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DE375405C - Ball pressure tester - Google Patents

Ball pressure tester

Info

Publication number
DE375405C
DE375405C DED42004D DED0042004D DE375405C DE 375405 C DE375405 C DE 375405C DE D42004 D DED42004 D DE D42004D DE D0042004 D DED0042004 D DE D0042004D DE 375405 C DE375405 C DE 375405C
Authority
DE
Germany
Prior art keywords
pressure tester
ball pressure
sheet
balls
test
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.)
Expired
Application number
DED42004D
Other languages
German (de)
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.)
DUESSELDORFER MASCHB AKT GES V
Original Assignee
DUESSELDORFER MASCHB AKT GES V
Publication date
Priority to DED42004D priority Critical patent/DE375405C/en
Application granted granted Critical
Publication of DE375405C publication Critical patent/DE375405C/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

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)

Description

Kugeldruckprüfer. Wie bekannt, tritt bei den sonst üblichen Prüfungsarten der Nachteil ein, daß sich die dünnen Bleche von etwa a mm abwärts durchdrücken und aufwölben und dadurch der Kugeleindruck in seiner Tiefe und in seinem Durchmesser nicht mehr genau der tatsächlichen Materialhärte entspricht. Nach der Erfindung werden zwei genau zentrisch ül,-ereinandergeführte Stahlkugeln verwendet, zwischen denen das zu prüfende Blech eingeschoben wird, so daß gleichzeitig von beiden Seiten Kugeleindruckwirkungen erhalten werden.Ball pressure tester. As is known, occurs in the otherwise usual types of exams the disadvantage that the thin sheets of about a mm push through downwards and bulge and thereby the spherical impression in its depth and in its diameter no longer corresponds exactly to the actual material hardness. According to the invention two exactly centric steel balls are used, between where the sheet to be tested is inserted, so that both sides are at the same time Ball impression effects can be obtained.

Der Prüfer ist auf der Zeichnung dargestellt. Zwischen zwei genau zentrisch geführten Kugeln k, und k, wird das zu prüfende Blech b eingeschoben. Daher erfolgt die Härteprüfung gleichzeitig sowohl von oben wie von unten, so daß in einwandfreier Weise die Eindrucktiefe festgestellt werden kann.The inspector is shown on the drawing. Between two exactly centrically guided balls k, and k, the sheet to be tested b is inserted. The hardness test is therefore carried out simultaneously from both above and below, so that the depth of the indentation can be determined in an impeccable manner.

Claims (1)

PATENT-ANsPRUcH: Kugeldruckprüfer für Feinbleche, dadurch gekennzeichnet, daB in einem Halter zwei Kugeln (k" k.) genau zentrisch übereinandergeführt und gegeneinander beweglich sind, zwischen denen das Prüfblech (b) derart sich einschieben läßt, daB gleichzeitig und an derselben Stelle der beiden Blechseiten der Prüfungseindruck erhältlich ist.PATENT CLAIM: Ball pressure tester for sheet metal, characterized by that in a holder two balls (k "k.) are exactly centered on top of each other and are mutually movable, between which the test plate (b) slide in such a way allows the test impression to be made at the same time and at the same point on both sides of the sheet is available.
DED42004D Ball pressure tester Expired DE375405C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DED42004D DE375405C (en) Ball pressure tester

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DED42004D DE375405C (en) Ball pressure tester

Publications (1)

Publication Number Publication Date
DE375405C true DE375405C (en) 1923-05-30

Family

ID=7046505

Family Applications (1)

Application Number Title Priority Date Filing Date
DED42004D Expired DE375405C (en) Ball pressure tester

Country Status (1)

Country Link
DE (1) DE375405C (en)

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