimen and methods for tensile test of deformed aluminum, magnesium and its alloy processed products
GB/T 17432 Sampling method for chemical composition analysis of wrought aluminum and aluminum alloy
GB/T 20066 Sampling and sample preparation methods for the determination of the chemical composition of steel and iron
GB/T 20878 Stainless steel and heat-resistant steel grades and chemical composition
GB/T 20975 (all parts) Chemical analysis methods for aluminum and aluminum alloys
3 Terms and definitions
The following terms and definitions apply to this document.
3.1
Cladlayer
In addition to aluminum and aluminum alloy substrates in aluminum-based composite wafers, other single-layer metals.
3.2
Cladratio
The metal thickness of the cladding layer (3.1) accounts for the percentage of the total thickness of the aluminum-based composite wafer (3.3).
3.3
A round sheet made of two or more metal materials (aluminum and aluminum alloy as the base) after rolling compound or explosive compound.
4 Product Classification
4.1 Brand, food contact layer, coating rate and size specifications
The composite wafer is divided into three types. multi-layer (steel/multi-layer aluminum/steel), three-layer (steel/aluminum/steel), and two-layer (steel/aluminum) according to the number of layers.
Contact layer, coverage rate and size specifications are shown in Table 1.The buyer's opinion on the number of layers, grades, food contact layer, coverage, size specifications, aluminum and aluminum alloy status
When there are special requirements, they shall be determined through negotiation between the supplier and the buyer and indicated in the order form (or contract).
4.2 Marking
The marking of the composite disc is based on the product name, the serial number of this document number, the brand, the state of aluminum and aluminum alloy, the food contact layer, and the size specification
The order is expressed.
Example.
The grade is 10Cr17/1050, the state of aluminum and aluminum alloy is O state, the food contact layer is 1050, the thickness is 2.50mm, and the diameter is 410.0mm.
Discs, marked as.
Composite disc GB/T 40391-10Cr17/1050-O-1050-2.50×ϕ410.0
5 requirements
5.1 Chemical composition
5.1.1 When the coating layer is Q195, its chemical composition should meet the requirements of GB/T 700; the coating layer is 10Cr17, 06Cr19Ni10,
When 022Cr18Ti, its chemical composition should meet the requirements of GB/T 20878.
5.1.2 The chemical composition of the aluminum base layer should meet the requirements of GB/T 3190.
5.4 Tensile mechanical properties at room temperature
The tensile mechanical properties at room temperature should meet the requirements of Table 6.
5.5 Peel strength between layers
The peel strength between layers should not be less than 15N/mm. When the buyer has special requirements, it shall be negotiated and determined by both the supplier and the buyer.
Same as indicated in).
5.6 Thermal cycle performance
No delamination and visible cracks are allowed.
5.7 Cupping performance
The cupping performance should meet the requirements of Table 7.
5.8 Appearance quality
5.8.1 The edges are allowed to have burrs that do not detach from being gently pressed down with the thumb. The deviation of the burrs should meet the requirements of Table 8.
5.8.2 The surface is not allowed to have defects such as cracks, bubbles, through-holes, and corrosion.
5.8.3 The surface of the non-food contact surface is allowed to have slight scratches, pitting and other defects that do not affect the use.
5.8.4 It is not allowed to peel off the coating and partially uncoated.
6 Test method
6.1 Chemical composition
6.1.1 The analysis method of the chemical composition of the coating is carried out according to the method specified in GB/T 223 (all parts).
6.1.2 The chemical composition analysis method of the aluminum base layer shall be carried out according to the method specified in GB/T 20975 (all parts) or GB/T 7999.Arbitration points
The analysis method should be carried out according to the method specified in GB/T 20975 (all parts). The "Al" content and the "total" value in "others" are in accordance with GB/T 3190
The prescribed method is calculated.
6.2 Dimensional deviation
6.2.1 Size rounding
The measurement value of the size is not allowed to be revised, and the method of determining the limit value should be carried out in accordance with the provisions of GB/T 8170.
6.2.2 Thickness
Use a micrometer with an accuracy of 0.01mm and above (or a measuring tool with the same accuracy) for measurement.
6.2.3 Diameter
Measure with a steel tape with an accuracy of 0.1mm or a tool with corresponding accuracy.
6.2.4 Unevenness
6.2.4.1 Total unevenness
Take the entire composite disc and measure its diameter with a tool with a resolution of 1mm. Then put it freely on the platform, press GB/T 3880.3
The wave height is measured with a feeler gauge with a resolution of 0.1mm, and the ratio of the wave height to the diameter is the total unevenness of the composite disc.
6.2.4.2 Local unevenness
For a composite disc with a diameter of not less than 300mm, take the entire composite disc and place it on the platform freely, according to GB/T 3880.3 regulations
Determine the method, use a tool with a resolution of 1mm to measure any chord length, and use a feeler gauge with a resolution of 0.1mm to measure the corresponding wave height.
The ratio of the chord length is the local unevenness of the composite disc.
6.3 Coverage rate
First measure the thickness of each layer according to the provisions of GB/T 3246.1, and then calculate the coating rate Fi according to formula (1), and the value is expressed in% (composite wafer
The cross-sectional schematic diagram is shown in Figure 1).
