Regulations, Standards, and Reasons for Scrapping Aluminum Extrusion Dies

Standards for Scrapping Aluminum Extrusion Dies
Based on the company's charter, under a service-oriented management model, this standard is formulated to regulate the management of aluminum factory dies, improve die utilization efficiency, and ensure production.

There are many reasons for scrapping aluminum dies: Firstly, the working conditions of aluminum extrusion dies are extremely harsh. They endure intense friction and wear under high temperature and high pressure. According to on-site production statistics, the main failure forms of dies are three types: (1) friction and wear failures account for 65%, (2) fatigue crack failures account for 18%, and (3) plastic deformation and collapse failures account for 15%. The criteria for determining a failed die is that the extruded product cannot meet product standards and cannot be repaired. The service life of a die is generally described by the effective extrusion volume.

一. Scrapping Process: When a mold is found to be damaged or worn out after use and cannot be repaired, the Mold Maintenance Department of the Manufacturing Section shall fill out a mold scrapping application form. After being reviewed by the company's Deputy General Manager and approved by the General Manager, the scrapping is implemented. The Technical Department will then apply for the production of a new replacement mold.

二. Scrapping Standards: The standards for scrapping molds refer to relevant national regulations and the company's asset management procedures, specified as follows:

Technical and Quality Standards for Scrapping

(1) The product has stopped accepting orders, and the items produced from the mold are no longer usable.

(2) The mold has reached the end of its service life and is severely damaged, making it unusable.

(3) Due to design changes, the original product has been altered, and the mold cannot be modified or repurposed.

(4) The mold has cracks, and the surface roughness required for the product cannot meet the production process requirements.

(5) The mold has a high defect rate, and attempts to resolve it through more than three "Countermeasure Meetings" have failed.

(6) The mold frequently suffers burn and weld damages, making it impossible to complete a full production shift.

(7) Major insert parts of the mold are cracked, and remanufacturing the inserts is uneconomical.

(8) Due to design or manufacturing issues, the mold frequently sticks, exceeds dimensional tolerances, and operates with low efficiency.

(9) Other factors have rendered the mold worthless.