GB/T 35505-2017 PDF EnglishUS$150.00 · In stock · Download in 9 seconds
GB/T 35505-2017: Technical Specification for Sherardizing Coatings on Iron and Steel Articles Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid
Similar standardsGB/T 35505-2017: Technical Specification for Sherardizing Coatings on Iron and Steel Articles---This is an excerpt. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.), auto-downloaded/delivered in 9 seconds, can be purchased online: https://www.ChineseStandard.net/PDF.aspx/GBT35505-2017GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 25.220.99 A 29 Technical Specification for Sherardizing Coatings on Iron and Steel Articles Issued on: DECEMBER 29, 2017 Implemented on: JULY 1, 2018 Issued by. General Administration of Quality Supervision, Inspection and Quarantine; Standardization Administration Committee of the People’s Republic of China. Table of ContentsForeword ... 3 1 Scope ... 4 2 Normative References ... 4 3 Terms and Definitions ... 5 4 Technical Requirements ... 5 5 Quality Control and Assessment Methods ... 9 Appendix A (informative appendix)... 11 Technical Specification for Sherardizing Coatings on Iron and Steel Articles1 ScopeThis Standard specifies relevant terms, and technical requirements of quality control and assessment of sherardizing coatings anti-corrosion operation of iron and steel articles (hereinafter referred to as sherardizing operation). This Standard is applicable to surface sherardizing operation of carbon steel, low-alloy steel and cast-iron components, fasteners and structural parts. This Standard is not applicable to sherardizing operation of steel structural components that have precision requirements towards external dimension; steel structural components that bear soldered joints or organic material joints; steel structural components that need to be tempered at the temperature of 360 °C to satisfy the requirement of mechanical properties.2 Normative ReferencesThe following documents are indispensable to the application of this Standard. In terms of references with a specified date, only versions with a specified date are applicable to this Standard. The latest version (including all the modifications) of references without a specified date is also applicable to this Standard. GB/T 230.1 Metallic Materials - Rockwell Hardness Test - Part 1. Test Method (scales A, B, C, D, E, F, G, H, K, N, T) GB/T 4956 Non-magnetic Coatings on Magnetic Substrates - Measurement of Coating Thickness - Magnetic Method GB/T 6462 Metallic and Oxide Coatings - Measurement of Coating Thickness - Microscopical Method GB/T 6890 Zinc Powder GB/T 10125 Corrosion Tests in Artificial Atmospheres - Salt Spray Tests GB/T 13912-2002 Metallic Coatings - Hot Dip Galvanized Coatings on Fabricated Iron3 Terms and DefinitionsThe following terms and definitions are applicable to this document. 3.1 Sherardizing Sherardizing is an anti-corrosion method that forms a zinc-iron alloy coating on the surface by rotating and heating up steel structural components, zinc powder, additives and activators in a sealed container. 3.2 Sherardized Coatings Sherardized coating refers to a zinc-iron alloy coating that is formed on the surface of steel structural components because of the mutual diffusion of zinc and iron atoms. 3.3 Sherardized Articles Sherardized article refers to steel structural components that are processed through sherardizing throughout the process. 3.4 Colored Seal Colored seal refers to the process of sealing sherardized coating on sherardized pieces with a colored material. 3.5 Colorless Seal Colorless seal refers to the process of sealing sherardized coating on sherardized pieces with a colorless or transparent material. 3.6 Sherardized Anti-corrosion Coatings Sherardized anti-corrosion coating is a compound anti-corrosion coating that is formed after sealing the sherardized coating.4 Technical Requirements4.1 Thickness Level of Sherardized Coatings In accordance with the requirements of adopting steel structural components under different environments, sherardized coatings can be divided into several thickness levels. Thickness level of sherardized coatings shall comply with the stipulation in Table 1 below. or eliminate reddish brown spots that are generated because of premature iron atom precipitation in sherardized coatings in accelerated corrosion test or application. 4.5 Performance of Sherardized Coatings 4.5.1 Appearance 4.5.1.1 There shall be no dust, excessive spot, delamination or stripping on the surface of the sherardized coatings; the appearance colors shall be uniform; there shall be no obvious chromatic aberration. 4.5.1.2 After sherardizing, fasteners shall have distinct and clean screw threads that will not affect the normal operation. 4.5.1.3 When sherardized articles’ defects (such as sand hole and slag inclusion, etc.) lead to partial non-sherardized coatings after sherardizing, it shall not be deemed as quality defect. 4.5.2 Thickness 4.5.2.1 Thickness of the sherardized coatings shall comply with the stipulation in Table 1. 4.5.2.2 The sherardized coatings shall be uniform; thickness deviation of the sherardized coatings of the same sherardized article shall not be > 10% of the average thickness of the sherardized coatings. 4.5.3 Hardness In terms of high-strength structural components, such as spring and high-strength fasteners, hardness test of base metal shall be conducted after sherardized. The result shall not be < the hardness of base metal before sherardizing. 4.5.4 Corrosion resistance Neutral salt spray corrosion time of different thickness levels of sherardized coatings shall comply with the stipulation in Table 3 below. Table 3 -- The Lowest Time Requirement of Red Rust Emerging after Neutral Salt Spray Test Thickness Level Red Rust Emerging Time/h ......Source: Above contents are excerpted from the full-copy PDF -- translated/reviewed by: www.ChineseStandard.net / Wayne Zheng et al. Tips & Frequently Asked Questions:Question 1: How long will the true-PDF of English version of GB/T 35505-2017 be delivered?Answer: The full copy PDF of English version of GB/T 35505-2017 can be downloaded in 9 seconds, and it will also be emailed to you in 9 seconds (double mechanisms to ensure the delivery reliably), with PDF-invoice.Question 2: Can I share the purchased PDF of GB/T 35505-2017_English with my colleagues?Answer: Yes. The purchased PDF of GB/T 35505-2017_English will be deemed to be sold to your employer/organization who actually paid for it, including your colleagues and your employer's intranet.Question 3: Does the price include tax/VAT?Answer: Yes. Our tax invoice, downloaded/delivered in 9 seconds, includes all tax/VAT and complies with 100+ countries' tax regulations (tax exempted in 100+ countries) -- See Avoidance of Double Taxation Agreements (DTAs): List of DTAs signed between Singapore and 100+ countriesQuestion 4: Do you accept my currency other than USD?Answer: Yes. www.ChineseStandard.us -- GB/T 35505-2017 -- Click this link and select your country/currency to pay, the exact amount in your currency will be printed on the invoice. Full PDF will also be downloaded/emailed in 9 seconds.How to buy and download a true PDF of English version of GB/T 35505-2017?A step-by-step guide to download PDF of GB/T 35505-2017_EnglishStep 1: Visit website https://www.ChineseStandard.net (Pay in USD), or https://www.ChineseStandard.us (Pay in any currencies such as Euro, KRW, JPY, AUD).Step 2: Search keyword "GB/T 35505-2017". Step 3: Click "Add to Cart". If multiple PDFs are required, repeat steps 2 and 3 to add up to 12 PDFs to cart. Step 4: Select payment option (Via payment agents Stripe or PayPal). Step 5: Customize Tax Invoice -- Fill up your email etc. Step 6: Click "Checkout". Step 7: Make payment by credit card, PayPal, Google Pay etc. After the payment is completed and in 9 seconds, you will receive 2 emails attached with the purchased PDFs and PDF-invoice, respectively. Step 8: Optional -- Go to download PDF. Step 9: Optional -- Click Open/Download PDF to download PDFs and invoice. See screenshots for above steps: Steps 1~3 Steps 4~6 Step 7 Step 8 Step 9 |
