PPGI/PPGL(prepainted galvanized steel /prepainted galvalume steel )is also known as pre-coated steel,color coated steel, coil coated steel, color coated steel,pre pianted steel sheet,The PPGI steel coil/sheet made of cold-rolled steel sheet and galvanized steel sheet, subjected to surface pretreatment (degreasing, cleaning, chemical conversion treatment), coated in a continuous manner, and baked and cooled to form a product. Coated steel has light weight, beautiful appearance and good anti-corrosion performance, and can be directly processed.
Color coated steel coil is mainly divided into three parts: construction, household appliances and transportation. Building is generally used to build the roof, wall and door of industrial and commercial buildings such as steel structure workshop, airport,warehouse and freezer. Household appliances are used in the production of refrigerators and large air conditioning systems, freezers, toasters, furniture, etc. Transportation industry is mainly used for oil pan, automobile interior parts, etc.
PPGI is a product made of cold-rolled steel coil and (aluminum) Galvanized Steel Coil after surface chemical treatment, coating (roll coating) or composite organic film (PVC film, etc.), and then baking and curing. This product is produced by the manufacturer in coils on the continuous production line, so it is also called prepainted steel coil. It not only has the properties of high mechanical strength and easy forming of steel materials, but also has good decoration and corrosion resistance of coating materials.
Color Coated Steel Coil,Colour Coated Coil,PPGI Coil,PPGI Steel Coil,Prepainted Galvanized Steel Coil Shandong Guanzhou Iron and Steel Group Co., Ltd. , https://www.guanzhouiron.com
The modeling process is actually the solution process of the layout problem, which is also called the hierarchical solution process of the gear transmission system. According to the transmission ratio between the shafts, the design of the gear transmission is realized, and the design result of the right output shaft transmission system is obtained. The horizontal output symmetry copy of the right output shaft drive system results in the overall drive system design of the drive train containing the left output shaft.
Model establishment research and algorithm research have the same important position in solving the layout design problem of products, and the latter has more important significance in realizing the CAD system of complex mechanical product layout. This is because, although the current layout algorithms are widely studied, in the complex mechanical product nylon conveyor belt layout design problems, it is often impossible to make these layout algorithms get CAD applications due to the lack of support of suitable models. Given the complexity of the layout problem, a human-machine combination of the solution process is necessary.
The greatest advantage of the topological hierarchical CAD model used is that it can support the expression and decision making of complex layout structures, and the automatic layout algorithm alone cannot express these structural decisions. This is the difficulty of using automated layout algorithms (such as optimization algorithms) in multi-axis box layout CAD software.