CN107058883B - 一种高速列车制动盘合金钢材料及其制备方法 - Google Patents
一种高速列车制动盘合金钢材料及其制备方法 Download PDFInfo
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- 239000000463 material Substances 0.000 title claims abstract description 29
- 229910000851 Alloy steel Inorganic materials 0.000 title claims abstract description 9
- 238000002360 preparation method Methods 0.000 title claims abstract description 9
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 32
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims abstract description 20
- 239000001257 hydrogen Substances 0.000 claims abstract description 16
- 229910052739 hydrogen Inorganic materials 0.000 claims abstract description 16
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 16
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 15
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims abstract description 11
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052799 carbon Inorganic materials 0.000 claims abstract description 11
- 239000001301 oxygen Substances 0.000 claims abstract description 11
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims abstract description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 10
- 239000010955 niobium Substances 0.000 claims abstract description 10
- 229910052758 niobium Inorganic materials 0.000 claims abstract description 10
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000010936 titanium Substances 0.000 claims abstract description 10
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 10
- 229910052720 vanadium Inorganic materials 0.000 claims abstract description 10
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims abstract description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000005864 Sulphur Substances 0.000 claims abstract description 9
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 claims abstract description 8
- 239000011651 chromium Substances 0.000 claims abstract description 8
- 239000010949 copper Substances 0.000 claims abstract description 8
- 229910052698 phosphorus Inorganic materials 0.000 claims abstract description 8
- 239000011574 phosphorus Substances 0.000 claims abstract description 8
- 229910052742 iron Inorganic materials 0.000 claims abstract description 7
- 239000012535 impurity Substances 0.000 claims abstract description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 5
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 5
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims abstract description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims abstract description 5
