Casting defects: cold resisting grain Other names: Splice (butt), waterlines. Features: low temperature metal flow but each butt weld gap dock cable channel and the emergence of supply, irregular linear, there are two non-penetrating and penetrating, there is a trend developing in the role of external forces. Reason: a molten metal pouring temperature is low or the mold temperature is low. 2, alloy composition does not meet the standards, poor mobility. 3, sub-unit filled with liquid metal, fusion is bad. 4, gate unreasonable process is too long. 5, filling speed is low or poor venting. 6, lower than the pressure. Casting: Depression Other names: indented, collapsed, suffocation, collapse edge. Characteristics: dented portion appearing on the casting smooth surface, the surface was naturally cooled state. Causes a casting structure design is unreasonable, there are thick parts locally generated heat section. 2, alloy shrinkage. 3, the gate cross-sectional area is too small. 4, the ratio down. 5, the mold temperature is too high. Remedy 1, improve casting structure, somewhat uniform wall thickness, thickness difference between the larger joints should gradually ease the transition dock cable channel vendors, eliminating hot section. 2. Select the shrinkage of the alloy. 3, correctly set the gating system, appropriate to increase the cross-sectional area of ??the gate. 4, increasing injection pressure. 5, appropriate adjustments to die thermal equilibrium conditions, the use of temperature control devices and cooling. Ports cable trough, Chen Hua machinery (certified), dock cable channel provided by China Machinery Equipment 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.