Manufacturing of powder metallurgical B-alloyed tool steels on an industrial scale

粉末冶金 B 合金工具钢的工业规模制造

• 批准号: 520280463
• 负责人: Professor Dr.-Ing. Arne Röttger
• 金额: --
• 依托单位: Lehrstuhl Werkstofftechnik
• 依托单位国家: 德国
• 项目类别: Research Grants (Transfer Project)
• 资助国家: 德国
• 项目状态: 未结题
• 来源: https://gepris.dfg.de/gepris/projekt/520280463?language=en
• 关键词: Manufacturing; powder; metallurgical; alloyed; tool

This transfer project is based on the research project "B-alloyed tool steels" (project number 232707733). In the project, a comprehensive understanding of the effect and interactions of the element boron in tool steels regarding the microstructure formation processes during solidification and in the solid-state, as well as the micro-properties of the borides and carboborides formed, was gathered. With the knowledge of the effect and the respective interactions of the alloying elements in the Fe-C-B system, laboratory alloys were derived whose tribological and mechanical properties exceed those of conventional cold work tool steels at the same time as lower alloy costs. By presenting these findings at the “Tooling 2019” conference, Deutsche Edelstahlwerke GmbH became aware of this development and signaled a great deal of interest in the large-scale industrial production of B-alloyed PM tool steels. After a fundamental understanding of the microstructure formation processes of B-alloyed cold work tool steels has been developed on a laboratory scale, several new scientific and technological questions regarding powder atomization, powder processing, and the associated properties must be answered. Based on the state of knowledge of the previous research project, "B-alloyed steels", the transfer project applied here aims to develop B-alloyed tool steel grades that are manufactured by gas atomization and can be further processed with the technologies Powder-Bed-Fusion Laser-Beam/Metal (PBF-LB/M) and hot isostatic pressing (HIP). For this purpose, the potential of B-alloyed cold work steels should be shown using the example of two basic alloys. The developments serve to gain pre-economic knowledge. The following two development priorities are being pursued: 1. Development of B-alloyed tool steel that can be processed using PBF-LB/M without additional measures such as preheating of the base plate. 2. Development of a secondary hardening B-alloy PM tool steel as a HIP product.

该转移项目基于研究项目“ B-Aloyed工具钢”（项目编号232707733）。在项目中，收集了对固体和固态过程中的微观结构形成过程的元素在工具钢中的效果和相互作用的全面理解，并收集了硼化物和碳纤维形成的微质体。鉴于FE-C-B系统中合金元素的效果和相对相互作用的了解，实验室合金的摩擦学和机械性能超过了传统冷工作工具钢的摩擦性和机械性能，这与较低的合金成本相同。通过在“ Tooling 2019”会议上介绍这些发现，Deutsche Edelstahlwerke GmbH意识到了这一发展，并对B-Bloyed PM Tool Steels的大规模工业生产产生了极大的兴趣。在对B合金冷工作工具的微观结构形成过程的基本了解之后，已经在实验室规模上开发了一些有关粉末雾化，粉末加工以及相关特性的新科学和技术问题。基于先前研究项目的知识状态“与B-Aloyed Steels”，此处应用的转移项目旨在开发由气雾化制造的B合金工具钢等级，并可以使用Technologies粉末床融合激光束/金属（PBF-LB/M）和热等速度按下（HIP）进行进一步处理。为此，应使用两种基本合金的示例显示与B合金冷工作钢的潜力。这些发展有助于获得经济前知识。正在提出以下两个开发优先事项：1。可以使用PBF-LB/m处理B合金工具钢，而无需采取其他措施，例如预热底板。 2。开发二级硬合金PM工具钢作为髋关节产品。