China in 513 BC, cast out of the world's oldest written records found in cast iron - Jin Ding mold streamer tank, weighing about 270 kg. Europe around the eighth century AD began producing cast iron. Cast member appears to expand the scope of application of the casting. For example, in 15 to the 17th century, Germany, France and other countries have laid a lot of cast-iron pipes for drinking water to residents. After the Industrial Revolution of the 18th century, and so on steam engines, textile machines and railway industry rise, casting into the new era of large industrial services, casting technology began to have a big development. In the 20th century, the development of fast-speed casting, which is an important factor in the progress of technology products, requiring better casting a variety of mechanical and physical properties, while still having good mechanical processing performance; the other reason is the mechanical industry itself and other Industries such as the development of chemical, instrumentation and other streamers groove pressing, casting industry to create a favorable material conditions. Such as the development of testing methods streamer tank manufacturers to ensure the improvement of the quality of castings and stability and to the development of casting theory provided the conditions; electron microscope invented to help people deep into the microscopic world of metal, probe the mysteries of metallic crystals, study metal solidification theory, guiding casting. Metal smelting and casting process of cast molding process is inseparable from the high-quality refractory materials, melting furnace and the quality of intermediate iron / steel ladle refractories will directly affect the chemical composition of the liquid metal, it will not cause overall quality castings . adverse effects of the smelting process used to restore the casting refractories Category: bricks: silica brick, high alumina brick, corundum brick three slots, brick, Mg-Al brick, MgO-C and other unshaped refractory: Ramming expected, casting materials, refractory cement, silica sand, magnesia, spreads and lightweight insulation materials such as Qingdao, Chen Hua Machinery Co., Ltd. is an emerging dynamic enterprises Group (features: Qingdao Licang southeast canal foundry, Chen Hua model plant, rubber plant dies, welding sheet metal stamping plant, machining plant, equipment manufacturing plant, bronze handicraft factory two joint ventures). It has a staff of 70, two senior economist, a senior accountant, senior engineer 5, 16 engineers, technicians and 18; has an experienced, high-level technical workers. Strong technical force, and through the ISO9000 series of quality certification to the quality assurance system and advanced detection facilities. Single, Chen Hua Machinery (certified), streamers groove 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!