Abstract：In order to give full play to the advantages and characteristics of high iron grade,low content of impurity elements and large amount of iron oxide scale,and to develop high value-added metal products,this paper adopts vacuum reduction sintering method to prepare 316 porous stainless steel,and determines the appropriate factors affecting the preparation process and porosity. In the research process,a high-temperature vacuum tube furnace was used to reduce and sinter the samples;direct-reading spectroscopy,combined oxygen,hydrogen and nitrogen detectors,X-ray diffraction analyzers,scanning electron microscopes and other equipment were used to determine the chemical composition,phase composition and microstructure of the samples. The morphology was analyzed. The research results show that using rolled steel skin as the main raw material,with reducing agent and other alloy powders,qualified 316 porous stainless steel can be obtained through high-temperature vacuum reduction. The best preparation process is determined to be 10-3Pa vacuum and heat preservation at 1 200 ℃ for 3 h. During the reduction and sintering process,the yield of Mn alloy is only 61%. The prepared sample is a single austenite structure,and at the same time,Cr7C3 is precipitated in the grain,and there is a σ phase precipitation near the grain boundary. The porosity of the sample was increased from 37.26% to 40.27% within 0-3 h of holding time,and the holding time was extended to 4 h,the sintering between the metal particles was more complete,and the porosity was reduced to 35.16%.The billet pressure was increased from 76.43 to 152.87 MPa,the porosity of porous stainless steel decreased from 42.07% to 34.44%,showing a gradual decrease trend. When the sample preparation pressure was greater than 152.87 MPa,segregation of the pore former occurred,causing the porosity to slightly increase to 35.76%. The porosity of porous stainless steel increases by 9.3% for every 10% increase in pore-forming agent ammonium bicarbonate. Through orthogonal test analysis,it is found that the amount of pore former has the most significant effect on the porosity of porous stainless steel,followed by sample preparation pressure,and holding time has the least effect on porosity.
赵立杰, 张芳, 彭军, 常宏涛, 明守禄, 朱瑞宗. 轧钢铁皮制备多孔不锈钢化学成分及孔隙控制[J]. 钢铁, 2022, 57(1): 133-142.
ZHAO Li-jie, ZHANG Fang, PENG Jun, CHANG Hong-tao, MING Shou-lu, ZHU Rui-zong. Chemical composition and pore control of porous stainless steel prepared by rolling steel skin[J]. Iron and Steel, 2022, 57(1): 133-142.
[1] 汤惠萍,谈萍,奚正平,等. 烧结金属多孔材料研究进展[J]. 稀有金属材料与工程,2006,35(s2):428.(TANG Hui-ping,TAN Ping,XI Zheng-ping,et al. Research progress of sintered metal porous materials[J]. Rare Metal Materials and Engineering,2006,35(s2):428.) [2] Selcuk C,Wood J V. Reactives intering of porous tungsten:A cost effective sustain able technique for the manufacturing of high current density cathodest obeused in flash lamps[J]. Journal of Materials Processing Technology,2005,170(2):471. [3] 李洋,陈长军,王晓南,等. 选区激光熔化技术制备316L多孔不锈钢工艺及性能研究[J]. 应用激光,2015,35(3):319.(LI Yang,CHEN Chang-jun,WANG Xiao-nan,et al. Study on the technology and performance of 316L porous stainless steel prepared by selective laser melting technology[J]. Applied Laser,2015,35(3):319.) [4] 张红英,欧阳八生,朱国军. 泡沫铝材料的研究与应用[J]. 粉末冶金技术,2021,39(1):69.(ZHANG Hong-ying,OUYANG Ba-sheng,ZHU Guo-jun. Research and application of foamed aluminum materials[J]. Powder Metallurgy Technology,2021,39(1):69.) [5] 崔新建,刘玉德,石文天,等. 选区激光熔化成形316L不锈钢多孔结构及力学性能[J]. 特种铸造及有色合金,2020,40(1):75.(CUI Xin-jian,LIU Yu-de,SHI Wen-tian,et al. Selected area laser melting forming 316L stainless steel porous structure and mechanical properties[J]. Special Casting and Nonferrous Alloys,2020,40(1):75.) [6] Choy S Y,Sun C N,Leong K F,et al. Compressive properties of functionally graded lattice structures manufactured by selective laser melting[J]. Materials and Design,2017,131(7):112. [7] 蔡茂,高群,宗志坚. 