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九格砖又称水泥混凝土小方砖,一般该制品的成型模具,多采用钢板整体焊接或镶内衬方法制造,在使用过程中,由于压力机的作用,砂子、水泥和石子会强烈地与钢模内表面发生摩擦,混凝土成份作为磨料使钢模表面磨损,这种磨损形式在摩擦学中叫做磨粒磨损,或磨料磨损。 为了延长模具的使用寿命,首先要进行模具的失效分析。模具内腔表面磨损后,造成内腔尺寸加大,由于水泥制品的尺寸精度要求±2mm,所以,只要模具单边磨损1mm之后,模具就报废了。通常模具上部的磨损量
Nine-grid brick is also called cement concrete small square brick. Generally, the molding die of this product is mostly made of steel plate as a whole by welding or inlaid lining method. In the process of use, sand, cement and stone will be strongly affected by the action of the press. Friction occurs on the inner surface of the steel mold, and the concrete component acts as an abrasive to cause the surface of the steel mold to wear. This type of wear is called abrasive wear or abrasive wear in tribology. In order to prolong the service life of the mold, the failure analysis of the mold must be performed first. After the surface of the mold cavity is worn, the size of the cavity is increased. Because the dimensional accuracy of the cement product requires ±2mm, the mold is scrapped as long as the mold wears 1mm unilaterally. Usually the upper part of the mold wear