GB2055901A - Sintered Decorative Metallic Composite - Google Patents

Sintered Decorative Metallic Composite Download PDF

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Publication number
GB2055901A
GB2055901A GB8017274A GB8017274A GB2055901A GB 2055901 A GB2055901 A GB 2055901A GB 8017274 A GB8017274 A GB 8017274A GB 8017274 A GB8017274 A GB 8017274A GB 2055901 A GB2055901 A GB 2055901A
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GB
United Kingdom
Prior art keywords
metallic
composite material
container
materials
metallic materials
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
GB8017274A
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GB2055901B (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.)
Mitsubishi Metal Corp
Original Assignee
Mitsubishi Metal Corp
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 Mitsubishi Metal Corp filed Critical Mitsubishi Metal Corp
Publication of GB2055901A publication Critical patent/GB2055901A/en
Application granted granted Critical
Publication of GB2055901B publication Critical patent/GB2055901B/en
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F1/00—Designs or pictures characterised by special or unusual light effects
    • B44F1/08—Designs or pictures characterised by special or unusual light effects characterised by colour effects
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
    • B22F1/09—Mixtures of metallic powders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/18—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces by using pressure rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/04—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating by means of a rolling mill
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/14—Preventing or minimising gas access, or using protective gases or vacuum during welding
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B44—DECORATIVE ARTS
    • B44F—SPECIAL DESIGNS OR PICTURES
    • B44F5/00—Designs characterised by irregular areas, e.g. mottled patterns
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Manufacturing & Machinery (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)
  • Laminated Bodies (AREA)
  • Powder Metallurgy (AREA)
  • Adornments (AREA)

Abstract

A decorative metallic composite comprising different coloured metals metallurgically bonded together is made by packing the metals as powders, chips, granules etc. in a metal container and hot rolling the assembly. The preferred metal combinations are Au-Cu, Au-Pa- Ag; Au-Ag-Cu.

