WO2012153298A1 - Pièce pour robinets et accessoires, salles de bain, accessoires de salles de bain et analogues - Google Patents

Pièce pour robinets et accessoires, salles de bain, accessoires de salles de bain et analogues Download PDF

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Publication number
WO2012153298A1
WO2012153298A1 PCT/IB2012/052344 IB2012052344W WO2012153298A1 WO 2012153298 A1 WO2012153298 A1 WO 2012153298A1 IB 2012052344 W IB2012052344 W IB 2012052344W WO 2012153298 A1 WO2012153298 A1 WO 2012153298A1
Authority
WO
WIPO (PCT)
Prior art keywords
component
fittings
taps
percentage
alloy
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.)
Ceased
Application number
PCT/IB2012/052344
Other languages
English (en)
Inventor
Annalisa POLA
Lorenzo MONTESANO
Roberto Roberti
Michele Tosti
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.)
Entech SRL
Original Assignee
Entech SRL
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
Priority claimed from IT000826A external-priority patent/ITMI20110826A1/it
Application filed by Entech SRL filed Critical Entech SRL
Publication of WO2012153298A1 publication Critical patent/WO2012153298A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C18/00—Alloys based on zinc
    • C22C18/04—Alloys based on zinc with aluminium as the next major constituent
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B15/00—Layered products comprising a layer of metal
    • B32B15/01—Layered products comprising a layer of metal all layers being exclusively metallic
    • B32B15/018—Layered products comprising a layer of metal all layers being exclusively metallic one layer being formed of a noble metal or a noble metal alloy
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47K—SANITARY EQUIPMENT; ACCESSORIES THEREFOR, e.g. TOILET ACCESSORIES
    • A47K5/00—Holders or dispensers for soap, toothpaste or the like
    • A47K5/02—Soap boxes or receptacles
    • A47K5/03—Soap boxes or receptacles separate from wall or wash-stand
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/18—Roses; Shower heads
    • E—FIXED CONSTRUCTIONS
    • E03—WATER SUPPLY; SEWERAGE
    • E03C—DOMESTIC PLUMBING INSTALLATIONS FOR FRESH WATER OR WASTE WATER; SINKS
    • E03C1/00—Domestic plumbing installations for fresh water or waste water; Sinks
    • E03C1/02—Plumbing installations for fresh water
    • E03C1/04—Water-basin installations specially adapted to wash-basins or baths
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
    • F16L58/00—Protection of pipes or pipe fittings against corrosion or incrustation

