海上钢制气缸6170

1,Steel nitride liner has applied for two national invention patents. Patent application number: 200710014894.X,200710014895.4. 2,Nitriding steel cylinder of high quality carbon steel seamless steel tubes for the blank, formed by the patented technology and gas soft nitriding surface treatment, the comprehensive mechanical properties of chromium than normal cylinder B was 5 times higher than that can completely prevent the cylinder Sets out the generation stations and broken. Nitride layer depth of up to 0.08-0.12mm, hardness of HV560 (equivalent to HRC53) above, can improve markedly as the liner and resistance to extravagant nature of its service life than ordinary cast iron cylinder liners to improve more than 5 times. 3,Steel nitrided piston ring cylinder liner and chrome has a good distribution between the vice of. Internal combustion engine by the State Quality Inspection Center and the Shandong Huayuan Laidong Engine Co., Ltd. bench proved matching ordinary chrome piston rings, cylinder liners and piston rings up to the best match. 100 hours of test results to strengthen Before the test Test Extravagant loss of value Cylinder diameter tolerance +0.018 +0.021 0.003 Gas ring opening gap0.25 0.25 0 Oil ring gap opening 0.25 0.25 0 4,Carbon steel alloy cast iron is better than the thermal conductivity and thermal expansion coefficient of cast iron rather, nitride steel cylinder so a good improvement to better engine cooling.