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 |
熔模精铸件的表面缺陷超过技术要求时，在不影响装配和使用性能的前提下允许焊补。其焊补工艺如下。
①焊补前将缺陷表面清理干净，然后用钻头扩孔，扩孔应成大于90°的坡口，坡口形状视熔模精密铸造件壁厚和缺陷特点而定。渣孔中的夹杂物要全部清理干净，使铸件内部未氧化的金属露出。
②低碳钢铸件焊补前原则上可不予预热，合金钢及ZG45、ZG55等钢件，如壁较薄，较均匀，形状简单且缺陷较小时可不必预热。而对于形状复杂、壁厚相差悬殊或缺陷较大时，应将铸件在焊补前预热到200~300℃。
③铸件的焊补应采用与军工精密铸造件相近牌号的焊条和直流电焊机。
④大的缺陷应采用多层焊补。为减少焊补处过热，尽量用小直径焊条和小电流，间断焊补，在焊缝稍冷后敲掉熔渣，再继续焊补。
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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