铝合金蜂窝结构轴向压缩吸能特性[J]. 材料科学与工程学报,2015,33(5):675.(CAI Mao,GAO Qun,ZONG Zhi-jian. Axial compression energy absorption characteristics of aluminum alloy honeycomb structure[J]. Journal of Materials Science and Engineering,2015,33(5):675.) [8] 张士卫. 泡沫金属的研究与应用进展[J]. 粉末冶金技术,2016,34(3):222.(ZHANG Shi-wei. Research and application progress of foam metal[J]. Powder Metallurgy Technology,2016,34(3):222.) [9] Dvies G J,Zhen S. Metallic foam:Their production,properities and applications[J]. Journal of Materials Science,1983(18):1899. [10] Selcuk C,Wood J V. Reactive sintering of porous tungsten:A cost effective sustainable technique for the manufacturing of high current density cathodes to be used in flashlamps[J]. Journal of Materials Processing Technology,2005,170(2):471. [11] Banhart J. Manufacture,characterisation and application of cellular metals and metal foams[J]. Progress in Materials Science,2001,46(6):559. [12] 陈祥,李言祥. 金属泡沫材料研究进展[J]. 材料导报,2003(5):5.(CHEN Xiang,LI Yan-xiang. Research progress of metal foam materials[J]. Materials Review,2003(5):5.) [13] 李成刚,单文超,刘怡私,等. 基于热轧全流程氧化铁皮控制的耐蚀性工艺[J]. 钢铁,2021,56(9):129.(LI Cheng-gang,SHAN Wen-chao,LIU Yi-si,et al. Corrosion resistance process based on scale control of the entire hot rolling process[J]. Iron and Steel,2021,56(9):129.) [14] 王畅,于洋,潘辉,等. 高强机械用钢表面条带状红铁皮产生原因及机制[J]. 钢铁,2014,49(9):64.(WANG Chang,YU Yang,PAN Hui,et al. Causes and mechanisms of striped red iron on the surface of high-strength mechanical steel[J]. Iron and Steel,2014,49(9): 64.) [15] 张赵宁,孔宁,张杰,等. Fe-Si合金钢氧化铁皮的结构对酸洗行为的影响[J]. 中国冶金,2018,28(9):28.(ZHANG Zhao-ning,KONG Ning,ZHANG Jie,et al. The effect of the structure of Fe-Si alloy steel oxide scale on the pickling behavior[J]. China Metallurgy,2018,28(9):28.) [16] 樊雷,叶姜. 冷轧搪瓷钢搪烧后氧化铁皮剥落原因分析[J]. 中国冶金,2018,28(4):31.(FAN Lei,YE Jiang. Analysis of the reasons for the oxide scale spalling after enameling of cold rolled enamel steel[J]. China Metallurgy,2018,28(4):31.) [17] 王莉,曹盛,闫占辉,等. 炼钢厂含铁固体废弃物资源化回收利用[J]. 中国冶金,2018,28(3):73.(WANG Li,CAO Sheng,YAN Zhan-hui,et al. Recycling and utilization of iron-containing solid wastes in steel plants[J]. China Metallurgy,2018,28(3):73.) [18] 肖敏,邱小英,蓝桥发. 高磷鲕状赤铁矿金属化还原焙烧-磁选-熔分新工艺研究[J]. 矿产综合利用,2020(5):87.(XIAO Min,QIU Xiao-ying,LAN Qiao-fa. Research on the new process of metallization reduction roasting-magnetic separation-melting of high-phosphorus oolitic hematite[J]. Comprehensive Utilization of Mineral Resources,2020(5):87.) [19] 吕凯辉. 氧化铁皮在炼钢厂的应用实践[J]. 中国冶金,2017,27(3):45.(LÜ Kai-hui. Application practice of iron oxide scale in steelmaking plant[J]. China Metallurgy,2017,27(3):45.) [20] 宋金涛,梁日忠,赵艳龙,等. 热轧氧化铁皮用于永磁铁氧体生产的工业共生研究[J]. 磁性材料及器件,2011,42(2):65.(SONG Jin-tao,LIANG Ri-zhong,ZHAO Yan-long,et al. Industrial symbiosis research of hot-rolled iron oxide sheet used in permanent ferrite production[J]. Magnetic Materials and Devices,2011,42(2):65.) [21] 田颖,李运刚. 热轧氧化铁皮综合利用的发展[J]. 冶金能源,2010,29(5):54.(TIAN Ying,LI Yun-gang. Development of comprehensive utilization of hot rolled oxide scale[J]. Metallurgical Energy,2010,29(5):54.) [22] 张朝晖,刘安民,赵福才,等. 氧化铁皮综合利用技术的发展[J]. 钢铁研究,2008(1):59.(ZHANG Zhao-hui,LIU An-min,ZHAO Fu-cai,et al. Development of comprehensive utilization technology of oxide scale[J]. Iron and Steel Research,2008(1):59.) [23] 万恩同,李慕耘,邹明金,等. 连铸铁皮渣的分离与综合利用研究[J]. 武钢技术,2009,47(4):4.(WAN En-tong,LI Mu-yun,ZOU Ming-jin,et al. Separation and comprehensive utilization of continuous cast iron slag[J]. Wugang Technology,2009,47(4):4.) [24] 王鑫,雷鹰,刘瑞,等. 微波还原鲕状赤铁矿中铁晶粒的形核生长机理[J]. 矿产保护与利用,2020,40(4):46.(WANG Xin,LEI Ying,LIU Rui,et al. The nucleation growth mechanism of iron grains in oolitic hematite reduced by microwave[J]. Conservation and Utilization of Mineral Resources,2020,40(4):46.) [25] 张凡. 