SE7512411L - SET AND DEVICE FOR HARDNESS TESTING OF MATERIAL - Google Patents
SET AND DEVICE FOR HARDNESS TESTING OF MATERIALInfo
- Publication number
- SE7512411L SE7512411L SE7512411A SE7512411A SE7512411L SE 7512411 L SE7512411 L SE 7512411L SE 7512411 A SE7512411 A SE 7512411A SE 7512411 A SE7512411 A SE 7512411A SE 7512411 L SE7512411 L SE 7512411L
- Authority
- SE
- Sweden
- Prior art keywords
- impact
- mass
- test
- velocities
- maximum
- Prior art date
Links
- 239000000463 material Substances 0.000 title abstract 5
- 238000007542 hardness measurement Methods 0.000 title 1
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 0.000 abstract 1
- 230000000717 retained effect Effects 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/40—Investigating hardness or rebound hardness
- G01N3/48—Investigating hardness or rebound hardness by performing impressions under impulsive load by indentors, e.g. falling ball
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0076—Hardness, compressibility or resistance to crushing
- G01N2203/0083—Rebound strike or reflected energy
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
1485218 Measuring hardness PROCEQ SA 31 Oct 1975 [7 Nov 1974.] 45554/75 Headings G1N and G1S The hardness characteristic of a material is determined by causing a test tip to be impacted with the surface of the test material and calculating the ration of the test tip velocities immediately before and after impact. As shown, Fig. 1, a test tip 1 consisting of a hard steel ball embedded in an impact mass 2 is initially drawn back from the test material 15 by virtue of the mechanical coupling between the resilient bottom portion 8 of a rod 7 and an upper bore 2a of the mass 2. The portion 8 has four longitudinal slots 8b, so that by pressing down the upper ports 10, 11 of the assembly shown the rod 7 enters and is retained in the bore 2a. The upper parts 10, 11 are then withdrawn by a spring 12 until the coneshaped upper part 9a of the portion 8 abuts against an end-face 6a of a bushing 6. This squeezes the end of portion 8 and the impact mass 2 is released to be forced by spring 5 on to the surface 15 of the test material. The mass 2 carries a permanent magnet 3 which co-operates with a coil 14 externally located at the bottom of the housing 4 to produce an output voltage which has a positive maximum just before impact and a negative maximum just after impact, these voltages being proportional to the corresponding velocities of the impact mass 2. In another embodiment the test tip is separated from the impact mass, and the maximum velocities of either are measured.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2452880A DE2452880C2 (en) | 1974-11-07 | 1974-11-07 | Method and device for hardness testing of workpieces |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| SE7512411L true SE7512411L (en) | 1976-05-10 |
| SE418421B SE418421B (en) | 1981-05-25 |
Family
ID=5930284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SE7512411A SE418421B (en) | 1974-11-07 | 1975-11-05 | SET OF HARDNESS TEST OF MATERIAL AND DEVICE FOR IMPLEMENTATION OF THE SET |
Country Status (20)
| Country | Link |
|---|---|
| JP (1) | JPH0120370B2 (en) |
| AT (1) | AT371254B (en) |
| AU (1) | AU504400B2 (en) |
| BE (1) | BE835263A (en) |
| BR (1) | BR7507334A (en) |
| CA (1) | CA1050784A (en) |
| CH (1) | CH596550A5 (en) |
| CS (1) | CS222221B2 (en) |
| DD (1) | DD121184A5 (en) |
| DE (1) | DE2452880C2 (en) |
| DK (1) | DK152311C (en) |
| ES (1) | ES457368A1 (en) |
| FR (1) | FR2290660A1 (en) |
| GB (1) | GB1485218A (en) |
| IN (1) | IN145128B (en) |
| IT (1) | IT1053136B (en) |
| NL (1) | NL188961C (en) |
| SE (1) | SE418421B (en) |
| SU (1) | SU971119A3 (en) |
| ZA (1) | ZA756981B (en) |
Families Citing this family (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0731106B2 (en) * | 1985-11-26 | 1995-04-10 | 雅勇 中村 | Impact hardness test method and impact hardness tester used therefor |
| US5591902A (en) * | 1990-12-12 | 1997-01-07 | Castagner; Bernard | Dynamic pyrotechnical penetrometer |
| FR2670582B1 (en) * | 1990-12-12 | 1994-08-26 | Castagner Bernard | PYROTECHNIC DYNAMIC PENETROMETER. |
| DE19514848A1 (en) * | 1995-04-26 | 1996-10-31 | Krautkraemer Gmbh | Hardness test method and device therefor |
| DE19514857A1 (en) * | 1995-04-27 | 1996-10-31 | Krautkraemer Gmbh | Method for testing the hardness of workpieces and device for carrying out this method |
