1, key head wear: the aluminum wire bonder has been used for a long time, and the key head may become smaller due to wear, resulting in smaller pressure points. Solution: Replace it with a new key head.

2. Insufficient pressure: insufficient pressure of aluminum wire bonder will also lead to smaller pressure point. Solution: Check the pressure setting of aluminum wire welding machine and adjust it to the appropriate pressure range.

3. Incomplete cleaning: During the use of the aluminum wire bonder, it may be affected by dust and other sundries, resulting in the contamination of the key head and pressure points, thus affecting the bonding effect. Solution: clean the aluminum wire bonder, especially the key head and pressure point, and keep it clean.

4. Visual error: Sometimes due to the visual error of manual operation, the pressure point becomes smaller. Solution: Pay more attention during the operation to avoid visual errors.