GB/T 16825.1-2022 PDF EnglishUS$320.00 · In stock · Download in 9 seconds
GB/T 16825.1-2022: Metallic materials - Calibration and verification of static uniaxial testing machines - Part 1: Tension/compression testing machines - Calibration and verification of the force-measuring system Delivery: 9 seconds. True-PDF full-copy in English & invoice will be downloaded + auto-delivered via email. See step-by-step procedure Status: Valid GB/T 16825.1: Historical versions
Similar standardsGB/T 16825.1-2022: Metallic materials - Calibration and verification of static uniaxial testing machines - Part 1: Tension/compression testing machines - Calibration and verification of the force-measuring system---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/GBT16825.1-2022 GB NATIONAL STANDARD OF THE PEOPLE’S REPUBLIC OF CHINA ICS 19.060; 77.040.10 CCS N 71 GB/T 16825.1-2022 / ISO 7500-1.2018 Replacing GB/T 16825.1-2008 Metallic materials - Calibration and verification of static uniaxial testing machines - Part 1.Tension/compression testing machines - Calibration and verification of the force- measuring system (ISO 7500-1.2018, IDT) Issued on. OCTOBER 12, 2022 Implemented on. MAY 01, 2023 Issued by. State Administration for Market Regulation; Standardization Administration of the PRC. Table of ContentsIntroduction... 5 1 Scope... 6 2 Normative references... 6 3 Terms and definitions... 7 4 Symbols... 7 5 General inspection of the testing machine... 9 6 Calibration of the force-measuring system of the testing machine... 9 6.1 General... 9 6.2 Determination of the resolution... 11 6.2.1 Analogue scale... 11 6.2.2 Digital scale... 11 6.2.3 Variation of readings... 11 6.2.4 Unit... 11 6.3 Determination of the relative resolution of the force indicator... 11 6.4 Calibration procedure... 12 6.4.1 Alignment of the force-proving instrument... 12 6.4.2 Temperature compensation... 12 6.4.3 Conditioning of the testing machine and force-proving instrument... 12 6.4.4 Calibration methods... 13 6.4.5 Application of forces... 13 6.4.6 Verification of accessories... 14 6.4.7 Verification of the effect of piston positions... 15 6.4.8 Determination of indication reversibility error... 15 6.5 Assessment of the force indicator... 16 6.5.1 Relative indication error... 16 6.5.2 Indication repeatability... 16 6.5.3 Agreement between two force-proving instruments... 17 7 Class of testing machine range... 17 8 Verification report... 18 8.1 General information... 18 8.2 Results of verification... 18 9 Intervals between verifications... 19 Annex A (Normative) General inspection of the testing machine... 20 Annex B (Informative) Inspection of the loading platens of the compression testing machines... 21 Annex C (Informative) Uncertainty of the calibration results of the force-measuring system... 22 Bibliography... 26ForewordThis document is drafted in accordance with GB/T 1.1-2020 "Directives for standardization - Part 1.Rules for the structure and drafting of standardizing documents". This document is Part 1 of GB/T 16825 "Metallic materials - Calibration and verification of static uniaxial testing machines". GB/T 16825 has issued the following parts. - Part 1.Tension/compression testing machines - Calibration and verification of the force-measuring system; - Part 2.Tension creep testing machines - Verification of the applied force. This document replaces GB/T 16825.1-2008 "Verification of static uniaxial testing machines - Part 1.Tension/compression testing machines - Verification and calibration of the force-measuring system". Compared with GB/T 16825.1-2008, in addition to structural adjustments and editorial changes, the main technical changes are as follows. - Change the scope of application of the document; add verification requirements for the performance properties of the testing machine to reach the specified class (see Clause 1; Clause 1 of the 2008 edition); - Add the term "Verification" (see 3.2); - Add definitions of symbols such as aF, aZ, bal, ΔF, Δm, Δg, E, E′, k, m, qi, qal, qmax, qmin (see Clause 4); - Change the representation method of the resolution of numerical indicator (see 6.2.2; 6.2.2 of the 2008 edition); - Change the determination method of relative resolution (see 6.3; 6.3 of the 2008 edition); - Change the relevant requirements for calibration methods (see 6.4.4; 6.4.4 of the 2008 edition); - Change the requirement for calibration below 20% of the measuring force range (see 6.4.5; 6.4.5 of the 2008 edition); - Change the requirements for relative indication error, relative repeatability error, and agreement between two force-proving instruments in the assessment of force indicator (see 6.5; 6.5 of the 2008 edition). This document is identical to ISO 7500-1.2018 "Metallic materials - Calibration and verification of static uniaxial testing machines - Part 1.Tension/compression testing machines - Calibration and verification of the force-measuring system". Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. The issuing authority of this document shall not be held responsible for identifying any or all such patent rights. This document was proposed by China Machinery Industry Federation. This document shall be under the jurisdiction of National Technical Committee 122 on Testing Machines of Standardization Administration of China (SAC/TC 122). Drafting organizations of this document. Sinotest Equipment Co., Ltd., Zhejiang Schlikor Test Instrument Manufacturing Co., Ltd., Jinan Xinguang Testing Machine Manufacturing Co., Ltd., MTS Systems (China) Co., Ltd., Shenzhen Wance Testing Machine Co., Ltd., Kunshan Innovation Testing Instruments Co., Ltd., Xi'an Letry Material Testing Technology Co., Ltd. Main drafters of this document. Ren Xia, Duan Zhuming, Wang Jianguo, Bai Shuang, Xiao Congyin, Zhong Xin, Tao Zecheng, Zhang Jianwei, Wang Xuefeng. The previous releases of this document and the documents it replaces are as follows. - It was first issued in 1997 as GB 16825-1997; first revised in 2002 as GB/T 16825.1-2002; second revised in 2008; - This is the third revision.1 ScopeThis document specifies the calibration and verification method of tension/compression testing machines.2 Normative referencesThe contents of the following documents, through normative references in this text, constitute indispensable provisions of this document. Among them, for dated references, only the edition corresponding to that date applies to this document. For undated references, the latest edition (including all amendments) applies to this document. ISO 376 Metallic materials - Calibration of force-proving instruments used for the verification of uniaxial testing machines3 Terms and definitionsFor the purposes of this document, the following terms and definitions apply. Confirmation, in accordance with the provisions of this document, that the performance properties of the testing machine achieve the limits given for a specified class.4 SymbolsThe following symbols and their meanings apply to this document (see Table 1).5 General inspection of the testing machineThe calibration of the testing machine shall only be carried out if the machine is in good working order. For this purpose, a general inspection of the machine shall be carried out before calibration of the force-measuring system of the machine as indicated in Annex A.6 Calibration of the force-measuring system of the testing machineThe thickness of the graduation marks on the scale shall be uniform and the width of the pointer shall be approximately equal to the width of a graduation mark. The resolution, r, shall be expressed in units of force.7 Class of testing machine rangeTable 2 gives the maximum permissible values for the different relative errors of the force-measuring system and for the relative resolution of the force indicator, which characterize a testing machine range in accordance with the appropriate class.8 Verification reportThe verification report shall contain at least the following information. The results of verification shall mention.9 Intervals between verificationsThe time between two verifications depends on the type of testing machine, the standard of maintenance and the amount of use. Unless otherwise specified, it is recommended that verification be carried out at intervals not exceeding 12 months. ......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 16825.1-2022 be delivered?Answer: The full copy PDF of English version of GB/T 16825.1-2022 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 16825.1-2022_English with my colleagues?Answer: Yes. 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