CN106939403B - 1Cr9Mo1VNbN材质汽轮机喷嘴渗硼的方法 - Google Patents

1Cr9Mo1VNbN材质汽轮机喷嘴渗硼的方法 Download PDF

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CN106939403B
CN106939403B CN201710078805.1A CN201710078805A CN106939403B CN 106939403 B CN106939403 B CN 106939403B CN 201710078805 A CN201710078805 A CN 201710078805A CN 106939403 B CN106939403 B CN 106939403B
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郭洁
唐公民
陈钊
宫伟兴
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Hadian Power Equipment National Engineering Research Center Co Ltd
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    • C23COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
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    • C23C8/00Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/60Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using solids, e.g. powders, pastes
    • C23C8/62Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals using solids, e.g. powders, pastes only one element being applied
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Abstract

1Cr9Mo1VNbN材质汽轮机喷嘴渗硼的方法,它涉及一种汽轮机喷嘴渗硼的方法。本发明是为了解决现有渗硼工艺后,渗硼层有垂直于渗层的纵向裂纹,裂纹贯穿整个渗层,导致喷嘴渗硼层质量不合格的技术问题。渗硼的方法如下:将工件随炉升温至745±10℃保温3±0.5h,然后继续随炉升温至1000±10℃,保温10±0.5h,随炉经过8~10h冷却至800±5℃,出炉空冷,再700±10℃回火5±0.5h,即完成。喷嘴渗硼层在层深和硬度满足要求的同时,不再有裂纹出现,将产品渗硼层裂纹合格率提高到100%。同时保证了1Cr9Mo1VNbN材质在奥氏体和珠光体两相区出炉空冷,得到了机械性能良好的组织,大大提高了工作效率,节约了能源。

Description

1Cr9Mo1VNbN材质汽轮机喷嘴渗硼的方法
技术领域
本发明涉及一种汽轮机喷嘴渗硼的方法。
背景技术
1Cr9Mo1VNbN材质汽轮机高压一级喷嘴汽道部位需进行渗硼提高其表面硬度,提高耐磨性,耐固体粒子冲蚀从而延长喷嘴使用寿命。然而现有的渗硼工艺渗硼后,渗硼层有垂直于渗层的纵向裂纹,裂纹贯穿整个渗层,导致喷嘴渗硼层质量不合格。
发明内容
本发明是为了解决现有方法渗硼工艺后,渗硼层有垂直于渗层的纵向裂纹,裂纹贯穿整个渗层,导致喷嘴渗硼层质量不合格的技术问题,提供了一种1Cr9Mo1VNbN材质汽轮机喷嘴渗硼的方法。
1Cr9Mo1VNbN材质汽轮机喷嘴渗硼的方法如下:
将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至745±10℃保温3±0.5h,然后继续随炉升温至1000±10℃,保温10±0.5h,随炉经过8~10h冷却至800±5℃,出炉空冷,再700±10℃回火5±0.5h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。
本发明的有益效果是:
1Cr9Mo1VNbN材质汽轮机高压一级喷嘴采用新的渗硼工艺后,喷嘴渗硼层在层深和硬度满足要求的同时,不再有裂纹出现,将产品渗硼层裂纹合格率提高到100%。同时渗硼热处理工艺中升温至1000±10℃,保温10±0.5h,随炉经过8~10h冷却至800±5℃,再出炉空冷,保证了1Cr9Mo1VNbN材质在奥氏体和珠光体两相区出炉空冷,得到了机械性能良好的组织。采用本发明渗硼后1Cr9Mo1VNbN材质汽轮机喷嘴汽道表面获得硬度可达HV100g1359、层深为70-90μm的渗硼层,同时1Cr9Mo1VNbN材质汽轮机喷嘴本体屈服强度可达799MPa,抗拉强度可达907MPa,延伸率可达23%,收缩率可达66%,硬度可达HB221。获得理想深层的同时保证了喷嘴本体力学性能满足使用要求,大大提高了工作效率,节约了能源。
附图说明
图1是具体实施方式十一1Cr9Mo1VNbN材质汽轮机喷嘴渗硼后截面的金相照片;
图2是具体实施方式十1Cr9Mo1VNbN材质汽轮机喷嘴渗硼后截面的金相照片。
具体实施方式
本发明技术方案不局限于以下所列举具体实施方式,还包括各具体实施方式一到方式十之间的任意组合。
具体实施方式一:本实施方式1Cr9Mo1VNbN材质汽轮机喷嘴渗硼的方法如下:
将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至745±10℃保温3±0.5h,然后继续随炉升温至1000±10℃,保温10±0.5h,随炉经过8~10h冷却至800±5℃,出炉空冷,再700±10℃回火5±0.5h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。
具体实施方式二:本实施方式与具体实施方式一不同的是将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至735℃保温2.5h,然后继续随炉升温至990℃,保温9.5h,随炉经过8h冷却至795℃,出炉空冷,再690℃回火4.5h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。其它与具体实施方式一相同。
具体实施方式三:本实施方式与具体实施方式一或二之一不同的是将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至738℃保温2.5h,然后继续随炉升温至992℃,保温9.8h,随炉经过8.2h冷却至798℃,出炉空冷,再695℃回火4.6h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。其它与具体实施方式一或二之一相同。
具体实施方式四:本实施方式与具体实施方式一至三之一不同的是将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至739℃保温2.6h,然后继续随炉升温至995℃,保温10h,随炉经过8.5h冷却至800℃,出炉空冷,再700℃回火4.8h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。其它与具体实施方式一至三之一相同。
具体实施方式五:本实施方式与具体实施方式一至四之一不同的是将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至740℃保温2.7h,然后继续随炉升温至998℃,保温10h,随炉经过9h冷却至801℃,出炉空冷,再701℃回火5h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。其它与具体实施方式一至四之一相同。
具体实施方式六:本实施方式与具体实施方式一至五之一不同的是将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至741℃保温3h,然后继续随炉升温至1000℃,保温10.1h,随炉经过9.2h冷却至802℃,出炉空冷,再703℃回火5.1h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。其它与具体实施方式一至五之一相同。
具体实施方式七:本实施方式与具体实施方式一至六之一不同的是将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至745℃保温3.1h,然后继续随炉升温至1001℃,保温10.2h,随炉经过9.5h冷却至803℃,出炉空冷,再705℃回火5.2h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。其它与具体实施方式一至六之一相同。
具体实施方式八:本实施方式与具体实施方式一至七之一不同的是将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至748℃保温3.2h,然后继续随炉升温至1002℃,保温10.3h,随炉经过9.6h冷却至804℃,出炉空冷,再706℃回火5.3h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。其它与具体实施方式一至七之一相同。
具体实施方式九:本实施方式与具体实施方式一至八之一不同的是将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至750℃保温3.4h,然后继续随炉升温至1005℃,保温10.5h,随炉经过9.8h冷却至805℃,出炉空冷,再709℃回火5±0.5h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。其它与具体实施方式一至八之一相同。
具体实施方式十:本实施方式与具体实施方式一至九之一不同的是将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至755℃保温3.5h,然后继续随炉升温至1010℃,保温10.5h,随炉经过10h冷却至805℃,出炉空冷,再710℃回火5.5h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。其它与具体实施方式一至九之一相同。
具体实施方式十一:本实施方式1Cr9Mo1VNbN材质汽轮机喷嘴渗硼的方法如下:
将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至745℃保温3h,然后继续随炉升温至1000℃,保温10h,出炉空冷,再700℃回火5h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。

