SU1401345A1 - Method of determining maximum hardness of materials - Google Patents
Method of determining maximum hardness of materials Download PDFInfo
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- SU1401345A1 SU1401345A1 SU864102861A SU4102861A SU1401345A1 SU 1401345 A1 SU1401345 A1 SU 1401345A1 SU 864102861 A SU864102861 A SU 864102861A SU 4102861 A SU4102861 A SU 4102861A SU 1401345 A1 SU1401345 A1 SU 1401345A1
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- SU
- USSR - Soviet Union
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- hardness
- indentation
- materials
- maximum hardness
- determining
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
Изобретение относитс к испытани м материалов, а именно к определению твердости. Целью изобретени вл етс повышение точности определени максимальной твердости за счет определени минимальной степени деформации материала при вдавливании, В испытуемый материал вдавливают ин- дентор, обеспечива его углы вдавливани от 90 до 160°, стро т зависимости твердости от угла вдавливани и площади отпечатка от угла вдавливани и по минимальной степени деформации определ ют максимальную твердость . 2 ил.The invention relates to the testing of materials, namely the determination of hardness. The aim of the invention is to improve the accuracy of determining the maximum hardness by determining the minimum degree of material deformation during indentation. The indenter is pressed into test material, ensuring its indentation angles from 90 to 160 °, build hardness versus indentation angle and imprint area from the indentation angle and the minimum degree of deformation determine the maximum hardness. 2 Il.
Description
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Изобретение относитс к испытани м 1|1атериалов, а именно к определению твердости.The invention relates to the testing of 1 | 1 materials, namely the determination of hardness.
Целью изобретени вл етс повы- 1|аение точности определени максималь- йой твердости за счет определени шнимальной степени деформации материала при вдавливании. The aim of the invention is to improve the accuracy of determining the maximum hardness by determining the maximum degree of deformation of the material during indentation.
На фиг,1 и 2 показаны графики за- зисимости твердости и площади отпе- jaTKa от углов вдавливани инденто- зов.Figures 1 and 2 show the graphs of the hardness and area of the dents jaTKa versus indentation indentation angles.
Способ осуществл етс следующим эбразомоThe method is carried out as follows.
В испытуемый материал вдавливдлот под посто нной нагрузкой индентор в виде конуса, пирамиды шараэ обеспечива изменени углов его вдавлива- зи от 90 до 60°, до образовани этпечатков с различной степенью пластической деформации в зависимости от углов вдавливани . После сн ти на- рузки измер ют площадь отпечатковInto the test material, the indentor under a constant load is an indenter in the form of a cone, a sharae pyramid, providing for the change of its indentation angle from 90 to 60 °, before the formation of etched imprints with different degrees of plastic deformation depending on the indentation angles. After removal, the area of the prints is measured.
и по ним определ ют твердость материала И. Стро т зависимость степенб деформации (угол вдавливани ) твердость и степень-деформации (угол вдавливани ) - площадь отпечатка,, устанавливают на последней мин1-шальand the hardness of the material is determined from them. The dependence of the degree of deformation (indentation angle), the hardness and the degree of deformation (indentation angle) —the imprint area, is established on the last min1-shawl
ную площадь S, котора соответствует максимальной твердости Н. На фиг„1 приведены зависимости изменени площади контакта и твердости Н от угла вдавливани конуса tf дл стали 20 соответственно без учета сил трени (1 и З) и с учетом сил трени (2 и 4)о На фиг,2 приведены зависимости площади контакта S от угла вдавливани ., ц конуса дл ста- 1Ш 45 с различной твердостью по Брин- нелю оThe nominal area S, which corresponds to the maximum hardness H. Fig. 1 shows the dependences of the change in contact area and hardness H on the indentation angle tf of steel tf 20, respectively, without taking into account friction forces (1 and 3) and taking into account friction forces (2 and 4) o FIG. 2 shows the dependences of the contact area S on the indentation angle. of a cone for steel-1 × 45 with different Brynnell hardness.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU864102861A SU1401345A1 (en) | 1986-08-04 | 1986-08-04 | Method of determining maximum hardness of materials |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU864102861A SU1401345A1 (en) | 1986-08-04 | 1986-08-04 | Method of determining maximum hardness of materials |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU1401345A1 true SU1401345A1 (en) | 1988-06-07 |
Family
ID=21251022
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU864102861A SU1401345A1 (en) | 1986-08-04 | 1986-08-04 | Method of determining maximum hardness of materials |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU1401345A1 (en) |
-
1986
- 1986-08-04 SU SU864102861A patent/SU1401345A1/en active
Non-Patent Citations (1)
| Title |
|---|
| Авторское свидетельство СССР № 365622, кл. G 01 N 3/40, 1973. Авторское свидетельство СССР № 181363, кл. G 01 N 3/40, 1966, * |
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