US3102090A - System and universal apparatus for the complete preparing of metallographic samples - Google Patents

System and universal apparatus for the complete preparing of metallographic samples Download PDF

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Publication number
US3102090A
US3102090A US75498A US7549860A US3102090A US 3102090 A US3102090 A US 3102090A US 75498 A US75498 A US 75498A US 7549860 A US7549860 A US 7549860A US 3102090 A US3102090 A US 3102090A
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United States
Prior art keywords
plate
sample
electrolytic
samples
rotating
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 - Lifetime
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US75498A
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English (en)
Inventor
Bassi Alberto
Corsetti Carlo
Mantega Franco
Perona Giovanni
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CENTRO INFORMAZIONI STUDI ESPERIENZE Srl
CT INFORMAZIONI STUDI ESPERIEN
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CT INFORMAZIONI STUDI ESPERIEN
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N1/00—Sampling; Preparing specimens for investigation
    • G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
    • G01N1/32—Polishing; Etching
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F3/00—Electrolytic etching or polishing
    • C25F3/16—Polishing
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25F—PROCESSES FOR THE ELECTROLYTIC REMOVAL OF MATERIALS FROM OBJECTS; APPARATUS THEREFOR
    • C25F7/00—Constructional parts, or assemblies thereof, of cells for electrolytic removal of material from objects; Servicing or operating

Definitions

  • the present invention concerns a system and universal apparatus enabling one to carry out all operations necessary for the preparation of metallographic samples to be observed at the microscope.
  • the apparatus according to the invention enables one to carry out preliminary smoothing and mechanical polishing as well as electrolytic polishing and ancdic etching of metals.
  • the apparatus according to the invention is a universal apparatus which serves at will:
  • the electrolytic cleansing and the anodic etching according to the present invention consists essentially in that the cathode constituted by a support for the electrolytic liquid, as well as the anode, constituted by the sample to be treated, are made to rotate at contact with each other; the pressure at which said contact takes place is conveniently adjustable and the speeds of rotation may be equal or different and conveniently adjustable too.
  • the mechanical preparation of metallogr-aphic samples essentially consists in that the sample is held stationary by a sample-carrying support and is pressed with adjustable pressure against a rotary plate carrying the abrasive papersfor smoothing, or fabrics for polishing, While water or a liquid is dripped onto the rotating plate.
  • the apparatus according to the invention is substantially identical for the one and the other type of preparation. It comprises essentially a rotating plate, a sample carrier, an arm carrying the sample carrier to press it with the desired adjustable pressure against the rotating plate, a tank from which a liquid which drips onto the rotating plate, and a collecting bin surrounding the rotating plate for collecting said liquid.
  • the apparatus embodied for electrolytic cleansing and for anodic etching
  • FIG. 2 the apparatuses embodied for mechanical cleansing and smoothing.
  • the plate 1 is covered by a fabric 11 resistant against the acids, which acts as a support for the electrolytic liquid.
  • the plate is covered by two fabrics, of which the lower one is very thick and has the function of acting as a support for the electrolytic liquid and of sufliciently separating the two metal electrodes to avoid short-circuits, and the upper one is very soft and has the function of ensuring the rubbing of the sample on a surface that cannot damage it.
  • the rotation of the plate 1 is controlled by any means, not shown.
  • the rotation of the support 8 takes place by means of friction between its external surface 8, which to this end may be covered by a rubber sheath, and the inner surface of the ring '7 which may be conveniently knurled.
  • the rotation of the cathode constituted by the support 1 for the electrolytic liquid, permits the depolarization of the electrodes and the consequent elimination of the more or less serious defects of polish-ing of the sample.
  • the rotation of the sample 3 is convenient in order to attain a uniform distribution of the electrolyte over the surface of said sample, which is given a uniform etching or polishing.
  • the derivation of the movement of rotation of the sample-carrier might be effected, instead of by means of friction as illustrated, even by means of a gearing transmission or the like, and as Well by such a transmission as to enable adjustment of the speed of rotation of the sample-carrier 8 with respect to that of the plate 1.
  • the adjustment of the contact pressure between the sample 3 and the plate 1 is necessary for the treatment of the various kinds of metals and in order to be able to pass from polishing over to anodic etching of the sample.
  • the apparatus illustrated in FIG. 2 is embodied as for the mechanical preparation of the samples 3.
  • the adaptations for the one or the other kind of preparation may be constituted by the mere replacement of the ring 7, or they may more conveniently be constituted by the replacement of the entire rotating plate 1 with the peripheral ring 7' and the respective means (abrasive papers or fabrics) fixed on said plate.
  • the apparatus illustrated in FIG. 1 as embodied for the electrolytic preparation of the samples may be used as it is for mechanical preparation, merely taking 4 away the electric connections.
  • the apparatus illustrated in FIG. 2 is employable for electrolytic operation provided the respective electric connections are applied.
  • Apparatus for carrying out electrolytic cleaning and anodic etching of metallographic samples comprising a horizontal circular plate mounted for rotation around a vertical axis, means for rotating the plate; a fabric covering on said plate, means for rotatably holding the sample in contact with said fabric adjacent the periphery of said plate, means for rotating said last named means, means for supplying liquid on to said plate and means for supplying electric current to said plate and said means for holding a sample.
  • Apparatus as defined in claim 4 in which the means for holding the sample is mounted on one end of a pivoted arm and means for varying the vertical pressure on the other end of said arm.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Sampling And Sample Adjustment (AREA)
US75498A 1960-08-11 1960-12-13 System and universal apparatus for the complete preparing of metallographic samples Expired - Lifetime US3102090A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT1430160 1960-08-11

