SU1283606A1 - Method of determining hardness of hardly accessible surfaces of parts after surface thermal hardening - Google Patents
Method of determining hardness of hardly accessible surfaces of parts after surface thermal hardening Download PDFInfo
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- SU1283606A1 SU1283606A1 SU853840892A SU3840892A SU1283606A1 SU 1283606 A1 SU1283606 A1 SU 1283606A1 SU 853840892 A SU853840892 A SU 853840892A SU 3840892 A SU3840892 A SU 3840892A SU 1283606 A1 SU1283606 A1 SU 1283606A1
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- hardness
- hard
- reach
- continuous linear
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- Investigating Or Analyzing Materials Using Thermal Means (AREA)
Abstract
Изобретение относитс к способам неразрушающего контрол поверхностей изделий и может быть использовано в машиностроении. Изобретение позвол ет повысить точность и достоверность определени твердости на труднодоступных поверхност х деталей машин после поверхностного термического упрочнени . На детали выбирают легкодоступную поверхность и принимают ее в качестве эталонной. Эталонную и труднодоступную поверхности термически упрочн ют при одинаковых режимах. Затем измер ют непрерывные линейные размеры в направлени х , перпендикул рных труднодоступной и эталонной поверхност м . Измер ют твердость эталонной поверхности, а о твердости труднодоступной поверхности суд т i по твердости эталонной поверхности и отношению измеренных соответствующих непрерывных размеров. i (ЛThis invention relates to methods for non-destructive testing of product surfaces and can be used in mechanical engineering. The invention makes it possible to increase the accuracy and reliability of the determination of hardness on hard-to-reach surfaces of machine parts after surface thermal hardening. On the parts choose an easily accessible surface and take it as a reference. The reference and hard-to-reach surfaces are thermally hardened under the same conditions. The continuous linear dimensions are then measured in directions perpendicular to the hard-to-reach and reference surfaces. The hardness of the reference surface is measured, and the hardness of the hard-to-reach surface is judged i by the hardness of the reference surface and the ratio of the measured corresponding continuous dimensions. i (L
Description
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Изобретение относитс к способам неразр тиающего контрол поверхносте изделий и может быть использовано в машиностроении при определении твердости на труднодоступных поверх ност х деталей после поверхностного термического упрочнени .The invention relates to methods for non-destructive testing of the surface of products and can be used in mechanical engineering in determining hardness on hard-to-reach surfaces of parts after surface thermal strengthening.
Целью изобретени вл етс повышение точности и достоверности определени твердости путем косвенного учета условий охлаждени термически упрочн емой поверхности издели .The aim of the invention is to improve the accuracy and reliability of hardness determination by indirectly taking into account the cooling conditions of the thermally hardened surface of the product.
Способ реализуетс следующим образом .The method is implemented as follows.
На исследуемой детали с труднодоступной поверхностью, твердость которой необходимо определить, выбирают легкодоступную поверхность и принимают ее в качестве эталонной, затем по одинаковым режимам труднодоступную и эталонную поверхности термически упрочн ют, измер ют непрерывные линейные размеры в напралени х , перпендикул рных эталонной и труднодоступным поверхност м, измер ют твердость эталонной поверхности , а твердость труднодоступной поверхности определ ют по формулеAn easily accessible surface is selected on the investigated part with a hard-to-reach surface, the hardness of which is taken and taken as a reference, then the hard-to-reach and reference surfaces are thermally strengthened by the same modes, measured in continuous linear dimensions in directions perpendicular to the reference and hard-to-reach surfaces , the hardness of the reference surface is measured, and the hardness of the hard-to-reach surface is determined by the formula
л рном эталонной поверхности; m - эмпирический коэффициент.l rnom reference surface; m is the empirical coefficient.
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU853840892A SU1283606A1 (en) | 1985-01-07 | 1985-01-07 | Method of determining hardness of hardly accessible surfaces of parts after surface thermal hardening |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU853840892A SU1283606A1 (en) | 1985-01-07 | 1985-01-07 | Method of determining hardness of hardly accessible surfaces of parts after surface thermal hardening |
Publications (1)
Publication Number | Publication Date |
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SU1283606A1 true SU1283606A1 (en) | 1987-01-15 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU853840892A SU1283606A1 (en) | 1985-01-07 | 1985-01-07 | Method of determining hardness of hardly accessible surfaces of parts after surface thermal hardening |
Country Status (1)
Country | Link |
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SU (1) | SU1283606A1 (en) |
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1985
- 1985-01-07 SU SU853840892A patent/SU1283606A1/en active
Non-Patent Citations (1)
Title |
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Торбило В.М. Алмазное выглаживание. М.: Машиностроение, 1972, с. 43. Рохлин А.г.Технологи производства судовых дизелей. Л.: Судостроение, 1968, с..155. * |
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