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims abstract description 5
- 239000004411 aluminium Substances 0.000 claims abstract description 5
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 5
- 229910052802 copper Inorganic materials 0.000 claims abstract description 5
- 229910052750 molybdenum Inorganic materials 0.000 claims abstract description 5
- 239000011733 molybdenum Substances 0.000 claims abstract description 5
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 5
- 239000010703 silicon Substances 0.000 claims abstract description 5
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052721 tungsten Inorganic materials 0.000 claims abstract description 5
- 239000010937 tungsten Substances 0.000 claims abstract description 5
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 5
- 229910017052 cobalt Inorganic materials 0.000 claims abstract description 4
- 239000010941 cobalt Substances 0.000 claims abstract description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 22
- 239000010959 steel Substances 0.000 claims description 22
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 20
- 239000007789 gas Substances 0.000 claims description 12
- 239000010813 municipal solid waste Substances 0.000 claims description 11
- 229910052786 argon Inorganic materials 0.000 claims description 10
- 238000007664 blowing Methods 0.000 claims description 10
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- 230000006698 induction Effects 0.000 claims description 9
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 7
- 239000011572 manganese Substances 0.000 claims description 7
- 229910000926 A-3 tool steel Inorganic materials 0.000 claims description 5
- 229910000604 Ferrochrome Inorganic materials 0.000 claims description 5
- 229910000519 Ferrosilicon Inorganic materials 0.000 claims description 5
- 108010038629 Molybdoferredoxin Proteins 0.000 claims description 5
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 5
- 229910001080 W alloy Inorganic materials 0.000 claims description 5
- HBELESVMOSDEOV-UHFFFAOYSA-N [Fe].[Mo] Chemical compound [Fe].[Mo] HBELESVMOSDEOV-UHFFFAOYSA-N 0.000 claims description 5
- NIBOOWWJLUHQPC-UHFFFAOYSA-N alumane;argon Chemical compound [AlH3].[Ar] NIBOOWWJLUHQPC-UHFFFAOYSA-N 0.000 claims description 5
- 229910052787 antimony Inorganic materials 0.000 claims description 5
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 5
- 229910052797 bismuth Inorganic materials 0.000 claims description 5
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 5
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 claims description 5
