The key factors affect the quality of wire drawing process
In the drawing process, it is easy to face that the dies are not used for a long time, but the holes are larger or elliptical, wire break frequently, and the wire surface is not polished, which brings difficulties to the operation and causes losses to the production. There are many reasons for these problems, mainly including the following factors:
1. Input wires
The surface quality of the input wires not good, such as it is elliptical, overlapped, spotted, uneven, etc., which make it difficult for drawing. In addition, the inherent quality of the wire itself, such as mechanical properties, chemical composition, metallographic structure, etc., are all relevant to the quality of the product after drawing.
2. Drawing equipment
The drawing equipment installation is not stable and with big vibration, the drawing capstans are grooved or the wire drawing speed is too fast, etc. These will affect the drawing quality.
3. Wire drawing dies
The angle of the dies hole is inconsistent or does not meet the standard. In addition, the unreasonable die series, mainly refers to the excessive or small amount of compression in each pass.
4. Lubricant
When drawing, lubricating oil is added to form a thin film on the metal surface within the working cone. Angle due to pressure.
Lubrication is added during drawing to make the metal surface form a thin film due to pressure in the working cone angle, so that there is no direct friction between the wires and the die holes, which reduce friction and thus it can reduce the power load of the equipment and prolong the service life of the drawing dies. And, it is also need to reduce the drawing temperature. There must be sufficient pressure to make the cooling of dies and wires good. The high temperature of the wires will damage the lubricant and die holes during drawing.
5. Die cores
For drawing different material wires, it should choose the proper die cores to improve the service life of the dies.
1. Input wires
The surface quality of the input wires not good, such as it is elliptical, overlapped, spotted, uneven, etc., which make it difficult for drawing. In addition, the inherent quality of the wire itself, such as mechanical properties, chemical composition, metallographic structure, etc., are all relevant to the quality of the product after drawing.
2. Drawing equipment
The drawing equipment installation is not stable and with big vibration, the drawing capstans are grooved or the wire drawing speed is too fast, etc. These will affect the drawing quality.
3. Wire drawing dies
The angle of the dies hole is inconsistent or does not meet the standard. In addition, the unreasonable die series, mainly refers to the excessive or small amount of compression in each pass.
4. Lubricant
When drawing, lubricating oil is added to form a thin film on the metal surface within the working cone. Angle due to pressure.
Lubrication is added during drawing to make the metal surface form a thin film due to pressure in the working cone angle, so that there is no direct friction between the wires and the die holes, which reduce friction and thus it can reduce the power load of the equipment and prolong the service life of the drawing dies. And, it is also need to reduce the drawing temperature. There must be sufficient pressure to make the cooling of dies and wires good. The high temperature of the wires will damage the lubricant and die holes during drawing.
5. Die cores
For drawing different material wires, it should choose the proper die cores to improve the service life of the dies.
Factors Affect Dies Service Life