Zero-decarburization spheroidizing, annealing and heating process for cold heading steel SWCH35K
The invention discloses a zero-decarburization spheroidizing, annealing and heating process for cold heading steel SWCH35K. The method comprises the following steps: (1) carrying out acid pickling onthe cold heading steel SWCH35K; (2) drying the cold heading steel subjected to acid pickling; (3) put...
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| creator | LIU KUNQUAN |
| description | The invention discloses a zero-decarburization spheroidizing, annealing and heating process for cold heading steel SWCH35K. The method comprises the following steps: (1) carrying out acid pickling onthe cold heading steel SWCH35K; (2) drying the cold heading steel subjected to acid pickling; (3) putting the dried cold heading steel into a spheroidizing and annealing furnace, and introducing nitrogen; (4) raising the temperature of the cold heading steel to 550 DEG C or above in the spheroidizing and annealing furnace, keeping the constant temperature, and conveying protective atmosphere intothe spheroidizing and annealing furnace in the constant temperature process; (5) heating the cold heading steel to 730 DEG C or above again in the spheroidizing and annealing furnace, and keeping theconstant temperature; (6) slowly cooling the cold heading steel after the constant temperature is finished; (7) keeping the temperature of the cold heading steel constant at 700 DEG C; (8) slowly cooling the cold heading steel |
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The method comprises the following steps: (1) carrying out acid pickling onthe cold heading steel SWCH35K; (2) drying the cold heading steel subjected to acid pickling; (3) putting the dried cold heading steel into a spheroidizing and annealing furnace, and introducing nitrogen; (4) raising the temperature of the cold heading steel to 550 DEG C or above in the spheroidizing and annealing furnace, keeping the constant temperature, and conveying protective atmosphere intothe spheroidizing and annealing furnace in the constant temperature process; (5) heating the cold heading steel to 730 DEG C or above again in the spheroidizing and annealing furnace, and keeping theconstant temperature; (6) slowly cooling the cold heading steel after the constant temperature is finished; (7) keeping the temperature of the cold heading steel constant at 700 DEG C; (8) slowly cooling the cold heading steel</description><language>chi ; eng</language><subject>CHEMICAL SURFACE TREATMENT ; CHEMISTRY ; CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS ; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL ; COATING MATERIAL WITH METALLIC MATERIAL ; COATING METALLIC MATERIAL ; DIFFUSION TREATMENT OF METALLIC MATERIAL ; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS ; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL ; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS ; METALLURGY ; METALLURGY OF IRON ; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS</subject><creationdate>2021</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=20210108&DB=EPODOC&CC=CN&NR=112195322A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20210108&DB=EPODOC&CC=CN&NR=112195322A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>LIU KUNQUAN</creatorcontrib><title>Zero-decarburization spheroidizing, annealing and heating process for cold heading steel SWCH35K</title><description>The invention discloses a zero-decarburization spheroidizing, annealing and heating process for cold heading steel SWCH35K. The method comprises the following steps: (1) carrying out acid pickling onthe cold heading steel SWCH35K; (2) drying the cold heading steel subjected to acid pickling; (3) putting the dried cold heading steel into a spheroidizing and annealing furnace, and introducing nitrogen; (4) raising the temperature of the cold heading steel to 550 DEG C or above in the spheroidizing and annealing furnace, keeping the constant temperature, and conveying protective atmosphere intothe spheroidizing and annealing furnace in the constant temperature process; (5) heating the cold heading steel to 730 DEG C or above again in the spheroidizing and annealing furnace, and keeping theconstant temperature; (6) slowly cooling the cold heading steel after the constant temperature is finished; (7) keeping the temperature of the cold heading steel constant at 700 DEG C; (8) slowly cooling the cold heading steel</description><subject>CHEMICAL SURFACE TREATMENT</subject><subject>CHEMISTRY</subject><subject>CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS</subject><subject>COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL</subject><subject>COATING MATERIAL WITH METALLIC MATERIAL</subject><subject>COATING METALLIC MATERIAL</subject><subject>DIFFUSION TREATMENT OF METALLIC MATERIAL</subject><subject>GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS</subject><subject>INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL</subject><subject>MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS</subject><subject>METALLURGY</subject><subject>METALLURGY OF IRON</subject><subject>MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS</subject><fulltext>true</fulltext><rsrctype>patent</rsrctype><creationdate>2021</creationdate><recordtype>patent</recordtype><sourceid>EVB</sourceid><recordid>eNqNirEKwjAURbM4iPoPcbdDEjo4SlAKgouC4FKfyasNhCTkxaVfbxQ_wOke7jlzdr9hjo1FA_nxym6C4mLglMZ6O-smF54bDiEg-IqVLB-xRpVTjgaJ-BAzN9F_hf0IKoien6-6U-1xyWYDeMLVbxdsfdhfdNdgij1SAoMBS69PQkixbZWUO_VP8wa6mDy2</recordid><startdate>20210108</startdate><enddate>20210108</enddate><creator>LIU KUNQUAN</creator><scope>EVB</scope></search><sort><creationdate>20210108</creationdate><title>Zero-decarburization spheroidizing, annealing and heating process for cold heading steel SWCH35K</title><author>LIU KUNQUAN</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-epo_espacenet_CN112195322A3</frbrgroupid><rsrctype>patents</rsrctype><prefilter>patents</prefilter><language>chi ; eng</language><creationdate>2021</creationdate><topic>CHEMICAL SURFACE TREATMENT</topic><topic>CHEMISTRY</topic><topic>CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS</topic><topic>COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL</topic><topic>COATING MATERIAL WITH METALLIC MATERIAL</topic><topic>COATING METALLIC MATERIAL</topic><topic>DIFFUSION TREATMENT OF METALLIC MATERIAL</topic><topic>GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS</topic><topic>INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL</topic><topic>MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS</topic><topic>METALLURGY</topic><topic>METALLURGY OF IRON</topic><topic>MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS</topic><toplevel>online_resources</toplevel><creatorcontrib>LIU KUNQUAN</creatorcontrib><collection>esp@cenet</collection></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext_linktorsrc</fulltext></delivery><addata><au>LIU KUNQUAN</au><format>patent</format><genre>patent</genre><ristype>GEN</ristype><title>Zero-decarburization spheroidizing, annealing and heating process for cold heading steel SWCH35K</title><date>2021-01-08</date><risdate>2021</risdate><abstract>The invention discloses a zero-decarburization spheroidizing, annealing and heating process for cold heading steel SWCH35K. 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| language | chi ; eng |
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| subjects | CHEMICAL SURFACE TREATMENT CHEMISTRY CLEANING OR DEGREASING OF METALLIC MATERIAL BY CHEMICALMETHODS OTHER THAN ELECTROLYSIS COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATIONOR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL COATING MATERIAL WITH METALLIC MATERIAL COATING METALLIC MATERIAL DIFFUSION TREATMENT OF METALLIC MATERIAL GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION INGENERAL MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS |
| title | Zero-decarburization spheroidizing, annealing and heating process for cold heading steel SWCH35K |
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