郭莉军等：型砂材质与挤压成形工艺对砂型表面性能的影响 ,277· 0.130 0.13 (a) (b) (c) 90.20 0.125 0.11 0.120 0.10 0.09 0.10 0.08 烹005 0.07 0.06 0.100 0.05 0 0.1 0.2 0 0.1 0.2 0 0.1 02 Extrusion pressure/MPa Extrusion pressure/MPa Extrusion pressure/MPa 0.10 0.09 (d) (e) 0.08 0.07 0.08 0.06 0.07 0.05 0.06 0.04 0.05 0.03 0 0.1 0.2 0 0.1 0.2 Extrusion pressure/MPa Extrusion pressure/MPa 图6不同挤压压力、树脂质量分数与砂型表面性能的关系.()树脂质量分数1.6%；(b)树脂质量分数2.0%：(c)树脂质量分数2.4%：(d)树脂质 量分数2.8%：(e)树脂质量分数3.2% Fig.6 Relationship between the surface properties of sand mold and extrusion pressure under varying resin contents:(a)resin content 1.6%;(b)resin content 2.0%;(c)resin content 2.4%;(d)resin content 2.8%;(e)resin content 3.2% 表4不同树脂质量分数砂型的表面性能 [2] Guo L J,Shan Z D.Liu L M.Effect of digital flexible extrusion process on the properties of sand mold.Foundry Technol,2020. Table 4 Surface properties with different mass fraction of resin 41(2):97 Mass fraction of Surface Mass fraction of Surface resin/% properties/g resin/% properties/g (郭莉军，单忠德，刘丽敏.数字化柔性挤压成形工艺对砂型性 1.6 0.708 2.4 0.235 能影响规律研究.铸造技术，2020,41(2)：97) 1.8 0.65 2.6 0.247 [3]Liu F,Shan Z D,Li L,et al.Research on pattemless casting 2.0 0.62 2.8 0.25 technologies for large thin-walled shell pieces.Foundry Technol, 2013,34(10):1324 2.2 0.51 3.0 0.23 (刘丰，单忠德，李柳，等.大型薄壁壳件无模铸造技术研究.铸 造技术，2013.34(10)：1324) 0.7 [4] Josan A,Bretotean C P,Ratiu S.Critical analysis of the influence of the possibilities of establishing the moulding technology on obtaining the castings.IOP Conf Ser Mater Sci Eng,2018,294: 0.5 012038 0.4 [5]Wen S F,Shen Q W.Wei Q S.et al.Material optimization and post-processing of sand moulds manufactured by the selective laser sintering of binder-coated Al2O3 sands.J Mater Process 0.2 Technol,2015,225:93 1.41.61.82.02.22.42.62.83.03.23.43.6 [6] Zhang S,Shan Z D,Gu Z X,et al.Study on path planning and Mass fraction of resin/% process test of molding sand filling sandbox digitally.Foundry, 图7不同树脂质量分数与砂型表面性能的关系 2016,65(8):713 Fig.7 Relationship between the surface properties of sand mold and (张帅，单忠德，顾兆现，等.数字化砂箱型砂填充路径规划及工 resin content 艺试验研究.铸造，2016,65(8)：713) [7] Torielli R M,Abrahams R A,Smillie R W,et al.Using lean 参考文献 methodologies for economically and environmentally sustainable [1]Shan Z D,Qin S Y,Liu Q,et al.Key manufacturing technology foundries.China Foundry,2011,8(1):74 equipment for energy saving and emissions reduction in [8]Huang T Y.Casting Handbook Volume 4 Molding Materials.2nd mechanical equipment industry.Int J Precision Eng Manuf,2012, Ed.Beijing:Machinery Industry Press,2002 13(7):1095 (黄天佑.铸造手册第4卷：造型材料.2版.