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双辐皮带轮在我厂铸造车间多次铸造,均因工艺方案(方案一)不妥,产生气孔,缩孔缺陷而报废。近二年来我们改变工艺方案,加强工艺管理,有效地克服了产品缺陷,生产出了合格的产品。一、皮带轮的结构特点及技术要求: 1.结构特点: 1)外轮廓尺寸φ434×500mm 2)铸体毛重:388kg 3)结构形式可看作是由两个简单的筒状体(即外部槽部分+内部轮毂)组合而成的。 2.技术要求: 1)铸件应无气孔、砂眼,粘砂及壁厚不均匀现象。 2)机械加工后作静平衡试验,重量偏差
Double-spoke pulley in my foundry foundry repeatedly casting, both due to process solutions (Option One) is not proper, resulting in porosity, shrinkage defects and scrapped. In the past two years, we have changed the process plan, strengthened the process management, effectively overcame the product defects and produced the qualified products. First, the pulley structural characteristics and technical requirements: 1. Structural features: 1) Outline dimensions φ434 × 500mm 2) Casting gross weight: 388kg 3) The structure can be seen as two simple cylindrical body (that is, the external groove Part + internal hub) combined. 2. Technical Requirements: 1) Castings should be non-stomatal, trachoma, sticky sand and uneven wall thickness. 2) Static balance test after machining, weight deviation