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OXIDATION RESISTANT RESISTANCE HEATER ALLOY MANUFACTURED BY ADDING TRACE OF Be TO CONVENTIONAL Fe-Cr-Al BASE ALLOY AND METHOD FOR MANUFACTURING THE SAME TO IMPROVE CLEANLINESS BY APPLYING THE Fe-Cr-Al BASE ALLOY TO ELECTRO-SLAG REMELTING
OXIDATION RESISTANT RESISTANCE HEATER ALLOY MANUFACTURED BY ADDING TRACE OF Be TO CONVENTIONAL Fe-Cr-Al BASE ALLOY AND METHOD FOR MANUFACTURING THE SAME TO IMPROVE CLEANLINESS BY APPLYING THE Fe-Cr-Al BASE ALLOY TO ELECTRO-SLAG REMELTING
PURPOSE: To provide an alloy for metal resistance heater having improved high temperature quality such as high temperature oxidation resistance by adding a trace of Be to a Fe-Cr-Al base alloy billet, and a method for producing an ingot for Fe-Cr-Al base metal resistance heater with improved high temperature oxidation resistance by controlling impurities, trace of alloy elements and cleanliness of the alloy billet. CONSTITUTION: The alloy for Fe-base resistance heater having improved high temperature oxidation resistance comprises 14.0 to 24.0 wt.% of Cr, 4.0 to 6.0 wt.% of Al, 0.01 to 0.1 wt.% of Be and the balance of Fe. The method for manufacturing an alloy for Fe-base resistance heater having improved high temperature oxidation resistance is characterized in that an alloy comprising 14.0 to 24.0 wt.% of Cr, 4.0 to 6.0 wt.% of Al, 0.01 to 0.1 wt.% of Be and the balance of Fe is manufactured in an electro-slag remelting process in which an electrode descending speed is maintained to from 2 to 10 mm/min in such a manner that secondary electric current is controlled to a range of 28 to 35 A/cm¬2 by adding Be in such a manner that an Al-Be alloy is added to molten metal of the consumed electrode during manufacturing of a consumed electrode and by using slag of CaF2-Al2O3-CaO component system.
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机译：目的：通过向Fe-Cr-Al基合金坯料中添加痕量Be，提供具有改善的高温品质如高温抗氧化性的金属电阻加热器合金，以及用于生产Fe-Cr-铸锭的方法铝基金属电阻加热器，通过控制杂质，合金元素的痕迹和合金坯的清洁度来提高其高温抗氧化性。组成：具有改善的高温抗氧化性的铁基电阻加热器合金，包括14.0至24.0 wt。％的Cr，4.0至6.0 wt。％的Al，0.01至0.1 wt。％的Be和其余的Fe。具有改善的高温抗氧化性的用于Fe基电阻加热器的合金的制造方法的特征在于，该合金包含14.0至24.0重量％的Cr，4.0至6.0重量％的Al，0.01至0.1重量％的Al。在电渣重熔工艺中制造余量的Fe，其中电极的下降速度保持在2至10 mm / min的范围内，从而将二次电流控制在28至35 A /通过以在消耗电极的制造期间将Al-Be合金添加到消耗电极的熔融金属中并且通过使用CaF 2 -Al 2 O 3 -CaO组分体系的炉渣的方式添加Be来使cm -2减小。
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