- 238000006477 desulfuration reaction Methods 0.000 claims description 5
- 150000002431 hydrogen Chemical class 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 5
- 239000002893 slag Substances 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 229910052718 tin Inorganic materials 0.000 claims description 5
- 229910000616 Ferromanganese Inorganic materials 0.000 claims description 4
- 235000019738 Limestone Nutrition 0.000 claims description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 4
- DALUDRGQOYMVLD-UHFFFAOYSA-N iron manganese Chemical compound [Mn].[Fe] DALUDRGQOYMVLD-UHFFFAOYSA-N 0.000 claims description 4
- 239000006028 limestone Substances 0.000 claims description 4
- 229910052748 manganese Inorganic materials 0.000 claims description 4
- 235000015173 baked goods and baking mixes Nutrition 0.000 claims description 3
- 238000005336 cracking Methods 0.000 abstract description 8
- 239000000203 mixture Substances 0.000 abstract description 7
- 239000000126 substance Substances 0.000 abstract description 6
- 230000002929 anti-fatigue Effects 0.000 abstract description 5
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 abstract description 2
- 238000000034 method Methods 0.000 abstract description 2
- 238000012360 testing method Methods 0.000 description 11
- 238000004519 manufacturing process Methods 0.000 description 10
- 238000005516 engineering process Methods 0.000 description 7
- 238000002844 melting Methods 0.000 description 7
- 230000008018 melting Effects 0.000 description 7
- 238000002474 experimental method Methods 0.000 description 4
- 230000008676 import Effects 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910020641 Co Zr Inorganic materials 0.000 description 3
- 229910000881 Cu alloy Inorganic materials 0.000 description 3
- 208000037656 Respiratory Sounds Diseases 0.000 description 3
- 238000007670 refining Methods 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 238000009661 fatigue test Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229910001208 Crucible steel Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
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Classifications
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C5/00—Manufacture of carbon-steel, e.g. plain mild steel, medium carbon steel or cast steel or stainless steel
- C21C5/52—Manufacture of steel in electric furnaces
- C21C5/5241—Manufacture of steel in electric furnaces in an inductively heated furnace
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/06—Deoxidising, e.g. killing
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/04—Removing impurities by adding a treating agent
