Lamps and lanterns of accessories process
Lamps and lanterns of the designer must not only have good creative design, good product performance skills, hand-painted and computer aided design is the essential means of U c, lamps and lanterns design also, pay attention to the process of light fittings, Chinese porcelain repository below small make up is to share light fittings electroplating process, stamping process, casting process and plastic molding process.
1, plating process in terms of plastic parts, and our common plastics including thermoplastic and thermosetting plastic, both kinds of plastic plating. But need to make different activation treatment, at the same time, the surface quality of late have bigger difference, generally only electroplating ABS material of the plastic pieces, sometimes with different plastic material to the different plating activation request to double color injection molding, and then the plating processing, such as a kind of plastic can be activated, while another cannot be activated partial plastic plating effect, can achieve some designers design requirements. Through the general process after plating on ABs material plastic plating generally is made up of several layers. Common after plating coating are mainly copper, nickel, chromium 3 kinds of metal deposits, under ideal conditions, the layers of common total thickness of 0.02 mm or so, but in our actual production, due to the thickness of the usual cause of base material and surface quality will do a lot larger than this value, however large electroplating factory can better meet such requirement.
2, stamping process stamping by press and die for sheet, strip, pipe and profiles, such as outside force, to produce plastic deformation or separation, to obtain the required shape and size of the workpiece forming method (stamping). Stamping and forging belong to plastic processing (or pressure processing), called the forging press. Stamping of billet is mainly hot rolling and cold rolling steel plate and steel belt. Steel all over the world, there are 60% ~ 70% is plank, most of which is made by stamping products. The suction in particular, Taiwan base of lamps and lanterns, light plate, light cup, bend, lamps shell, motor shell, electric iron core silicon steel sheet are stamping processing, etc. Instruments and meters, household lighting, outdoor lamps and lanterns, office commercial lighting and home decoration ware lamp and other products, also have a large number of stamping parts. Compared with the castings, forgings, pressing with a thin, uniform, the characteristics of light and strong. Stamping can make other methods are difficult to manufacture with rib stiffener, flanging, ups and downs, or artifacts. Because use precision mould, workpiece precision can reach micron grade, and repeat precision is high, the specification is consistent, can punch a hole nest, convex sets, etc. Cold stamping generally no longer by machining, or only need a small amount of machining. Hot stamping precision and surface state is lower than the cold stamping parts, but it's still better than the castings, forgings, and cutting processing capacity. Stamping is efficient production methods, the use of complex mode, especially the multi-station progressive die, it can be finished in a pressure on multichannel stamping process, realize the pick-up uncoiling, leveling, cutting to the forming and finishing of automatic production. High production efficiency, good working conditions, low production cost, general can produce hundreds per minute. Stamping press process classification, can be divided into separation process and forming process two kinds big. Separation process is also called the blanking, and its purpose is to make from the sheet metal stamping parts along the contour line must be separated, and at the same time guarantee the quality requirements of the separation section. Forming process is designed to make sheet metal under the condition of not to break the billet occurred plastic deformation, made into the required shape and size of the workpiece.
3 need to carry on the processing of casting, casting process, when manufacturing mold machining allowance is given. Machining allowance allowance for short. Machining allowance shall be selected reasonably. Machining allowance is too large, not only waste metal, increase the machining work, sometimes thickened due to the cross section, hot day, the casting crystal material is bulky, and even cause shrinkage cavity or shrinkage. Machining allowance is too small, can't cut the casting machining surface all net, make the parts can not meet the requirements of precision and smooth finish. The size of the machining allowance and cast metal type, production condition and casting dimension and surface processing department and so on.
4, the plastic molding process of plastic molding process is a key link in the process of plastic processing. Will be in the form of various plastic (powder, granular materials, solution or dispersion) made from the shape of the products or parts is required. Forming method of as many as 30 kinds, the choice of it mainly depends on the type of plastic (thermoplastic or thermosetting), starting form the shape and size of the products and.
Commonly used methods for processing thermoplastic extrusion, injection molding, calendering, blow molding and thermoforming, etc. Processing commonly used thermosetting plastic moulding, transfer molding, also use injection molding. Laminating, molding and thermoforming is made of plastic forming on the plane. The plastic processing method, all can be used in rubber processing. In addition, there is in a liquid monomers or polymers as raw materials of casting, etc. In these methods, in order to extrusion and injection molding used most frequently, is also the most basic method of forming.