RU2500543C1 - Method of production of image on surface of titanium products - Google Patents

Method of production of image on surface of titanium products Download PDF

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RU2500543C1
RU2500543C1 RU2012131921/28A RU2012131921A RU2500543C1 RU 2500543 C1 RU2500543 C1 RU 2500543C1 RU 2012131921/28 A RU2012131921/28 A RU 2012131921/28A RU 2012131921 A RU2012131921 A RU 2012131921A RU 2500543 C1 RU2500543 C1 RU 2500543C1
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image
surface
temperature
titanium
product
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RU2012131921/28A
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Russian (ru)
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Алексей Геннадьевич Гога
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Алексей Геннадьевич Гога
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Abstract

FIELD: printing.
SUBSTANCE: invention relates to the field of advertising, printing and photography, and is intended to produce high-strength images on metal products, in particular, on the surface of titanium products, and can be used in various fields of industry, arts and crafts. The method includes obtaining an image on the intermediate base, the image transfer on the surface of the product, high temperature burning of the product with the printed image in the oven. As the product for transferring image the titanium sheet is used. Before applying image the titanium sheet is subjected to high temperature burning at a temperature of 890-1020°C to form on its surface of a layer of the titanium oxide uniform in thickness, exposed by this temperature for 15-90 minutes. The burning temperature is selected depending on the desired shade of coloring of the oxide layer, and the exposure time - depending on its desired thickness, the image transfer is carried out on the surface of the obtained titanium oxide layer, and a high temperature burning of the product with the applied image is carried out at a temperature of 550±15°C.
EFFECT: increasing longevity of the images obtained, simplification and reduction of cost of the technologic process of their preparation, as well as the high artistic quality of the image to produce its various shades.
8 cl

Description

The invention relates to the field of advertising, printing and photography and is intended to obtain high-strength images on metal products, in particular, on the surface of titanium products, and can find application in various fields of industry, arts and crafts.

From patent document SU 1772777, a method is known for producing colored images on the surface of metal products by treating a metal surface with a halogen-containing compound or in a solution of a halogen-containing compound and exposure to ultraviolet radiation. The method is simple and allows you to get color images from yellow to black, depending on time and exposure. However, the image quickly loses color and contrast, fades when exposed to environmental factors, is worn out and loses its consumer properties.

RU 2357844 discloses a method for producing a color image on metal surfaces by forming nanostructures in the form of oxide films resulting from local heating by a pulsed heat source. When implementing the method, the temperature necessary for the formation of an oxide film with predetermined calorimetric characteristics should be created in the exposure zone. The invention allows to apply images to any metal surface without prior processing. However, the presented technology requires high-precision equipment, cannot be replicated, it is laborious, preliminary calculation of operating modes is required, a slight deviation from which leads to obtaining different shades of the image.

Color images are applied to ceramic tiles by offset printing or decalomania, for example, see copyright certificate SU 92983. However, the basis for applying the image is not a durable material and is destroyed by mechanical factors, the image on the ceramic dims when exposed to sunlight.

The fired images can be applied to ceramic products by means of sliding decalcomania. After drawing, the product is re-fired to fix the decalcomania in the glaze. This method allows you to perform multi-color finishes, however, it slows down the process to a certain extent and is expensive. In addition, finishing by means of sliding decalcomania does not allow after its implementation to apply glaze, which would give the pattern resistance to mechanical damage due to friction.

DE 3446175 discloses a method and apparatus for manufacturing decorated ceramic elements, in which case the substance used for finishing is applied to a compression membrane. Then, between the pressing membrane and the first part of the mold, a tight connection is created along the edge, as a result of which the substance used for finishing is transferred to the first part of the mold. The pressing membrane is then removed, and a filling chamber is formed between the first part of the mold and the second part of the mold, from which air is evacuated and which is then filled with the ceramic material composition. The composition is subjected to final pressing to form the element onto which the substance used for decoration is transferred.

Closest to the claimed is a method of obtaining images on the surface of the product, including obtaining an image on an intermediate, in particular, on a paper basis, transferring the image to the surface of the product, high-temperature firing of the product in a furnace with a printed image (see patent GB 1120486 for ceramic decalcomania).

However, at present there are no high-performance technologies that allow obtaining high-strength color images on metal surfaces that are not susceptible to destruction and corrosion.

