Method of veneering metal product

Abstract

FIELD: construction.SUBSTANCE: invention relates to the decoration of metal products with wood veneer. A method of veneering metal products consists in the fact that a metal product is taken as the basis of the design, the surface of which is cleaned and polished with a coarse abrasive, after which the surfaces of the metal base and the prepared veneer of the required size are treated with a solvent to remove dirt, grease stains and resin, then adhesive is applied to both prepared surfaces in a thin, even layer and kept until completely dry for at least 24 hours, after which the adhesive is re-applied in a similar manner only to the surface of the veneer with a holding time of 10-15 minutes, the metal base is heated to a temperature of 70-80 °C and the veneer is bonded to the product using pressure, dried for at least 24 hours, the unevenness of the protruding edges of the veneer is trimmed, the surface is sanded and the final finishing of the entire surface is performed.EFFECT: strength and simplification of the manufacture of a structure decorated with natural wood, having the rigidity of a metal product, and the possibility of its use in conditions of high requirements for strength and fire safety.1 cl

Description

[0001] The invention relates to the field of construction, namely to decorating a metal product with wood veneer.

[0002] The technical solution allows for a complete, unified structure with the strength parameters of the metal used, but with the appearance and tactile perception of natural wood.

[0003] A method for veneering forged products is known from the prior art: Patent RU 2 607 538 C1, IPC B44C 3 / 00, registration date: 12 / 29 / 2016.

[0004] The essence of the known method is gluing veneer to the treated and filled surface of a forged product. The technical result of the known method is possible only when using a forged (cast iron) product as a base, which has a solid, monolithic structure that is resistant to vibration and allows for the adhesion of the filler layer and the wood veneer glued to it.

[0005] The known method is not intended for and is not applicable to use on metal (aluminum, stainless steel) products, such as hollow thin-walled metal tubes (square / round cross-section) used as supports and railings for internal and external fences, stairs, interior posts, furniture legs, handrails, rods; flat sheets of metal used in partitions, metal doors, etc., in structures subject to vibration and temperature influences.

[0006] A method for treating a surface with an abrasive (sandpaper), including an abrasive with a large grinding grain - a large abrasive (Abrasive materials: https: / / ru.wikipedia.org / wiki / Абразивные_материалы_и_абразивная_обработ?ysclid=mp7u1g9tu9599661182

[0007] Coarse-grained sandpaper: https: / / dzen.ru / a / W4fEKjl9QwCp8RLL?ysclid=mp7wb6s540980518811)

[0008] The closest analogue to the claimed method is not known.

[0009] The essence of the claimed method is veneering a metal product, which includes the preparation of the metal product, consisting of cleaning and grinding the surface followed by treatment with a solvent, treatment with a solvent of the inner surface of the veneer prepared to the size of the product, simultaneous application of an adhesive layer to both prepared surfaces and its curing, gluing the veneer to the product by tight pressing, drying the finished product with subsequent trimming / correction of the contours.

[0010] The difference of the declared method is in the treatment of the surface of the metal product with a large (coarse-grained) abrasive, providing rough processing before the moment of treating the cleaned surface with a solvent (the cleaned surface does not require puttying and sanding), applying glue in two stages with the first adhesive layer being kept on both surfaces to be glued until completely dry for at least 24 hours, and the second layer only on the inner surface of the prepared veneer with a holding time of 10-15 minutes. and gluing the veneer onto a metal product heated to a temperature of 70-80 ° C.

[0011] The technical result of the claimed method is the strength and simplification of the manufacture of a structure decorated with natural wood, having rigidity due to the integrity of the metal product and the possibility of its use in conditions of increased requirements for strength and fire safety (in contrast to similar products made of wood, or wood-metal structures connected in another way), saving wood.

[0012] The claimed technical result is achieved through a method of veneering a metal product, which consists of the following:

[0013] The design is based on a metal product (aluminum, stainless steel), the surface of which is cleaned and polished with a coarse abrasive, after which the surfaces of the metal base and the inner side of the wood veneer, prepared to the size of the decorated surface of the metal product, are treated with a solvent to remove dirt, grease stains and resin, then glue is applied to both prepared surfaces in a thin, even layer and left to dry completely for at least 24 hours, after which glue is re-applied in a similar way only to the inner surface of the veneer with a holding time of 10-15 minutes, the metal base is heated to a temperature of 70-80 ° C and the veneer is glued to the product by pressing firmly, dried for at least 24 hours, the unevenness of the protruding edges of the veneer is cut off, the veneer is sanded and the final processing of the entire surface is carried out.

