Comparison of traditional technology and new technology to repair copper mould tubeThe crystallization copper pipe is the core part of the continuous aster.Duri
Comparison of traditional technology and new technology to repair copper mould tube
The crystallization copper pipe is the core part of the continuous aster.During the process of steel making, the steel pipe part will wear out due to the scouring of steel water, and for a long time, you need to replace or repair the crystallization device copper.
The traditional repair process is: coating removal- -finishing-pulling, machining- -plating-processing- -inspection and packing.Usually after 6-8 repeated processing and repair, the copper pipe is also scrapped.
The repair process using new technology is: copper pipe return chromium-processing (pull out) -external surface copper plating (using copper pipe copper plating special additive) -processing-plating nickel-cobalt alloy (composite plating additive) -chrome plating processing-polishing.Copper plating with additives, high size precision, low internal stress, good binding force, good toughness and fast heat dissipation speed.Electroplating speed is fast.
Saving resources and repeated use of existing resources, is the steel to reduce production costs, improve efficiency of the direction.Although some steel mills now repair the copper pipes through traditional technology, the repairs only account for a few thousandth of the copper pipes.Repair the copper pipe with new technology and will be used forever.Take the whole country as an example: an annual output of 500 million tons of steel requires 200,000 crystallization device copper tubes, which can save 800 million yuan a year.
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Harm of too high temperature: when molten steel out of cooper mold, the billet shell is thin and easy to break out; The accelerated erosion of refractory can ea
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1. The barrier function (mainly completed by the liquid slag layer) isolates the contact between air and molten steel, blocks the secondary oxidation of molten
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In continuous casting, low corrosion resistance often occurs, which directly leads to uneven composition and will eventually affect the smelting quality. In or