CN114657449A - 一种ZG13Cr10 Ni Mo1W1VNbN的制造方法 - Google Patents
一种ZG13Cr10 Ni Mo1W1VNbN的制造方法 Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 238000005266 casting Methods 0.000 claims abstract description 28
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000000126 substance Substances 0.000 claims abstract description 15
- 238000010438 heat treatment Methods 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 12
- 238000001514 detection method Methods 0.000 claims abstract description 11
- 238000005496 tempering Methods 0.000 claims abstract description 11
- 238000012360 testing method Methods 0.000 claims abstract description 10
- 229910052786 argon Inorganic materials 0.000 claims abstract description 8
- 230000007547 defect Effects 0.000 claims abstract description 8
- 239000003595 mist Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000003723 Smelting Methods 0.000 claims abstract description 4
- 238000004088 simulation Methods 0.000 claims abstract description 4
- 230000008030 elimination Effects 0.000 claims abstract description 3
- 238000003379 elimination reaction Methods 0.000 claims abstract description 3
- 239000000463 material Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 4
- 238000000137 annealing Methods 0.000 claims description 3
- 230000006641 stabilisation Effects 0.000 claims description 3
- 238000011105 stabilization Methods 0.000 claims description 3
- 238000003466 welding Methods 0.000 claims description 3
- 229910000851 Alloy steel Inorganic materials 0.000 abstract description 9
- 238000005336 cracking Methods 0.000 abstract description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 6
- 238000001816 cooling Methods 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 239000004576 sand Substances 0.000 description 4
- 239000011651 chromium Substances 0.000 description 3
- 239000011572 manganese Substances 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 238000004321 preservation Methods 0.000 description 3
- 230000002035 prolonged effect Effects 0.000 description 3
- 102220040233 rs79219465 Human genes 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 description 2
- 229910052759 nickel Inorganic materials 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 238000006722 reduction reaction Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 229910000519 Ferrosilicon Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- VVTSZOCINPYFDP-UHFFFAOYSA-N [O].[Ar] Chemical compound [O].