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首页> 外文会议>World Conference on Titanium v.1; 20030713-20030718; Hamburg; DE >An Advanced ESR Process for the Production of Ti- Slabs
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An Advanced ESR Process for the Production of Ti- Slabs

机译：钛板生产的先进ESR工艺

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Since the 1950s Titanium and Titanium alloy ingots have been produced in a two or three step VAR Melting Process. As starting material mainly Ti Sponge and master alloys were used. During the 1980s the so-called Electron Beam Cold Hearth Remelting (EBCHR) Process was introduced for Ti scrap recycling on an industrial scale. A wide variety of assorted Ti scrap materials can be used in the EBCHR process as initial feedstock and in addition to cylindrical electrodes for the VAR process also slabs could be produced. This shape reduces the forging and rolling cost for sheet production. Nevertheless, the overall production costs of both processes are relatively high. Therefore, it will be necessary to define a new melting process for low cost production of Titanium alloy sheet to fulfill the cost targets of the automotive industry or for architectural applications. Lab scale experiments were carried out to verify the possibility of electroslag remelting as the first and final step to remelt titanium. If successful, ESR could replace VAR or EBCHR processes as the methods of choice for the first or final remelting step. At least for some applications a single step process should be a possible target. In order to improve the ESR process for this kind of application and to eliminate the problems of oxygen, nitrogen and hydrogen pick up, a furnace design has been developed for electroslag remelting of titanium and its alloys under artificial atmosphere. The advantages of this process, using a new ESR furnace design for improved process control and metallurgical results, will be described in this paper. Also some ideas for Titanium-nitride and oxygen removal will be discussed.
机译：自1950年代以来，钛和钛合金锭是通过两步或三步VAR熔化工艺生产的。作为起始材料，主要使用了钛海绵和中间合金。在1980年代，引入了所谓的电子束冷炉床重熔（EBCHR）工艺，用于工业规模的钛废料回收。 EBCHR工艺中可以使用各种各样的Ti废料作为初始原料，除了用于VAR工艺的圆柱形电极外，还可以生产板坯。这种形状降低了板材生产的锻造和轧制成本。然而，两种方法的总生产成本都较高。因此，有必要为钛合金薄板的低成本生产定义一种新的熔化工艺，以满足汽车行业或建筑应用的成本目标。进行了实验室规模的实验，以验证电渣重熔作为重熔钛的第一步和最后一步的可能性。如果成功，ESR可以取代VAR或EBCHR工艺，作为第一步或最终重熔步骤的选择方法。至少对于某些应用程序，单步过程应该是可能的目标。为了改进这种应用的ESR工艺并消除氧，氮和氢的吸收问题，已经开发了一种炉设计，用于在人工气氛下对钛及其合金进行电渣重熔。本文将介绍采用新的ESR炉设计以改善工艺控制和冶金结果的该工艺的优点。此外，还将讨论氮化钛和除氧的一些想法。

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