TEL：+86-13567841157
+86-15771805138
+86-18958238181
E-mail：zhiye@zy-casting.com
ycn@zy-casting.com
santos@zy-casting.com
Website：www.zy-casting.com
Address: Xiachen Industrial Zone, ChunhuTown, Fenghua District, Ningbo CityZhejiang Province，China-315538
Process | Silica sol Casting (Green Wax) |
Mold | General Aluminum Mold & Steel Mold |
Mould Materia | Silica sol, Mullite Sand, Zircon Sand |
Mould Shell | Fireproof Coating |
Technology Characteristics | ISuitable for producing small parts. Better precision. Better surface roughness. Can large extent reduce machining. |
Tolerance Range | CT5 to CT6 |
Single Weight | 0.01kgs to 30kgs |
Surface Roughness | RA6.3 |
Casting Material Type | Carbon Steel, Alloy Steel, Stainless Steel, Ductile Iron. |
Common Material Specification | GB, ASTM,SAE,AISI,DIN,BS,JIS,NF,EN,AAR,ISO |
Product application field | Automobile, Engineering Machinery, Railway, Marine, AgriculturalMachinery, Mining and other industrial fields |
精密铸造钢件内部或表面充塞着砂粒的孔眼叫砂眼。砂眼产生的主要原因是有砂粒在制壳过程中从外部掉入，当然也可能来自型壳本身。属于前者的主要原因是脱蜡、焙烧型壳和浇注时操作不慎，使砂粒掉入型壳中；而后者主要是由型壳内表面质量不好所致，如型壳内表面局部酥松剥落，或因模组焊接时质量不好，表面留有沟槽、缝隙，因而使涂料渗入该处，精密铸造加工脱蜡后型壳内表面相应部位，就存在涂料的凸起物（飞刺），浇注时被金属液冲刷脱落而造成的。
防止砂眼的措施如下。
①在脱蜡，焙烧浇注过程中，细心操作防止掉砂。
②严格控制模组焊接质量，视熔模上的内浇口形状选取合适的直浇口棒，使焊接处不存在缝隙或沟槽，以避免型壳内表面出现飞刺。
③最后一层涂料后不予撒砂以减少落入型壳的砂子来源。
Contact information：+86-13567841157
+86-15771805138
E-mail：zhiye@zy-casting.com
ycn@zy-casting.com
Website：www.zy-casting.com
Address: Xiachen Industrial Zone, ChunhuTown, Fenghua District, Ningbo CityZhejiang Province，China-315538
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