IRON-NICKEL ALLOY FOR SHADOW MASK, FREE FROM SCAB
PROBLEM TO BE SOLVED: To prevent the occurrence of scab at the time of hot rolling of a continuously cast slab by incorporating specific amounts of Cr and also S in the amount not higher than a specific value and capable of regulating Mn/S to a specific value of below into an Fe-Ni alloy. SOLUTION:...
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| creator | YASHIMA YUKIO AKIYAMA RYUICHI YAMAUCHI TAKASHI |
| description | PROBLEM TO BE SOLVED: To prevent the occurrence of scab at the time of hot rolling of a continuously cast slab by incorporating specific amounts of Cr and also S in the amount not higher than a specific value and capable of regulating Mn/S to a specific value of below into an Fe-Ni alloy. SOLUTION: This Fe-Ni alloy for shadow mask has a composition containing, by weight, 30-45% Ni, 0.21-1.0% Cr, and =100. Cr is effective in the prevention of the occurrence of intergranular oxidation which is the main cause of scab. As to Cr content, when it exceeds 0.2%, the intergranular oxidation of slab is remarkably improved, but simultaneously, the coefficient of thermal expansion is increased, thus color slippage is brought about when Cr content exceeds 1.0%. When Mn/S is less then 100, hot ductility is markedly decreased at 1200-900 deg.C in the hot rolling temp. region. When S content exceeds 0.004%, the inhibition of deterioration in hot ductility becomes difficult even if Mn/S>=100 is satisfied. Further, it is desirable to regulate Mn content to |
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SOLUTION: This Fe-Ni alloy for shadow mask has a composition containing, by weight, 30-45% Ni, 0.21-1.0% Cr, and <=0.004% S in the range where the weight ratio of Mn content to S content (Mn/S) becomes >=100. Cr is effective in the prevention of the occurrence of intergranular oxidation which is the main cause of scab. As to Cr content, when it exceeds 0.2%, the intergranular oxidation of slab is remarkably improved, but simultaneously, the coefficient of thermal expansion is increased, thus color slippage is brought about when Cr content exceeds 1.0%. When Mn/S is less then 100, hot ductility is markedly decreased at 1200-900 deg.C in the hot rolling temp. region. When S content exceeds 0.004%, the inhibition of deterioration in hot ductility becomes difficult even if Mn/S>=100 is satisfied. Further, it is desirable to regulate Mn content to <=0.5% because the coefficient of thermal expansion is increased and the adhesion of a blackened film is deteriorated when Mn content is in excess.</description><edition>6</edition><language>eng</language><subject>ALLOYS ; CHEMISTRY ; FERROUS OR NON-FERROUS ALLOYS ; METALLURGY ; TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><creationdate>1997</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19971007&DB=EPODOC&CC=JP&NR=H09263892A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76289</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=19971007&DB=EPODOC&CC=JP&NR=H09263892A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>YASHIMA YUKIO</creatorcontrib><creatorcontrib>AKIYAMA RYUICHI</creatorcontrib><creatorcontrib>YAMAUCHI TAKASHI</creatorcontrib><title>IRON-NICKEL ALLOY FOR SHADOW MASK, FREE FROM SCAB</title><description>PROBLEM TO BE SOLVED: To prevent the occurrence of scab at the time of hot rolling of a continuously cast slab by incorporating specific amounts of Cr and also S in the amount not higher than a specific value and capable of regulating Mn/S to a specific value of below into an Fe-Ni alloy. SOLUTION: This Fe-Ni alloy for shadow mask has a composition containing, by weight, 30-45% Ni, 0.21-1.0% Cr, and <=0.004% S in the range where the weight ratio of Mn content to S content (Mn/S) becomes >=100. Cr is effective in the prevention of the occurrence of intergranular oxidation