Aluminum casting why can be widely used in lighting, the reason is that: 1, casting to form more complex shapes, first by nc machining mold cavity to form a beautiful appearance, casting processing capacity or less and less and even sometimes don't need machining; 2, can design different wall thickness and structure to meet the requirements of the lamp is acted the role of the strength and function; 3, according to the different installation environment lighting we need all kinds of casting surface can be used for surface treatment, corrosion resistant ability is stronger in the outdoor environment; 4, the use of different casting process can not only adapt to small batch production, and can be suitable for mass production of castings, meet the demand of all kinds of lighting sales, so all kinds of castings, especially non-ferrous metal casting in the manufacture of lighting manufacturing industry especially outdoor lamps and lanterns is widely used.
Casting application classification: 1, from casting pattern classification: lighting is used most frequently in die casting, followed by sand casting, metal mold casting, there is a small amount of investment casting. 2, from casting material points: lighting is used most frequently in aluminum castings (including aluminum die casting, aluminum metal mold casting, sand casting), and then is zinc alloy casting (mostly die casting), copper alloy casting copper (copper die casting, sand casting, copper) investment castings, there is a small amount of steel and stainless steel casting, sand casting, investment casting).
Application examples:
1, street lights, advertising lights, square lamp, lamp parts outdoor wall lamp, steps, part projection lamp, lawn lamp shell and the lamp cover, most of them adopt aluminum die casting.
2, street, square lamp and pillars of connector, courtyard lamp shell, wall lamp connectors, most of them adopt aluminum metal mold casting or sand casting.
3. The lawn lamp, underwater lamp, lamp is mostly copper casting and stainless steel castings.
4. The interior of some wall lamp light back, the lamp holder ring, some of the complex shape bracket, connecting head, canopy cover, junction box, decorative component, shape framework of embedded lights, reflectors, outer garment of high-grade floor lamp, desk lamp, etc., were mostly aluminum, zinc die casting.
5. There are also some chandeliers due to reasons of threading, method can be applied to embedded pipe adopts the method of casting or die casting and application of some aluminum, zinc castings.
Lamp ACTS the role of the casting surface treatment: 1. Most of them adopt some of the leakage of aluminium, zinc casting blank or hit the surface of the sand, sometimes USES the chromizing process to increase corrosion resistance; Copper, steel castings, mainly adopts the surface of the blank, because the main structure of the role, in does not affect beautiful. Inside the lamp is used when copper pieces have passivation, steel casting sometimes USES the phosphating, all is in order to improve the corrosion resistance; Chromium, passivation and phosphate is also sometimes used for pretreatment of post-processing. 2. Exposed on the surface of the casting application in indoor lights for different materials, mainly adopts polishing, sand, adornment sex is anodized, powder spraying, paint surface treatment, electroplating and other more beautiful. 3. The exposed surface of outdoor lights when the aluminum die casting, mainly USES the spray, spray paint surface treatment. The surface of the copper and stainless steel castings Mainly adopting vibration polishing, light, sometimes to and other parts surface is consistent, also can use spray and spray paint surface treatment.
