Welding of zinc pot can be used when the E-422 electrode (to ensure the chemical composition). Zinc pot four angle should be circular arc, increase the zinc liquid liquidity to avoid local overheating four angles. According to practical experience, zinc pot such a production cycle service life up to 56 months by using electric heating, fuel (gas) heating can reach 45 months, coal-fired heating up to 34 months.
Zinc pot outside of bonded 20mm thickfirebrick of steel wire hot galvanizing zinc liquid in the required temperature of the best (46010) in the range of E. Temperature fluctuation is too big, liquid zinc dross in precipitation in the temperature is reduced, not only a large quantity of slag, and the deterioration of the quality of galvanized steel wire, zinc pot erosion intensified. In order to ensure the liquid zinc temperature changes in steel wire galvanizing temperature relatively small, in the design of zinc pot, the molten zinc quantity is 2025 times the amount of hourly production of galvanized steel wire, that is to say 40t molten zinc pot per hour of galvanized steel wire production cannot exceed 2T. heating mode is a key factor affecting the liquid zinc temperature change the general said, call heating fuel (gas) is better than that of heating, coal-fired heating and the worst, but from the economic point of view is just the opposite. Many manufacturers through years of practice that, if the heat source to heat its loss supplement zinc pot consumption and away in the plating steel wire heat during the process and the zinc pot, the heat in a state of balance, can achieve the ideal effect. And the characteristics of coal are heated by fire temperature rises fast, the fire temperature drop quickly hours. Zinc pot heating zone with all the lateral wall of furnace brick with polyester slice or refractory cement will firmly bonded 20mm thick brick, make flame not directly burning zinc pot wall. In order to improve the thermal efficiency of the refractory brick is coated with a layer of black fireproof coating or polyester slicing the pot wall emissivity for more than 0.9, more easily to heat and heat transfer.
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