When purchasing a chandelier, it mainly pays attention to detecting the adhesion of the surface of the chandelier, whether there is a bad phenomenon on the surface of the hardware accessory, and the safety of the inspection appliance. Chandelier quality safety hazards can easily cause personal injury to consumers. The purchase of chandelier should adhere to the safety first principle of purchase.
Chandelier product type. Chandelier by style can be divided into European candlestick chandeliers, crystal chandeliers, Chinese chandeliers, fashion chandeliers and other styles, European-style chandeliers generally use wrought iron chandeliers style, light bulbs and lamp holders are more use of candles and candlestick design, the product is very classical beauty; crystal chandeliers Many manufacturers use imitation crystals as production materials. The quality of raw materials is mostly made of high-tech materials. Most of the crystal chandeliers produced by brand manufacturers use domestic artificial crystals as the market materials. The products are luxurious in appearance and expensive; Chinese-style chandeliers, Most of the designs are classical in style and bright in style. Attention should be paid to the specification and style of the pendant lamp when purchasing.
Chandelier features. In the modern home decoration chandeliers are mostly used in bedroom and living room decoration, a wide range of products, generally by the number of chandeliers can be divided into single head chandeliers, long chandelier. When designing the living room chandelier, it should be noted that the product height design should not be less than 2.2 meters.
Chandelier purchase surface should pay attention to matters. After the chandelier is processed and molded, the surface has to be processed through electroplating, painting, and other processes. These several production processes play a key role in the surface quality of the product, and can be performed from the aspects of adhesion on the inspection surface, presence or absence of bad phenomena on the surface of the metal at the time of purchase. an examination. There is a small trick when checking the adhesion of the surface. Consumers can use the blade to draw 100 "1"-hole "know-letter" shapes and stick them with adhesive tape. If it can stick out, it means that the adhesion is not enough.
Chandelier hardware surface defects check. Check the hardware surface for defects such as blackening, rusting, scratching, lack of paint, paint dropout, paint leakage, flow paint, dirt, etc.; check whether the chandelier has a color difference with the chromatic aberration; check carefully Hardware parts have no deformation, burrs and so on.
The chandelier is checked for the original part of the pendant lamp. When we buy chandelier, we have to pay special attention to the quality of the electric parts of chandelier products. Many chandeliers are made of iron materials and have strong conductivity. Therefore, when purchasing chandelier, consumers should pay special attention to the safety of chandelier electric appliances. When you purchase, you should carefully check whether the wires are damaged, whether the lamp head is deformed, broken, or missing corners, whether the lamp tongues are skewed or loose, whether the positive and negative poles are close, whether the ground wire is loose or broken, and whether there is an additional wire at the outlet. Whether the lamp cap is tightened or not, and whether the size of the connector is appropriate or not.
Tips: Finally, Xiao Bian reminds consumers to purchase the chandelier when they can purchase the energy-saving lamp light source or the built-in chandelier. There is a chandelier that does not have a plating layer, and a chandelier with a plating layer is used for daily use. It is easily oxidized and dropped, affecting the appearance of the product.
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Aluminium foil is produced by rolling sheet ingots cast from molten billet aluminium, then re-rolling on sheet and foil rolling mills to the desired thickness, or by continuously casting and cold rolling. To maintain a constant thickness in aluminium foil production, beta radiation is passed through the foil to a sensor on the other side. If the intensity becomes too high, then the rollers adjust, increasing the thickness. If the intensities become too low and the foil has become too thick, the rollers apply more pressure, causing the foil to be made thinner.
The continuous casting method is much less energy intensive and has become the preferred process.For thicknesses below 0.025 mm (1 mil), two layers are usually put together for the final pass and afterwards separated which produces foil with one bright side and one matte side. The two sides in contact with each other are matte and the exterior sides become bright; this is done to reduce tearing, increase production rates, control thickness, and get around the need for a smaller diameter roller.
Some lubrication is needed during the rolling stages; otherwise, the foil surface can become marked with a herringbone pattern. These lubricants are sprayed on the foil surface before passing through the mill rolls. Kerosene based lubricants are commonly used, although oils approved for food contact must be used for foil intended for food packaging.
Aluminium becomes work hardened during the cold rolling process and is annealed for most purposes. The rolls of foil are heated until the degree of softness is reached, which may be up to 340 °C (644 °F) for 12 hours. During this heating, the lubricating oils are burned off, leaving a dry surface. Lubricant oils may not be completely burnt off for hard temper rolls, which can make subsequent coating or printing more difficult.
The rolls of aluminium foil are then slit on slitter rewinding machines into smaller rolls. Roll slitting and rewinding is an essential part of the finishing process.
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