Description

SPECIFICATION Metallic Composite Material for Decorative Articles and Process for Producing the Same The present invention relates to metallic composite materials for decorative articles having complicated flow marks or decorative patterns of color combination on the finished surface thereof which composite materials are made of more than two kinds of metallic materials each of which has a color tone different from one another. This invention also relates to a process for producing such composite materials.
Conventionally, precious metals, various sorts of metals, their alloys, and composite materials comprising such metals and their alloys have been extensively used for producing various kinds of accessories, ornaments and craft articles, etc. (hereinafter referred to generally as "decorative articles") including a watchband, a bracelet, a cigarette lighter, a brooch, a buckle, a fountain pen, a cigarette case, a pendant, a tiepin, cuff links and the like.
Generally, composite materials composed of metals and their alloys (hereinafter referred to as "metallic composite materials") for use in the production of the above-mentioned decorative articles are made by inlaying, soldering and adhesive-bonding processes and the like. However, the inlaying process has been found disadvantageous in that there tends to form a gap at the boundaries or areas of contact where the adjacent metallic materials are joined together, so that some of the associated metallic materials may become disengaged from the other. Even if such disengagement of the constituent metallic materials does not take place, such gaps are quite liable to be filled with foreign matters such as dust, dirt and the like, so that the decorative articles made of such composite material detracts much from the appearance.This is apparently undesirable from an aesthetical point of view.
The soldering process and the adhesive-bonding process have also been found not satisfactory in that some of the soldering material or the adhesive employed is unavoidabiy caused to appear at the boundaries or areas of contact where the adjacent metallic materials are joined together. This will adversely affect the desired color combination and color tones of the composite materials.
Even more importantly, with the above-mentioned processes, the kinds of the metallic materials for the composite materials are quite limited, so that although composite materials having relatively simple color combinations are available, those with complicated color combinations can not be obtained.
Summary of the Invention It is an object of the present invention to provide a novel metallic composite material for decorative articles which eliminates the above-mentioned deficiencies of the prior art metallic composite materials.
Another object is to provide a novel metallic composite material which has a complicated decorative pattern of color combination.
A further object is to provide a process for producing such metallic composite material.
According to the present invention, more than two starting metallic materials of different colors in the form of powder, granule, bar, plate, chip and the like are inserted into a metallic container preferably made of metal having a higher melting point than the starting metallic materials. A molding lubricant may be applied to the inner surface of the metallic container if necessary. The metallic container is then subjected to vacuum sealing and subsequently to hot processing at more than 30% of the full hot processing percentage, such as hot rolling, hot extrusion, hot extrusion under hydrostatic pressure, hot drawing and the like, so that each adjacent metallic materials are metallurgically joined together.Then, the metallic container is removed from the thus metallurgically joined metallic materials by pickling, polishing or cutting treatment to provide the composite material with a surface having a complicated decorative pattern of color combination which has been achieved by the effect of the flow marks produced by the hot processing. The so produced composite material may be subjected to a satinizing treatment so that it has a satin finish on the surface to make clear the color contrast of the composite material.
As mentioned above, the hot processing percentage, at which the hot processing is carried out, is determined to more than 30% of the full hot processing percentage. The reason is that where less than 30% of the full hot processing percentage is applied, there are occasions when some combinations of metallic materials fail to be completely metallurgically joined together to provide the desired metallic composite material. Thus, it has been found necessary to provide more than 30% of the full hot processing percentage to completely metallurgically join together any combination of metallic materials constituting the metallic composite material.
By the term "% of the full processing percentage", we mean the total reduction in thickness, i.e.
original thickness - final thickness x100 original thickness This may be achieved in several separate stages, but similarly, for each of.these stages, the term "% of the processing percentage" means: thickness before each processing -- thickness after each processing x100 thickness before each processing The invention is illustrated with reference to the accompanying drawings in which: Fig. 1 is a partly cross-sectional, perspective view of a cylindrical member filled with starting metallic materials of different colours, showing one embodiment of the present invention; Fig. 2 is a view similar to Fig. 1 but showing the cylindrical member and its associated metallic materials in flattened shape; and Fig. 3 is a perspective view of the composite material provided in accordance with the present invention.
The present invention will now be illustrated by the following examples and with reference to the drawings.
Example 1 18K gold alloy particles (75% Au25% Cu) of reddish color, 18K gold alloy particles (75% Au 20% Pd5% Ag) of whitish color and 1 BK gold alloy particles (75% Au-I 7% Ag8% Cu) of yellowish color (all the percentages mentioned above are given by % by weight) were prepared as starting metallic materials. These three kinds of 1 8K gold alloy particles have a particle diameter of 1 to 3 mm.Then, the three kinds of gold alloy particles were mixed with one another in an equal amount, and subsequently the thus combined gold alloy particles were filled into a cylindrical container having a closed bottom and made of soft steel as shown in Fig. 1, the container being 30 mm in inner diameter, 50 mm in length and 2 mm in thickness. The internal pressure of the container was kept to 10-5 torr by vacuum and the container is sealed. Then, the thus sealed container was heated to a temperature of 7500C and was subjected three times to hot rolling of 30% of the processing percentage so that the container was rolled into a flattened shape as illustrated in Fig. 2. Then, the container thus hot rolled was dipped in a dilute sulfuric acid bath where the container was removed from the filled metallic materials.The resultant gold alloy particles thus removed from the container were subjected to a heat treatment again at a temperature of 7500C and subsequently seven times to hot rolling of 20% of the processing percentage so that a composite material having a thickness of 2.5 mm was produced as shown in Fig. 3.
The thus produced composite material was constructed in such a manner that the three kinds of gold alloy particles were completely metallurgically joined together at their respective adjacent surfaces. The composite material had a complicated decorative pattern of color combination which was achieved by the effect of the flow marks produced by the hot rolling processing.
Example 2 Stainless steel (SUS 385) chips of whitish color and pure copper chips of reddish color were prepared as the starting metallic materials. These materials were mixed with each other in an equal amount. The starting materials thus mixed together were filled into a dies with an internal dimension having a width of 100 mm, a length of 50 mm and a depth of 10 mm. The thus filled metallic materials were pressed under the pressure of 30 kg/mm2 into a powder compact. Then, the powder compact was placed in a box made of soft steel and having a thickness of 5 mm, the internal dimension of the box being 100 mm wide, 50 mm long and 9 mm deep. Then, the box was evacuated and sealed, and the thus sealed box was heated to a temperature of 9000C and was subjected twice to hot rolling of 30% of the processing percentage.Then, the hot rolled box was dipped in a dilute sulfuric acid bath for removing said box from the filled metallic materials through a pickling treatment to provide a metallic composite material. The composite material was produced in such a manner that the constituent stainless steel chips and pure copper chips were completely metallurgically joined together at their respective adjacent surfaces. The composite material had a complicated decorative pattern of color combination by virtue of the flow marks produced by the hot rolling processing.
The metallic composite material thus produced can be cold rolled into plates having a thickness suitable for practical use.
Example 3 The composite material of three kinds of gold alloys prepared according to the process illustrated in Example 1 was subjected to a buffing operation and a barreling operation to provide a satin finish.
There was obtained a marked contrast between the colors constituting the decorative pattern of the composite material. Such satin finish may be obtained by any other conventional cutting operation such as an etching operation and a diamond cutting operation.
Metallic materials other than those shown in the above Examples, may be used as the starting metallic materials. As the starting metallic material of whitish color, soft steel, Ni and Ni alloy, Al and Al alloy, Ti and Ti alloy, cupro-nickel, Monad metal, nickel silver, Ag and Ag alloy and so on may be used; and as the starting metallic material of yellowish color, Au, brass, aluminum bronze may be used; and as the starting metallic material of reddish color, pure copper, low-alloy copper and the like may be employed.
The metallic composite material according to the present invention is advantageous in that the joined consituent metallic materials are so positively metallurgically combined together that they will not be dislodged or disengaged from the composite material even when the composite material is subjected to heavy plastics processing.
In addition, the metallic composite material has a highly fashionable, complicated decorative pattern and can be produced in a simple and inexpensive manner.

