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the inner wall of the crucible occurs holes

已有 318 次阅读  2011-11-17 03:31   标签mulberry  veske 

Thermal analyzer in the cast alloy Al-Si alloys application


Gold. Frequency furnace electromagnetic field focused on the induction loop the middle of the iron crucible in the lower part of the formation of high temperature hot zone; combined with liquid aluminum in the electromagnetic induction effect of eddy currents on the coating continuously washed, easy to make the coating off, resulting in the crucible wall in the lower segment was the depth of liquid aluminum corrosion, molten aluminum by iron serious j. Although the production using a variety of iron crucible, and the daily rotation of the crucible, re-coated zinc oxide coating, but the crucible of molten aluminum infiltration of iron corrosion and the phenomenon is still difficult to avoid, as the production of a chronic problem. To solve this problem, citing new composite ceramic coating for crucibles TGT protection, achieved good results. 1T (paint and coating process smelting. 2T (coating application frequency furnace iron crucible capacity 300kg, daily continuous melting 19h. Smelting aluminum alloy material for the ZL101, YZL380. Coating directly after the crucible for melting. Tu layer of tough high, and the crucible wall attached to a solid, can withstand the added charge aluminum ingots and back to block the direct impact and long-term erosion of aluminum liquid vortex. coating does not adhere to molten aluminum, in addition to gas processing, and easy slag produced cover agent removed from the coating surface. crucibles of life is generally 15d,mulberry outlet, in the inner wall coating TGT put into use,uggs outlet nederland, inspected once every 5d crucible coating and iron status. check with thin aluminum skin attached to the coating, easy to remove with a shovel. TGT protective coating on the coated part is a high performance ceramic composite coatings in the TGT available real damage repair the new crucible coating general comprehensive once again experience resistance crucible furnace melting chamber conditions, the paint-resistant Heat cast-iron double-check on the crucible can be used to partially repair the crucible failure, while the inner wall coated with a coating, the gap can be used more than six months. taking into account the frequency of furnace operating conditions is still intact,uggs nederland, can continue to play a shield of liquid aluminum and the crucible wall protective effect. pieces, select one of the TGT-4 type for the production. coating process are: the crucible Table 1 shows the ZL101 alloy of molten aluminum smelting process into the daily average with hanging furnace preheated 8 ~ 10min, brushing TGT primer (spray can change the amount of Fe. shows that the melting process in the 16d to maintain the amount of iron coated),uggs nederland online, then spray TGT fabric. coating total thickness of 0.5 to 1.5 0.2% 0.4% (wt) fluctuate within the range (this volatility and increase n Ⅱ n. coating surface roughness, coating the crucible after the completion of feeding power into the charge of sending the iron content), the phenomenon does not occur by iron Table 1ZL101 melting in the molten aluminum alloy containing Fe daily average amount of change in melting days / d12345678910111213141516.. zs.. s ·.. z.... s.. s ·。.。. s... Xie.... ss. . ss.. sz.. ss.. z.. s · production was also coated with a TGT crucible for melting the old as long as the old wall of the crucible and the oxide residue to clean up after the coating can be coated as usual TGT used to extend the life of the old crucible addition, the inner wall of the crucible occurs holes (casting porosity, shrinkage, or aluminum corrosion holes,mulberry norge, etc.), can be expected at the end TGT anointed to fill,mulberry oslo, spray 'I'GT fabric may continue to use after * Zhang, male, born in 1946, Professor, Huazhong University of Science and Technology of Materials Science and Engineering, Wuhan Wuchang Guanshankou (430074), Tel :027 -87,543,876 Received Date; 2002-08-08.si alloy after sodium salt modification, the eutectic transformation temperature drop from the platform to analyze the following aspects,mulberry vesker, modifier is not soluble in sodium a solid solution, it is adsorbed on the growth of silicon twin groove,ralph lauren danmark, can inhibit the growth of silicon,uggs nederland, silicon changes growth pattern, the alloy liquid undercooling increases, the performance of the cooling curve as a platform on the temperature drop, this effect can continue to promote the branching of silicon, the silicon from the needle into a fibrous metamorphic agent when the dosage is not enough , the effect of weakening, the change reduced undercooling, the cooling curve shows that the temperature drop less as a platform in this trial to get under 7 ℃ in a 5 eleven this temperature range, with the production and test conditions different, would produce a certain bias,mulberry outlet, based on this principle for the design of the thermal analyzer. si alloy modification effect rapid analysis of blast furnace is possible, using the process of using an open software platform, through the actual production test to determine the best the temperature range to meet different production conditions. References 1 Haoqi Tang, Chen Hongsheng, Xu Qingyan. Al-Si alloy thermal analysis of the development of the status quo. Special Casting & Nonferrous Alloys, 1994 (6) :37-392 housing Li. AI.Si alloy Thermal analysis of the test sample cup and research. foundry technology, 2001 (1): 15 a l7 (Editor: Zhang Zheng He) 47
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