In recent years, the vast demand at home and abroad and showed increasing trend of development, resulting in the current cast of stainless steel metal casting industry, especially the much-loved. Industry experts concluded that for two reasons: First of gray cast, with the continuous development of China's rising economic status and industry of casting, metal casting products increasingly exported to other countries, increasing overseas demand for directly stimulating the country increase product yield castings manufacturing enterprises. Second bronze pieces, high-quality win the world small castings, metal castings domestic product quality improvement is also increasing its demand for an important reason. Our metal castings industry is booming. Casting Casting reflect actual figure is the size, shape and pattern technical requirements, it is casting production, mainly based casting inspection and acceptance; Fig generally by casting casting casting manufacturers in product process development stage, according to the product drawings, product Drawing Basics adds draft angle, allowance, not cast out pattern holes, slots, and the size and other technical requirements, as foundry, castings inspection and acceptance of the product, or on customer requirements and product plans have sent along to the casting factory As a basis for product acceptance. Painting (1) in the casting indicated by a thick solid line in FIG casting contour; represents the shape of the part with a thin two-dot chain line; between the thick solid line and two-dot chain line denoted thin allowance value; in cross-section The figure represents allowance or not cast holes, slots, etc. with the grid lines. (2) the size of the labeling method mostly part size as a benchmark; mark the actual size of the casting parts diagram; allowance (including draft angle), etc. are marked out in parts of the size of the line; cast figure also apply Symbols marked parting surface. (3) should be marked on the map casting tolerance, hardness, does not allow casting defects and other technical requirements and test methods. _ _ Casting sand casting machinery provided by Qingdao Hua Chen Hua Chen Machinery Co., Ltd .. 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!