| 摘要: |
| 用等离子转移弧喷焊的轧管机顶头,同传统的整体铸造Cr17Ni2Mo不锈钢顶头相比,使用寿命提高了3~5倍。本文通过两种顶头的组织形貌,高温硬度和化学成分的对比,以及喷焊顶头整体结构的设计和焊层最佳尺寸的计算,讨论了该顶头的设计以及对实际工况的适应性和可行性。 |
| 关键词: 轧管顶头 喷焊层 等离子转移弧 |
| DOI： |
| 分类号: |
| 基金项目: |
|
| Hardfacing plugs for large rolled seamless steel pipe |
|
Cheng Xudong, Jin Dechen
|
|
Wuhan Research Institute of Material Protection
|
| Abstract: |
| The life of plugs hardfaced by plasma transferred arc is about 3-5 times longer than that of the cast Cr17Ni2Mo stainless steel plugs. In this paper, the rationality, adaptability and reliability of the surfaced plugs are discussed through comparing the metallographs, high temperature hardness and chemical composition of the above two kinds of plugs, designing the structure of the hardfaced plugs and calculating the optimization of hardfacing layer thickness. |
| Key words: plug hardfacing layer plasma transferred arc |
