RU2014133090A - METHOD FOR DETERMINING METAL HARDNESS ON AN EXISTING PIPELINE BY SHOCK-DYNAMIC INSTRUMENT - Google Patents
METHOD FOR DETERMINING METAL HARDNESS ON AN EXISTING PIPELINE BY SHOCK-DYNAMIC INSTRUMENT Download PDFInfo
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- RU2014133090A RU2014133090A RU2014133090A RU2014133090A RU2014133090A RU 2014133090 A RU2014133090 A RU 2014133090A RU 2014133090 A RU2014133090 A RU 2014133090A RU 2014133090 A RU2014133090 A RU 2014133090A RU 2014133090 A RU2014133090 A RU 2014133090A
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- hardness
- measured
- existing pipeline
- pipeline
- segment
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- Length Measuring Devices With Unspecified Measuring Means (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Abstract
1. Способ определения твердости металла на действующем трубопроводе ударнодинамическим прибором, характеризующийся тем, что при нанесении удара по боковой поверхности трубопровода результат измерения увеличивают на величину поправки, которую определяют путем произведения относительной разности величин информативных параметров, измеренных на отрезке образцовой трубы такого же типоразмера при нанесении ударов в торец отрезка и по его боковой поверхности, на фактическую твердость трубопровода, измеренную на его боковой поверхности, деленного на информативный параметр твердости от удара в торец отрезка, с соблюдением условия одного направления продольной оси прибора, для всех случаев использования прибора на действующем трубопроводе и на отрезке образцовой трубы, при этом измерения пересчитывают в значения статической твердости по Бринеллю в соответствии с таблицами из комплекта прибора.2. Способ по п. 1, отличающийся тем, что величину поправки вычисляют по зависимости:ΔF=НВ(НВ-НВ)/НВ, гдеНВ- значение твердости, измеренное на боковой поверхности действующего трубопровода;НВ- значение твердости, измеренное на торце отрезка образцовой трубы;НВ- значение твердости, измеренное на боковой поверхности отрезка образцовой трубы.3. Способ по п. 1, отличающийся тем, что измерения твердости проводят на действующем трубопроводе с толщиной стенки трубы более 3 мм.1. A method for determining the hardness of a metal on an existing pipeline with a shock-dynamic device, characterized in that when striking along the side surface of the pipeline, the measurement result is increased by the correction value, which is determined by the product of the relative difference between the values of the informative parameters measured on the length of the reference pipe of the same size when applying impacts on the end of the segment and on its lateral surface, on the actual hardness of the pipeline, measured on its lateral surface, d for the informative parameter of the hardness from impact at the end of the segment, subject to the condition of one direction of the longitudinal axis of the device, for all cases of using the device on the existing pipeline and on the length of the reference pipe, the measurements are converted to the values of static Brinell hardness in accordance with the tables from the kit appliance. 2. The method according to claim 1, characterized in that the correction value is calculated according to: ΔF = HB (HB-HB) / HB, where HB is the hardness value measured on the lateral surface of the existing pipeline; HB is the hardness value measured at the end of the sample pipe ; HB is the value of hardness measured on the lateral surface of a segment of a reference pipe. 3. The method according to claim 1, characterized in that the hardness measurements are carried out on an existing pipeline with a pipe wall thickness of more than 3 mm.
Claims (3)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
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RU2014133090/28A RU2604965C2 (en) | 2014-08-13 | 2014-08-13 | Method to detect metal hardness on operating pipeline by impact-dynamic device |
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RU2014133090/28A RU2604965C2 (en) | 2014-08-13 | 2014-08-13 | Method to detect metal hardness on operating pipeline by impact-dynamic device |
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RU2014133090A true RU2014133090A (en) | 2016-03-10 |
RU2604965C2 RU2604965C2 (en) | 2016-12-20 |
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RU2014133090/28A RU2604965C2 (en) | 2014-08-13 | 2014-08-13 | Method to detect metal hardness on operating pipeline by impact-dynamic device |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111999193A (en) * | 2020-09-04 | 2020-11-27 | 广州特种承压设备检测研究院 | Hardness testing method |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
RU2706106C1 (en) * | 2019-04-17 | 2019-11-13 | Акционерное общество "Научно-производственное предприятие "Дельта" | Method of determining service life of steel articles |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4635471A (en) * | 1986-01-16 | 1987-01-13 | Energy Development Corporation | Hardness testing device for pipes |
RU2315280C1 (en) * | 2006-06-30 | 2008-01-20 | Закрытое акционерное общество "Прочность" | Mode of definition of the firmness of the material in the point of working surface of a whole metallic article |
RU2435154C1 (en) * | 2010-07-15 | 2011-11-27 | Государственное образовательное учреждение высшего профессионального образования "Санкт-Петербургский Государственный политехнический университет" (ГОУ "СПбГПУ") | Procedure for determination of material hardness |
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2014
- 2014-08-13 RU RU2014133090/28A patent/RU2604965C2/en not_active IP Right Cessation
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111999193A (en) * | 2020-09-04 | 2020-11-27 | 广州特种承压设备检测研究院 | Hardness testing method |
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RU2604965C2 (en) | 2016-12-20 |
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Effective date: 20170322 |