6.4 Tensile mechanical properties at room temperature
Carry out according to the method specified in GB/T 16865.
6.5 Peel strength between layers
Follow the method specified in Appendix A.
6.6 Thermal cycle performance
Place the composite disc in a 420℃±5℃ holding furnace for 60 minutes, then quickly transfer it to room temperature water and place it for 5 minutes, which is counted as 1
cycle. After repeating 100 cycles, visually observe the surface and interlayer of the composite disc.
6.7 Cupping performance
Carry out according to the method specified in GB/T 4156.
6.8 Appearance quality
The height of the burr uses an image-based coordinate surveying instrument. Visual inspection of other appearance quality.
7 Inspection rules
7.1 Inspection and acceptance
7.1.1 The product should be inspected by the supplier to ensure that the quality of the product meets the requirements of this document and the purchase order (or contract), and fill in the quality certificate
Ming book.
7.1.2 The purchaser shall inspect the products received in accordance with the provisions of this document. The results of the inspection and the provisions of this document and the purchase order (or contract)
In case of discrepancy, it shall be submitted to the supplier in written form, and the supplier and the demander shall negotiate and resolve it. Objections that belong to the appearance quality and size deviation should be received
If the objection to other properties is raised within one month from the date of the product, it should be raised within three months from the date of receipt of the product. If arbitration is required,
It shall be carried out by a unit recognized by both the supplier and the buyer, and samples will be taken on the buyer together.
7.2 Batch
Products should be submitted for acceptance in batches, and each batch should consist of products of the same grade, aluminum and aluminum alloy state, food contact layer, coverage rate, and size specifications.
composition. The weight of each batch is not limited.
7.3 Weight
The product should be checked and weighed.
7.4 Inspection items
7.4.1 Each batch of composite wafers shall be subject to chemical composition, dimensional deviation, coverage rate, tensile mechanical properties at room temperature, interlayer peeling strength, and cupping properties.
Capability and appearance quality inspection.
7.4.2 The cooling and heating cycle performance should be guaranteed by the supplier’s process. When the buyer requires the performance of the cooling and heating cycle to be tested, the inspection should be negotiated between the supplier and the buyer.
The frequency of inspection shall be indicated in the purchase order (or contract).
7.5 Sampling
Sampling should meet the requirements of Table 9.
7.6 Judgment of inspection results
7.6.1 When the chemical composition of any sample is unqualified, the batch of products shall be deemed unqualified.
7.6.2 When the dimensional deviation of any product is unqualified, the batch of products shall be deemed unqualified. Upon agreement between the supplier and the buyer, inspection is allowed piece by piece, qualified
delivery.
7.6.3 When the coverage rate of any sample is unqualified, when the product can distinguish the master tape, the master tape represented by the sample is judged to be unqualified, and the other master tapes are inspected once.
Inspection, qualified delivery. When the master tape cannot be distinguished, the batch of products shall be deemed unqualified.
7.6.4 When the tensile performance of any sample is unqualified, another double number of samples should be taken from the batch of products to repeat the test. Repeat the test
If all the results are qualified, the batch of products is deemed qualified. If there are still unqualified samples in the repeated test results, the batch of products shall be deemed unqualified.
7.6.5 When the interlayer peel strength of any sample is unqualified, another double number of samples should be taken from the batch of products to repeat the test. repeat
If the test results are all qualified, the batch of products is judged to be qualified. If there are still unqualified sample performances in the repeated test results, the batch of products shall be judged as unqualified.
qualified.
7.6.6 When the thermal cycle performance of any product is unqualified, another double number of samples should be taken from the batch of products for repeated testing. repeat
If the test results are all qualified, the batch of products is judged to be qualified. If there are still unqualified sample performances in the repeated test results, the batch of products shall be judged as unqualified.
qualified.
7.6.7 When the cupping performance of any sample is unqualified, another double number of samples should be taken from the batch of products to repeat the test. Repeat the test
If all the results are qualified, the batch of products is deemed qualified. If there are still unqualified samples in the repeated test results, the batch of products shall be deemed unqualified.
7.6.8 When the burr of any product is unqualified, the batch of products shall be deemed unqualified. Upon agreement between the supplier and the buyer, piece by piece inspection is allowed, and the qualified ones will be delivered.
If the other appearance quality of any product is unqualified, the product shall be judged as unqualified.
8 Marking, packaging, transportation, storage and quality certificate
8.1 Logo
8.1.1 Product mark
8.1.1.1 A mark (or label) shall be printed on the top wafer of the stack of wafers that have passed the inspection.
a) Product name;
b) Grade;
c) Aluminum and aluminum alloy status;
d) Coverage rate;
e) size specifications;
f) Product batch number;
g) Net weight;
h) The inspection and seal of the supplier's quality inspection department (or the signature or seal of the quality inspector).
8.1.1.2 The food contact layer of the composite disc shall be marked (such as scribed).
8.1.2 Packing box mark
The packaging box mark of the product should meet the requirements of GB/T 3199.
8.2 Packaging, transportation and storage
The composite disc is packaged without oil and paper. When the buyer requires oiling or paper padding, it shall be negotiated and determined by both the supplier and the buyer.
Same as indicated in). Other requirements are in accordance with GB/T 3199.
8.3 Quality certificate
E...