48results about How to "Eliminate casting stress" patented technology

This invention belongs to the field of casting cutting technology, and mainly relates to a cutting method for preventing cracking of nickel-based superalloy castings. It changes the cutting process and process control parameters in existing technologies, providing a complete and effective cutting method. It strictly controls the parameter values ​​of key nodes in each cutting step, avoiding the casting from passing through the brittle phase precipitation temperature range, improving the casting's plasticity and toughness, reducing stress, and preventing crack formation. The casting undergoes annealing after molding to eliminate casting stress, providing a better cutting condition for subsequent riser cutting. The cutting method provided by this application effectively prevents casting cracking during cutting, making casting manufacturing quality controllable and reducing rework costs. After annealing, the elongation is significantly increased by about 500%, and the plasticity is significantly improved, effectively reducing the risk of cracking.