- C21C7/064—Dephosphorising; Desulfurising
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21C—PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OF WROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS
- C21C7/00—Treating molten ferrous alloys, e.g. steel, not covered by groups C21C1/00 - C21C5/00
- C21C7/10—Handling in a vacuum
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C33/00—Making ferrous alloys
- C22C33/04—Making ferrous alloys by melting
- C22C33/06—Making ferrous alloys by melting using master alloys
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/02—Ferrous alloys, e.g. steel alloys containing silicon
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- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/06—Ferrous alloys, e.g. steel alloys containing aluminium
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- C22C38/00—Ferrous alloys, e.g. steel alloys
- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/42—Ferrous alloys, e.g. steel alloys containing chromium with nickel with copper
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
- C22C38/44—Ferrous alloys, e.g. steel alloys containing chromium with nickel with molybdenum or tungsten
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
- C22C38/40—Ferrous alloys, e.g. steel alloys containing chromium with nickel
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- C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
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Abstract
本发明涉及一种高速列车制动盘合金钢材料及其制备方法,其解决了现有材料延伸率、材料的冲击功、抗疲劳、抗裂纹性能有待进一步提高的技术问题,其化学组份为碳、硅、锰、铬、镍、钼、钒、钛、铌、钨、铝、铜、锆、钴、磷、硫、氧、氮、氢及铁和微量杂质。本发明同时公布了其制备方法。本发明可广泛用于高速列车制动盘合金钢材料的制备领域。
Description
技术领域
本发明涉及金属材料领域,具体地说涉及一种高速列车制动盘合金钢材料及其制备方法。
背景技术
目前,国内使用的高速列车制动盘,是高速列车主要的消耗件,主要依靠进口。高速列车制动盘存在不耐磨、韧性差、易产生裂纹,使用周期短,成本高等缺点。
公开号为CN 103215523 A的中国发明专利申请公开了一种高速列车合金铸钢制动盘材料及熔炼工艺,由铁、碳、硅、锰、铬、镍、钼、钒、铌、钨、钛、铝、铜、锆、磷、硫等组成,制动盘的化学组分的重量百分比为:0.25—0.28C、0.48—0.52Si、1—1.03Mn、0.8—0.85Cr、0.95—1Ni、0.54—0.6Mo、0.07—0.08V、0.05—0.06Nb、0.005—0.01W、<0.01Ti、<0.02Al、0.01—0.015Co、0.07—0.09Cu、0.01—0.02Zr、0.007P、0.007S,其余为Fe和不可避免的微量杂质。将各组分按配比混合,通过酸性的高频或中频感应电炉进行熔炼。该发明通过热处理后的工件,其硬度是HRC39—45,抗拉强度1100—1200MPa,屈服强度1000—1100MPa,具有良好的冲击韧性和良好的耐磨性,且生产成本低,可铸造性能好。
该发明采用优质钢锭,在中频炉中熔炼,控制磷、硫的含量,达到所需要的机械性能,其延伸率≥6.5%,材料的冲击功为≥17%,材料的抗疲劳、抗裂纹性能有待进一步提高,成本也较高。
发明内容
本发明就是为了解决现有材料延伸率、材料的冲击功、抗疲劳、抗裂纹性能有待进一步提高、成本较高的技术问题,提供一种材料延伸率、冲击功、抗疲劳、抗裂纹性能都有显著提高、成本较低的高速列车制动盘合金钢材料及其制备方法。
为此,本发明提供一种高速列车制动盘合金钢材料,其化学组份的重量百分比为:碳0.2~0.28、硅0.3~0.6、锰0.6~1.4、铬0.8~1.3、镍0.85~1.5、钼0.55~1.05、钒0.07~0.08、钛<0.01、铌0.05~0.06、钨0.005~0.01、铝≤0.03、铜0.07~0.09、锆0.01~0.02、钴0.01~0.015、磷≤0.01、硫≤0.01、氧≤0.003、氮≤0.007、氢≤0.00025,余量为铁和微量杂质。
