title>GB/T 4162-1991 Ultrasonic testing method for forged steel bars - GB/T 4162-1991 - Chinese standardNet - bzxz.net
Home > GB > GB/T 4162-1991 Ultrasonic testing method for forged steel bars
GB/T 4162-1991 Ultrasonic testing method for forged steel bars

Basic Information

Standard ID: GB/T 4162-1991

Standard Name: Ultrasonic testing method for forged steel bars

Chinese Name: 锻轧钢棒超声波检验方法

Standard category:National Standard (GB)

state:Abolished

Date of Release1991-12-13

Date of Implementation:1992-10-01

Date of Expiration:2008-11-01

standard classification number

Standard ICS number:Metallurgy>>Metal Material Testing>>77.040.20 Nondestructive Testing of Metal Materials

Standard Classification Number:Metallurgy>>Methods for testing physical and chemical properties of metals>>H26 Nondestructive testing methods for metals

associated standards

alternative situation:Replaced GB 4162-1984; replaced by GB/T 4162-2008

Publication information

publishing house:China Standards Press

Publication date:1992-10-01

other information

Release date:1984-02-24

Review date:2004-10-14

drafter:Wang Huaixiang, Ni Xiumei, Wang Yongling, Zhuang Fenglian, Weng Dianxue

Drafting unit:Shanghai No.5 Steel Plant and Fushun Steel Plant

Focal point unit:National Technical Committee on Steel Standardization

Proposing unit:Ministry of Metallurgical Industry of the People's Republic of China

Publishing department:State Bureau of Technical Supervision

competent authority:China Iron and Steel Association

Introduction to standards:

This standard specifies the instruments and equipment, test blocks, requirements for inspectors, inspection methods, inspection procedures, defect assessment, quality grades, and records and reports of inspection results for ultrasonic inspection of forged steel bars. GB/T 4162-1991 Ultrasonic inspection method for forged steel bars GB/T4162-1991 Standard download decompression password: www.bzxz.net

Some standard content:

National Standard of the People's Republic of China
Forged and rolled steel bars-Method forultrasonic examination
1 Subject content and scope of application
GB/T 4162--91Www.bzxZ.net
Generation GB4162--84
This standard specifies the instruments and equipment, test blocks, requirements for inspectors, inspection methods, inspection procedures, defect assessment, quality grades, and record and report of inspection results for ultrasonic inspection of forged and rolled steel bars. This standard is applicable to the inspection of forged and rolled steel bars with a diameter of 20 to 250 mm by ultrasonic pulse reflection method, and is also applicable to high-temperature alloy bars, but not to austenitic coarse-grained steel bars.
2 Reference standards
General technical conditions for ZBY230A pulse reflection ultrasonic flaw detector GB 9445
General rules for technical qualification appraisal of non-destructive testing personnel 3 Comparison test blocks
3.1 The comparison test blocks shall be made of materials with the same or similar acoustic properties as the inspected parts. 3.2 The materials used to make the comparison test blocks shall be carefully checked in advance by ultrasonic testing methods under high sensitivity conditions, and no echoes that affect the use shall exist.
3.3 The surface state, geometric shape and specifications of the comparison test blocks and the inspected parts shall be the same. 3.4 The diameter of the equivalent flat-bottom hole of the comparison test block shall be consistent with the equivalent flat-bottom hole diameter specified in Table 1. 3.4.1 The burial depth of the equivalent flat-bottom hole of the comparison test block used to adjust the sensitivity during longitudinal wave testing shall be 1/4, 1/2, or 3/4 of the diameter D of the inspected steel bar. As shown in Figure 1. For steel bars over 80mm, a flat bottom hole with a burial depth of 7/8 of the bar diameter (D) shall be added. Approved by the State Bureau of Technical Supervision on December 13, 1991 and implemented on October 1, 1992
GB/T 4162--91
Figure 1 Comparison test block (for longitudinal wave inspection)
3.4.2 During the longitudinal wave inspection, when the burial depth H of the equivalent flat bottom hole of the comparison test block used for evaluating defects is basically the same as the defect depth shown on the steel bar, the allowable error is:
When H≤6mm, it is ±1.6mm
6mm
Tip: This standard content only shows part of the intercepted content of the complete standard. If you need the complete standard, please go to the top to download the complete standard document for free.