The creators of the present invention had the task of satisfying the need to create strong and durable, simple, low-cost decorative products with color images, photographs, inscriptions, drawings that are not subject to time and atmospheric factors.

The technical result that is achieved by the implementation of the invention is to increase the durability of the images obtained, simplify and reduce the cost of the technological process for their production, as well as to improve the quality of the image to obtain its various shades.

The technical result is achieved due to the fact that in the method of obtaining images on the surface of the product, including obtaining an image on an intermediate basis, transferring the image to the surface of the product, high-temperature firing of the product with the printed image in the furnace, a titanium sheet is used as the image transfer product, while Before applying the image, the titanium sheet is subjected to high-temperature oxidative firing at a temperature of 890-1020 ° C to form a uniform the thickness of the titanium oxide layer is maintained at this temperature for 15-90 minutes, while the temperature of the oxidative firing is selected depending on the desired color shade of the oxide layer, and the exposure time is dependent on its required thickness, the image is transferred onto the surface of the obtained oxide layer titanium after cooling, and re-firing the product with the printed image is carried out at a temperature of 550 ± 15 ° C.

The technical result is enhanced due to the fact that the surface of the titanium sheet before oxidizing firing is ground with corundum grain, the diameter of which is not more than 0.01 mm, the surface of the titanium sheet after grinding is cleaned with a soap solution brush and degreased, the surface of the titanium sheet after degreasing is wiped with dry lining sand .

The technical result is also enhanced due to the fact that for high-temperature oxidative firing use a shaft type furnace with four-sided heating, in which the heating elements are located in the walls of the chamber, equipped with a top cover.

After oxidative firing, the titanium sheet is wiped with lining sand to remove irregularities in the oxide layer that can damage the decal film during image transfer.

The image is transferred to the surface of the titanium oxide layer on a titanium sheet by the method of sliding decalcomania.

A titanium sheet with an image deposited on a titanium oxide layer is placed on the bottom of the furnace.

The essence of the method of obtaining images on the surface of titanium products is as follows.

All metals used in advertising, printing and photography are relatively short-lived during exposure and require special storage conditions: they are destroyed by humidity, UV rays and temperature changes, be it photography, photo printing, zincography based on Ag, Al, Pb, CrNi, CrCo at temperature printing from 20 ° to 120 ° C.

The technology for creating a high-temperature oxide film on a titanium sheet allows the use of a titanium sheet as a basis for subsequent transfer of the image when it is re-fired with a decal sheet deposited on the oxide layer of the titanium sheet. The basis is the oxidizing firing at a temperature of 890 ° -1020 ° C on the surface of a titanium sheet uniform in thickness of 0.002-0.007 mm, depending on the duration of firing of a layer of titanium oxide TiO 2 (see table 1). Uniform heating in air inevitably leads to the appearance of an oxide layer on the surface when the heating temperature passes beyond the heat resistance threshold of this material. In the course of the experiments, the effectiveness of the method is confirmed. Used titanium of various grades. In particular, as a non-limiting example of the invention, a VT1-0 grade titanium sheet was used with a heat resistance threshold of 890 ° C. The resulting oxide film is strong - of the order of 40 Brin - and fine-grained - the grain diameter of 0.2-0.5 microns, uniform in thickness. Removal from the sheet of this film is possible only with a power tool using nozzles with a diamond-corundum coating. Depending on the temperature of oxidative firing and the time of exposure to this temperature (exposure), not only the thickness but also the color and resistance of the oxide layer is different (see table 2). In the course of numerous experiments, a gamut of colors of the oxide layer for titanium of various grades was revealed. For titanium grade VT 1-0 domestic production, it extends from cold blue-gray (under exposure to 890 ° C, exposure 20 minutes) to light gray white (oxidative firing at 940-950 ° C, exposure 20 minutes ) It was found that the surface quality of the oxide layer of the sheet is determined by the speed and uniformity of heating inside the furnace chamber.

The method is as follows.

The surface of a titanium sheet, for example, grade VT 1-0, is sanded with corundum grain with a diameter of not more than 0.01 mm before oxidation; the depth of the metal surface that occurs during grinding allows the oxide layer to be more durable. After grinding, the surface of the titanium sheet is thoroughly cleaned with a brush with a soapy solution and degreased with acetone or mineral spirit or another solvent. Then, the surface of the titanium sheet was wiped with dry lining sand to remove the last traces of solvent or stains from water. It is noted that only a clean, uniformly matte titanium sheet will give the same uniform oxide layer in color and composition.