本发明同时提供一种高速列车制动盘合金钢材料的制备方法,其包括如下步骤:步骤1:将A3钢材下脚料,装入中频感应电炉,同时加入JSS2#脱磷剂,脱磷剂的加入量占钢水重量的1.5%,通电熔化;步骤2:当温度达到1550℃~1560℃,加入碳、铬铁、镍、钼铁;步骤3:当温度达到1590℃~1600℃,加入硅铁、锰铁,取样化验成分;步骤4:当温度达到1640℃~1650℃,扒渣出炉,转入LF炉;步骤5:在LF炉中,加入石灰石造还原性渣,吹氩气,除去夹杂物,去氧、去硫、去磷;测温、取样化验,加入合金,调整成分;继续升温至1670~1690℃,喂丝机加硅钙线,脱氧;步骤6:转入VOD炉,吹氩气,抽真空,在真空状态下有效去除钢中的氮、氢、夹杂物及部分有害元素铅、锑、铋、锡,使钢水纯净;步骤7:保真空66.7Pa,加入预先烘烤好的钒、钛、铌、钨合金,测温、取样化验,微调成分;步骤8:测温、取样测氧、氮、氢的含量;步骤9:成分、温度符合后,加铝吹氩搅拌几分钟后,破真空浇注;各组分的重量百分比为:碳0.2~0.28、硅0.3~0.6、锰0.6~1.4、铬0.8~1.3、镍0.85~1.5、钼0.55~1.05、钒0.07~0.08、钛<0.01、铌0.05~0.06、钨0.005~0.01、铝≤0.03、铜0.07~0.09、锆0.01~0.02、钴0.01~0.015、磷≤0.01、硫≤0.01、氧≤0.003、氮≤0.007、氢≤0.00025,余量为铁和微量杂质。
本发明工艺操作简单,通过热处理后的制动盘,硬度是HBW290~360,抗拉强度≥1050MPa,屈服强度≥900MPa,延伸率≥8%,冲击功KV2≥27J,具有良好的综合机械性能;本发明中,原料经过LF、VOD炉精炼后,夹杂物的含量大大降低,氧小于30ppm、氢小于2.5ppm、氮小于70ppm,提高了钢水的纯净度,提高工件的耐磨性、冲击韧性、抗裂纹性能;本发明材料来源广泛,成分范围可以变宽,降低了生产成本。
具体实施方式
根据下述实施例,可以更好地理解本发明。然而,本领域的技术人员容易理解,实施例所描述的内容仅用于说明本发明,而不应当也不会限制权利要求书中所描述的本发明。
实施例1
用5000Kg的中频感应电炉熔炼钢水,制造工艺步骤为:1:将A3钢材下脚料,装入300HZ中频感应电炉,同时加入中科院金属研究所研发生产的JSS2#脱磷剂,脱磷剂的加入量占钢水重量的1.5%,通电熔化。2:随着炉料的熔化,不断捣打炉料,避免炉料搭桥。升温达到1550℃~1560℃,加入碳、铬铁、镍、钼铁。3:当温度达到1590℃~1600℃,加入硅铁、锰铁,取样化验成分。4:当温度达到1640℃~1650℃,出炉,转入LF炉。5:在LF炉中,加入石灰石等造还原性渣,吹氩气,除去夹杂物,去氧、去硫、去磷;测温、取样化验,加入合金,调整成分;继续升温至1670~1690℃,喂丝机加硅钙线,脱氧。6:转入VOD炉,吹氩气,抽真空,在真空状态下有效去除钢中的氮、氢、夹杂物及部分有害元素铅、锑、铋、锡等,使钢水纯净。7:保真空66.7Pa,加入预先烘烤好的钒、钛、铌、钨合金,测温、取样化验,微调成分。8:测温、取样测氧、氮、氢的含量。9:成分、温度符合后,加铝吹氩搅拌几分钟后,破真空浇注。
本发明高铁制动盘的化学成分见表1,力学性能见表2:
表1
元素 | C | Si | Mn | Cr | Ni | Mo | V | Ti | Nb | W |
成分 | 0.21 | 0.35 | 0.68 | 0.85 | 0.87 | 0.56 | 0.07 | 0.005 | 0.052 | 0.005 |
元素 | Cu | Co | Zr | P | S | O | N | H | Al | Fe |
成分 | 0.071 | 0.011 | 0.011 | 0.009 | 0.008 | 0.0027 | 0.0065 | 0.00023 | 0.03 | 余量 |
表2
实施例2
用8000Kg的中频感应电炉熔炼钢水,制造工艺步骤为:1:将A3钢材下脚料,装入300HZ中频感应电炉,同时加入JSS2#脱磷剂,脱磷剂的加入量占钢水重量的1.5%,通电熔化。2:随着炉料的熔化,不断捣打炉料,避免炉料搭桥。升温达到1550℃~1560℃,加入碳、铬铁、镍、钼铁。3:当温度达到1590℃~1600℃,加入硅铁、锰铁,取样化验成分。4:当温度达到1640℃~1650℃,出炉,转入LF炉。5:在LF炉中,加入石灰石等造还原性渣,吹氩气,除去夹杂物,去氧、去硫、去磷;测温、取样化验,加入合金,调整成分;继续升温至1670~1690℃,喂丝机加硅钙线,脱氧。6:转入VOD炉,吹氩气,抽真空,在真空状态下有效去除钢中的氮、氢、夹杂物及部分有害元素铅、锑、铋、锡等,使钢水纯净。7:保真空66.7Pa,加入预先烘烤好的钒、钛、铌、钨合金,测温、取样化验,微调成分。8:测温、取样测氧、氮、氢的含量。9:成分、温度符合后,加铝吹氩搅拌几分钟后,破真空浇注。
本发明高铁制动盘的化学成分见表3,力学性能见表4:
表3
元素 | C | Si | Mn | Cr | Ni | Mo | V | Ti | Nb | W |
成分 | 0.25 | 0.48 | 0.95 | 1.02 | 1.13 | 0.72 | 0.075 | 0.007 | 0.056 | 0.008 |
元素 | Cu | Co | Zr | P | S | O | N | H | Al | Fe |
成分 | 0.082 | 0.013 | 0.016 | 0.007 | 0.006 | 0.0021 | 0.0050 | 0.00021 | 0.02 | 余量 |
表4
力学性能 | 抗拉强度Mpa | 屈服强度Mpa | 延伸率% | 冲击功KV2 J | 硬度HBW |
实例1 | 1089 | 947 | 9.2 | 28.5 | 337 |
实施例3