which is the main cause of scab. As to Cr content, when it exceeds 0.2%, the intergranular oxidation of slab is remarkably improved, but simultaneously, the coefficient of thermal expansion is increased, thus color slippage is brought about when Cr content exceeds 1.0%. When Mn/S is less then 100, hot ductility is markedly decreased at 1200-900 deg.C in the hot rolling temp. region. When S content exceeds 0.004%, the inhibition of deterioration in hot ductility becomes difficult even if Mn/S>=100 is satisfied. Further, it is desirable to regulate Mn content to <=0.5% because the coefficient of thermal expansion is increased and the adhesion of a blackened film is deteriorated when Mn content is in excess.</description><subject>ALLOYS</subject><subject>CHEMISTRY</subject><subject>FERROUS OR NON-FERROUS ALLOYS</subject><subject>METALLURGY</subject><subject>TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>1997</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZDD0DPL30_XzdPZ29VFw9PHxj1Rw8w9SCPZwdPEPV_B1DPbWUXALcnUFEv6-CsHOjk48DKxpiTnFqbxQmptB0c01xNlDN7UgPz61uCAxOTUvtSTeK8DDwNLIzNjC0sjRmBg1ACdTJlg</recordid><startdate>19971007</startdate><enddate>19971007</enddate><creator>YASHIMA YUKIO</creator><creator>AKIYAMA RYUICHI</creator><creator>YAMAUCHI TAKASHI</creator><scope>EVB</scope></search><sort><creationdate>19971007</creationdate><title>IRON-NICKEL ALLOY FOR SHADOW MASK, FREE FROM SCAB</title><author>YASHIMA YUKIO ; AKIYAMA RYUICHI ; YAMAUCHI TAKASHI</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JPH09263892A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>1997</creationdate><topic>ALLOYS</topic><topic>CHEMISTRY</topic><topic>FERROUS OR NON-FERROUS ALLOYS</topic><topic>METALLURGY</topic><topic>TREATMENT OF ALLOYS OR NON-FERROUS METALS</topic><toplevel>online_resources</toplevel><creatorcontrib>YASHIMA YUKIO</creatorcontrib><creatorcontrib>AKIYAMA RYUICHI</creatorcontrib><creatorcontrib>YAMAUCHI TAKASHI</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>YASHIMA YUKIO</au><au>AKIYAMA RYUICHI</au><au>YAMAUCHI TAKASHI</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>IRON-NICKEL ALLOY FOR SHADOW MASK, FREE FROM SCAB</title><date>1997-10-07</date><risdate>1997</risdate><abstract>PROBLEM TO BE SOLVED: To prevent the occurrence of scab at the time of hot rolling of a continuously cast slab by incorporating specific amounts of Cr and also S in the amount not higher than a specific value and capable of regulating Mn/S to a specific value of below into an Fe-Ni alloy. SOLUTION: This Fe-Ni alloy for shadow mask has a composition containing, by weight, 30-45% Ni, 0.21-1.0% Cr, and <=0.004% S in the range where the weight ratio of Mn content to S content (Mn/S) becomes >=100. Cr is effective in the prevention of the occurrence of intergranular oxidation which is the main cause of scab. As to Cr content, when it exceeds 0.2%, the intergranular oxidation of slab is remarkably improved, but simultaneously, the coefficient of thermal expansion is increased, thus color slippage is brought about when Cr content exceeds 1.0%. When Mn/S is less then 100, hot ductility is markedly decreased at 1200-900 deg.C in the hot rolling temp. region. When S content exceeds 0.004%, the inhibition of deterioration in hot ductility becomes difficult even if Mn/S>=100 is satisfied. Further, it is desirable to regulate Mn content to <=0.5% because the coefficient of thermal expansion is increased and the adhesion of a blackened film is deteriorated when Mn content is in excess.</abstract><edition>6</edition><oa>free_for_read</oa></addata></record> |
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| subjects | ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY TREATMENT OF ALLOYS OR NON-FERROUS METALS |
| title | IRON-NICKEL ALLOY FOR SHADOW MASK, FREE FROM SCAB |
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