Linyi Public Li Xin Machinery Co., Ltd. is the design, production, processing, marketing as one of modern science and technology enterprise resistant steel literature, using the current international advanced casting (EPC) a negative real casting process, the production of multi-resistant material high-temperature casting, casting corrosion, abrasion castings, alloy steel castings and other antioxidant. Production process and quality in a leading position, with metal spectrometer, and other advanced detection equipment. First, the casting cosmetic defects Nomenclature and Classification 7 thermal cracking in the casting penetrating or not penetrating cracks (mainly curved shape), cracked skin at the metal oxide. 8 cold cracking in the casting penetrating or not penetrating cracks (mostly straight), cracked skin at the non-oxidized metal. 9 temperature crack in the casting penetrating or not penetrating cracks. Cracking of the metal skin oxidation. Because gas cutting, welding or caused by improper heat treatment. Linyi Public Li Xin Machinery Co., Ltd. is the design, production, processing, marketing as one of modern science and technology enterprise, using the current international advanced casting (EPC) a negative real heat-resistant steel casting process to produce more material temperature casting, casting corrosion, abrasion castings, alloy steel castings and other antioxidant. Production process and quality in a leading position, with metal spectrometer, and other advanced detection equipment. LFC liquid metal filling process, and metal flow front heat, mass and momentum transfer process. Compared with traditional sand casting, lost cause type molding process more complex, not only directly related to the level of success and cast molding casting quality, but also the intrinsic quality of the casting has a crucial impact. As we all know, cast iron platform, pulley casting defects are basically the source of liquid metal from filling to solidification of liquid short period of time, in this short moment, the mold cavity undergoing tremendous change resistant steel prices, there is a pattern Thermal decomposition of the air gap, the liquid metal filling occurs between the appearance of its forward advance of the liquid metal filling the forefront blocked the flow of liquid metal filling state of great disturbance occurs, the negative pressure caused by the flow of metal filling a serious effect attached bi pyrolysis gaseous products discharged to the sand through the paint layer, pyrolysis residual solid product in the filling of liquid metal flow cavity is involved, the liquid metal in a variety of impurities by negative float moving role in change too slow and some slack in the castings. All kinds of physical and chemical reactions occurring phenomena are unable to see, as a cast in the production of "black box" .. Unlock the "black box." Sell heat-resistant steel, to produce castings to find the cause of defects, it is the desire of LFC workers dream of and yearning for targets. Linyi Public Li Xin Machinery Co., Ltd. is the design, production, processing, marketing as one of modern science and technology enterprises, using today's advanced international casting (EPC) of a negative real casting process, the production of high temperature casting material more resistant casting corrosion, wear resistance castings, alloy steel castings and other antioxidant. Production process and quality in a leading position, with metal spectrometer, and other advanced detection equipment. Principles bed Casting Methods: 1, preferentially using sand casting, sand casting mainly due to lower costs than other casting methods, production process is simple, short production cycle. When the wet type can not meet the requirements to consider the use of clay sand is dry sand, dry sand or other sand. Green sand casting casting weight from a few kilograms up to several tens of kilograms, while dry clay can produce castings weighing dozens of tons. 2, bed casting and casting methods should be adapted to the production lot. Low-pressure casting, die casting, centrifugal casting and other casting methods, equipment and tooling for the expensive, so only suitable for mass production. Sell ??heat resistant steel steel _ _ Public Li Xin machinery companies from Linyi Public Li Xin Machinery Limited. Linyi Public Li Xin Machinery Co., Ltd. (www.lyzlx.com) strong, credible, in Linyi, Shandong casting industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the public Li Xin Machinery Company into the brilliant and you work for a better future!