用15000Kg的中频感应电炉熔炼钢水,制造工艺步骤为:1:将A3钢材下脚料,装入300HZ中频感应电炉, 同时加入JSS2#脱磷剂,脱磷剂的加入量占钢水重量的1.5%,通电熔化。2:随着炉料的熔化,不断捣打炉料,避免炉料搭桥。升温达到1550℃~1560℃,加入碳、铬铁、镍、钼铁。3:当温度达到1590℃~1600℃,加入硅铁、锰铁,取样化验成分。4:当温度达到1640℃~1650℃,出炉,转入LF炉。5:在LF炉中,加入石灰石等造还原性渣,吹氩气,除去夹杂物,去氧、去硫、去磷;测温、取样化验,加入合金,调整成分;继续升温至1670~1690℃,喂丝机加硅钙线,脱氧。6:转入VOD炉,吹氩气,抽真空,在真空状态下有效去除钢中的氧、氮、氢、夹杂物及部分有害元素铅、锑、铋、锡等,使钢水纯净。7:保真空66.7Pa,加入预先烘烤好的钒、钛、铌、钨合金,测温、取样化验,微调成分。8:测温、取样测氮、氢的含量。9:成分、温度符合后,加铝吹氩搅拌几分钟后,破真空浇注。
本发明高铁制动盘的化学成分见表5,力学性能见表6:
表5
元素 | C | Si | Mn | Cr | Ni | Mo | V | Ti | Nb | W |
成分 | 0.28 | 0.58 | 1.38 | 1.29 | 1.46 | 1.05 | 0.08 | 0.009 | 0.059 | 0.009 |
元素 | Cu | Co | Zr | P | S | O | N | H | Al | Fe |
成分 | 0.089 | 0.015 | 0.02 | 0.006 | 0.005 | 0.0015 | 0.0038 | 0.00018 | 0.025 | 余量 |
表6
力学性能 | 抗拉强度Mpa | 屈服强度Mpa | 延伸率% | 冲击功KV2J | 硬度HBW |
实例1 | 1131 | 1045 | 8.4 | 27.7 | 352 |
本发明通过电炉熔炼,再经过LF+VOD精炼炉相配合,可以把钢中的有害元素脱除到如下范围:
表7
元素 | [O] | [H] | [N] | [P] | [S] |
范围×10~4 | ≤30 | ≤2.5 | ≤70 | ≤100 | ≤100 |
表8制动性能方面的数据:
表8制动盘与进口铜合金制动片匹配台架试验结果
利用限定的制动盘材料成分和先进的生产工艺得到的制动盘,与进口铜合金制动片配套装在台架试验机上,进行台架试验,通过先期的磨合试验,常用停车制动试验、紧急停车制动试验、连续制动试验和静摩擦试验,结果证明铸造所得的制动盘与进口铜合金制动片匹配良好,制动性能优良,能充分保证刹车时的有效性和安全性,各项技术指标达到“高速动车组制动盘技术”要求,其制动性能能满足200Km/h至350Km/h高速列车运行要求。
对比例
将本发明与专利号为:ZL 2013 1 0055205.5的中国发明专利(以下称原发明)进行对比,本发明与原发明的区别在于:原发明采用优质钢锭,在中频炉中熔炼,控制磷、硫的含量,达到所需要的机械性能。
本发明采用普通钢材下脚料,在中频炉中脱磷,然后经过LF+VOD炉,精炼去气,控制磷、硫的含量,特别是控制氧、氮、氢及杂质的含量,具有良好的综合机械性能,特别是延伸率、冲击功明显提高。
原发明材料的延伸率≥6.5%,现发明材料延伸率≥8%;原发明材料的冲击功为≥17%,现发明材料的冲击功为≥27%,提高了材料的抗疲劳、抗裂纹性能。
表9所示为本发明与原发明冷热疲劳试验结果,模拟制动盘使用状况,将同样缺口的本发明试样和原发明试样加热到620℃,快速放入20℃的水中,如此反复进行试验500次后,在金相显微镜下看缺口裂纹扩展情况。表中的数据表明,本发明的裂纹扩展性能明显低于原发明。
表9本发明与原发明冷热疲劳试验结果对比
试样 | 缺口裂纹长度 |
本发明 | 0.26 |
原发明 | 0.41 |
表10所示为本发明与原发明抗裂纹试验结果,按照使用状态的制动动力试验台制动试验,直到裂纹的产生,记录制动试验次数。表中的数据表明,本发明的抗裂纹性能明显优于原发明。
表10本发明与原发明抗裂纹性能试验结果对比
试样 | 产生裂纹的制动次数 |
本发明 | 3560 |
原发明 | 2740 |
通过上述试验,本发明通过中频炉熔炼脱磷、硫,再加上LF炉二次精炼和VOD炉真空去气,提高钢水的纯净度和控制钢水中气体含量,提高材料的综合机械性能,克服以往材料的强度高,塑性、韧性明显下降的不足,与原发明对比,盘的机械性能明显提高。
与原发明对比,合金的成分范围变宽,且容易控制;钢水流动性好,成型能力好;成分均匀,气体、夹杂物含量少,裂纹倾向小;材料来源广泛,有利于生产过程控制,生产效率高,降低了制造成本,节能降耗,增加了社会效益。
Claims (1)
1.一种高速列车制动盘合金钢材料的制备方法,其特征是包括如下步骤:
步骤1:将A3钢材下脚料,装入中频感应电炉,同时加入脱磷剂,脱磷剂的加入量占钢水重量的1.5%,通电熔化;
步骤2:当温度达到1550℃~1560℃,加入碳、铬铁、镍、钼铁;
步骤3:当温度达到1590℃~1600℃,加入硅铁、锰铁,取样化验成分;
步骤4:当温度达到1640℃~1650℃,扒渣出炉,转入LF炉;
步骤5:在LF炉中,加入石灰石造还原性渣,吹氩气,除去夹杂物,去氧、去硫、去磷;测温、取样化验,加入合金,调整成分;继续升温至1670~1690℃,喂丝机加硅钙线,脱氧;
步骤6:转入VOD炉,吹氩气,抽真空,在真空状态下有效去除钢中的氮、氢、夹杂物及部分有害元素铅、锑、铋、锡,使钢水纯净;
步骤7:保真空66.7Pa,加入预先烘烤好的钒、钛、铌、钨合金,测温、取样化验,微调成分;
步骤8:测温、取样测氧、氮、氢的含量;
步骤9:成分、温度符合后,加铝吹氩搅拌几分钟后,破真空浇注;
各组分的重量百分比为:碳0.2~0.28、硅0.3~0.6、锰0.6~1.4、铬0.8~1.3、镍0.85~1.5、钼0.55~1.05、钒0.07~0.08、钛<0.01、铌0.05~0.06、钨0.005~0.01、铝≤0.03、铜0.07~0.09、锆0.01~0.02、钴0.01~0.015、磷≤0.01、硫≤0.01、氧≤0.003、氮≤0.007、氢≤0.00025,余量为铁和微量杂质。
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