| DE19904448A1 (en) * | 1999-02-04 | 2000-08-24 | Murat Bajozitovic Bakirov | Non-destructive determination of local mechanical properties employs inductive determination of indenter velocity before and after impact, determining e.g. stiffness and damping characteristics. |
| JP6624564B2 (en) * | 2015-11-05 | 2019-12-25 | 株式会社山本科学工具研究社 | Coefficient of restitution measurement and hardness measurement |
| IT201800002034U1 (en) * | 2018-03-07 | 2019-09-07 | Device for the non-destructive viscoelastic characterization of materials equipped with a snap button | |
| CN112630078B (en) * | 2020-12-17 | 2023-06-20 | 安徽工程大学 | Detection device for electromagnetic shielding composite fiber membrane |
| CN112730120B (en) * | 2020-12-23 | 2022-06-24 | 安正计量检测有限公司 | A interior formula measuring instrument for hardness detects |
| CN113533105B (en) * | 2021-09-16 | 2021-12-03 | 顺庭模具科技南通有限公司 | Mould intensity check out test set |
| CN117902263B (en) * | 2024-03-19 | 2024-05-28 | 山西戴德测控技术股份有限公司 | Roller type online belt hardness detection device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE750779C (en) * | 1943-02-02 | 1945-01-26 | Hardness tester working according to the penetration method with a device for displaying the penetration depth of the penetrator | |
| US2654244A (en) * | 1949-12-06 | 1953-10-06 | Thompson Prod Inc | Rebound hardness measuring device |
| US2677961A (en) * | 1950-08-24 | 1954-05-11 | Paul Zaro | Portable hardness tester |
| US2764702A (en) * | 1953-03-19 | 1956-09-25 | Bendix Aviat Corp | Velocity transducer |
| DE1187394B (en) * | 1962-03-03 | 1965-02-18 | Drello Ing Paul Drewell | Retractable hardness tester |
| BE789742A (en) * | 1971-10-15 | 1973-02-01 | Schmidt Ernst | HARDNESS TEST METHOD AND DEVICE |
-
1974
- 1974-11-07 DE DE2452880A patent/DE2452880C2/en not_active Expired
-
1975
- 1975-10-30 NL NLAANVRAGE7512714,A patent/NL188961C/en not_active IP Right Cessation
- 1975-10-31 GB GB45554/75A patent/GB1485218A/en not_active Expired
- 1975-11-04 AT AT0839975A patent/AT371254B/en not_active IP Right Cessation
- 1975-11-05 CH CH1429875A patent/CH596550A5/xx not_active IP Right Cessation
- 1975-11-05 BE BE161595A patent/BE835263A/en not_active IP Right Cessation
- 1975-11-05 IN IN2117/CAL/1975A patent/IN145128B/en unknown
- 1975-11-05 SU SU752188493A patent/SU971119A3/en active
- 1975-11-05 DD DD189268A patent/DD121184A5/xx unknown
- 1975-11-05 FR FR7533865A patent/FR2290660A1/en active Granted
- 1975-11-05 SE SE7512411A patent/SE418421B/en not_active IP Right Cessation
- 1975-11-05 CS CS757456A patent/CS222221B2/en unknown
- 1975-11-06 BR BR7507334*A patent/BR7507334A/en unknown
- 1975-11-06 DK DK499475A patent/DK152311C/en not_active IP Right Cessation
- 1975-11-06 CA CA239,142A patent/CA1050784A/en not_active Expired
- 1975-11-06 ZA ZA756981A patent/ZA756981B/en unknown
- 1975-11-06 IT IT12865/75A patent/IT1053136B/en active
- 1975-11-07 JP JP50133160A patent/JPH0120370B2/ja not_active Expired
- 1975-11-07 AU AU86427/75A patent/AU504400B2/en not_active Expired
-
1977
- 1977-03-30 ES ES457368A patent/ES457368A1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| NL7512714A (en) | 1976-05-11 |
| AU8642775A (en) | 1977-05-12 |
| ATA839975A (en) | 1982-10-15 |
| SE418421B (en) | 1981-05-25 |
| DE2452880A1 (en) | 1976-05-20 |
| DK499475A (en) | 1976-05-08 |
| BR7507334A (en) | 1976-08-03 |
| ES457368A1 (en) | 1978-02-16 |
| DE2452880C2 (en) | 1986-01-02 |
| FR2290660B1 (en) | 1981-08-28 |
| DD121184A5 (en) | 1976-07-12 |
| GB1485218A (en) | 1977-09-08 |
| JPS5192673A (en) | 1976-08-13 |
| ZA756981B (en) | 1976-11-24 |
| BE835263A (en) | 1976-03-01 |
| SU971119A3 (en) | 1982-10-30 |
| AU504400B2 (en) | 1979-10-11 |
| CS222221B2 (en) | 1983-05-27 |
| CH596550A5 (en) | 1978-03-15 |
| AT371254B (en) | 1983-06-10 |
| JPH0120370B2 (en) | 1989-04-17 |
| FR2290660A1 (en) | 1976-06-04 |
| CA1050784A (en) | 1979-03-20 |
| NL188961C (en) | 1992-11-16 |
| DK152311B (en) | 1988-02-15 |
| NL188961B (en) | 1992-06-16 |
| DK152311C (en) | 1988-07-25 |
| IN145128B (en) | 1978-09-02 |
| IT1053136B (en) | 1981-08-31 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| NAL | Patent in force |
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| NUG | Patent has lapsed |
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