GB/T 26052-2022 English PDF (GB/T26052-2022)

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GB/T 26052-2022: Tubular welding rods of tungsten carbide
GB/T 26052-2022
Tubular welding rods of tungsten carbide
ICS 77.160
CCSH72
National Standards of People's Republic of China
Replacing GB/T 26052-2010
Carbide Tubular Welding Rod
Released on 2022-07-11
2023-02-01 Implementation
State Administration for Market Regulation
Released by the National Standardization Management Committee
foreword
This document is in accordance with the provisions of GB/T 1.1-2020 "Guidelines for Standardization Work Part 1.Structure and Drafting Rules for Standardization Documents"
drafting.
This document replaces GB/T 26052-2010 "Cemented Carbide Tubular Welding Rod". Compared with GB/T 26052-2010, except for structural adjustment and
Apart from editorial changes, the main technical changes are as follows.
a) The scope of application has been changed (see Chapter 1, Chapter 1 of the.2010 edition);
b) Added normative references to GB/T 2967 (see Chapter 2, 5.2 and 6.1);
c) Added types of hard particles for tubular electrodes (see Chapter 4);
d) Changed the indication of grade (see Chapter 4, 3.1 of the.2010 edition);
e) Added the HTYZ grade (see Chapter 4);
f) Deleted "mechanical properties" (see 3.3 of the.2010 edition);
g) Changed the representation of hard particle size and particle size composition (see 5.3, 3.1 of the.2010 edition);
h) Tubular electrodes with a diameter of "6.0" and a length of "400, 500, 700" have been added (see 5.5);
i) The test method for the filling rate of electrodes has been changed (see 6.3, 4.3 of the.2010 edition);
j) The chemical composition, physical properties and structure of hard particles and the sampling quantity of hard particles have been changed (see 7.3,
5.3 of the.2010 edition);
k) The packaging method has been changed (see 8.2, 6.2 of the.2010 edition).
Please note that some contents of this document may refer to patents. The issuing agency of this document assumes no responsibility for identifying patents.
This document is proposed by China Nonferrous Metals Industry Association.
This document is under the jurisdiction of the National Nonferrous Metals Standardization Technical Committee (SAC/TC243).
This document is drafted by. Zigong Great Wall Surface Engineering Technology Co., Ltd., Luoyang Jinlu Cemented Carbide Tools Co., Ltd., Sinopec Jiangzuan
Petroleum Machinery Co., Ltd., Nonferrous Metal Technology and Economic Research Institute Co., Ltd., Suzhou Xinrui Alloy Tools Co., Ltd.
The main drafters of this document. Yu Wei, Li Yuxi, Shi Shunliang, He Xiangjian, Yang Yue, Zhang Guofeng, Quan Bing, Xu Lei, Mo Zixuan, Lu Qingzhong,
Xu Chunfang.
This document was first published in.2010, and this is the first revision.
Carbide Tubular Welding Rod
1 Scope
This document specifies the technical requirements, test methods, inspection rules, signs, packaging, transportation, storage, and accompanying documents for cemented carbide tubular electrodes.
parts and order form.
This document applies to hard alloy tubular electrodes (hereinafter referred to as electrodes) for surfacing or brazing of steel parts.
2 Normative references
The contents of the following documents constitute the essential provisions of this document through normative references in the text. Among them, dated references
For documents, 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 699 High Quality Carbon Structural Steel
GB/T 1480 Determination of particle size by dry sieving of metal powder
GB/T 2967 cast tungsten carbide powder
YS/T 412 carbide pellets
3 Terms and Definitions
This document does not have terms and definitions that need to be defined.
4 Product categories
Welding rods are divided into four grades according to the type of hard particles. HTYZ, HTYQ4, HTYQ6, and HTYQ7, see Table 1.
5 Technical Requirements
5.1 Material of the outer tube of the electrode
The material of the outer tube of the electrode should be 08 steel, and its technical requirements should meet the requirements of GB/T 699; if other materials of the outer tube of the electrode are required, the supplier can provide
It needs to be negotiated and determined by both parties.
5.2 Chemical composition, physical properties and structure of hard particles
The chemical composition, physical properties and structure of cast tungsten carbide in welding rods shall comply with the provisions of GB/T 2967.carbide pellets
The chemical composition, physical properties and organizational structure shall comply with the provisions of YS/T 412.
5.3 Hard particle size
The size and particle size composition of hard particles in the electrode should meet the requirements in Table 2.
5.4 Filling rate of electrodes
The electrode filling rate should not be less than 60.0%.
