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TongLIngChangJiang copper industry co.,Ltd.
Tel:0562-2222001 2222011
Fax:0562-2222000
Add:Lake Tongling Economic Devel opment Zone in Anhui Province Two Road No. 1391
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亚洲城欢迎您kened?
   Many people reacted to the black copper wire, in fact, caused the black copper wire and oxidation of many reasons, today Xiaobian specially consulted the Yangtze River copper industry professionals, they said so:
(1) Wire drawing emulsified oil pool area is small, reflux pipeline is short, and sealed, resulting in slow heat dissipation, resulting in high emulsion oil temperature.
(2) it is caused by annealing of copper wire. One is that the cooling water used in the process of drawing and retreating is usually tap water and groundwater. Because the water quality varies from place to place, the PH value of the water quality in some areas is low, only 5.5-5.0 (7.0-7.5 normally), and the antioxidant oil film in the original emulsion is cleaned out, and the annealed copper wire is easy to oxidize and blacken. The other is that the copper wire is drawn by ordinary drawing machine. The copper wire is annealed on another annealing line, and the cooling water has no use of antioxidants. The antioxidant time is short, and the phenomenon of oxidation and blackening will soon appear.
(3) Some old factories still use annealing cylinder to annealing, the following reasons will also cause oxidation and blackening: first, the annealing cylinder nut did not tighten, after washing carbon dioxide or high-purity nitrogen leakage; second, the temperature of the copper wire out of the cylinder is too high, beyond 30 degrees Celsius; third, the wire drawing emulsion maintenance is not enough, PH value is too low; these conditions in summer high temperature; When the emulsifier is used continuously, it will be lost, and when the temperature is high, it will lose more quickly. If new crude oil is not replenished in time, the fat content will be very small, coupled with high temperature, the temperature of the emulsifier may exceed 45 degrees Celsius, which will easily cause oxidation and blackening.
(4) another case is that because of the widespread use of high speed wire drawing at present, the speed is increased, the relative heat dissipation time is reduced, and the oxidation brings some space and time. Therefore, it is suggested that manufacturers pay more attention to the fat content of the emulsion, the proper use of temperature, pH value, and so on. Quicker, you can use fungicides and mold inhibitors, antioxidants can be used in summer, to solve oxidation, blackening problem is not a problem.
   To prevent the copper wire from blackening, it is necessary to preserve the copper wire normally, and to inspect it regularly when it is not in use, and to deal with it immediately when it is found to be blackened.
Tongling Yangtze river copper industry co., LTD. All rights reserved Tel:0562-5885018 Fax: 0562-5885000 Technical support: XHnetworkAdmin
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