LED luminaire structure parts processing

(I) LED lighting Material forming, processing technology

1、LED lights Forging, Pressing, Casting
(1) LED Lights Forging: commonly known as "iron"
(2) LED Lights Machine pressing: stamping, spinning, extrusion
LED Lights Stamping: the use of pressure machinery and with the corresponding mold to create the required product process. Divided into cutting, drop, forming, stretching, flying edge and several other processes. Main production equipment: shearing machine, bending machine, punching machine, hydraulic press, etc.
LED Lights Spinning: the use of material extension, through the spinning machine with the corresponding mold and the support of the workers technology to achieve the production of products process. Mainly used for spinning reflector and lamp cup. Main production equipment: round edge machine, spinning machine, edge cutting machine, etc.
LED Lights Extrusion: the process of using the elongation of the material, through the extrusion machine and equipped with a shaped die, pressed into the products we need. This process is widely used in the manufacture of aluminum profiles, steel pipes, and plastic pipe fittings. Main equipment: Extruder.

(3) LED Lights Forging: sand casting, precision casting (dewaxing mold), die casting sand casting: sand to make the cavity for pouring so as to get the casting process.
Precision casting: use wax to make the same molten mold as the product; repeatedly dip the molten mold in paint and sprinkle sand; then melt away the internal molten mold to obtain the cavity; bake the shell and pour the required metal material; clear the sand after de-waxing, so as to obtain a high-precision finished product.
Led Lights Die casting: molten gold liquid is injected into the pressure chamber to fill the cavity of the steel mold at high speed, and then alloy liquid is solidified under pressure to form the casting repair casting method.
Die casting is divided into hot chamber die casting and cold chamber die casting. Hot chamber die casting: high degree of automation, high efficiency, poor product resistance to high temperature, short cooling time, used for zinc alloy die casting. Cold chamber die-casting: more manual operation procedures, lower efficiency, good product heat resistance, long cooling time, used for aluminum alloy die-casting. Production equipment: die-casting machine.

2、LED Lights Machining
Product parts directly from the material processing production process. The main production equipment are lathe, milling machine, drilling machine, CNC lathe (NC), machining center (CNC), etc.

3、LED Lights Injection Molding
This production process is the same as die-casting, only in the mold process and processing temperature differences. Commonly used materials are: ABS, PBT, PC and other plastics, production equipment: injection molding machine.

4、LED Lights Extrusion

In the plastic processing is also known as extrusion molding or extrusion, in the rubber processing is also known as press out. It is a processing method in which the material is plasticized by heat while being pushed forward by the screw through the extruder barrel and the screw, and is continuously extruded through the head of the die to make various cross-sectional products or semi-products. Production equipment: extruder.

(II) LED Lights Surface treatment

The surface treatment of lighting products are mainly polishing, spraying and plating

1, LED Lights Polishing: motor electric grinding wheel, sisal wheel, cloth wheel, a process of shaping the surface of the workpiece. Mainly for die casting, stamping parts, spinning parts of the surface, generally as the front process of electroplating. Can also be used as a material surface effect treatment (such as sunflower)

2、LED Lights Spraying

(1), the principle / advantages.
Work electrostatic spraying gun or spray disc, spray cup partly connected to the negative pole, the workpiece is connected to the positive pole and grounded, under the action of high voltage electrostatic generator, the gun (or spray disc, spray cup) between the end of the work and the formation of an electrostatic field. When the voltage is high enough, the area near the end of the gun-shaped air ionization zone. Most of the resins and pigments in the paint are composed of polymeric organic compounds, which mostly become conductive dielectrics. The paint is sprayed out by spraying intermediate atomization, and the atomized paint particles are charged by the contact when they pass through the pole needle of the gun or the edge of the spray tray or spray cup. These negatively charged paint particles under the action of electrostatic field, to the positive polarity of the work surface movement, and was learned to accumulate on the work surface to form a uniform coating film.

(2), Process
1, Surface treatment: mainly degreasing, rust removal, the workpiece surface clean.
2、Surface film treatment: phosphate skinning is a corrosion reaction, the corrosive ingredients stay on the metal surface, with clever methods to use corrosion products into a skin film.
3, Drying: to remove the water on the work after the treatment.
4, Spraying: in the high-voltage electrostatic field, the powder spray gun connected to the negative pole, the workpiece grounded (positive) constitute back away, the powder with the help of compressed air from the spray gun that has a negative charge, according to the principle of opposites attract spraying to the work.
5, curing: after spraying the work, sent into the 180-200 degrees Celsius oven heating, so that the powder curing.
6, Inspection: check the workpiece coating, where there are defects such as missed spraying, bruising, needle bubbles, etc., should be reworked and repainted.

(3), Application: electrostatic spraying of the surface of the sprayed workpiece paint layer of its uniformity, gloss and adhesion are better than ordinary manual spray paint. At the same time electrostatic spraying whether it is ordinary spray paint, oil-based and magnetic blending paint, perchloroethylene paint, amino resin paint, epoxy resin paint, etc. can be sprayed, simple operation, and than the general air spray can save about 50% of no paint.

3、Electroplating.
It is the process of using the principle of electrolysis to plate a thin layer of other metals or alloys on the surface of certain metals. The cations of the electric metal are reduced on the metal surface to form a plating layer. In order to exclude other cations plating, plating metal to do the anode was oxidized into cations into the plating solution; to be plated metal products to do the cathode, plating gold interference, and make the plating uniform, solid, need to use a solution containing plating metal cations to do plating solution, in order to keep the concentration of plating metal cations unchanged. The purpose of electroplating is to plating metal coating on the substrate, change the surface properties or size of the substrate. Electroplating increases the corrosion resistance of metals, increases hardness, prevents abrasion, improves electrical conductivity, lubrication, heat resistance, and surface aesthetics. Aluminum surface anodizing; the process of using aluminum as an anode in an electrolyte solution to form aluminum oxide on its surface using electrolysis is called aluminum anodizing.