Method for producing a fitting, fitting, domestic appliance and item of furniture

Abstract

A method of producing a fitting for domestic appliances or furniture. The fitting including a plurality of components connected to one another. The method includes the steps of providing the plurality of components by one or more of stamping and bending metal sheets, assembling the plurality of components to form a fitting, coating the fitting, at least in sections, by applying at least one coating, one or both of drying and burning-in the coating, treating a surface of plurality of components abrasively before the coating of the fitting, thereby setting a surface roughness of the plurality of components, and cleaning the surface of the plurality of components.

We claim: 
     
         1 . A method of producing a fitting for domestic appliances or furniture, the fitting including a plurality of components connected to one another, the method comprising the following steps:
 providing the plurality of components by one or more of stamping and bending metal sheets:   assembling the plurality of components to form a fitting:   coating the fitting, at least in sections, by applying at least one coating:   one or both of drying and burning-in the coating;   treating a surface of the plurality of components abrasively before the coating of the fitting, thereby setting a surface roughness of the plurality of components; and   cleaning the surface of the plurality of components one of before, during, and after the step of abrasively treating the surface of the plurality of components.   
     
     
         2 . The method according to  claim 1 , further comprising the step of treating the surface of one of the assembled fitting and the individual components and by applying at least one porous basecoat. 
     
     
         3 . The method according to  claim 2 , wherein the porous basecoat comprises at least one hard material coating. 
     
     
         4 . The method according to  claim 1 , wherein the abrasive treatment is performed by abrasive blasting using one or more of a mineral and organic blasting medium. 
     
     
         5 . The method according to  claim 4 , wherein the cleaning of the plurality of components comprises at least removing the blasting medium by one of suctioning and flushing. 
     
     
         6 . The method according to  claim 1 , wherein the cleaning of the plurality of components comprises one or more of alkaline cleaning and ultrasonic cleaning. 
     
     
         7 . The method according to  claim 1 , wherein the coating includes at least one of a polymer, polymer derivative, and a polymer mixture, selected from a group consisting of:
 fluoropolymers;   polyether ketones; and   inorganic-organic hybrid polymers.   
     
     
         8 . The method according to  claim 1 , wherein the coating includes one of a polymer and polymer derivative selected from a group consisting of:
 fluoropolymers;   polyether ketones; and   inorganic-organic hybrid polymers.   
     
     
         9 . The method according to  claim 1 , wherein the fitting is a pullout guide, including a guide rail, on which at least one of a middle rail and a slide rail is mounted and configured to be movable via roller bodies, the roller bodies being guided along runways on one or more of the rails, and further comprising a step of masking of a part of a surface of the pullout guide being performed before the abrasive treatment step to set the surface roughness. 
     
     
         10 . The method according to  claim 9 , wherein the masking includes a masking on the runways that is performed by covering the runways by applying a wax-like substance. 
     
     
         11 . The method according to  claim 1 , wherein after one or both of the drying and the burning-in of the coating, a tempering of the coated fitting is performed. 
     
     
         12 . The method according to  claim 11 , wherein the tempering is performed in an oxygen-poor atmosphere. 
     
     
         13 . The method according to  claim 12 , wherein the tempering the oxygen-rich atmosphere is performed at at least 500° C. 
     
     
         14 . The method according to  claim 1 , wherein the cleaning step is performed using one of ultrasound and plasma. 
     
     
         15 . The method according to  claim 1 , wherein the treatment of the surface is performed by brushes. 
     
     
         16 . The method according to  claim 9 , wherein the cleaning step includes using brushes and which cleaning step is performed at least on the outer surfaces of the rails of a pullout guide. 
     
     
         17 . The method according to  claim 1 , wherein an average roughness depth of the fitting after the abrasive treatment of the surface is greater than 1.85 μm. 
     
     
         18 . A fitting for furniture, the fitting including a coating applied according to  claim 1 . 
     
     
         19 . A domestic appliance including a fitting according to claim  18 . 
     
     
         20 . An item of furniture including a fitting according to  claim 18 . 
     
     
         21 . The method according to  claim 7 , wherein the fluoropolymers include one or more of perfluoroalkoxyalkanes and polytetra fluoroethylene, and the polyether ketones include polyether ether ketones. 
     
     
         22 . The method according to  claim 8 , wherein the fluoropolymers include one or more of perfluoroalkoxyalkanes and polytetra fluoroethylene, and the polyether ketones include polyether ether ketones. 
     
     
         23 . The method according to  claim 12 , wherein the tempering in the oxygen-rich atmosphere is performed at approximately 650-750 ° C. 
     
     
         24 . The method according to  claim 1 , wherein an average roughness depth of the fitting after the abrasive treatment of the surface is greater than 2.0 μm. 
     
     
         25 . The method according to  claim 11 , wherein the tempering is performed in a nitrogen-rich atmosphere.