Effect of the size distribution and morphology of refractory particle on self-curing time of water-based self-curing casting coatings

Chunyi Zhan; Shengshan Feng; Dong Huang; Shuzhong Xie; Chunjing Liu; Qingqing Bian; Weifeng Wu; Jianli Chen; Jiahao Liang; Yunhua Gao

doi:10.1117/12.2668631

14 February 2023 Effect of the size distribution and morphology of refractory particle on self-curing time of water-based self-curing casting coatings

Chunyi Zhan, Shengshan Feng, Dong Huang, Shuzhong Xie, Chunjing Liu, Qingqing Bian, Weifeng Wu, Jianli Chen, Jiahao Liang, Yunhua Gao

Author Affiliations +

Proceedings Volume 12589, International Conference on Optical Technology, Semiconductor Materials, and Devices (OTSMD 2022); 1258910 (2023) https://doi.org/10.1117/12.2668631
Event: International Conference on Optical Technology, Semiconductor Materials, and Devices (OTSMD 2022), 2022, Longyan, China

Abstract

The self-curing mechanism of water-base self-curing sand-casting coating is described. The relationship between the moisture content and the self-curing time of the coating is analyzed on the basis of the principle of non-isometric ball stacking and verified experimentally. The influence law and cause of the size-distribution and morphology of refractory-aggregate particle on self-curing time of coating is studied based on experiments. The results show that: the moisture content of the coating has an approximate linear relationship with the self-curing time of the coating, the particle-size distribution of refractory-aggregate has a significant effect on the self-curing time, while the particle size has little effect. The particle size of refractory aggregate should be normally distributed with an average particle size of 200 mesh to 325 mesh. The particle morphology of the refractory aggregate also significantly affects self-curing time of the coating, the coating prepared by the powder quartz whose grain shape is similar to the spherical shape has a low moisture content and the coating can cure quickly. The coating with a thickness of 0.5mm can achieve self-curing within 100 minutes under an environmental condition of a relative humidity of 80%±2%, which is expected to meet the production requirements of resin sand casting under high humidity climate conditions in South China.

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Chunyi Zhan, Shengshan Feng, Dong Huang, Shuzhong Xie, Chunjing Liu, Qingqing Bian, Weifeng Wu, Jianli Chen, Jiahao Liang, and Yunhua Gao "Effect of the size distribution and morphology of refractory particle on self-curing time of water-based self-curing casting coatings", Proc. SPIE 12589, International Conference on Optical Technology, Semiconductor Materials, and Devices (OTSMD 2022), 1258910 (14 February 2023); https://doi.org/10.1117/12.2668631

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KEYWORDS

Particles

Moisture

Quartz

Viscosity

Statistical analysis

Liquids

Water

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