JJG 704-2005 English PDF

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JJG 704-2005: Verification Regulation of Callipers for Welding Inspection
Status: Valid

JJG 704: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 704-2005	499	Add to Cart	4 days	Verification Regulation of Callipers for Welding Inspection	Valid
JJG 704-1990	319	Add to Cart	3 days	Verification Regulation of Welding Measuring Rulers	Obsolete

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Basic data

Standard ID: JJG 704-2005 (JJG704-2005)
Description (Translated English): Verification Regulation of Callipers for Welding Inspection
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A52
Classification of International Standard: 17.040
Word Count Estimation: 19,132
Date of Issue: 2005-03-03
Date of Implementation: 2005-09-03
Older Standard (superseded by this standard): JJG 704-1990
Issuing agency(ies): State Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to welding inspection foot initial verification, testing and use of follow-up inspection.

JJG 704-2005: Verification Regulation of Callipers for Welding Inspection

---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.
Verification Regulation of Callipers for Welding Inspection National Metrology Verification Regulations of the People's Republic Welding inspection ruler Released on.2005-03-03 2005-09-03 implementation The General Administration of Quality Supervision, Inspection and Quarantine issued Replace JJG 704-1990 This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on March 3,.2005, and It will take effect on September 3,.2005. Focal Point. National Geometric Quantity Engineering Measurement Technology Committee Main drafting unit. Shaanxi Institute of Metrology and Testing Participated in drafting unit. Xi'an University of Architecture and Technology This regulation entrusts the National Geometric Quantity Engineering Parametric Measurement Technical Committee to explain The main drafters of this procedure. Wang Caixia (Shaanxi Institute of Metrology and Testing) Chang Qing (Shaanxi Institute of Metrology and Testing) Zhang Lei (Shaanxi Institute of Metrology and Testing) Participate in the drafters. Wang Pingan (Xi'an University of Architecture and Technology)

table of Contents

1 Scope (1) 2 Citations (1) 3 Overview (1) 4 Metrology performance requirements (1) 4.1 Height ruler, undercut depth gauge and multi-purpose ruler index line edge to the distance of the main ruler marking surface (1) 4.2 Difference between width and width of ruler mark (1) 4.3 Surface roughness of the measuring surface (1) 4.4 Flatness of the measuring surface (2) 4.5 Angle sample deviation and angle error of the square (3) 4.6 Indication error of linear scale on the edge of the ruler (3) 4.7 Zero-value error and indication error of height gauge (3) 4.8 Zero value error and indication error of undercut depth gauge (3) 4.9 Indication error of width ruler (3) 4.10 indication error of gap gauge (3) 5 General technical requirements (3) 6 measuring instrument control (3) 6.1 Verification conditions (3) 6.2 Verification project (4) 6.3 Verification method (5) 6.4 Processing of verification results (7) 6.5 verification period (7) Appendix A Technical Requirements for Dedicated Templates (8) Appendix B Evaluation of Uncertainty in Measurement Results of Undercut Depth Gauge Error (9) Appendix C Evaluation of Uncertainty in Measurement Results of Angle Gauge Error (12) Appendix D Verification certificate and verification result notice page format (14) Welding inspection rule verification procedure

1 Scope

This procedure applies to the first verification, subsequent verification and in-use inspection of the welding inspection rule.

2 Citations

This procedure refers to the following documents. JJF1001-1998 General measurement terms and definitions JJF1059-1999 Measurement Uncertainty Evaluation and Representation JJF1094-2002 Measuring instrument characteristic evaluation When using this procedure, care should be taken to use the current valid version of the above cited documents.

3 Overview

The welding inspection ruler uses the principle of line and cursor measurement to check the weld width, height and weld room of the welded part. Measuring instruments such as gap, groove angle, undercut depth, etc. The main structural forms are divided into type I (Fig. 1) and type II (Fig. 2). Type III (Figure 3) and Type IV (Figure 4). Figure 1 Welding test rule type I

4 Metrological performance requirements

4.1 Height gauge, undercut depth gauge and multi-purpose ruler index line edge to the distance of the main ruler marking surface Not more than 0.3mm. 4.2 Width and width difference of the ruler mark The width of the scale marking should be (0.15 ± 0.05) mm and the width difference is 0.05 mm. 4.3 Surface roughness of the measuring surface Not more than Ra 0.8 μm. ......

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