US2967792A - Spinnerette - Google Patents

Spinnerette Download PDF

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Publication number
US2967792A
US2967792A US856634A US85663459A US2967792A US 2967792 A US2967792 A US 2967792A US 856634 A US856634 A US 856634A US 85663459 A US85663459 A US 85663459A US 2967792 A US2967792 A US 2967792A
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US
United States
Prior art keywords
spinnerette
palladium
iridium
alloys
percent
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
Application number
US856634A
Other languages
English (en)
Inventor
Ruthardt Konrad
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.)
WC Heraus GmbH and Co KG
Original Assignee
WC Heraus GmbH and Co KG
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 by WC Heraus GmbH and Co KG filed Critical WC Heraus GmbH and Co KG
Application granted granted Critical
Publication of US2967792A publication Critical patent/US2967792A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C5/00—Alloys based on noble metals
    • C22C5/04—Alloys based on a platinum group metal
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
    • D01D4/00—Spinnerette packs; Cleaning thereof
    • D01D4/02—Spinnerettes
    • D01D4/027—Spinnerettes containing inserts

Definitions

  • the present invention deals with a spinnerette for the production of synthetic filaments and more particularly with a spinnerette compound of a palladium-rich alloy.
  • Spinnerettes for the production of artificial filaments such as rayon contain many extremely fine orifices formed therethrough which are difiicult to machine and the orifice walls of the spinnerettes are subject to severe mechanical and chemical erosion and corrosion.
  • the material forming the spinnerette is of utmost importance. The material must have a high degree of hardness and must be resistant to chemical attack. Platinum group metal alloys such as platinum-iridium and platinum-rhodium have been found quite suitable as spinnerette compositions in view of their high hardness and chemical resistance.
  • Palladium-iridium and palladium-rhodium alloys are inferior to comparative platinum-iridium and platinumrhodium alloys because of their lower hardness, however minute spinning orifices are more easily formed therethrough.
  • the present invention is concerned with palladium-rich platinum group metal alloys which in an age-hardened condition possess a hardness at least equal to percentage composition comparative platinum-rich platinum group metal alloys and are otherwise more easily machined in the annealed state prior to the age-hardened state.
  • Figure 1 illustrates a cross-sectional view of a spinnerette of the invention
  • Figure 2 illustrates a cross-sectional view of a modified spinnerette.
  • Figure 1 shows an insert member 1 mounted in a hot- 2,967,792 Patented Jan. 10, 1 9 61 tom plate 2 and with a spinning orifice 3 through the insert member.
  • Figure 2 shows orifices 4 formed through a bottom plate 5.
  • a sheet of the alloy is prepared and discs are blanked from the sheet.
  • the discs are annealed by heating them at a temperature between 1100 C. and 1250 C. After suflicient heating whereby the discs are annealed, the discs are quenched and at least one orifice, preferably a plurality of orifices are drilled therethrough. Since the blanks or discs are in an annealed condition, the orifices are formed without great difiiculty.
  • the spinnerettes are agehardened at temperatures between 700 C. to 900 C., e.g. 700 C. to 800 C.
  • a disc 0.01 inch in thickness and 1.2 inches in diameter was blanked from a sheet composed of 70% palladium, 10% iridium and 20% rhodium.
  • the disc was annealed at a temperature of 1200 C. for 30 minutes and quenched in water. Then a plurality of orifices of 0.002 inch diameter was drilled through the disc. Then the spinnerette was age-hardened at a temperature of 800 C. for 60 minutes.
  • the Brinell hardness of the spinnerette produced by the above example was increased from kg./mrn. to 210 kg./mm. by the above age-hardening.
  • a small percentage of the palladium may further be replaced by up to 10% and preferably not more than 2% to 3% of base metals of the group consisting of iron, cobalt, nickel, manganese, copper, indium and tungsten, which metals may be found in technical grade palladium alloys.
  • a spinnerette comprising an age-hardened metal member having at least one orifice formed therethrough and made from an alloy containing 7 percent to 15 percent iridium, 5 percent to 30 percent rhodium, the rest being Pa ad um,
  • a spinnerette according to claim 1 in which up to 15 percent of the palladium is replaced by at least one of the metals selectedfrom the group consisting of gold, silver, rhenium and a metal of the platinum group other than iridium and rhodium.
  • a spinning nozzle according to claim 1 in which up to 10 percent of the palladium is replaced by at least one of the base metals of the group consisting of iron, cobalt, nickel, manganese, copper, indium and tungsten.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Textile Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Artificial Filaments (AREA)
  • Electroplating And Plating Baths Therefor (AREA)
  • Catalysts (AREA)
US856634A 1953-12-01 1959-11-24 Spinnerette Expired - Lifetime US2967792A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DEH27562A DE1077434B (de) 1953-12-01 1953-12-01 Verwendung einer Palladiumlegierung fuer Spinnduesen
DE323563X 1953-12-01
DEH24469A DE1010742B (de) 1953-12-01 1953-12-01 Verwendung einer Palladiumlegierung fuer Spinnduesen
DE2967792X 1956-07-12

