Many factors affect the quality of castings, the first is the casting of the design process. When the design, in addition to determining the casting geometry, size according to the working conditions of foreign iron and metal material properties must also be from the perspective of casting alloys and casting process design characteristics to consider the reasonableness of iron doors and windows, and that is a significant size effect solidification, shrinkage, stress and other problems, in order to avoid or reduce the casting segregation component, deformation, cracking and other defects. The second to have a reasonable casting process. Casting structure that is based on the weight and size, cast alloy and production conditions, select the appropriate sub-surface and shape, making the core method, a reasonable set of cast bars, cold iron, riser and pouring system. In order to ensure access to quality castings. The third is the casting quality of raw materials. Metal charge, quality refractories, fuel, flux, modifier and foundry sand, sand binders, coatings and other materials, sub-standard, will make casting porosity, pinholes, slag, sticky sand and other defects Iron Gate head impact appearance and internal quality casting, casting serious cause scrapped. The fourth is the process operation, to develop a reasonable process rules to enhance the skills of the workers, so that technical rules properly implemented. Casting a variety of classification methods: by its use of different metal materials into steel, cast iron, bronze pieces, cast aluminum, cast magnesium parts, pieces of cast zinc, cast titanium parts. And each class can be divided according to their chemical composition or casting microstructure further divided into different categories. Such as cast iron can be divided into gray iron castings, ductile iron castings, vermicular cast iron, malleable iron, alloy cast iron pieces; Iron Gate different mold wall molding method, can be divided into ordinary casting sand casting, metal castings , die casting, centrifugal casting, continuous casting parts, castings, ceramic castings, castings ESR, bi-metal castings. Among the most common application of sand casting, casting about 80% of the total production. The aluminum, magnesium, zinc and other nonferrous castings, mostly casting. . Casting very versatile, has been applied to the metal and the whole machinery and electronics industries, and its use is a growing trend. Specific use, construction, hardware, equipment, construction machinery and other large machinery, machine tools, shipbuilding, aerospace, automotive, motorcycle, electronics, computers, appliances, lighting and other industries, many of which are ordinary people all day contact, but do not know metal objects. Chen Hua Machinery Co., Ltd. Qingdao Since its inception, the construction of a large-scale chemical production equipment, the company is an alkali industry Casting a 3.2 m diameter special corrosion-resistant cast iron tower rings and 3.6 meters in diameter sieve special alloys (is the city's first ); manufacture of baking soda carbonation tower complete sets of equipment; the manufacture of large diameter pipe chemicals; for State Power Generation Co., Ltd. Fuzhou Jiangyin plant construction project to install a large trash rack. To produce ten tons of single port buffer grab straps, and access to national patents, products are sold to Taiwan and other places; galvanized towing tank has been used for port construction; building materials enterprises supporting a new brick mold; carving textile carding model and so on. Container Terminal with a wheel guard and towing tank Hom is the company's traditional products in Qingdao Qianwan Container Terminal QQCT three projects, Qingdao Harbor two renovation project, Qingdao Harbor small basin project, Rizhao Port revetment works Rizhao Westport Container Terminal and Grain Terminal works were designed using my bucket wheel guard and towing tank, were evaluated to obtain high-quality project. Wrought Iron Gate _ _ Chen Hua Chen machinery provided by the China Machinery Equipment Co., Ltd. Qingdao. Qingdao Hua Chen Machinery Co., Ltd. (www.qdchenhua.com) strong, credible, in Qingdao, Shandong CNC machine tool industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Chen Hua machinery and you hand into the brilliant, for a better future!