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本研究从两方面提出了OTi合金的设想:1.生产球铁时怕铁水中干扰元素危害,产生少量蠕墨,因此避免采用地方生铁。如今生产蠕铁可故意利用地方生铁中的钛。2.专利的Mg—Ti—RE合金中的钛有可能被生铁中固有的钛所取代,并保持原合金的蠕化效果。为此,模拟冲天炉和电炉熔化含Ti的地方生铁,加入“OTi”Mg—Ti—RE合金做了系列试验,结果与设想完全一致。进而又做了生产性验证,结果与专利合金一样,并且解决了铁水中Ti的积累和被“污染”的弊病。OTi合金蠕化剂成本更低廉,熔制更方便。也分析了二十余种地方生铁中的Ti量,发现多数在要求范围以内。因此推广应用该合金有着广阔的前景。文章提出了OTi合金的两种具体成分配比。
This research put forward the tentative ideas of OTi alloy from two aspects: 1. When producing ductile iron, it is afraid of the harmful elements in molten iron, producing a small amount of vermicular graphite, so avoiding using local pig iron. The production of vermicular iron can now be used intentionally in local pig iron. 2. Titanium in patented Mg-Ti-RE alloy may be replaced by titanium inherent in pig iron and maintain the original alloy’s vermicularity. To this end, simulated cupola and electric furnace melting pig iron containing Ti, adding “OTi ” Mg-Ti-RE alloy series of tests, the results and the idea is exactly the same. And then made a productive verification, the result is the same with the patent alloy, and solved the hot metal in the accumulation of Ti and was “pollution ” shortcomings. OTi alloy vermiculite cheaper, more convenient melting. The amount of Ti in more than twenty kinds of local pig iron was also analyzed and found to be mostly within the required range. Therefore, promoting the use of the alloy has broad prospects. The article presents two specific components of OTi alloy ratio.