SU717611A1 - Method of determining the resistance of weld seam to hot crack formation - Google Patents
Method of determining the resistance of weld seam to hot crack formation Download PDFInfo
- Publication number
- SU717611A1 SU717611A1 SU772561432A SU2561432A SU717611A1 SU 717611 A1 SU717611 A1 SU 717611A1 SU 772561432 A SU772561432 A SU 772561432A SU 2561432 A SU2561432 A SU 2561432A SU 717611 A1 SU717611 A1 SU 717611A1
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- SU
- USSR - Soviet Union
- Prior art keywords
- resistance
- cracks
- determining
- sample
- weld metal
- Prior art date
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- Sampling And Sample Adjustment (AREA)
Description
1one
Изобретение относитс к испытани м материалов на прочность, а именно, к способам определени сопротивлени металла сварного шва образованию гор чих трещин.The invention relates to strength testing of materials, namely, to methods for determining the resistance of a weld metal to the formation of hot cracks.
Известен способ определени сопротивлени металла сварного шва образованию гор чих треш;ин, заключающийс в том, что образец нагружают, одновременно нанос т на него дуговой сваркой сварной шов и фиксируют наличие трещин в металле шва 1.There is a known method for determining the weld metal of the formation of hot trash, which means that the sample is loaded, simultaneously welded to the sample by arc welding and the presence of cracks in the weld metal 1 is recorded.
Этот способ вл етс наиболее близким к изобретению по технической сущности и достигаемому результату.This method is closest to the invention in its technical essence and the achieved result.
Однако этот способ трудоемок, так как требуетс большое количество испытуемых образцов дл фиксации скорости деформировани , при которой образуетс трещина.However, this method is laborious as it requires a large number of test specimens to fix the rate of deformation at which a crack is formed.
Целью изобретени вл етс сокращение трудоемкости способа.The aim of the invention is to reduce the complexity of the method.
Это достигаетс тем, что образец нагружают , возбужда в нем вынужденные колебани различной амплитуды с частотой 20-25 Гц, а в качестве критери оценки сопротивлени металла сварного щва образованию гор чих трещин принимают амплитуду колебаний, ниже которой трещины отсутствуют .This is achieved by the fact that the sample is loaded, stimulating in it the forced oscillations of various amplitudes with a frequency of 20–25 Hz, and as a criterion for evaluating the resistance of the weld metal to the formation of hot cracks take the amplitude of oscillations, below which there are no cracks.
Способ осуществл ют следующим образом .The method is carried out as follows.
Образец, состо щий, например, из двух свариваемых частей, нагружают, возбужда в нем вынужденные колебани заданной амп лйтуды с частотой, лежащей в пределах 20-25 Гц. При этом в образце возникает напр жение изгиба или раст жени -сжати .A sample consisting, for example, of two parts to be welded, is loaded, exciting in it the forced oscillations of a given amplitude of light at a frequency lying in the range of 20-25 Hz. In this case, a bending or tension-compression stress arises in the sample.
Нанос т на образец сварной шов и фиксируют наличие трещин в сварном шве. Если амплитуда колебаний ниже критической, то трещины в металле сварного шва отсутствуют , если больше, то образец разрушаетс , так как микротрещина в этих услови х распростран етс на все сечение шва и разрушает его.Apply a weld onto the sample and record the presence of cracks in the weld. If the oscillation amplitude is lower than the critical one, then there are no cracks in the weld metal, if it is larger, the specimen is destroyed, since the microcrack under these conditions spreads over the entire cross section of the weld and destroys it.
Далее испытывают следующий образец с другой амплитудой колебаний и так до тех пор, пока не образуетс така амплитуда колебаний , при амплитудах ниже которой трещины отсутствуют, а выще - образец разрушаетс .The next sample is then tested with a different amplitude of oscillation and so on until such an amplitude of oscillation is formed, with amplitudes below which there are no cracks, and higher - the sample is destroyed.
По этой амплитуде суд т-о сопротивлении металла сварного шва образованию гор чих трещии.For this amplitude, the court is about the resistance of the weld metal to the formation of hot cracks.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772561432A SU717611A1 (en) | 1977-12-28 | 1977-12-28 | Method of determining the resistance of weld seam to hot crack formation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU772561432A SU717611A1 (en) | 1977-12-28 | 1977-12-28 | Method of determining the resistance of weld seam to hot crack formation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU717611A1 true SU717611A1 (en) | 1980-02-25 |
Family
ID=20740838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU772561432A SU717611A1 (en) | 1977-12-28 | 1977-12-28 | Method of determining the resistance of weld seam to hot crack formation |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU717611A1 (en) |
-
1977
- 1977-12-28 SU SU772561432A patent/SU717611A1/en active
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