Metal liquid molding processes and more, and it is difficult to precisely control bronze pieces, so casting quality is not stable enough. Compared with the forging of the same material, because the liquid forming tissue loose, coarse grains machine tool castings, internal easy to produce shrinkage, shrinkage, porosity and other defects. Its low mechanical properties. In addition, labor-intensive, poor conditions. Have excellent mechanical and physical properties, it can have a variety of strength, hardness, toughness overall performance, but also combines one or more special properties, such as abrasion resistance, high temperature and low temperature and corrosion resistance. Casting weight and size range is very wide, weighs only a few grams of the lightest and heaviest up to 400 tons, the thinnest wall thickness of only 0.5 mm casting process, the thickness can be more than 1 m, length may be a few millimeters to ten Jimmy castings, can meet the requirements of various industrial sectors. Classification mainly sand casting foundry and special casting two categories. 1 ordinary sand casting, the use of sand as a molding material, also known as sand casting, foundry, including wet sand, dry sand and chemical hardening sand three categories, but not all can be used for sand casting. Advantage of lower cost, because the use of the mold sand can be reused; drawback is time-consuming production mold, the mold itself can not be reused, must be destroyed after the finished product can be achieved. 1.1 sand (core) casting method: Wet sand type, self-hardening resin sand, water glass sand, dry and table dry, solid casting, vacuum molding. 1.2 sand core production method: is selected based on sand core size, shape, production volume and specific production conditions. In production, in general it can be divided into handmade core and core making machine. 2 special casting, press molding materials can be divided into natural mineral sand as the main form of special casting material (such as investment casting, mud casting, shell casting, vacuum casting, solid casting, ceramic casting, etc.) and metal as the main material of special casting mold (such as metal casting, pressure casting, continuous casting, low pressure casting, centrifugal casting, etc.) categories. Aluminum castings, castings, Chen Hua Machinery (Views) provided by the China Machinery Equipment Co., Ltd. Qingdao Chen. Qingdao Chen Hua Machinery Co., Ltd. (www.qdchenhua.com) is a professional "press, harbor bollards, adjustable multi-axis tapping drilling machine, CNC multi-axis drilling, gantry milling" of the company. Since its inception, we adhere to the "good faith, sound management" approach, the courage to participate in healthy competition in the market, so that the "Chen Hua machinery, Qingdao, Chen Hua" brand has a good reputation. We adhere to the "service first, customer first" principle, so Chen Hua Machinery won the trust of customers in all CNC machine tools, and establish a good corporate image. Special Note: This information is for reference only pictures and information, please contact us to obtain the most accurate information, thank you!