Our country is casting a big country, a serious overproduction of domestic casting, but our cast serious excess capacity refers to the country's low-end casting overcapacity, China's high-end casting production is difficult to satisfactory market need, therefore, our casting casting industry needs to produce low-end can be converted into high-end casting production capacity, promote the progress of the casting industry in China. Casting shrinkage: Other names: eye reduction, reduced empty. Characteristics: die casting during condensation, shape caused due to insufficient internal compensation irregular, rough surface of the hole. Causes an alloy pouring temperature is too high. 2, casting structure uneven thickness, resulting in hot section. 3, low pressure ratio. 4, the overflow tank capacity is not enough slots streamer wharf price, overflow mouth too thin. 5, the pressure chamber fullness too, more than expected (cake) is too thin, eventually feeding no effect. 6, the gate is small. 7, the high local temperature of the mold. Remedy 1, to comply with norms pier streamer alloy melting tank, alloy liquid hot for too long, reduce the pouring temperature. 2. Improved casting structure, eliminating the accumulation of metal parts, uniform wall thickness, slow transition. 3, an appropriate increase in pressure ratio. 4, increase the overflow tank capacity marina streamer tank equipment, thickening of the overflow outlet. 5. Increase the pressure chamber fullness, quantitative casting. 6, appropriate to improve the gating system to facilitate the pressure very well delivered. Shandong pier streamer tank, Chen Hua machinery (Certified), pier streamer groove provided by China Machinery Co., Ltd. Qingdao Chen. Qingdao Hua Chen Machinery Co., Ltd. (www.qdchenhua.com) is Qingdao, a leader in CNC machine tools over the years, the company implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. Chen Hua Machinery leadership in the staff warmly welcome all inquiries negotiations to create a better mechanical Chen Hua future.