鲕状赤铁矿配加添加剂高温碳热还原研究[D]. 贵阳:贵州大学,2019.(ZHANG Fan. Study on High Temperature Carbothermic Reduction of Oolitic Hematite with Additives[D]. Guiyang:Guizhou University,2019.) [26] 何文浩. 微波强化鲕状赤铁矿还原脱磷机理研究[D]. 马鞍山:安徽工业大学,2019.(HE Wen-hao. Research on the Mechanism of Microwave-Enhanced Reduction and Dephosphorization of Oolitic Hematite [D]. Ma′anshan:Anhui University of Technology,2019.) [27] 蒋武锋,马腾飞,郝素菊,等. 利用钢渣余热还原含锌粉尘可行性的探讨[J]. 矿产综合利用,2019(6):140.(JIANG Wu-feng,MA Teng-fei,HAO Su-ju,et al. Discussion on the feasibility of using steel slag waste heat to reduce zinc-containing dust[J]. Comprehensive Utilization of Mineral Resources,2019(6):140.) [28] 陈广玉,康嘉龙,刘俊杰,等. 废弃脱硝催化剂直接合金化研究[J]. 钢铁钒钛,2018,39(6):99.(CHEN Guang-yu,KANG Jia-long,LIU Jun-jie,et al. Research on direct alloying of discarded denitration catalysts[J]. Iron and Steel Vanadium and Titanium,2018,39(6):99.) [29] 张涛. 多孔贵金属合金纳米材料的制备及其光学/电催化性能研究[D]. 合肥:中国科学技术大学,2019.(ZHANG Tao. Preparation of Porous Precious Metal Alloy Nanomaterials and Research on its Optical/Electrocatalytic Properties[D]. Hefei:University of Science and Technology of China,2019.) [30] 黎志豪. 去合金化制备铜基催化剂及电催化析氧性能研究[D]. 成都:西南石油大学,2019.(LI Zhi-hao. Dealloying Preparation of Copper-Based Catalysts and Electrocatalytic Oxygen Evolution Performance Research[D]. Chengdu:Southwest Petroleum University,2019.) [31] LI H,FANG X T,LI G F,et al. Investigation on fabrication and capillary performance of multi-scale composite porous wick made by alloying-dealloying method[J]. International Journal of Heat and Mass Transfer,2018,127:145. [32] 方秀梅,连利仙,高希,等. 去合金化制备孔径可控纳米多孔金属研究进展[J]. 中国材料进展,2018,37(11):927.(FANG Xiu-mei,LIAN Li-xian,GAO Xi,et al. Research progress in the preparation of nanoporous metals with controllable pore size by dealloying[J]. Progress in Materials in China,2018,37(11):927.) [33] 韩远昆. 0Cr13多孔不锈钢制备工艺研究[D]. 鞍山:辽宁科技大学,2018.(HAN Yuan-kun. Research on the Preparation Process of 0Cr13 Porous Stainless Steel[D]. Anshan:Liaoning University of Science and Technology,2018.) [34] 刘文朋. 多孔不锈钢制备工艺研究[D]. 鞍山:辽宁科技大学,2017.(LIU Wen-peng. Research on the Preparation Technology of Porous Stainless Steel[D]. Anshan:Liaoning University of Science and Technology,2017.) [35] 尹衍军. 选区激光熔化成形316L不锈钢流动规律及组织、性能研究[D]. 北京:北京科技大学,2019.(YIN Yan-jun. Study on the Flow Law,Structure and Performance of 316L Stainless Steel Formed by Laser Melting in Selected Areas[D]. Beijing:University of Science and Technology Beijing,2019.) [36] 高晓丹. 双相不锈钢中σ相析出及超塑性变形组织演变研究[D]. 北京:北京科技大学,2021.(GAO Xiao-dan. Study on σ phase Precipitation and Superplastic Deformation Microstructure Evolution in Duplex Stainless Steel[D]. Beijing: University of Science and Technology Beijing,2021.) [37] YANG K,WANG J,YANG B J,et al. Fabrication of industrial-scale porous stainless steel embrane tubes and their applications[J]. Journal of Metals,2020,72(12):4576. [38] Llorda-Jurado P J,Chicardi E,Paúl A,et al. Effect of processing parameters on the properties of freeze-cast Ni wick with gradient porosity[J]. Materials and Design,2021,206:1. [39] Öztürk B,Topcu A,Cora Ö N. Influence of processing parameters on the porosity,thermal expansion,and oxidation behavior of consolidated Fe22Cr stainless steel powder[J]. Powder Technology,2021,382,199. [40] SU Shu-lan,RAO Qiu-hua,HE Yue-hui,et al. The effect of porosity on the tensile mechanical properties of FeAl intermetallic porous materials[J]. Transactions of Nonferrous Metals Society of China,2020,30(10):2757. [41] 敖庆波,王建忠,李爱君,等. 金属纤维多孔材料的吸声性能[J]. 稀有金属材料与工程,2017,46(2):387.(AO Qing-bo,WANG Jian-zhong,LI Ai-jun,et al. Sound absorption performance of metal fiber porous materials[J]. Rare Metal Materials and Engineering,2017,46(2):387.)
2022, Vol. 57 