Publications (1)

Publication Number Publication Date
US2967792A true US2967792A (en) 1961-01-10

Family

ID=32398033

Family Applications (1)

Application Number Title Priority Date Filing Date
US856634A Expired - Lifetime US2967792A (en) 1953-12-01 1959-11-24 Spinnerette

Country Status (5)

Country Link
US (1) US2967792A (enrdf_load_html_response)
CH (2) CH323563A (enrdf_load_html_response)
DE (2) DE1010742B (enrdf_load_html_response)
GB (3) GB758507A (enrdf_load_html_response)
NL (2) NL209087A (enrdf_load_html_response)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3488172A (en) * 1966-11-02 1970-01-06 Owens Corning Fiberglass Corp Method and apparatus for making glass fibers from a palladium-iridium bushing
US3819366A (en) * 1969-03-21 1974-06-25 Aurium Res Corp Dental alloy
US10119177B2 (en) * 2014-02-11 2018-11-06 C. Hafner GmbH & Co. KG Precious metal alloy for use in the jewelry and watch industry

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1080784B (de) 1955-07-21 1960-04-28 Heraeus Gmbh W C Verwendung einer Palladium-Iridium-Legierung als Werkstoff fuer elektrische Kontakte und Potentiometer
FR1345180A (fr) * 1961-11-30 1963-12-06 Onderzoekings Inst Res Procédé et dispositif pour fabriquer des objets sans fin à section transversale constante en partant d'un polymère thermoplastique ainsi que les produits obtenus de cette manière
FR2403181A1 (fr) * 1977-09-20 1979-04-13 Lignes Telegraph Telephon Outil d'extrusion

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2048647A (en) * 1931-07-15 1936-07-21 Firm W C Heraeus Gmbh Process of producing hard alloys
US2071216A (en) * 1935-05-13 1937-02-16 Johnson Matthey Co Ltd Precious metal alloys
US2566283A (en) * 1948-03-16 1951-08-28 Baker & Co Inc Spinnerette

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE585545C (de) * 1930-10-21 1933-10-05 Heraeus Gmbh W C Rhodiumhaltige Palladiumlegierungen

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2048647A (en) * 1931-07-15 1936-07-21 Firm W C Heraeus Gmbh Process of producing hard alloys
US2071216A (en) * 1935-05-13 1937-02-16 Johnson Matthey Co Ltd Precious metal alloys
US2566283A (en) * 1948-03-16 1951-08-28 Baker & Co Inc Spinnerette

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3488172A (en) * 1966-11-02 1970-01-06 Owens Corning Fiberglass Corp Method and apparatus for making glass fibers from a palladium-iridium bushing
US3819366A (en) * 1969-03-21 1974-06-25 Aurium Res Corp Dental alloy
US10119177B2 (en) * 2014-02-11 2018-11-06 C. Hafner GmbH & Co. KG Precious metal alloy for use in the jewelry and watch industry

Also Published As

Publication number Publication date
CH323563A (de) 1957-08-15
NL209087A (enrdf_load_html_response)
CH344518A (de) 1960-02-15
NL93985C (enrdf_load_html_response)
GB758507A (en) 1956-10-03
DE1010742B (de) 1957-06-19
DE1077434B (de) 1960-03-10
GB830653A (en) 1960-03-16
GB837236A (en) 1960-06-09

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