At present, the production of heavy-duty lathe locking block has the advantages of low yield, high cost, complex on-site operation process, shrinkage and porosity defects. Based on this situation, the process needs to be improved.
The locking block is a thick wall casting, with a wall thickness of 260mm, a material of HT250, a blank weight of 440kg and an overall dimension φ 260mm × 1100mm。 Castings shall be free of shrinkage porosity, shrinkage cavity, inclusion, air hole and other casting defects.
Through the improvement of process measures, the casting can achieve no riser casting, the quality of this product and similar products meet the requirements, and the yield is improved. Compared with that before the improvement, it not only ensures the casting quality, but also saves the production cost, reduces the operation difficulty and labor intensity of workers, and the process is effectively simplified.