For high-temperature oxidative firing, a shaft-type furnace with four-sided heating elements located in the chamber walls was used, the chamber lid opens upward. Used resistance electric furnace ТК.90-1300.4.Ш.1.Ф-2008, volume 90 liters with a maximum temperature of 1300 ° C, heating elements made of Х23Ю5Т alloy (fechral), manufactured by the Moscow factory "Thermoceramics".

The baked sheet of titanium with an oxide layer obtained from baking was removed from the furnace without leaving grease stains, again wiped with lining sand to remove all roughnesses and unstable surfaces of the oxide layer that could damage the decal film during image transfer. The titanium sheet is ready for drawing the image. Images were obtained on a special decal printer. A sheet of decal paper printed by a decal printer is with a gelatin layer with an image applied with decal paints that can withstand temperatures up to 930 ° C. Used low-temperature (550 ° C) varnish for glass (flux) Spray Tecnici company Baltea D.C. - producer Italy. There is a similar flux of domestic production. This varnish was coated on a sheet of decal paper and thoroughly dried for 1-2 days at room temperature 20 ° C. Alternatively, drying was used in a tunnel dryer at 50 ° C for 40 minutes. Then, the decal image was transferred by transferring the decal image from the wet paper onto the oxide layer of the titanium sheet moistened with water and thoroughly ironed.

A titanium sheet with an image deposited on the oxide layer was placed on the bottom of the furnace, which should be flat or equipped with a flap that prevents deformation of the sheet when heated. They closed the lid, making sure that the lining particles did not get on the image. Then, a second firing of the titanium sheet was carried out with a decal image deposited on the oxide layer. At the same time, the temperature was maintained at 550 ° C ± 15 ° C and held for 15 min (see table 2). The total firing time was 90-105 minutes. The dried product was subjected to mechanical strength tests.

As a result, an unexpectedly resistant mechanically durable high-contrast tinted image was obtained on a lightweight titanium base, resistant to any external factors.

The environmental friendliness of creating an oxide layer on a titanium sheet made it possible to carry out all the necessary experiments and obtain high-quality samples with a decal image

Tests have shown the undeniable advantages of decal obtained on the titanium oxide layer. The image on the titanium sheet is high strength and plastic. Titanium sheets from 0.6 mm and more are ideal carriers of photo images, graphics - everything that a decal printer can print on decal paper.

Titanium sheets make the image obtained on the oxide layer at a temperature not higher than 550 ° C durable, practically timeless. Unlike all inkjet printers, even with UV protective varnish layers, the image on the oxide layer of the titanium sheet does not crack, does not become cloudy, does not fade, does not degrade and is not affected by fungus and corrosion

Decal paints, proven by the thousand-year history of porcelain, are switching to a titanium carrier - light, solid, durable, flexible, heat-resistant. The need for such a carrier for museums can not be said specifically. Funds of rare graphics and photographs can be protected by creating copies on titanium - durable and easy to move, exposure to the sun, at any humidity, in the absence of glass. The combination of price-quality parameters with the cost of creating guarantees insurance and investment attractiveness, because each sheet is individual in its own way and is guaranteed against forging by its micro-grinding of grinding at the base of the oxide layer and emerging microdefects when baking the image.

A titanium sheet can be a carrier of high-quality author's photographs, and the durability and lightness of the carrier material, the impossibility of easy copying, i.e. copyright protection determined by image acquisition technology.

The following are experimental data on the determination of the optimal oxidation conditions for a titanium sheet and for decal sintering to an oxide coating of titanium.