北京：机械工业出版参    考    文    献 Shan Z D, Qin S Y, Liu Q, et al. Key manufacturing technology & equipment for energy saving and emissions reduction in mechanical equipment industry. Int J Precision Eng Manuf, 2012, 13（7）: 1095 [1] Guo L J, Shan Z D, Liu L M. Effect of digital flexible extrusion process on the properties of sand mold. Foundry Technol, 2020, 41（2）: 97 （郭莉军, 单忠德, 刘丽敏. 数字化柔性挤压成形工艺对砂型性 能影响规律研究. 铸造技术, 2020, 41（2）：97） [2] Liu F, Shan Z D, Li L, et al. Research on patternless casting technologies for large thin-walled shell pieces. Foundry Technol, 2013, 34（10）: 1324 （刘丰, 单忠德, 李柳, 等. 大型薄壁壳件无模铸造技术研究. 铸 造技术, 2013, 34（10）：1324） [3] Josan A, Bretotean C P, Raţiu S. Critical analysis of the influence of the possibilities of establishing the moulding technology on obtaining the castings. IOP Conf Ser Mater Sci Eng, 2018, 294: 012038 [4] Wen S F, Shen Q W, Wei Q S, et al. Material optimization and post-processing of sand moulds manufactured by the selective laser sintering of binder-coated Al2O3 sands. J Mater Process Technol, 2015, 225: 93 [5] Zhang S, Shan Z D, Gu Z X, et al. Study on path planning and process test of molding sand filling sandbox digitally. Foundry, 2016, 65（8）: 713 （张帅, 单忠德, 顾兆现, 等. 数字化砂箱型砂填充路径规划及工 艺试验研究. 铸造, 2016, 65（8）：713） [6] Torielli R M, Abrahams R A, Smillie R W, et al. Using lean methodologies for economically and environmentally sustainable foundries. China Foundry, 2011, 8（1）: 74 [7] Huang T Y. Casting Handbook Volume 4 Molding Materials. 2nd Ed. Beijing: Machinery Industry Press, 2002 （黄天佑. 铸造手册第4卷: 造型材料. 2版. 北京: 机械工业出版 [8] (d) Surface properties/g Extrusion pressure/MPa 0 0.1 0.2 0.10 0.09 0.08 0.07 0.06 0.05 (e) Surface properties/g Extrusion pressure/MPa 0 0.1 0.2 0.09 0.08 0.07 0.06 0.05 0.04 0.03 (a) (b) (c) Surface properties/g Surface properties/g 0.20 0.18 0.16 0 0.1 Extrusion pressure/MPa Extrusion pressure/MPa 0.2 0 0.1 0.2 0.130 0.125 0.120 0.115 0.110 0.105 0.100 Surface properties/g Extrusion pressure/MPa 0 0.1 0.2 0.10 0.11 0.12 0.13 0.09 0.08 0.07 0.06 0.05 图 6 不同挤压压力、树脂质量分数与砂型表面性能的关系. （a）树脂质量分数 1.6%; （b）树脂质量分数 2.0%；（c）树脂质量分数 2.4%；（d）树脂质 量分数 2.8%；（e）树脂质量分数 3.2% Fig.6 Relationship between the surface properties of sand mold and extrusion pressure under varying resin contents: (a) resin content 1.6%; (b) resin content 2.0%; (c) resin content 2.4%; (d) resin content 2.8%; (e) resin content 3.2% 0.7 0.6 0.5 0.4 0.3 0.2 Surface properties/g 1.4 1.6 1.8 2.0 2.2 2.4 2.6 2.8 3.0 3.2 3.4 3.6 Mass fraction of resin/% 图 7 不同树脂质量分数与砂型表面性能的关系 Fig.7 Relationship between the surface properties of sand mold and resin content 表 4 不同树脂质量分数砂型的表面性能 Table 4 Surface properties with different mass fraction of resin Mass fraction of resin/% Surface properties/g Mass fraction of resin/% Surface properties/g 1.6 0.708 2.4 0.235 1.8 0.65 2.6 0.247 2.0 0.62 2.8 0.25 2.2 0.51 3.0 0.23 郭莉军等： 型砂材质与挤压成形工艺对砂型表面性能的影响 · 277 ·