Difficulties Aluminum welding aluminum and aluminum alloy aluminum alloy material easily oxidized. In the air, the aluminum oxide combined with easy to produce a dense aluminum oxide film (thickness of about 0.1-0.2μm), high melting point (about 2050 ℃) Earthquake instrument case, far more than the melting point of aluminum and aluminum alloys (about 600 ℃ or so). Alumina density 3.95-4.10g / cm3, aluminum is approximately 1.4 times the surface of the aluminum oxide film of easy absorption of moisture, welding, it hinders basic metal fusion Liaoning shockproof carrying case, easy to form pores , slag, incomplete fusion and other defects, performance degradation caused by welding. Aluminum is made of aluminum by adding some alloying elements, such as aluminum - copper alloy, aluminum - zinc - magnesium - copper based hard alloys. Aluminum is light, low cost, mechanical properties (even by force) characteristics, there is an aluminum alloy is easy to process and have a high degree of heat dissipation. Particular part of the vehicle engine is particularly suitable for an aluminum alloy material. As with most of the computer chassis is made of aluminum - copper alloy. Mainly on account of the heat. Because copper and aluminum mixed after extrusion manufactured, its thermal performance is quite good, even some high-end CPU cooling fan is the use of this material. High-tech products to improve its value determines the product carrier air box has a higher protection, external structure Air box: the more rigid multilayer plywood ABS posted outside the fire board nailed to wooden box, wooden box of each side the use of a certain thickness and strength of aluminum extrusions, each corner of the box is connected and fixed with high-strength metal alloy aluminum spherical corners and edges and plywood, the bottom of the box in combination with affordability and the ability to wear PU round made strong ; internal structure: the cabinet can be installed based on product characteristics partitions, the inside of the cabinet and the partition labeled relatively soft EVA material composite solid back of Jiangsu shockproof carrying case, the material has a lightweight, thermal insulation, shock, moisture, flame, antioxidant, the sealing function. Inside and outside the structure and materials determines the air box air box of fire, water, anti-shock, and easy maneuver filling completely, and the diversity of colors Firewood even more beautiful visually. Shenzhen Yu Electronics Co., Ltd. set many years of design experience, high-precision production equipment and excellent production process, the air box manufacturing areas have a high visibility, manufacturing of air box has the diversity of styles, box beautiful, safe reliable, easy maneuvering, excellent sealing, solid strong advantages. Our quality products and the integrity of the business philosophy of cooperation not only won the domestic customers of mouth beer products are also exported to Europe, the Middle East and other overseas markets. Liaoning Province Earthquake instrument case, Shin Hae packaging (certified), shockproof carrying case provided by Xiongxianshenhai packaging color Limited. Xiongxianshenhai packaging color Limited (www.shenhai6688.com) (www.shenhai6688.com) Hebei Baoding, plastic bags leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum to meet customer needs. Shin Hae leader in packaging with the staff warmly welcome all inquiries negotiations to create application-Packing better future.