Figure 00000001

table 2 Decal baking modes No. p / p Grade Ti Sheet Ti sheet thickness Dial time to t ° exposure t ° exposure Exposure time Power consumption for all firing Notes one VT 1-0 0.8 mm 180 min 560 ° 15 minutes 8 kWh Preheat too long, color distortion 2 VT 1-0 0.8 mm 90 min 542 ° -553 ° 15 minutes 6 kWh Optimum shutter speed, good light transmission 3 VT 1-0 2.5 mm 100 min 548 ° -550 ° 15 minutes 7 kWh Can make t ° exposure even lower four VT 1-0 2.5 mm 115 minutes 530 ° -527 ° 15 minutes 6.4 kWh Optimum mode for 2.5 mm sheet 5 VT 1-0 5 mm 80 min 527 ° -531 ° 15 minutes 5 kWh The decal color is whitish, you need to raise the firing temperature 6 VT 1-0 5 mm 90 min 560 ° -561 ° 20 minutes 7 kWh The optimum mode for a sheet of 5 mm

Claims (8)

1. The method of obtaining images on the surface of the product, including obtaining an image on an intermediate basis, transferring the image to the surface of the product, high-temperature firing of the product with the printed image in the furnace, characterized in that a titanium sheet is used as the image transferring product, before the image is applied, the titanium sheet subjected to high-temperature oxidative firing at a temperature of 890-1020 ° C to form a uniform thickness layer of titanium oxide on its surface; and this temperature for 15-90 min, the temperature of the oxidative firing is selected depending on the desired color shade of the oxide layer, and the exposure time is depending on its required thickness, the image is transferred onto the surface of the obtained titanium oxide layer after it is cooled, and the high-temperature is repeated firing the product with the printed image is carried out at a temperature of 550 ± 15 ° C.
2. The method according to claim 1, characterized in that the surface of the titanium sheet before oxidative firing is ground with corundum grain, the diameter of which is not more than 0.01 mm
3. The method according to claim 2, characterized in that the surface of the titanium sheet after grinding is cleaned with a brush with a soap solution and degreased.
4. The method according to claim 3, characterized in that the surface of the titanium sheet after degreasing is wiped with dry lining sand to ensure a clean, uniformly matte surface.
5. The method according to claim 1, characterized in that for high-temperature firing, a shaft-type furnace with four-sided heating is used, in which the heating elements are located in the walls of the chamber equipped with a top cover.
6. The method according to claim 1 or 4, characterized in that after oxidative firing, the titanium sheet is wiped with lining sand to remove irregularities in the oxide layer that can damage the decal film during image transfer.
7. The method according to claim 1, characterized in that the image is transferred to the surface of the titanium sheet by the method of sliding decalcomania.
8. The method according to claim 1, characterized in that the titanium sheet with the image deposited on the oxide layer is placed for repeated high-temperature firing at the bottom of the furnace.
RU2012131921/28A 2012-07-26 2012-07-26 Method of production of image on surface of titanium products RU2500543C1 (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2595537C1 (en) * 2015-03-23 2016-08-27 Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский национальный исследовательский технический университет им. А.Н. Туполева-КАИ" (КНИТУ-КАИ) Method of transferring images from transfer film to metal products of solid structure by electro-vacuum treatment

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1120486A (en) * 1965-09-13 1968-07-17 Commercial Decal Inc Ceramic decalcomanias
WO2006016223A1 (en) * 2004-08-02 2006-02-16 Sergio Miotto Method and press for simultaneously forming and decorating ceramic articles
US20100021695A1 (en) * 2006-12-27 2010-01-28 Susumu Naoyuki Engraved plate and substrate with conductor layer pattern using the same
RU2405680C1 (en) * 2009-10-21 2010-12-10 Оксана Владимировна Семенова Method of producing complex-shape metal identification signs wherein shape of image made thereon mates that of identification sign edge-to-edge

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1120486A (en) * 1965-09-13 1968-07-17 Commercial Decal Inc Ceramic decalcomanias
WO2006016223A1 (en) * 2004-08-02 2006-02-16 Sergio Miotto Method and press for simultaneously forming and decorating ceramic articles
US20100021695A1 (en) * 2006-12-27 2010-01-28 Susumu Naoyuki Engraved plate and substrate with conductor layer pattern using the same
RU2405680C1 (en) * 2009-10-21 2010-12-10 Оксана Владимировна Семенова Method of producing complex-shape metal identification signs wherein shape of image made thereon mates that of identification sign edge-to-edge

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2595537C1 (en) * 2015-03-23 2016-08-27 Федеральное государственное бюджетное образовательное учреждение высшего образования "Казанский национальный исследовательский технический университет им. А.Н. Туполева-КАИ" (КНИТУ-КАИ) Method of transferring images from transfer film to metal products of solid structure by electro-vacuum treatment

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Effective date: 20150727