Publications (1)

Publication Number Publication Date
US3102090A true US3102090A (en) 1963-08-27

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US75498A Expired - Lifetime US3102090A (en) 1960-08-11 1960-12-13 System and universal apparatus for the complete preparing of metallographic samples

Country Status (5)

Country Link
US (1) US3102090A (enrdf_load_stackoverflow)
BE (1) BE607082A (enrdf_load_stackoverflow)
FR (1) FR1297449A (enrdf_load_stackoverflow)
GB (1) GB943123A (enrdf_load_stackoverflow)
NL (1) NL268148A (enrdf_load_stackoverflow)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3445372A (en) * 1965-12-13 1969-05-20 Westinghouse Electric Corp Apparatus for electrochemically removing the surface layer from a workpiece
US3673063A (en) * 1971-03-31 1972-06-27 Avco Corp Production of lead-tin-telluride material for infrared detectors
US4220504A (en) * 1979-04-16 1980-09-02 Burton Silverplating Company Selective electroplating
US4377447A (en) * 1981-04-20 1983-03-22 Bednarz Joseph F Method for graining metal lithographic plate
US4421624A (en) * 1980-03-25 1983-12-20 Hitachi Shipbuilding & Engineering Co., Ltd. Apparatus for continuously processing a band-shape material
CN111474031A (zh) * 2020-06-10 2020-07-31 无锡统力电工股份有限公司 一种金相样品制作辅助装置

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4190513A (en) * 1978-09-18 1980-02-26 Jumer John F Apparatus for containerless portable electro-polishing
CN110987563B (zh) * 2019-12-23 2025-07-18 湖南大学 用于研磨金相样品的夹持装置、研磨系统及研磨方法
CN114473809B (zh) * 2021-12-09 2023-11-24 浙江启迪环保科技有限公司 一种自动换向及冷却的抛光机夹持系统

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2363973A (en) * 1939-07-08 1944-11-28 Revere Copper & Brass Inc Method of copper plating stainless steel cooking vessels
US2934631A (en) * 1955-06-30 1960-04-26 Imalis Rose Electrolytic metal shaping
US2965556A (en) * 1959-04-15 1960-12-20 Struers Chemiske Lab H Apparatus for the electro-mechanical polishing of surfaces

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2363973A (en) * 1939-07-08 1944-11-28 Revere Copper & Brass Inc Method of copper plating stainless steel cooking vessels
US2934631A (en) * 1955-06-30 1960-04-26 Imalis Rose Electrolytic metal shaping
US2965556A (en) * 1959-04-15 1960-12-20 Struers Chemiske Lab H Apparatus for the electro-mechanical polishing of surfaces

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3445372A (en) * 1965-12-13 1969-05-20 Westinghouse Electric Corp Apparatus for electrochemically removing the surface layer from a workpiece
US3673063A (en) * 1971-03-31 1972-06-27 Avco Corp Production of lead-tin-telluride material for infrared detectors
US4220504A (en) * 1979-04-16 1980-09-02 Burton Silverplating Company Selective electroplating
US4421624A (en) * 1980-03-25 1983-12-20 Hitachi Shipbuilding & Engineering Co., Ltd. Apparatus for continuously processing a band-shape material
US4377447A (en) * 1981-04-20 1983-03-22 Bednarz Joseph F Method for graining metal lithographic plate
CN111474031A (zh) * 2020-06-10 2020-07-31 无锡统力电工股份有限公司 一种金相样品制作辅助装置

Also Published As

Publication number Publication date
FR1297449A (fr) 1962-06-29
NL268148A (enrdf_load_stackoverflow)
GB943123A (en) 1963-11-27
BE607082A (fr) 1961-12-01

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