1,Wire discolouration
Wire (such as copper) surface discolouration is mainly oxidative discolouration, arising from improper temperature and humidity conditions. There may be emulsion concentration is too low or the temperature is not normal; wire attached too much oil; water quality is not qualified; foreign oil mixing and so on.
Find the reason for its discolouration, you can take appropriate measures to solve the problem according to the actual situation. For example, the emulsion concentration is too low to raise it to the normal standard; temperature should be adjusted to the normal temperature of 35 ℃ ~ 45 ℃; check the exit whether the wire drawing oil overflow; remove the emulsion mixed in foreign oils.
2, mould wear and tear big
Causes of mould wear and tear, one is the improper operation of the machine, the other is the wrong choice of lubricant. If the machine is not running properly, the operator needs to practice constantly and check its working condition before each run.
In addition, the lubricant plays a key role in assisting and driving the drawing process, and its selection is critical. Today, wire drawing products from CONDAT are highly regarded by many companies. On the one hand, it has a complete range of products, basically covering all wire drawing applications; on the other hand, VICAFIL? representative lubricant, with fast drawing speed, good chemical compatibility, not easy to break the wire and other advantages, can extend the service life of the mould. Not only that, CONDAT can also be customised for lubrication solutions, walking in the front of the wire drawing industry.
3,Scratches and burrs on broken wire
Wire breakage scratches and burrs greatly affect the aesthetics and quality of the product. The reason for these problems may be due to insufficient lubrication and lead to direct contact between the metal and the mould and the contamination of metal chips, mould hole clogging or lubricant aging, can be filtered through the equipment to remove the metal chips, remove the clogging and the replacement of lubricants to solve the problem respectively.
4,Emulsion stratification/surface precipitates too much
Microbial infestation, PH is too low, liquid water hardness and inorganic salts are too high, the emulsion temperature is too high, may cause emulsion stratification or excessive precipitates on the surface of the wire, the solution should also be targeted.
If it is microbial attack, you can add fungicide and supplement sodium hydroxide solution or triethylammonium alcohol; PH is too low also need to supplement sodium hydroxide solution or triethylammonium alcohol; when the hardness and inorganic salts of the water used in the dispensing of the liquid is too high, you need to replace the water used in the dispensing of the liquid; and the temperature of the emulsion is too high, it needs to be cooled down moderately before using it.