[Ar] VVTSZOCINPYFDP-UHFFFAOYSA-N 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- UPHIPHFJVNKLMR-UHFFFAOYSA-N chromium iron Chemical compound [Cr].[Fe] UPHIPHFJVNKLMR-UHFFFAOYSA-N 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 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 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000010791 quenching Methods 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 238000010079 rubber tapping Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
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Abstract
本发明涉及汽轮机用的超超高温合金钢,提供一种ZG13Cr10NiMo1W1VNbN的制造方法,主要工艺流程是:设计模具→MAGMA模拟→造型、芯→中频炉加AOD熔炼→控制化学成分→终脱氧→充氩气浇注→热处理→理化检测→无损检测→消除缺陷→终检。关键在于控制化学成分:C=0.12~0.14%、Si=0.30~0.50%、Mn=0.80~1.00%、P≤0.015%、S≤0.010%、Cr=9.20~10.20%、Ni=0.60~0.80%、Mo=0.95~1.05%,W=0.95~1.05%、V=0.17~0.25%、Nb=0.05~0.10%、N=0.03~0.06%、Al≤0.02%、Cu≤0.10%、As≤0.025%、Sn≤0.015%、Sb≤0.001%、[H]≤7ppm、[O]≤90ppm。中频炉粗炼加AOD熔炼,铸件性能热处理用1070士14℃强风水雾正火加740士10℃回火。室温试验力学性能满足Rm=680~850MPa、Rp0.2≥520MPa、A≥15%、Z≥40%、KV2≥16J、HB=210~260HBW、FATT50≤90;高温特久强度:610℃高温载荷应力140MPa状况下持续大于100小时不断裂要求。
Description
技术领域
本发明涉及汽轮机用的超超高温合金钢新材料,提供了一种ZG13Cr10NiMo1W1VNbN的制造方法,其关健是通过控制化学成分,正确运用热处理方法。实现铸件室温试验力学性能达到Rm=745MPa、Rp0.2=585MPa、A=24%、Z=60%、KV2=72J、HB=223HBW、FATT50=70;高温特久强度:610℃高温载荷应力140MPa状况下持续大于100小时不断裂。达到和超过了美标ASME SA-217M C12A高温合金钢标准的要求。提高蠕变强度和韧性,降低热膨胀系数,有更好榫接性能。
背景技术
国际上先进的电力汽轮机属于高端装备,其机体铸件要求有较高的蠕变强度和韧性,热膨胀系数要小,有好的榫接性能。选用ZG13Cr10 Ni Mo1W1VNbN新材料,能达到室温试验力学性能满足Rm=680~850MPa、Rp0.2≥520MPa、A≥15%、Z≥40%、KV2≥16J、HB=210~260HBW、FATT50≤90;高温特久强度:610℃炉中载荷应力140MPa状况下持续大于100小时不断裂的要求。用ZG13Cr10 Ni Mo1W1VNbN新材料,取代其他牌号的超超高温合金钢,是国际上研发先进的汽轮机的基础,更能增长汽轮机装备使用寿命。
发明内容
本发明的目是为了制造汽轮机铸件,具备较高的蠕变强度和韧性,热膨胀系数小,有好的榫接性能,提供了一种ZG13Cr10NiMo1W1VNbN的制造方法,其关健是控制化学成分,正确运用热处理方式,最终实现室温试验力学性能满足Rm=680~850MPa、Rp0.2≥520MPa、A≥15%、Z≥40%、KV2≥16J、HB=210~260HBW、FATT50≤90;高温特久强度:610℃炉中载荷应力140MPa状况下持续大于100小时不变形的要求。有利于在600~610℃、25MPa特殊工况下使用寿命更长。
本发明技术方案为:一种ZG13Cr10NiMo1W1VNbN的制造方法,主要工艺流程是:设计模具→MAGMA模拟→造型、芯→中频炉加AOD炉熔炼→控制化学成分→终脱氧→充氩气浇注→热处理→理化检测→无损检测→消除缺陷→终检,关键是控制化学成分工序,通过改变铸件成分获得新的金相组织;热处理工序,通过对铸件一次完全退火.实现铸件稳定化防开裂,一次强风水雾冷正火,改进了铸件入水冷却速度太快形成裂纹,用油冷淬火成本太大的难题,加一次回火消除应力。
控制化学成分:C=0.12~0.14%、Si=0.30~0.50%、Mn=0.80~1.00%、P≤0.015%、S≤0.010%、Cr=9.20~10.20%、Ni=0.60~0.80%、Mo=0.95~1.05%,W=0.95~1.05%、V=0.17~0.25%、Nb=0.05~0.10%、N=0.03~0.06%、Al≤0.02%、Cu≤0.10%、As≤0.025%、Sn≤0.015%、Sb≤0.001%、[H]≤7ppm、[O]≤90ppm。控制[H]≤7ppm、[O]≤90ppm的方法。是在AOD炉中精炼加硅钙脱氧剂终脱氧,充氩气强烈还原反应,在浇包上,砂型腔内充氩气保护,降低[H]、[O]含量。
