SULFUR-CONTAINING FREE CUTTING STEEL, METHOD FOR PRODUCING THE FREE CUTTING STEEL AND METHOD FOR MACHINING THE FREE CUTTING STEEL

PROBLEM TO BE SOLVED: To produce sulfur-containing free cutting steel which has excellent machinability, and to provide a method for stably producing the steel. SOLUTION: The sulfur-containing free cutting steel has a composition containing, by weight, 0.03 to 0.55% C, 0.10 to 0.35% Si, 0.3 to 1.5%...

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1. Verfasser:	YOSHIMURA TSUNEO
Format:	Patent
Sprache:	eng
Schlagworte:	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY METALLURGY OF IRON PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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creator	YOSHIMURA TSUNEO
description	PROBLEM TO BE SOLVED: To produce sulfur-containing free cutting steel which has excellent machinability, and to provide a method for stably producing the steel. SOLUTION: The sulfur-containing free cutting steel has a composition containing, by weight, 0.03 to 0.55% C, 0.10 to 0.35% Si, 0.3 to 1.5% Mn, 0.01 to 0.15% P, 0.03 to 0.5% S, 0.003 to 0.015% O and =20% of nonmetallic inclusions in the steel consist of oxysulfides. The sulfur-containing free cutting steel is produced by adding a wire made of an iron sheet including a mixture containing an alkali metal salt of sulfur oxoacidic anhydride and sulfur power to molten steel, and performing vulcanization and enrichiment of oxygen thereto.
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SOLUTION: The sulfur-containing free cutting steel has a composition containing, by weight, 0.03 to 0.55% C, 0.10 to 0.35% Si, 0.3 to 1.5% Mn, 0.01 to 0.15% P, 0.03 to 0.5% S, 0.003 to 0.015% O and <=0.02% N. In the production process for the steel, Al as a deoxidizer and a crystal grain size control agent are not added thereto, and >=20% of nonmetallic inclusions in the steel consist of oxysulfides. 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The sulfur-containing free cutting steel is produced by adding a wire made of an iron sheet including a mixture containing an alkali metal salt of sulfur oxoacidic anhydride and sulfur power to molten steel, and performing vulcanization and enrichiment of oxygen thereto.</description><subject>ALLOYS</subject><subject>CHEMISTRY</subject><subject>FERROUS OR NON-FERROUS ALLOYS</subject><subject>METALLURGY</subject><subject>METALLURGY OF IRON</subject><subject>PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL</subject><subject>TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS</subject><subject>TREATMENT OF ALLOYS OR NON-FERROUS METALS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2002</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNrjZGgMDvVxCw3Sdfb3C3H09PP0c1dwC3J1VXAODQkBcYJDXF19dBR8XUM8_F0U3PyDFAKC_F1CnUFyIR6uWBQrOPq5IKv3dXT2gBiMXT0PA2taYk5xKi-U5mZQcnMNcfbQTS3Ij08tLkhMTs1LLYn3CjAyMDAyNjM2szR0NCZKEQAFPTyV</recordid><startdate>20021218</startdate><enddate>20021218</enddate><creator>YOSHIMURA TSUNEO</creator><scope>EVB</scope></search><sort><creationdate>20021218</creationdate><title>SULFUR-CONTAINING FREE CUTTING STEEL, METHOD FOR PRODUCING THE FREE CUTTING STEEL AND METHOD FOR MACHINING THE FREE CUTTING STEEL</title><author>YOSHIMURA TSUNEO</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_JP2002363691A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>eng</language><creationdate>2002</creationdate><topic>ALLOYS</topic><topic>CHEMISTRY</topic><topic>FERROUS OR NON-FERROUS ALLOYS</topic><topic>METALLURGY</topic><topic>METALLURGY OF IRON</topic><topic>PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL</topic><topic>TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS</topic><topic>TREATMENT OF ALLOYS OR NON-FERROUS METALS</topic><toplevel>online_resources</toplevel><creatorcontrib>YOSHIMURA TSUNEO</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>YOSHIMURA TSUNEO</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>SULFUR-CONTAINING FREE CUTTING STEEL, METHOD FOR PRODUCING THE FREE CUTTING STEEL AND METHOD FOR MACHINING THE FREE CUTTING STEEL</title><date>2002-12-18</date><risdate>2002</risdate><abstract>PROBLEM TO BE SOLVED: To produce sulfur-containing free cutting steel which has excellent machinability, and to provide a method for stably producing the steel. SOLUTION: The sulfur-containing free cutting steel has a composition containing, by weight, 0.03 to 0.55% C, 0.10 to 0.35% Si, 0.3 to 1.5% Mn, 0.01 to 0.15% P, 0.03 to 0.5% S, 0.003 to 0.015% O and <=0.02% N. In the production process for the steel, Al as a deoxidizer and a crystal grain size control agent are not added thereto, and >=20% of nonmetallic inclusions in the steel consist of oxysulfides. The sulfur-containing free cutting steel is produced by adding a wire made of an iron sheet including a mixture containing an alkali metal salt of sulfur oxoacidic anhydride and sulfur power to molten steel, and performing vulcanization and enrichiment of oxygen thereto.</abstract><edition>7</edition><oa>free_for_read</oa></addata></record>
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subjects	ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY METALLURGY OF IRON PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FERROUS METALS
title	SULFUR-CONTAINING FREE CUTTING STEEL, METHOD FOR PRODUCING THE FREE CUTTING STEEL AND METHOD FOR MACHINING THE FREE CUTTING STEEL
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