Common Problems and Solutions for Straight Line Wire Drawing Machine Drawing Process
During the wire drawing process of the straight line wire drawing machine, common problems mainly include broken wires, surface defects, uneven sizes, insufficient lubrication, etc. The following is an analysis and solution for these problems.
Wire Breakage
Cause Analysis: Wire internal defects, wire drawing die wear, poor lubrication, or too high drawing speed will cause the wire to be subjected to excessive stress and break during drawing.
Solution:
Choose high-quality wire without defects.
Check and replace worn drawing dies regularly.
Ensure a sufficient supply of wire drawing powder and select suitable wire drawing powder to reduce friction between drawing mold and wire.
Control the wire drawing speed to avoid excessive speed leading to drawing stress concentration.
Surface Scratches on Cold-Drawn Wire
Cause Analysis: Residual oxide scale on the wire surface, rough mold cavity, and insufficient lubrication may cause scratches on the wire during the drawing process.
Solution:
Use a descaling machine to completely remove the oxide scale and impurities on the wire surface.
Polish the drawing mold regularly to keep the mold surface smooth.
Ensure that the drawing powder is evenly covered on the wire surface to prevent scratches caused by dry friction.
Uneven Size of Cold Drawn Wire
Cause Analysis: Uneven wear of the drawing die, unstable tension control, and fluctuation of drawing speed may cause fluctuation of wire diameter.
Solution:
Check the wear of the die regularly and replace the worn die in time to ensure consistent drawing size.
Maintain tension control system to ensure stable drawing tension.
Set and maintain constant drawing speed to reduce uneven size caused by speed fluctuation.
Rough or Black Spots on the Cold-Drawn Wire Surface
Cause Analysis: Incomplete cleaning of the steel wire surface or impurities in the drawing powder will cause the surface to be rough or form black spots.
Solution:
Ensure the steel wire surface is clean and remove oxide scale and impurities.
Use high-purity drawing powder to avoid impurities affecting the surface quality.
Surface Burrs on Cold Drawn Wire
Cause Analysis: Wear on the edge of the wire drawing die outlet or uneven hardness of the wire may cause burrs.
Solution:
Regularly check the smoothness of the die outlet edge, and polish or replace the worn die in time.
Ensure uniform hardness of the wire.
Reasonably control the drawing speed to avoid surface burrs caused by too fast speed.
Excessive Temperature Causes Surface Oxidation of Cold Drawn Wire
Cause Analysis: Excessive drawing speed, insufficient lubrication, or poor heat dissipation of the equipment will increase the wire surface temperature, causing oxidation.
Solution:
Control the drawing speed to avoid excessive temperature due to excessive speed.
Ensure a sufficient supply of drawing powder to reduce frictional heat generation.
Strengthen the air cooling and water cooling system of the wire drawing equipment to ensure good heat dissipation.
Summary
In the wire drawing process of the straight-line wire drawing machine, common problems such as wire breakage, surface defects, and uneven size can be reduced by careful control and regular maintenance of the wire, wire drawing dies, wire drawing powder, and wire drawing machines. This can not only improve the quality of cold-drawn wire but also improve production efficiency.
Comprehensive Wire Drawing Solutions by Uniwin Wire Drawing Equipment Factory
As a professional straight line wire drawing machine manufacturer, we not only provide high-performance wire drawing equipment, but also provide high-quality wire drawing dies and wire drawing powder to comprehensively improve the drawing effect of customers. Our drawing dies have high wear resistance and smooth surfaces, suitable for materials of different hardness and specifications, effectively reducing friction and extending service life. According to the customer’s wire drawing material requirements, we recommend suitable wire drawing powder: for processes with low lubrication requirements, we provide economical wire drawing powder; for processes with high requirements, we use high-oil wire drawing powder to ensure optimal lubrication, extend drawing mold life, reduce wire breakage risks and optimize customer costs.