Definitions

  • the present invention relates to a component for taps and fittings, bathrooms and the like of the type pointed out in the preamble of the first claim.
  • the components for bathrooms and bathroom fittings and for taps consist of valves, pipelines, pipe fittings, cocks, shower heads, or objects adapted to be installed at the end of a supply system and to enable the flow of a fluid coming out of said supply system to be adjusted and directed.
  • Zamak ® representing a zinc alloy comprising 4% aluminium and possibly copper.
  • this inner surface being normally without coating, has the material directly in contact with the fluid and therefore, due to the reduced resistance of these materials, is more subjected to deterioration.
  • patent US-B3880679 discloses a particular zinc alloy using bismuth for improving the chemical features of the compound.
  • the technical task underlying the present invention is to conceive a component for taps and fittings, bathrooms and the like capable of substantially obviating the mentioned drawbacks.
  • Another important aim of the invention is to obtain a component for taps and fittings of high quality in terms of aesthetics and reduced cost.
  • Another important aim of the invention is to obtain a component that is not subject to corrosion under stress.
  • Fig. 1 in which a component for taps and fittings, bathrooms, bathroom fittings and the like according to the invention and consisting of a shower head is shown;
  • Fig. 2 in which a set of components for taps and fittings, bathrooms, bathroom fittings and the like, respectively consisting of valve, cock or tap, soap-holder, pipe fitting, is shown.
  • component 1 for taps and fittings, bathrooms, bathroom fittings and the like is preferably an element directly in contact with fluids, more particularly with drinking water, in domestic, working or public places, for example consisting of cocks, pipelines, valves, pipe fittings, supply systems adapted to enable a fluid flow to be adjusted and directed, industrial systems for transfer of various fluids, etc.
  • component 1 can be a component used in a high-moisture environment such as a bathroom or the like. These components are therefore accessories and components for bathrooms, bathroom fittings and the like.
  • the base structure 2 is made of a zinc alloy comprising aluminium in a percentage included between 13% and 25%, and magnesium in a percentage lower than 0.1% and preferably copper in a percentage lower than 5%.
  • the zinc alloy has a copper percentage included between 0.2% and 3.5%, an aluminium percentage included between 13% and 25% and a zinc percentage substantially included between 70% and 87%.
  • the zinc percentage in this alloy is included between 80% and 75%.
  • two preferred compositions have the following formulations. First composition: aluminium 15%+1 %, magnesium 0.04%+0.02%, copper 1 %+0.5%, zinc for the balance. Second composition: aluminium 22%+1 %, magnesium 0.04%+0.02%, copper 2%+0.5%, zinc for the balance
  • impurities may be present, i.e. other substances different from those listed above and present in percentages lower than 0.05%.
  • impurities it is possible to have: iron in a maximum concentration of 0.02% because it increases brittleness; cadmium present in percentages not exceeding 0.0015% because it makes the mechanical properties worse and induces inter-crystal corrosion; and tin that is present in the alloy in the maximum concentration of 0.002% because it makes the mechanical properties worse and induces inter-crystal corrosion.
  • Lead, bismuth and nickel have a content lower than 0.004% and preferably of 0.001 %.
  • the base structure 2 it is possible to identify at least one outer surface 2a, i.e. the surface constituting part of the portion in sight of component 1 that, therefore, is not designed to come into contact with the fluid when it passes through component 1.
  • This outer surface 2a can be for example identified in the visible surface of a component for taps and fittings 1.
  • an inner surface 2b can be identified which is adapted to come into contact with the fluid, as shown in Fig. 1.
  • the component for taps and fittings 1 has a coating 3 adapted to cover at least part of the base structure 2.
  • coating 3 covers almost the whole of the outer surface 2a, while the inner surface 2b preferably remains uncoated.
  • This coating 3 comprises at least one layer made by electroplating.
  • This electroplated coating includes copper, nickel, chromium or other substances adapted to improve the resistance and aesthetic aspect of the component for taps and fittings 1 ; as an alternative to the chromium layer, gold or brass painted coatings can be used for further increasing the aesthetic value of component 1.
  • the invention comprises a new manufacturing process for the above described component for taps and fittings 1.
  • This manufacturing process comprises a shaping step in which the base structure 2 is made using said zinc alloy, and a covering step in which at least part of the outer surface 2a is coated with coating 3 obtained by electroplating.
  • the shaping step is preferably carried out by gravity casting or also by die-casting or hot moulding, which processes are known by themselves.
  • gravity casting is preferred because it is suitable for undercuts or other particular shapes frequent in taps and fittings and accessories for bathrooms. It conveniently consists of a die-casting or also sand-casting process.
  • This step is followed by another step consisting in mechanical brushing and polishing carried out manually using cleaning robots; the last-mentioned step can be replaced by or integrated with a mass-vibration process with abrasive chips (tumbling).
  • the invention enables important advantages.
  • Another advantage resides in that the components for taps and fittings 1 are particularly strong and adapted to maintain a high aesthetic value over a very long period of time even if placed in moist places such as bathrooms and the like. This advantage is due to the particular zinc alloy.
  • a further advantage is the great workability distinguishing the zinc alloy, so that component 1 can be also machined by a chip-removal process.
  • This advantage in particular is due to the copper content that does not exceed 5% so that ideal chips can be obtained in chip-removal machining processes.
  • Another aim achieved by the invention is represented by the reduced production cost of elements 1 due to the reduced cost of the alloy used as compared with brass, and by better mechanical properties as compared with Zamak ® and the polymeric materials.
  • the low working temperature greatly reduces emission of polluting fumes, in particular in case of sand casting, therefore improving safety and work quality of the workers producing these elements.
  • a further advantage of the new alloy as compared with brass is that it is not subject to corrosion under stress, so that accidental breaking of the components during assembly can be prevented.
  • the particular alloy used has high resistance to oxidation so that high amounts of uncoated components for taps and fittings 1 can be stored, coating 3 being made later on, so that the logistics connected with storage is optimised. This possibility was absolutely impossible in products made of Zamak ® because this material is highly subject to oxidation and therefore the coating must be immediately made.
  • This greater resistance to oxidation and therefore to corrosion also belongs to the pieces that have been submitted to the previously described coating and protection steps (electroplating, painting, PVD).

