1. Abnormal control of annealing current
Youdaoplaceholder0 The current does not match the wire diameter ? : The annealing current should be proportional to the square of the wire diameter. If it is set too high or not adjusted according to the wire diameter, it will cause the copper wire to overheat.
Youdaoplaceholder0 Current density fluctuation ? : Poor contact or shaking of the annealing wheel with the copper wire causes unstable current density and abnormal high temperature in a local area.
Youdaoplaceholder0 Drive out of sync ? : Wear of the main motor gearbox causes a mismatch between the annealing rate and the wire drawing rate, indirectly causing abnormal current.
Ii. Failure of the cooling system
Youdaoplaceholder0 Excessively high cooling water temperature ? : Sealed chamber cooling water temperature above 40 ° C cannot effectively lower the residual temperature of the copper wire after annealing.
Youdaoplaceholder0 Insufficient cooling water pressure ? : Insufficient water pressure or volume directly affects the cooling efficiency, causing heat accumulation.
Youdaoplaceholder0 Insufficient lubricant performance ? : The saponification content of the emulsion is too low or its lubricity is poor, and frictional heat generation intensifies the temperature rise.
Iii. Mechanical and Tension Factors
Youdaoplaceholder0 Unstable wire storage tension ? : The air pressure fluctuation of the air pump causes uneven tension of the wire storage wheel, increased friction between the copper wire and the annealing wheel, and local overheating.
Youdaoplaceholder0 Increased friction of the annealing wheel ? : The copper wire vibrates or slips too much on the annealing wheel, and the friction and electric shock cause heat to accumulate.
Youdaoplaceholder0 Improper winding tension ? : Excessive tension may cause abnormal elongation of copper wire, indirectly increasing annealing energy consumption.
Iv. Process and Environmental Factors
Youdaoplaceholder0 Insufficient steam protection ? : Insufficient steam or low water level in the annealing section exposes the copper wire to oxygen, causing the oxidation reaction to release additional heat.
Youdaoplaceholder0 Die matching problem ? : The diameter of the sizing die does not compensate for the reduction in linear diameter. The tension and elongation need to be balanced by adjusting the die size.