Claims (4)

Claims
1. A metallic composite material for decorative articles composed of more than two kinds of metallic materials having different colors, said metallic materials being joined together metallurgically at their respective adjacent surfaces to provide a composite material, and said composite material having complicated flow marks defining a decorative pattern of color combination.
2. A metallic composite material according to claim 1, in which said composite material has a satin finish on the surface thereof.
3. A process for producing a metallic composite material for decorative articles which comprises the steps of: inserting more than two kinds of metallic material, having different colors and a selected shape, into a metallic container; vacuum sealing said container; hot rolling said container at more than 30% of the full processing percentage so that the metallic materials are joined together metallurgically at their respective adjacent surfaces; and removing said container from the filled metallic materials to provide a metallic composite material which has complicated flow marks defining a decorative pattern of color combination.
4. A process according to claim 3, further comprising the step of applying a satin finish to the surface of the so produced metallic composite material after said removal operation.
GB8017274A 1979-07-02 1980-05-27 Sintered decorative metallic composite Expired GB2055901B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP54083746A JPS6036354B2 (en) 1979-07-02 1979-07-02 Manufacturing method for metal composites for decorative parts

Publications (2)

Publication Number Publication Date
GB2055901A true GB2055901A (en) 1981-03-11
GB2055901B GB2055901B (en) 1984-04-04

Family

ID=13811087

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8017274A Expired GB2055901B (en) 1979-07-02 1980-05-27 Sintered decorative metallic composite

Country Status (5)

