Judgment Criteria And Detection Methods For Wire Drawing Die Replacement

In actual production, the empirical judgment method 

‌1. Trial drawing observation method: 

After the new drawing die is installed, measure the wire diameter during trial drawing.Replace it immediately if it exceeds the tolerance. 

Observe whether the drawing process is smooth. Abnormal vibration or noise may indicate die problems 

‌2. Product defect correlation method: 

When continuous scratches (" roughening ") appear on the surface of the finished product, the surface finish of the die needs to be checked ‌. 

The phenomenon of "shrinking wire" in wire diameter may indicate insufficient lubrication or die wear ‌. 

Ellipticity deviation is often related to drawing die manufacturing errors or improper installation

3.Production parameter monitoring method: 

If the drawing force suddenly increases by more than 15%, the condition of the drawing die should be checked. 

Preventive inspections should be carried out when the continuous production time of the same die exceeds the recommended cycle. 

Frequent start and stop will accelerate die wear. The inspection interval should be shortened ‌. 

4.Maintenance record analysis method: 

Establish a drawing die service life file and calculate the average failure period. 

Record the usage duration and processing volume after each grinding and polishing.

Analyze the causes of early failure and improve the usage and maintenance methods ‌.

Replacement decision process recommended daily check: 

Per simple appearance inspection and dimension measurement periodic testing. ‌ 

Professional instrument testing according to production or time period. ‌ 

By an exception handler appear quality problem when stop the machine immediately to check. ‌ 

Preventive replacement: proactive replacement key working procedure to suggest the service life of the drawing die.

Old‌ die analysis: Conduct failure analysis on the replaced drawing die and optimize the usage parameters. ‌‌