The service life of the mold is related to many factors such as mold structure design, mold steel selection, heat treatment, surface treatment, machining and grinding, wire cutting technology, stamping equipment, stamping materials and technology, mold lubrication, poor maintenance and repair. Among the various factors that cause mold failure, improper mold structure and improper material selection accounted for about 25%, improper heat treatment accounted for about 45%, process problems accounted for about 10%, and factors such as equipment problems and slippage problems accounted for about 20%.Pay attention to maintenance after installation of stamping parts to prevent rust and corrosion. In daily use, lightly close and lightly open to prevent hard closing and hard opening, causing damage.