In the process of commissioning copper wire drawing machine, it is important to control the outside diameter deviation to ensure product quality. Here are some key controls:
First, check and adjust the equipment status
1. Mold inspection:
Ensure that the drawing die is accurate in size and free from wear or deformation. The wear of the mold will directly affect the outside diameter of the pulled copper wire, so it is necessary to check and replace the worn mold regularly.
2. Tension adjustment:
According to the copper wire material and drawing process, reasonable setting and adjustment of the front and rear tension. Too much or too little tension can lead to outside diameter deviation, so it is necessary to test and observe to find the best tension setting.
3. Lubrication and cooling:
Ensure that components such as the wire holder and drawing die are well lubricated to reduce friction and wear. At the same time, check whether the cooling system is in normal operation to ensure that the copper wire is fully cooled during the drawing process to avoid the outside diameter change caused by thermal expansion and cold contraction.
Second, optimize the drawing process parameters
1. Speed matching:
Adjust the speed setting of the wire drawing machine to ensure that the drawing speed matches the annealing speed. Speed mismatch can cause the copper wire to be subjected to uneven tension during annealing, which affects the outside diameter size.
2. Annealing control:
Pay close attention to the copper wire status on the annealing wheel to avoid the copper wire jitter or flutter during the annealing process. Jitter will cause the annealing current density to be unstable, which will affect the outer diameter of the copper wire.
3. Mold adjustment:
According to the actual situation of the wire drawing machine and the principle of wire drawing, the wire drawing machine is re-matched. By adjusting the speed of the annealing wheel, the speed of the constant speed wheel and the front slip coefficient, the outside diameter of the pulled copper wire can meet the specifications.
Third, strengthen daily maintenance and inspection
1. Check regularly:
Regular inspection and maintenance of all parts of the wire drawing machine, including line storage, annealing wheel, mold, etc. Discover and deal with potential problems in time to avoid adverse effects on drawing quality.
2. Cleaning and maintenance:
Keep the wire drawing machine clean and dry, avoid dust and oil and other impurities to damage the equipment, regular maintenance and lubrication of the equipment, extend the service life of the equipment.
3. Record and analysis:
Record the parameter Settings and results during each debugging for subsequent analysis and improvement. By comparing the drawing effect under different parameters, the best debugging scheme is found.
To sum up, the control of the outside diameter deviation of the copper wire drawing machine in the debugging process needs to start from many aspects such as equipment status, process parameters and daily maintenance. Through fine debugging and strict control, it can ensure that the outside diameter of the pulled copper wire meets the specifications, improve product quality and production efficiency.