DE2114938B2 - Pneumatically operated hardness testing machine - has upward vertical drive for cylindrical shaft carrying test-piece on platform beneath diamond tip - Google Patents

Pneumatically operated hardness testing machine - has upward vertical drive for cylindrical shaft carrying test-piece on platform beneath diamond tip

Info

Publication number
DE2114938B2
DE2114938B2 DE19712114938 DE2114938A DE2114938B2 DE 2114938 B2 DE2114938 B2 DE 2114938B2 DE 19712114938 DE19712114938 DE 19712114938 DE 2114938 A DE2114938 A DE 2114938A DE 2114938 B2 DE2114938 B2 DE 2114938B2
Authority
DE
Germany
Prior art keywords
piece
diamond tip
test
testing machine
cylindrical shaft
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
DE19712114938
Other languages
German (de)
Other versions
DE2114938A1 (en
DE2114938C3 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
PAGE-WILSON CORP., BRIDGEPORT, CONN., US
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to DE19712114938 priority Critical patent/DE2114938C3/en
Priority claimed from DE19712114938 external-priority patent/DE2114938C3/en
Publication of DE2114938A1 publication Critical patent/DE2114938A1/en
Publication of DE2114938B2 publication Critical patent/DE2114938B2/en
Application granted granted Critical
Publication of DE2114938C3 publication Critical patent/DE2114938C3/en
Expired legal-status Critical Current

Links

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
    • G01N3/42—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid
    • G01N3/44—Investigating hardness or rebound hardness by performing impressions under a steady load by indentors, e.g. sphere, pyramid the indentors being put under a minor load and a subsequent major load, i.e. Rockwell system
    • 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
    • G01N2203/003—Generation of the force
    • G01N2203/0042—Pneumatic or hydraulic means
    • G01N2203/0044—Pneumatic means

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

The machine for testing the hardness of samples comprises a fram-work with a cross-beam secured by two heavy section lead screws (2) with clamp nuts (8). The test-piece (20) is situated co-axially with and immediately below a mounting bearing a downwards pointing diamond tip (3). The test-piece (20) is mounted on a cylindrical platform (28) fixed by bolts to the upper end of a long bearing shaft. The latter is supported at its lower end by a baseplate with a bellows attachment. Air is used as a pneumatic medium to compress the test piece and a control circuit enable both the pressure level and the relative position of the test piece and diamond tip to be measured.
DE19712114938 1971-03-27 Hardness tester Expired DE2114938C3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19712114938 DE2114938C3 (en) 1971-03-27 Hardness tester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19712114938 DE2114938C3 (en) 1971-03-27 Hardness tester

Publications (3)

Publication Number Publication Date
DE2114938A1 DE2114938A1 (en) 1972-09-28
DE2114938B2 true DE2114938B2 (en) 1977-04-14
DE2114938C3 DE2114938C3 (en) 1977-12-01

Family

ID=

Also Published As

Publication number Publication date
DE2114938A1 (en) 1972-09-28

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Legal Events

Date Code Title Description
C3 Grant after two publication steps (3rd publication)
E77 Valid patent as to the heymanns-index 1977
8327 Change in the person/name/address of the patent owner

Owner name: PAGE-WILSON CORP., BRIDGEPORT, CONN., US

8328 Change in the person/name/address of the agent

Free format text: ZIPSE, E., DIPL.-PHYS., 7570 BADEN-BADEN HABERSACK, H., DIPL.-ING., PAT.-ANW., 8000 MUENCHEN

8339 Ceased/non-payment of the annual fee