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GB/T 20567-2020: Vanadium-nitrogen
Status: Valid GB/T 20567: Evolution and historical versions
| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 20567-2020 | English | 119 |
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Vanadium-nitrogen
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GB/T 20567-2020
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| GB/T 20567-2006 | English | RFQ |
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Vanadium -- Nitrogen
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GB/T 20567-2006
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PDF similar to GB/T 20567-2020
Basic data | Standard ID | GB/T 20567-2020 (GB/T20567-2020) | | Description (Translated English) | Vanadium-nitrogen | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | H42 | | Classification of International Standard | 77.100 | | Word Count Estimation | 6,679 | | Date of Issue | 2020-04-28 | | Date of Implementation | 2020-08-01 | | Older Standard (superseded by this standard) | GB/T 20567-2006 | | Quoted Standard | GB/T 191; GB/T 24583.1; GB/T 24583.2; GB/T 24583.3; GB/T 24583.4; GB/T 24583.5; GB/T 24583.6; GB/T 24583.7; GB/T 24583.8 | | Issuing agency(ies) | State Administration for Market Regulation, China National Standardization Administration | | Summary | This standard specifies the technical requirements, test methods, inspection rules, packaging, marking, storage, transportation and quality certificates of vanadium-nitrogen alloys. This standard applies to vanadium-nitrogen alloys used in steelmaking and casting. | GB/T 20567-2020: Vanadium-nitrogen---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Vanadium-nitrogen
ICS 77.100
H42
National Standards of People's Republic of China
Replace GB/T 20567-2006
Vanadium Nitrogen Alloy
2020-04-28 released
2020-08-01 Implementation
State Administration for Market Regulation
Issued by the National Standardization Management Committee
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
This standard replaces GB/T 20567-2006 "Vanadium Nitrogen Alloy". Compared with GB/T 20567-2006, the main technical changes of this standard
as follows.
---The reference standard for chemical analysis methods of vanadium-nitrogen alloys has been added (see Chapter 2);
--- Include VN19 brand products into the standard (see 3.1);
---Modified the vanadium content requirements of VN12 and VN16 products (see 3.1, 3.1 in the.2006 edition);
---Modified the particle size requirements of the product (see 3.3, the.2006 edition of 3.3);
---Modified sampling and sample preparation methods (see 4.1, 4.2, 4.1 in.2006 edition);
---Modified the particle size determination method (see 4.5, 4.4 in the.2006 edition);
---Modified the batch requirements (see 5.1, 5.2 of the.2006 edition);
---Modified the packaging, marking, storage, transportation and quality certificate regulations (see Chapter 6, Chapter 6 of the.2006 edition).
This standard was proposed by the China Iron and Steel Association.
This standard is under the jurisdiction of the National Pig Iron and Ferroalloy Standardization Technical Committee (SAC/TC318).
Drafting organizations of this standard. Pangang Group Co., Ltd., Hegang Chengde Vanadium and Titanium New Materials Co., Ltd., Chengde Yanbei Metallurgical Materials Co., Ltd.,
National Vanadium and Titanium Products Quality Supervision and Inspection Center, China Metallurgical Construction Research Institute Co., Ltd., Metallurgical Industry Information Standards Institute.
The main drafters of this standard. Zhou Kaizhu, Li Xiufeng, Wang Yonggang, Li Lanjie, Wang Xueyuan, Peng Yicun, Huang Pingsheng, Bai Fengren, Liu Yajian,
Yang Xinneng, Fang Lin, Lu Mingliang, Huang Xiaoli, You Benyin, Lu Chunsheng.
The previous versions of the standard replaced by this standard are as follows.
---GB/T 20567-2006.
Vanadium Nitrogen Alloy
1 Scope
This standard specifies the technical requirements, test methods, inspection rules, packaging, marking, storage, transportation and quality certification of vanadium-nitrogen alloys
Books etc.
This standard applies to vanadium-nitrogen alloys used in steelmaking and casting.
2 Normative references
The following documents are indispensable for the application of this document. For dated reference documents, only the dated version applies to this article
Pieces. For undated references, the latest version (including all amendments) applies to this document.
GB/T 191 Packaging, Storage and Transportation Graphic Mark
GB/T 24583.1 Vanadium-nitrogen alloy-Determination of vanadium content-Ferrous ammonium sulfate titration method
GB/T 24583.2 Determination of nitrogen content of vanadium-nitrogen alloy inert gas fusion thermal conductivity method
GB/T 24583.3 Determination of nitrogen content of vanadium-nitrogen alloy Distillation-neutralization titration method
GB/T 24583.4 Determination of carbon content of vanadium-nitrogen alloy by infrared absorption method
GB/T 24583.5 Vanadium-nitrogen alloy-Determination of phosphorus content-Bismuth phosphorus molybdenum blue spectrophotometric method
GB/T 24583.6 Determination of sulfur content of vanadium-nitrogen alloy by infrared absorption method
GB/T 24583.7 Determination of oxygen content of vanadium-nitrogen alloy by infrared absorption method
GB/T 24583.8 Vanadium-nitrogen alloy determination of silicon, manganese, phosphorus, aluminum content inductively coupled plasma atomic emission spectrometry
3 Technical requirements
3.1 Brand and chemical composition
Vanadium-nitrogen alloy is divided into three grades VN12, VN16 and VN19 according to different chemical compositions, and its chemical composition should meet the requirements of Table 1.
