摘要：【中文】本发明公开了一种涡壳砂芯的制作方法，属于涡壳铸造技术领域，砂芯由以下重量份数的组分制备：二氧化硅原砂40‑56份、陶粒砂30‑42份、洛铁矿砂20‑25份、聚乙烯树脂1‑2份、固化剂1.7份、硬脂酸钙1.0‑1.3份。本发明提供一种涡壳砂芯的制作方法，解决了内部结构复杂的涡壳不能开模制作的难题，并且使该类涡壳加工基准面无毛刺，保证了加工精度，提供了产品质量。 【EN】The invention discloses a manufacturing method of a volute sand core, belonging to the technical field of volute casting, wherein the sand core is prepared from the following components in parts by weight: 40-56 parts of silica crude sand, 30-42 parts of ceramsite sand, 20-25 parts of magnetite sand, 1-2 parts of polyethylene resin, 1.7 parts of curing agent and 1.0-1.3 parts of calcium stearate. The invention provides a manufacturing method of a volute sand core, which solves the problem that a volute with a complex internal structure cannot be manufactured by opening a die, and ensures that the processing reference surface of the volute has no burrs, thereby ensuring the processing precision and improving the product quality.