Country Link
JP (1) JPS6036354B2 (en)
DE (1) DE3022112A1 (en)
FR (1) FR2460744A1 (en)
GB (1) GB2055901B (en)
IT (1) IT1145664B (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0457350A1 (en) * 1990-05-18 1991-11-21 Mitsubishi Materials Corporation Precious metal article, method for manufacturing same, moldable mixture for use in manufacture of same and method for producing moldable mixture
EP1319350A2 (en) * 2001-12-13 2003-06-18 Lac Spa Method of making products of precious meterials and wearable multicolor ornamental articles manufactured with such products
CN110281683A (en) * 2019-07-18 2019-09-27 广州番禺职业技术学院 A kind of artwork Ornament production method of ceramic inserts metal
CN110421157A (en) * 2019-07-18 2019-11-08 广州番禺职业技术学院 A kind of artwork Ornament and preparation method thereof with true color separation macular area
CN110435346A (en) * 2019-07-18 2019-11-12 广州番禺职业技术学院 A kind of gold and silver mistake artwork Ornament and preparation method thereof
EP3515638A4 (en) * 2016-10-27 2020-02-19 Damasteel AB Method of making a patterned composite metal plate
CN112756590A (en) * 2019-10-21 2021-05-07 深圳市利众智合科技有限公司 Method for manufacturing multicolor metal ornaments

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR581652A (en) * 1923-08-14 1924-12-03 Process for obtaining <in the mass> topical designs and effects similar to marble and <batik>, with nitrocellulose, acetyl-cellulose and other cellulose derivatives
DE674124C (en) * 1938-02-13 1939-04-05 Marie Senf Geb Schuldt Process for making large, hollow sculptures
GB867094A (en) * 1957-06-20 1961-05-03 Mannesmann Ag Improvements in or relating to methods of producing articles and methods of treatingalloy steel
DE2017258A1 (en) * 1970-04-10 1971-10-21 Krebsoege Gmbh Sintermetall Iron-chromium sintered alloy
DE2363881C3 (en) * 1973-02-26 1980-02-07 Citizen Watch Co., Ltd., Tokio Decorative aluminum products and process for their manufacture
FR2304678A1 (en) * 1975-03-21 1976-10-15 Ugine Aciers NEW PROCESS FOR MAKING STEELS WITH IMPROVED MACHINABILITY FROM DIVIDED METAL
FR2367123A1 (en) * 1976-10-11 1978-05-05 Gras Et Etienne Patina prodn. of tin articles - using a soln. of tartar emetic in hydrochloric acid
AT359810B (en) * 1978-03-14 1980-12-10 Voest Alpine Ag METHOD FOR PRODUCING PLATED SHEETS

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0457350A1 (en) * 1990-05-18 1991-11-21 Mitsubishi Materials Corporation Precious metal article, method for manufacturing same, moldable mixture for use in manufacture of same and method for producing moldable mixture
EP1319350A2 (en) * 2001-12-13 2003-06-18 Lac Spa Method of making products of precious meterials and wearable multicolor ornamental articles manufactured with such products
EP1319350A3 (en) * 2001-12-13 2004-05-26 Lac Spa Method of making products of precious meterials and wearable multicolor ornamental articles manufactured with such products
EP3515638A4 (en) * 2016-10-27 2020-02-19 Damasteel AB Method of making a patterned composite metal plate
US11446736B2 (en) 2016-10-27 2022-09-20 Damasteel Ab Method of making a patterned composite metal plate
CN110281683A (en) * 2019-07-18 2019-09-27 广州番禺职业技术学院 A kind of artwork Ornament production method of ceramic inserts metal
CN110421157A (en) * 2019-07-18 2019-11-08 广州番禺职业技术学院 A kind of artwork Ornament and preparation method thereof with true color separation macular area
CN110435346A (en) * 2019-07-18 2019-11-12 广州番禺职业技术学院 A kind of gold and silver mistake artwork Ornament and preparation method thereof
CN110435346B (en) * 2019-07-18 2021-11-19 广州番禺职业技术学院 Gold and silver staggered craft ornament and manufacturing method thereof
CN112756590A (en) * 2019-10-21 2021-05-07 深圳市利众智合科技有限公司 Method for manufacturing multicolor metal ornaments

Also Published As

Publication number Publication date
IT1145664B (en) 1986-11-05
DE3022112A1 (en) 1981-01-08
IT8049148A0 (en) 1980-07-02
GB2055901B (en) 1984-04-04
FR2460744B1 (en) 1985-02-22
DE3022112C2 (en) 1988-10-06
JPS6036354B2 (en) 1985-08-20
FR2460744A1 (en) 1981-01-30
JPS569084A (en) 1981-01-29

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19980527