Coating system for fluiding components from cast iron under degradation by wear, cavitation and corrosion

用于因磨损、气蚀和腐蚀而退化的铸铁流化部件的涂层系统

• 批准号: 289947989
• 负责人: Professor Dr.-Ing. Matthias Oechsner
• 金额: --
• 依托单位: Institut für Schweißtechnik und Fügetechnik (ISF)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2016
• 资助国家: 德国
• 起止时间: 2015-12-31 至 2018-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/289947989?language=en
• 关键词: Coating; system; fluiding; components; cast; Coating; system; fluiding; components; cast

Many mechanical parts are damaged by mechanical and corrosive loads, e.q. applications of pumps in plant constructions and off-shore properties. The resistance against wear (e.q. abrasion, erosion, and cavitation) and corrosion influence often in combination significantly the life span or the efficiency of such components.The optimisation of the current properties leads often to complex structures of the components. That is the reason to use casting as manufacturing technique and for reasons of economy as material lamellar graphit cast iron. To improve the resistance of the components against the degradation expensive steels and special cast materials are used. These materials are difficult to machine and lead to high manufacturing costs. High developed surfacing technologies have the potential to improve the capacity of components to withstand the loads through economic coatings and to use low cost base materials. The development of such coatings is carried out by experiments and experiences. For choosing coating systems for a defined loading combination the relation between mechanical-technological properties of the coatings and the properties under combined wear, erosion, cavitation and corrosion loading is still not sufficiently investigated.Primary aim of this proposal is the development of a coating system that improves the resistance of components of cast iron against the combined load (erosion, cavitation, corrosion). As coating materials for surfacing (plasma transferred arc surfacing) copper based materials and duplex steel are planned. A combination of welded coatings with thermal sprayed coatings shall be investigated in addition. The development of the coating needs investigation of the basic demands of surfacing cast iron and the influence of the mechanism of the degradation to the resistance of the welded coatings and the combination of welded and sprayed coating against the loads. The basic scientific findings can be transferred to other coating systems of cast iron components and are not limited to this project.

许多机械零件被机械和腐蚀负荷损坏，E.Q。泵在工厂结构和离岸特性中的应用。对磨损（E.Q.磨损，侵蚀和气蚀）和腐蚀影响的抗性通常会显着结合起来的寿命或此类组件的效率。当前特性的优化通常导致组件的复杂结构。这就是将铸造用作制造技术的原因，并出于经济原因作为材料层状石墨铸铁。为了提高组件对降解昂贵的钢和特殊铸造材料的阻力。这些材料很难加工并导致高生产成本。高发达的表面技术有可能提高组件通过经济涂料承受负载的能力并使用低成本基础材料。这种涂层的开发是通过实验和经验进行的。 For choosing coating systems for a defined loading combination the relation between mechanical-technological properties of the coatings and the properties under combined wear, erosion, cavitation and corrosion loading is still not sufficiently investigated.Primary aim of this proposal is the development of a coating system that improves the resistance of components of cast iron against the combined load (erosion, cavitation, corrosion).作为涂层材料（等离子体转移的弧形表面）铜的材料和双链钢。还应研究焊接涂层与热喷涂涂料的组合。涂层的开发需要研究表面铸铁的基本需求，以及降解机理对焊接涂层的耐药性的影响以及焊接和喷涂涂层的组合。基本的科学发现可以转移到铸铁组件的其他涂料系统中，并且不限于该项目。