表面技术2017，Vol.46Issue(2)：113-118,6.DOI:10.16490/j.cnki.issn.1001-3660.2017.02.018
铸铁缸套表面石墨含量对抗拉缸性能的影响
Influence of Surface Graphite Content on Cylinder Scoring Resistance of Cast Iron Cylinder Liner
摘要
Abstract
The work aims to study the influencing law of surface graphite content on cylinder scoring resistance of cast iron cylinder liner. Based on lean oil test, the cylinder scoring test was performed to the cast iron cylinder liners at different contents of surface graphite including 0.18%, 1.27%, 2.13%, 3.92%, 4.66% and 5.88% respectively. The cylinder scoring time was rec-orded during the test. Surface morphology was observed and composition of cylinder liner was analyzed by virtue of scanning electron microscopy (SEM). Exposure of graphite on the surface of the cast iron cylinder liner could prolong the time of cylinder scoring. However, as the content of surface graphite increased, the cylinder scoring time first increased tendency and then de-creased. When the content of surface graphite was 4.66%, the time of cylinder scoring was 8 h, 9.6 times of that without graphite coating. The graphite exposed on the surface of the cylinder liner plays an important role in oil storage and solid lubrication, im- proving the adhesion resistance of matched pair. On the other hand, as graphite in soft phase, overall carrying capability of the cylinder sleeve decreased and may be subject to cylinder scoring easily when the content of surface graphite increased.关键词
表面石墨含量/铸铁缸套/拉缸/拉缸时间/贫油试验Key words
content of surface graphite/cast iron cylinder liner/cylinder scoring/time of cylinder scoring/lean oil test分类
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李雪,王维伟,沈岩,李承娣,徐久军..铸铁缸套表面石墨含量对抗拉缸性能的影响[J].表面技术,2017,46(2):113-118,6.基金项目
国家自然科学基金项目(51509029) （51509029）
辽宁省教育厅基金资助项目(L2015065) （L2015065）
中央高校基本科研业务费专项资金资助项目(3132015032)National Natural Science Foundation of China(51509029) （3132015032）
the General Scientific Project of Liaoning Province Education Depart-ment(L2015065) （L2015065）
the Fundamental Research Funds for the Central Universities(3132015032) （3132015032）