5.5 Dimensions and tolerances
The electrode size and allowable deviation shall comply with the provisions in Table 3.
5.6 Appearance quality
The appearance of the welding rod should be free of visible rust spots and burrs, and the pipe seams should be tight without powder leakage.
6 Test method
6.1 The determination of the chemical composition, physical properties and structure of cast tungsten carbide in welding rod shall be carried out according to the provisions of GB/T 2967; cemented carbide
The determination of the chemical composition, physical properties and organizational structure of the spherulites shall be carried out in accordance with the provisions of YS/T 412.
6.2 The determination of the size of hard particles in the electrode shall be carried out according to the provisions of GB/T 1480.
6.3 Determination of filling rate of welding rod. take 1 welding rod, pour out hard particles after weighing, weigh the mass of hard particles, and calculate the percentage of hard particles
The mass fraction of the electrode, this value is the filling rate of the electrode, and the value is accurate to 0.1%.
6.4 The electrode size and allowable deviation shall be measured with corresponding precision measuring tools.
6.5 Visual inspection is used for the appearance quality of welding rods.
7 inspection rules
7.1 Inspection and acceptance
7.1.1 The product should be inspected by the supplier or a third party to ensure that the product quality complies with the provisions of this document and the order form, and fill in the accompanying documents.
7.1.2 The buyer can inspect the received products according to the provisions of this document and the order form, if the inspection results are consistent with the provisions of this document and the order form
In case of discrepancy, it should be raised to the supplier within one month from the date of receipt of the product, and the supplier and the buyer should negotiate to resolve it. If arbitration is required, arbitration sampling is determined by supply and demand
The two parties work together on the demand side.
7.2 Batch formation
The products should be submitted for acceptance in batches. Each batch is composed of products with the same production process, the same brand, the same particle size, and the same size.
The quality is determined through negotiation between the supplier and the buyer.
7.3 Inspection items and sampling
The inspection items and sampling of the product shall comply with the regulations in the table
7.4 Judgment of test results
7.4.1 If any of the inspection results of the chemical composition, physical properties and organizational structure of hard particles fail, the unqualified product shall be included in the batch of products.
The qualified items shall be double-sampled for repeated inspection. If any item is still unqualified in the inspection results, the batch of products shall be judged as unqualified.
7.4.2 When the test result of hard particle size is unqualified, the unqualified item shall be doubled in this batch of products for repeated inspection.
If any item is still unqualified in the test results, the batch of products shall be judged as unqualified.
7.4.3 When the inspection result of the filling rate of the welding rod is unqualified, the unqualified item shall be doubled for repeated inspection in this batch of products.
If there is still any unqualified item in the result, the batch of products shall be judged as unqualified.
7.4.4 If the inspection result of the electrode size and allowable deviation is unqualified, the root electrode shall be judged as unqualified.
7.4.5 If the inspection result of the appearance quality of the welding rod is unqualified, the welding rod shall be judged as unqualified.
8 Marking, packaging, transportation, storage and accompanying documents
8.1 Logo
The following marks (or labels) should be placed on the product packaging.
a) name and address of the supplier;
b) product name and grade;
c) batch number;
d) net weight;
e) The document number.
8.2 Packaging
The product is packed in anti-rust paper (or kraft paper), put into a double-layer plastic bag or aluminum-plastic bag to vacuumize, and then put into a plastic box or a cardboard box.
The net weight of the box is generally 3kg~8kg, or it can be determined through negotiation between the supplier and the buyer.
8.3 Transportation
When the product is transported, it should be protected from moisture. During the handling process, it should be lightly loaded and unloaded, and violent collision and mechanical extrusion should be prevented.
8.4 Storage
The product should be stored in a dry, ventilated, cool and non-corrosive environment. The storage period should not exceed half a year.
8.5 Accompanying documents
Each batch of products shall be accompanied by accompanying documents, which shall include supplier information, product information, serial number of this document, date of manufacture or date of packaging
In addition, it should also include.
a) Product Quality Assurance Letter, the contents are as follows.
● The main performance and technical parameters of the product;
● Product characteristics (including characteristics of manufacturing process and raw materials);
● Responsibility for product quality;
● The quality certification obtained by the product and the various analysis and inspection results printed by the technical supervision department of the supplier;
b) Inspection reports during the product quality control process and finished product inspection reports;
c) Instructions for use of the product. correct handling, use, storage methods, etc.;
d) other.
9 Order Form Contents
An order form for the products listed in this document should include the following.
a) product name;
b) grade;
c) net weight;
d) the number of this document;
e) Other.