热处理方式:铸件稳定化采用一次1050士14℃完全退火.性能处理采用一次1070士14℃强风水雾冷正火后8小时内一次740士10℃回火,有铸造缺陷在焊补后消除应力采用一次710士10℃回火。用额定20吨1200℃台车式智能电炉,经炉温均衡性检测合格,炉膛内各检点温差≤士14℃对铸件完全退火、正火处理,铸件≤250℃入炉,升温速度≤150℃/时,到温度后保温时间根据铸件最大壁厚每25.4mm延长1小时,1050士14℃完全退火保温后,随炉冷却速度≤50℃/时,≤500℃时出炉空冷,正火1070士14℃保温后出炉在强风水雾冷却至室温,用额定20吨800℃台车式智能电炉,经炉温均衡性检测合格,炉膛内各检点温差≤士10℃对铸件回火处理,铸件≤250℃入炉,升温速度≤150℃/时,到温度后保温时间根据铸件最大壁厚每25.4mm延长1小时,740士10℃回火保温后随炉冷却速度≤50℃/时,≤350℃时出炉空冷。有铸造缺陷在焊补后消除应力采用一次710士10℃回火,方法同上。铸件经性能热处理后,室温试验力学性能满足Rm=680~850MPa、Rp0.2≥520MPa、A≥15%、Z≥40%、KV2≥16J、HB=210~260HBW、FATT50≤90;高温特久强度;610℃炉中载荷应力140MPa状况下持续大于100小时不断裂的要求。大大提高了力学性能,适应现代汽轮机工业发展的需求。
本发明的积极效果是:
实现铸件有害元素P=0.017%、S=0.001%、Al=0.002%、Cu=0.036%、As=0.003%、Sn=0.002%、Sb=0.001%、[H]=3ppm、[O]=70ppm。室温试验力学性能达到Rm=745MPa、Rp0.2=585MPa、A=24%、Z=60%、KV2=72J、HB=223HBW、FATT50=70;高温特久强度:610℃高温载荷应力140MPa状况下持续大于100小时不断裂。达到和超过了美标ASMESA-217M C12A高温合金钢标准的要求。
具体实施方式
制造大型ZG13Cr10 Ni Mo1W1VNbN超超高温合金钢新材料时,根据客户图纸设计模具及工艺系统,用MAGMA模拟验证工艺,碱酚醛树脂砂造型、芯,合箱后用180~200℃烘烤砂型、芯,用中频炉粗炼炉料时炉底充氩保护,加结渣剂覆盖钢水表面,隔绝空气防氧化,需加金属炉料均烘烤到≥500℃,镍板、金属铬要烘烤到≥800℃,加料顺序先加纯铁、金属锰、金属硅,最后加入镍板、金属铬铁,减少氧化和烧损。炉料全部熔清后,先加锰,再加硅铁脱氧,转入AOD精炼,进行氧化、脱磷、脱硫、还原反应,取样检测化学成分符合内控标准后,用0.1~0.2%硅钙进行终脱氧,温度从1620℃降到温度1580℃出钢,冲入氩气保护的浇包,静置3~5min后,浇入充满氩气的砂型腔内。由于铸件易产生裂纹,经清理后,热处理方式:稳定化采用用一次1050士14℃完全退火.性能处理用一次1070士14℃强风水雾冷正火后,在8小时内一次740士10℃回火。理化检测结果,化学成分:C=0.12%、Si=0.35%、Mn=0.8%、P=0.017%、S=0.001%、Cr=9.6%、Ni=0.78%、Mo=1.01%,W=0.98%、V=0.20%、Nb=0.067%、N=0.038%、Al=0.002%、Cu=0.036%、As=0.003%、Sn=0.002%、Sb=0.001%、[H]=3ppm、[O]=70ppm。力学性能:室温试验力学性能达到Rm=745MPa、Rp0.2=585MPa、A=24%、Z=60%、KV2=72J、HB=223HBW、FATT50=70;无损检测采用PT、UT、MT、RT后发现缺陷,用碳棒气刨消除缺陷,进行焊补后消除应力采用一次710士10℃回火。实现铸件室温试验力学性能达到Rm=745MPa、Rp0.2=585MPa、A=24%、Z=60%、KV2=72J、HB=223HBW、FATT50=70;高温特久强度:610℃高温载荷应力140MPa状况下持续大于100小时不断裂。达到和超过了美标ASME SA-217M C12A高温合金钢标准室温试验力学性能满足Rm=585~760MPa、Rp0.2≥415MPa、A≥18%、Z≥45%、HB=210~260HBW的要求。大大提高了超超高温合金钢的韧性达到KV2=72J、FATT50=70。利用本方法可以制造国际上最先进的超超高温合金钢,广泛用于核电、火电、石化行业,610℃高温载荷应力140MPa工况下的设备上。提高蠕变强度和韧性,降低热膨胀系数,有更好榫接性能。铸件经粗加工需要加工的面,进行终检主要是检测三维尺寸、形位公差、表面精度达到图纸技术要求后,涂防锈油入库。
Claims (4)
1.一种ZG13Cr10NiMo1W1VNbN的制造方法,主要工艺流程是:设计模具→MAGMA模拟→造型、芯→中频炉加AOD炉熔炼→控制化学成分→终脱氧→充氩气浇注→热处理→理化检测→无损检测→消除缺陷→终检。
2.根据权利要求1所述的一种ZG13Cr10NiMo1W1VNbN的制造方法,其特征在于控制化学成分:C=0.12~0.14%、Si=0.30~0.50%、Mn=0.80~1.00%、P≤0.015%、S≤0.010%、Cr=9.20~10.20%、Ni=0.60~0.80%、Mo=0.95~1.05%,W=0.95~1.05%、V=0.17~0.25%、Nb=0.05~0.10%、N=0.03~0.06%、Al≤0.02%、Cu≤0.10%、As≤0.025%、Sn≤0.015%、Sb≤0.001%、[H]≤7ppm、[O]≤90ppm。
3.根据权利要求1所述一种ZG13Cr10NiMo1W1VNbN的制造方法,其特征在于热处理方式:铸件稳定化采用一次1050士14℃完全退火,性能处理采用一次1070士14℃强风水雾冷正火后在8小时内一次740士10℃回火,有铸造缺陷在焊补后消除应力采用一次710士10℃回火。
4.根据权利要求1所述一种ZG13Cr10 Ni Mo1W1VNbN的制造方法,其特征在于铸件经性能热处理后,室温试验力学性能满足Rm=680~850MPa、Rp0.2≥520MPa、A≥15%、Z≥40%、KV2≥16J、HB=210~260HBW、FATT50≤90;高温特久强度:610℃炉中载荷应力140MPa状况下持续大于100小时不断裂的要求。
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