[0014] After finishing, the veneered product can be additionally coated with a protective varnish of the desired shade.

[0015] Coarse abrasive is a coarse-grained (rough) abrasive material in the range from medium to the largest grinding grain size.

[0016] For surface treatment, any brand of solvent intended for the specified purposes is used; White Spirit or Solvent 646 can be used.

[0017] Any common universal or two-component adhesive based on epoxy, polyurethane or rubber, which includes metal and wood in the composition of the materials to be bonded, can be used for gluing.

[0018] The claimed method is carried out as follows:

[0019] Any metal (aluminum, stainless steel) product (post, railing, handrails, furniture legs, metal doors, drawers, panels) is used as the base of the structure. The surface of the product, in order to create adhesive strength at the point of gluing the veneer, is cleaned and sanded with a coarse (coarse-grained) abrasive, which ensures rough processing of the metal base (use sandpaper in case of the manual method, and a disc abrasive in case of the mechanical one). Wood veneer is cut to the size of the surface to be decorated. For example, to decorate all the faces of a square metal tube with veneer, either a single rectangle corresponding to the total area of ​​​​the four faces of the tube is cut out, or four veneer blanks, cut to the size of each face separately (glued end to end), and for a round tube - a rectangle corresponding to the size of the circle, capable of covering the entire area of ​​​​the tube to be decorated.Next, the surfaces of the metal base and the inner surface of the prepared wood veneer are treated with a solvent to remove dirt, grease stains, and resin. To do this, apply the solvent to a sponge and thoroughly wipe the inner surface of the veneer and the surface of the metal piece to be decorated. Next, apply a thin, even layer of adhesive using a roller or brush to the treated surface of the metal base and the treated inner surface of the veneer. Both surfaces are left to dry completely, for at least 24 hours. Then, apply the same adhesive again to the inner surface of the veneer and let it sit for 10-15 minutes until it partially dries. The surface of the metal base to be decorated is heated to 70-80°C using a heat gun or other safe alternative, and the two surfaces are carefully pressed together.Firm pressing can be achieved by rolling the veneer with a roller and applying firm pressure. After gluing, the piece is left to dry for at least 24 hours until the adhesive has completely dried. Once dry, the veneered surface is finished by trimming any uneven protruding edges and sanding.

[0020] Since the materials being bonded have significant differences in structure and thermal expansion coefficients, thermal application to the surface of the metal treated with a coarse abrasive ensures deep penetration of the adhesive into the adhesive surface of the metal base while maintaining the integrity of the adhesive layer. When the materials are joined, heating completely mixes the adhesive layers.

[0021] This creates a uniform appearance across the bonded surfaces. With proper pressure applied during gluing, and thanks to the thermal bonding method, after drying, the product forms a single, monolithic structure with the visual and tactile feel of natural wood.

[0022] Thus, the implementation of the claimed method makes it possible to obtain durable structures with the aesthetic appearance and tactile perception of natural wood, which are capable of meeting increased requirements for static and dynamic loads, as well as fire safety requirements, for example, including use as supporting elements of stairs and railings on stairways and stairwells on evacuation routes without restrictions, where the use of wooden structures is not permitted.

[0023] By applying the claimed method, the result can be used in the creation of both indoor and outdoor structures, in various atmospheric conditions, under temperature fluctuations, and in structures subject to vibration loads. The claimed method simplifies the creation of decorative items and allows for the conservation of wood materials.

[0024] The declared method of veneering a metal product has not been used before and is unknown, is not obvious, has the ability to be industrially applicable, and is feasible in both limited and serial production.

Claims

A method for veneering a metal product, which consists in the fact that a metal product is taken as a base, the surface of which is cleaned and then treated with a solvent, veneer is prepared to the size of the metal product, the inner surface of which is similarly treated with a solvent, then a layer of glue is applied to both surfaces with subsequent curing and the veneer is glued to the product by pressing force, after the glue has dried, the uneven edges of the veneer are trimmed, the contour is adjusted and the veneer is sanded, characterized in that the surface treatment of the metal product before treating it with a solvent includes grinding with a coarse abrasive to create adhesion, the glue is applied in two stages with the curing of the applied first adhesive layer on both surfaces to be glued until completely dry for at least 24 hours, the second layer is applied to the surface of the veneer with a curing of 10-15 minutes, and the veneer is glued to a hot metal product, heated to a temperature of 70-80 ° C.