Thermoforming steel capable of improving 1800 MPa grade delayed cracking resistance and production method
The invention relates to an improved 1800MPa grade delayed cracking resistant hot forming steel, which comprises the following components in percentage by weight: 0.20 to 0.40 percent of C, 1.30 to 1.70 percent of Si, 0.95 to 1.5 percent of Mn, less than or equal to 0.005 percent of P, less than or...
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| creator | XIAO HOUNIAN HU KUANHUI CHEN YONG HE JIA LANG FENGJUN CHENG PENG LI JIANGWEN PANG TAO MA YING |
| description | The invention relates to an improved 1800MPa grade delayed cracking resistant hot forming steel, which comprises the following components in percentage by weight: 0.20 to 0.40 percent of C, 1.30 to 1.70 percent of Si, 0.95 to 1.5 percent of Mn, less than or equal to 0.005 percent of P, less than or equal to 0.003 percent of S, 0.020 to 0.040 percent of A1s, 0.007 to 0.013 percent of Ti, 0.002 to 0.005 percent of B, less than or equal to 0.004 percent of N, 0.025 to 0.040 percent of N, 0.20 to 0.40 percent of Cr and the balance of Fe. The production method comprises molten iron desulphurization; smelting is conducted; performing LF refining; performing RH vacuum treatment; softly blowing argon; casting to form a blank; heating the casting blank; performing finish rolling after conventional rough rolling; coiling after laminar cooling; performing cold rolling after conventional acid pickling; annealing is conducted; blanking is conducted; performing hot stamping forming; and naturally cooling to room temperatur |
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The production method comprises molten iron desulphurization; smelting is conducted; performing LF refining; performing RH vacuum treatment; softly blowing argon; casting to form a blank; heating the casting blank; performing finish rolling after conventional rough rolling; coiling after laminar cooling; performing cold rolling after conventional acid pickling; annealing is conducted; blanking is conducted; performing hot stamping forming; and naturally cooling to room temperatur</description><language>chi ; eng</language><subject>ALLOYS ; CHEMISTRY ; FERROUS OR NON-FERROUS ALLOYS ; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS ; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS ; METALLURGY ; METALLURGY OF IRON ; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS ; 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</subject><creationdate>2022</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=20220909&DB=EPODOC&CC=CN&NR=115029630A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,776,881,25542,76290</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20220909&DB=EPODOC&CC=CN&NR=115029630A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>XIAO HOUNIAN</creatorcontrib><creatorcontrib>HU KUANHUI</creatorcontrib><creatorcontrib>CHEN YONG</creatorcontrib><creatorcontrib>HE JIA</creatorcontrib><creatorcontrib>LANG FENGJUN</creatorcontrib><creatorcontrib>CHENG PENG</creatorcontrib><creatorcontrib>LI JIANGWEN</creatorcontrib><creatorcontrib>PANG TAO</creatorcontrib><creatorcontrib>MA YING</creatorcontrib><title>Thermoforming steel capable of improving 1800 MPa grade delayed cracking resistance and production method</title><description>The invention relates to an improved 1800MPa grade delayed cracking resistant hot forming steel, which comprises the following components in percentage by weight: 0.20 to 0.40 percent of C, 1.30 to 1.70 percent of Si, 0.95 to 1.5 percent of Mn, less than or equal to 0.005 percent of P, less than or equal to 0.003 percent of S, 0.020 to 0.040 percent of A1s, 0.007 to 0.013 percent of Ti, 0.002 to 0.005 percent of B, less than or equal to 0.004 percent of N, 0.025 to 0.040 percent of N, 0.20 to 0.40 percent of Cr and the balance of Fe. 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The production method comprises molten iron desulphurization; smelting is conducted; performing LF refining; performing RH vacuum treatment; softly blowing argon; casting to form a blank; heating the casting blank; performing finish rolling after conventional rough rolling; coiling after laminar cooling; performing cold rolling after conventional acid pickling; annealing is conducted; blanking is conducted; performing hot stamping forming; and naturally cooling to room temperatur</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | ALLOYS CHEMISTRY FERROUS OR NON-FERROUS ALLOYS GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS METALLURGY METALLURGY OF IRON MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS 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 | Thermoforming steel capable of improving 1800 MPa grade delayed cracking resistance and production method |
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