Claims (10)

1.1Cr9Mo1VNbN材质汽轮机喷嘴渗硼的方法,其特征在于该方法如下:
将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至745±10℃保温3±0.5h,然后继续随炉升温至1000±10℃,保温10±0.5h,随炉经过8~10h冷却至800±5℃,出炉空冷,再700±10℃回火5±0.5h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。
2.根据权利要求1所述1Cr9Mo1VNbN材质汽轮机喷嘴渗硼的方法,其特征在于将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至735℃保温2.5h,然后继续随炉升温至990℃,保温9.5h,随炉经过8h冷却至795℃,出炉空冷,再690℃回火4.5h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。
3.根据权利要求1所述1Cr9Mo1VNbN材质汽轮机喷嘴渗硼的方法,其特征在于将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至738℃保温2.5h,然后继续随炉升温至992℃,保温9.8h,随炉经过8.2h冷却至798℃,出炉空冷,再695℃回火4.6h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。
4.根据权利要求1所述1Cr9Mo1VNbN材质汽轮机喷嘴渗硼的方法,其特征在于将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至739℃保温2.6h,然后继续随炉升温至995℃,保温10h,随炉经过8.5h冷却至800℃,出炉空冷,再700℃回火4.8h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。
5.根据权利要求1所述1Cr9Mo1VNbN材质汽轮机喷嘴渗硼的方法,其特征在于将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至740℃保温2.7h,然后继续随炉升温至998℃,保温10h,随炉经过9h冷却至801℃,出炉空冷,再701℃回火5h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。
6.根据权利要求1所述1Cr9Mo1VNbN材质汽轮机喷嘴渗硼的方法,其特征在于将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至741℃保温3h,然后继续随炉升温至1000℃,保温10.1h,随炉经过9.2h冷却至802℃,出炉空冷,再703℃回火5.1h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。
7.根据权利要求1所述1Cr9Mo1VNbN材质汽轮机喷嘴渗硼的方法,其特征在于将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至745℃保温3.1h,然后继续随炉升温至1001℃,保温10.2h,随炉经过9.5h冷却至803℃,出炉空冷,再705℃回火5.2h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。
8.根据权利要求1所述1Cr9Mo1VNbN材质汽轮机喷嘴渗硼的方法,其特征在于将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至748℃保温3.2h,然后继续随炉升温至1002℃,保温10.3h,随炉经过9.6h冷却至804℃,出炉空冷,再706℃回火5.3h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。
9.根据权利要求1所述1Cr9Mo1VNbN材质汽轮机喷嘴渗硼的方法,其特征在于将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至750℃保温3.4h,然后继续随炉升温至1005℃,保温10.5h,随炉经过9.8h冷却至805℃,出炉空冷,再709℃回火5±0.5h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。
10.根据权利要求1所述1Cr9Mo1VNbN材质汽轮机喷嘴渗硼的方法,其特征在于将1Cr9Mo1VNbN材质汽轮机喷嘴工件随炉升温至755℃保温3.5h,然后继续随炉升温至1010℃,保温10.5h,随炉经过10h冷却至805℃,出炉空冷,再710℃回火5.5h,即完成1Cr9Mo1VNbN材质汽轮机喷嘴渗硼。
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CN104805398A (zh) * 2015-03-23 2015-07-29 哈尔滨汽轮机厂有限责任公司 一种减小汽轮机喷嘴组渗硼变形的方法

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