1 Scope
This document specifies the product classification, technical requirements, test methods, inspection rules, marking, packaging, transport, storage, accompanying documentation and order form contents of high purity nickel.
This document applies to electrolytic or electrowinning high purity nickel for sputtering targets and ion coating, wire for the electronics industry, high purity reagents, high performance alloys and other applications.
2 Normative references
The contents of the following documents constitute essential provisions of this document through normative references in the text. Among them, the date of the reference documents, only the date of the corresponding version applies to this document; do not note the date of the reference documents, the latest version (including all change orders) applies to this document.
GB/T 8170 Value modification rules and the expression and determination of limit values
YS/T 1012 Method for the chemical analysis of high purity nickel ﹑ Determination of the content of impurity elements by glow discharge mass spectrometry
3 Terminology and definitions
There are no terms and definitions to be defined in this document.
4 Product classification
High purity nickel is divided into two grades according to nickel content: HPNi-6N, HPNi-5N.
5 Technical requirements
5.1 Chemical composition
The chemical composition requirements for high purity nickel should be in accordance with Table 1.
5.2 Specifications and dimensions
High purity nickel shall be in the form of strips or blocks, the specific size shall be determined according to the requirements of the demander.
5.3 Appearance quality
5.3.1 High purity nickel shall have a metallic lustre, a clean and tidy surface, free from oil and adhesion and free from penetrating porosity.
5.3.2 The raised surface area of high purity nickel shall not exceed 3 mm x 3 mm, the height beyond the surface shall not be greater than 3 mm, and the raised surface shall not exceed 3 per square centimetre.
5.3.3 The colour of the same batch of products shall be consistent.
5.4 Other requirements
If the demander has special requirements on the chemical composition and physical specifications of high purity nickel, they can be negotiated by both the supplier and the demander and stated in the order form.
6 Test methods
6.1 The determination of the impurity element content of high purity nickel is carried out in accordance with YS/T 1012.
6.2 The dimensions of high purity nickel are measured using the corresponding precision gauges.
6.3 The appearance quality is measured by visual inspection and the surface protrusions are measured by the corresponding precision gauges.
7 Inspection rules
7.1 Inspection and acceptance
7.1.1 The product shall be inspected by the supplier or a third party to ensure that the product conforms to the provisions of this document or the order form.
7.1.2 The supplier may inspect the products received. If the test results are not in accordance with the provisions of this document or the order form, they shall be submitted to the supplier within 15 days from the date of receipt of the products and shall be resolved by mutual agreement between the supplier and the demander; if arbitration is required, samples shall be taken by mutual agreement for arbitration and shall be carried out jointly by the supplier and the demander.
7.2 Grouping of batches
Each batch shall be composed of products of the same grade produced by the same system and the same production cycle.
7.3 Inspection items
Each batch shall be inspected for chemical composition, dimensions and appearance quality.
7.4 Sampling and preparation of samples
7.4.1 Samples for chemical composition analysis: not less than two samples shall be cut at random from the product using shearing equipment. A sample is placed in the ratio of V (nitric acid); V (deionized water) = 1:1 nitric acid solution (nitric acid purity requirements of analytical purity above) soaked in 1 min ~ 2 min, and then fully washed with deionized water to remove surface dirt and residual acid and dry to prevent oxidation, vacuum packaging with aluminum plastic bags for testing institutions for chemical composition analysis. The rest of the sample is kept as a secondary sample for arbitration or other needs.
7.4.2 The external quality and dimensions shall be inspected piece by piece.
7.5 Determination of test results
7.5.1 The analysis results shall be modified in accordance with the provisions of GB/T 8170, and the modified value comparison method shall be used for determination. 7.5.2 If the results of the chemical composition analysis do not conform to the provisions of this document and the order form, the batch shall be judged to be unqualified. 7.5.3 If the appearance quality and dimensions do not conform to the provisions of this document or the order form, the batch shall be judged to be unqualified. 7.5.4 If the chemical composition analysis does not conform to the provisions of this document and the order form, the batch shall be judged to be unqualified.
8 signs, packaging, transport, storage and accompanying documents
8.1 Marking
The outer packaging of high purity nickel shall be printed with the product name, trademark, name of the supplier. Address of the supplier, batch number, net weight, and "moisture-proof", "careful and light" words or signs.
8.2 Packaging, transport and storage
8.2.1 High purity nickel is packed in cushioning material and then vacuum sealed in aluminium-plastic bags, and the outer packing is in cartons or wooden boxes.
8.2.2 During transportation, high purity nickel should be protected from collision, falling from height, rain and contact with various reagents, and the packaging should be complete.
8.2.3 High purity nickel should be stored in a dry, ventilated warehouse without corrosive gases and should not be stored together with acids, alkalis, oils and chemicals.
8.3 Accompanying documentation
Each batch of high purity nickel should be accompanied by documentation, which should include, in addition to information on the supplier, product information, the document number, the date of delivery or the date of packaging, and should also include the following.
a) Product quality guarantee:
The main performance and technical parameters of the product; product characteristics
Responsibility for the quality of the product
Quality certification of the product and the supplier's technical supervision department to check the results of the analysis of the test.
(b) Certificate of conformity:
Inspection items and their results or conclusions; batch or lot numbers;
Date of inspection;
Signature or seal of the inspector.
c) Inspection report of the product quality control process and finished product inspection report.
d) Product use instructions: correct handling, use, storage methods, etc.
e) Others.
9 Order form content
According to their own needs, the parties required to order the products listed in this document in the order form, list the following content:
a) Product name;
b) Grade;
c) Chemical composition and physical specifications (shape, size, surface protrusions, etc.) of special requirements;
d) Net weight and number of pieces.
e) Number of this document
f) Other.
1 Scope
2 Normative references
3 Terminology and definitions
4 Product classification
5 Technical requirements
6 Test methods
7 Inspection rules
8 signs, packaging, transport, storage and accompanying documents
9 Order form content