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Prevention Of Electric Corrosion (AREA)

Abstract

L'invention porte sur une pièce pour robinets et accessoires (1), salles de bain, accessoires de salles de bain, et analogues, laquelle pièce comprend une structure de base (2) définissant sensiblement le contour de ladite pièce (1), constituée par un alliage de zinc qui comprend de l'aluminium dans un pourcentage compris entre 13 % et 25 %, et du magnésium dans un pourcentage inférieur à 0,1 %, du cuivre dans un pourcentage inférieur à 5 %, et qui ne comprend pas de bismuth et de plomb ou qui les maintient tous les deux à l'intérieur de pourcentages inférieurs à 0,004 %.
PCT/IB2012/052344 2011-05-12 2012-05-11 Pièce pour robinets et accessoires, salles de bain, accessoires de salles de bain et analogues Ceased WO2012153298A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITMI2011A000826 2011-05-12
IT000826A ITMI20110826A1 (it) 2011-02-15 2011-05-12 Componente per rubinetteria, bagno, arredobagno e simile

Publications (1)

Publication Number Publication Date
WO2012153298A1 true WO2012153298A1 (fr) 2012-11-15

Family

ID=46456947

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2012/052344 Ceased WO2012153298A1 (fr) 2011-05-12 2012-05-11 Pièce pour robinets et accessoires, salles de bain, accessoires de salles de bain et analogues

Country Status (1)

Country Link
WO (1) WO2012153298A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE402788A (fr) *
US880679A (en) 1907-01-21 1908-03-03 Richard Mason Closure for mucilage and other receptacles.
DE614996C (de) * 1932-01-07 1935-06-25 Cie Francaise Des Conduites D Korrosionsbestaendige Metallegierung
JPH0649572A (ja) 1992-07-01 1994-02-22 Mitsui Mining & Smelting Co Ltd ダイカスト用高強度亜鉛合金及び亜鉛合金ダイカスト部品
EP1033416A1 (fr) * 1999-03-01 2000-09-06 Moen Incorporated Revêtement décoratif résistant à la corrosion et à l'abrasion
CN101851713A (zh) * 2010-06-22 2010-10-06 绍兴市天龙锡材有限公司 一种易切削高强度锌合金

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE402788A (fr) *
US880679A (en) 1907-01-21 1908-03-03 Richard Mason Closure for mucilage and other receptacles.
DE614996C (de) * 1932-01-07 1935-06-25 Cie Francaise Des Conduites D Korrosionsbestaendige Metallegierung
JPH0649572A (ja) 1992-07-01 1994-02-22 Mitsui Mining & Smelting Co Ltd ダイカスト用高強度亜鉛合金及び亜鉛合金ダイカスト部品
EP1033416A1 (fr) * 1999-03-01 2000-09-06 Moen Incorporated Revêtement décoratif résistant à la corrosion et à l'abrasion
CN101851713A (zh) * 2010-06-22 2010-10-06 绍兴市天龙锡材有限公司 一种易切削高强度锌合金

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