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1. 发明专利

JPS5930220B2 JPS5930220B2 - 失效
公开(公告)号：JPS5930220B2
公开(公告)日：1984-07-25
申请号：JP7887277
申请日：1977-06-01
申请人： Nippon Kokan Kk , Kokan Kogyo Kk
发明人： ITOIDA MUTSUMI , KONDO TAKAAKI , TAJIMA OSAMU , WATANABE KYOSHI
IPC分类号： G01N25/50 , G01K13/00 , G01N25/00

2. 发明专利

JPS58124950A DETERMINATION METHOD FOR SULFUR IN STEEL CLASSIFIED BY FORM 失效
公开(公告)号：JPS58124950A
公开(公告)日：1983-07-25
申请号：JP855382
申请日：1982-01-22
申请人： NIPPON KOKAN KK
发明人： TAKAHASHI TAKAMASA , ITOIDA MUTSUMI , CHINO ATSUSHI
IPC分类号： G01N33/20
摘要： PURPOSE:To perform the determination of sulfur in steel classified by form quickly with a good operational property, by determining an amount of sulfur exsisting as solid dissolved sulfur, iron sulfide and manganese sulfide in the steel from gaseous hydrogen sulfide obtained by reducing by heating under the existence of gaseous hydrogen. CONSTITUTION:A boat 4 taken in a steel sample 3 is placed in a tube 2 and a gaseous hydrogen 5 is flowed into the tube 2 flowing a gaseous nitrogen 6 in the tube 2 and a furnace 1 and then, a gaseous hydrogen atmosphere is produced by replacing air by said mixed gas. And, MnS, FeS and occluded S existing in the steel, are dissociated by heating the sample 3 in the tube 2 at 1,000-1,350 deg.C and dissociated sulfur is converted into hydrogen sulfide H2S by the gaseous hydrogen 5 and this hydrogen sulfide is analyzed automatically by a detector 9. In this manner, the amount of sulfur existing as the solid dissolved sulfur, iron sulfide and manganese sulfide is determined and the total amount of the sulfur in the steel is determined together with said sulfur amount. The sulfur amount existing as CaS, RES is found by subtracting the amount of the sulfur existing as the MnS and occluded S measured preliminarily from the total amount of the sulfur measured in such a manner.

3. 发明专利

JPS5835553B2 失效
公开(公告)号：JPS5835553B2
公开(公告)日：1983-08-03
申请号：JP7805476
申请日：1976-07-01
申请人： NIPPON KOKAN KK
发明人： SAITO AKIRA , ISHII TERUAKI , ITOIDA MUTSUMI , OKADA YUTAKA , MORISHITA YOSHIHIKO
IPC分类号： C10B45/00 , C10B57/00

4. 发明专利

JPH0116384B2 失效
公开(公告)号：JPH0116384B2
公开(公告)日：1989-03-24
申请号：JP10758582
申请日：1982-06-24
申请人： NIPPON KOKAN KK
发明人： TAKAHASHI TAKAMASA , MURAKAMI KATSUHIKO , ITOIDA MUTSUMI , TOMITA TOMOJI
IPC分类号： G01N33/20

5. 发明专利

JPS58119383A SEPARATION OF FINE PARTICLE ACCORDING TO PARTICLE SIZE 失效
公开(公告)号：JPS58119383A
公开(公告)日：1983-07-15
申请号：JP42382
申请日：1982-01-06
申请人： NIPPON KOKAN KK
发明人： TAKAHASHI TAKAMASA , ITOIDA MUTSUMI , FUJIO ETSUZOU , CHINO ATSUSHI
IPC分类号： B07B1/00

6. 发明专利

JPS58225353A Method for rapidly inspecting central segregation of continuously cast material 失效
标题翻译：用于快速检查连续铸造材料的中心分离的方法
公开(公告)号：JPS58225353A
公开(公告)日：1983-12-27
申请号：JP10758582
申请日：1982-06-24
申请人： Nippon Kokan Kk
发明人： TAKAHASHI TAKAMASA , MURAKAMI KATSUHIKO , ITOIDA MUTSUMI , TOMITA TOMOJI
IPC分类号： G01N33/20
CPC分类号： G01N33/20
摘要： PURPOSE:To inspect the central segregation of a continuously cast material simply and rapidly on the scene without necessitating the cutting of a special test pieces, by directly coating the cross area of the continuously cast material with a solvent solution prepared by dissolving a non-oxidative acid in a non- oxidative solvent low in vapor pressure to precipitate carbon. CONSTITUTION:When a continuously cast material 1 is cooled to an appropriate temp., for example, 100-150 deg.C, a surface 2 to be inspected is conditioned by a grinding means 3. A place to be inspected is directly coated with a solvent prepared by dissolving a non-oxidative acid high in iron dissolving power, having a high b.p. and low in vapor pressure such as sulfuric acid or phosphoric acid in a non-oxidative solvent well dissolving a reaction product such as polyhydric alcohols, having a high b.p. and low in vapor pressure. When the solvent 4 is coated by a spray means 5, the dissolution of steel on the surface to be inspected and the decomposition of carbon or carbide are simultaneously and amorphous carbon 8 is precipitated. The segregation of this precipitated carbon in recorded by a visual observing camera 6 or the fabrication of carbon print due to a sticky tape 7 to inspect central segregation.
摘要翻译：目的：在不需要切割特殊试件的情况下，对连续铸造材料的中心偏析进行简单，快速的检查，直接用连续铸造材料的横截面涂覆溶解溶液，溶剂溶液通过溶解非氧化性酸在低氧蒸气压力低的非氧化性溶剂中沉淀出碳。构成：当将连续铸造的材料1冷却至适当的温度，例如100-150℃时，待检查的表面2由研磨装置3调节。待检查的地方直接涂覆有通过溶解高铁的非氧化酸溶解力制备的溶剂，具有高碱基对并且在非氧化性溶剂中的硫酸或磷酸的蒸气压低的溶剂，其溶解了诸如多元醇的反应产物，其具有高的沸点。并且蒸汽压低。当通过喷雾装置5涂布溶剂4时，钢被溶解在待检测的表面上并且碳或碳化物的分解同时被无定形碳8沉淀。通过视觉观察照相机6记录的沉淀碳的分离或由于粘性带7的碳印的制造来检查中心偏析。

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