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首页> 外文期刊>Welding in the World: Journal of the International Institute of Welding: Journal of the International Institute of Welding >Remanufacturing of die casting dies made of hot-work steels by using the wire-based electron-beam welding with an in situ heat treatment
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Remanufacturing of die casting dies made of hot-work steels by using the wire-based electron-beam welding with an in situ heat treatment

机译：通过使用基于线的电子束焊接用原位热处理的电线电子束焊接对热工作钢制成的压铸模具的再制造

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摘要

The economic efficiency of die-casting processes is largely determined by the lifetime of the die. Such dies are exposed to high cyclical loads of thermal, mechanical, tribological and chemical loads during operation. These loads cause various types of damage, which reduce the lifetime. If the production comes to an unexpected stop due to a critical defect in the casting tool, repair welding is often the only way to return the tool to production immediately. At present, primarily manual TIG or plasma-welding processes are used for this purpose, which, however, exhibit insufficient process reliability and thus achieve an insufficient extension of lifetime. The primary objective of the research project is therefore the development of a technology for the economical regeneration of locally damaged die-casting dies with improved metallurgical properties compared with conventional repair welds. This forms an elementary basis for extending the service life of dies in series production. For this reason, electron-beam welding is to be qualified because of its possibilities for variable, need-adapted designs of the overall heat balance and the use of filler material as a welding process for industrially used hot-work steels.
机译：压铸过程的经济效率主要由模具的寿命决定。在运行期间，这种模具暴露于热，机械，摩擦学和化学载荷的高周期性载荷。这些负载导致各种类型的损坏，减少了寿命。如果由于铸造工具中的关键缺陷，生产出乎意料的停止，修复焊接通常是将工具立即返回生产的唯一方法。目前，主要是手动TIG或等离子焊接工艺用于此目的，然而，该目的具有不足的过程可靠性，从而实现了寿命的不足。因此，与传统的修复焊缝相比，研究项目的主要目标是开发用于局部受损压铸模具的经济再生的技术，与传统的修复焊缝相比，冶金性能改善。这形成了延长了串联生产中死亡使用寿命的基础。因此，电子束焊接是由于其可变的可能性，需要适应的整体热平衡的可能性和填充材料作为工业用过的热工作钢的焊接过程的可能性。

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