Note. The supplier can provide the test results of oxygen, aluminum, silicon, and manganese content after negotiation between the supplier and the buyer and indicated in the contract.
3.2 Apparent density
The apparent density of VN12 and VN16 products should not be less than 3.0g/cm3, and the apparent density of VN19 products should not be small
In 2.6g/cm3.
3.3 Granularity
The particle size of the product should not be greater than 50mm, and the particle size of less than 10mm should not be greater than 5% of the total.
According to user requirements, after negotiation between the supplier and the buyer and indicated in the contract, vanadium-nitrogen alloys with other particle size requirements can also be supplied.
4 Test method
4.1 Sampling
4.1.1 Sampling in the packaging drum
Each batch randomly select 3 small bags of products in no less than 6 packaging drums, and randomly take 5 complete material balls in each bag, and all the materials taken
After being combined into a large sample, the samples required for chemical analysis are reduced and separated. Large sample size should not be less than 2500g, when the sample size is insufficient or the batch is less than 6 packages
When using the barrel, randomly take a sample from any packaging barrel to make up.
In addition, one small bag of product is randomly selected from the packaging barrel of each batch of chemical analysis samples, and all the samples taken are combined into a large sample and used as
Samples for particle size measurement.
4.1.2 Sampling in the bag
No less than 5 small bags of products are randomly selected from each packaging bag of each batch of products, and 15 complete balls are randomly selected in each bag.
The balls are all combined into a large sample and then the sample required for chemical analysis is reduced. The volume of the large sample should not be less than 2500g.
Take a sample from any packaging bag to make up.
In addition, no less than 1 small bag of product is randomly selected from each packaging bag of each batch of products, and all the samples taken are combined into a large sample as the particle size
Sample for measurement.
4.2 Sample preparation
The test sample preparation process is shown in Figure 1.
Figure 1 Sample preparation flow chart
4.3 Chemical analysis methods
4.3.1 The determination method of vanadium content is carried out in accordance with GB/T 24583.1.
4.3.2 The determination method of nitrogen content shall be carried out in accordance with GB/T 24583.2 or GB/T 24583.3.
4.3.3 The determination method of carbon content shall be carried out in accordance with the provisions of GB/T 24583.4.
4.3.4 The determination method of phosphorus content shall be carried out in accordance with GB/T 24583.5 or GB/T 24583.8.
4.3.5 The determination method of sulfur content shall be carried out in accordance with the provisions of GB/T 24583.6.
4.3.6 The oxygen content determination method shall be carried out in accordance with the provisions of GB/T 24583.7.
4.3.7 The determination method of aluminum, silicon and manganese content shall be carried out in accordance with the provisions of GB/T 24583.8.
4.4 Measuring method of apparent density
4.4.1 Take 5 complete vanadium-nitrogen alloy pellets and call their mass m (g).
4.4.2 Load a certain amount of analytically pure aluminum oxide fine powder with a particle size of 0.100mm~0.125mm in a volume of 500mL
Vibrate the cylinder until the volume does not change significantly, and record its volume V1 (cm3).
4.4.3 Pour the above fine aluminum oxide powder (see 4.4.2) out of the measuring cylinder, and then put five vanadium-nitrogen alloy pellets and these fine aluminum oxide powder
Put them into the measuring cylinder together, and ensure that the vanadium-nitrogen alloy material balls are all buried in the fine aluminum oxide powder. Tap until the volume does not change significantly as
Stop, write down the volume V2 (cm3) at this time.
4.4.4 Calculate the apparent density of vanadium-nitrogen alloy ρ(g/cm3) according to formula (1).
4.5 Determination of particle size
The measurement method of particle size adopts manual sieving method.
5 Inspection rules
5.1 Vanadium-nitrogen alloys should be inspected and delivered in batches. Each batch consists of products of the same brand, and the mass of each batch should not exceed 3000kg.
5.2 When the inspection results do not meet the requirements, double samples can be taken from the same batch of products for re-inspection. If the re-inspection result still does not meet the requirements, it is judged
This batch of products is unqualified.
6 Packaging, marking, storage, transportation and quality certificate
6.1 Packaging
The product is packed in a moisture-proof bag, 5kg or 10kg per bag; then put the product in the moisture-proof bag into a packaging barrel or packaging bag and package it.
50kg or 100kg per barrel when packed, and 1000kg per bag when packed in bags. The moisture-proof bag is required to be complete and undamaged, and the packaging bag and packaging barrel are both
Should be tightly sealed.
Other packaging methods can also be used according to the contract.
6.2 Logo
The product name and net content should be marked on the inner packaging of the moisture-proof bag. The outer packaging of the product should be marked with the name and address of the manufacturer, product name and
Brand number, product standard number, production date, batch number, net content (for quantitative delivery), etc.
The packaging, storage and transportation pictorial signs should meet the requirements of GB/T 191.
6.3 Storage
Products should be stored in a ventilated, dry, non-corrosive gas environment warehouse.
6.4 Transportation
During transportation, the product should be packed and handled carefully, and no heavy pressure and violent collisions should be allowed to avoid damage and deformation of the product packaging.
6.5 Quality Certificate
Each batch of products that leave the factory should be accompanied by a quality certificate. The content of the certificate includes. the name and address of the manufacturer, the name and brand of the product, and the product
Standard number, contract number, batch number, batch size (number of pieces and total quality) and product quality inspection results.
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