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EPC water-based coating


A2BlC2D30.88294305I9A2B2Cl0.73488.8364.5II8A2B3ClI) 20.80987.6l13.25II9A3BlC30.59997324I9A3B2C1D30.68588.8390III9A3B2Dl0.63484.6398.5I8 (1) coated with different structures linked to the disappearance of membrane surface by brush, dip,[link widoczny dla zalogowanych], spray, pour and other coating methods, can form a layer on its surface a uniform coating, indicating good thermal performance coatings developed. (2) thixotropic casting lost foam coatings based on (look) of different sizes, generally between 0.5 ~ 2mill. In order to EPC surface layer of uniform thickness and has a coating layer, will require coating should have good thixotropy, it also has a certain resistance to flow of brushing and. Figure 1 shows the apparent viscosity of paint at a constant shear rate, shear time with drastically reduced. The thixotropic calculation, is the apparent viscosity of 10min of reading (S) and 30s reading (S) with the following formula were calculated thixotropy thixotropy curves in Figure 1 school × 100 = × 100:54 / j table 3 EPC performance water-based coating the best formula breathable coating strength suspension density / high temperature and rapid heating / cmVPa. Thixotropy value of pn (%) / gg'cm 'crack is much larger than the value of mln98.50.954358.51.654l9 thixotropic paint is greater than 20 indicators. (3) Other performance properties of coating the best formula see Table 3.4 in the laboratory casting production validation verification, the use of A1-5% Cu alloy, pouring temperature 750 ~ C, casting test bars, using dip coating method, coating thickness 0.5 ~ 1.5mm. 2 times paint coating feed system to prevent the collapse box. Smooth surface seen after pouring castings,[link widoczny dla zalogowanych], paint into the layer off. Production verification wet paint roller with a ball mill, mixed process: quartz powder + bentonite (dry mix 4h) ten dextrin + water + silica + CMC and additives (wet mix 4h) a material. Cast aluminum body parts and HT fan housing, casting the surface is smooth, clear edges and corners, no adhesive layer, high dimensional accuracy, flaky coating off. 5 Conclusion (1) The coating can be used for lost foam casting non-ferrous alloys and cast iron and small steel castings. (2) the coating performance, low cost,[link widoczny dla zalogowanych], has some use and economical. References: 【1] Chen Jiayou, Yang Shan. Molding materials testing technology 【M]. Beijing: Mechanical Industry Press, l987. [21 Guguo Tao. Test Method of coating thixotropic casting 【J] _ casting, 1982, (3): l9.24. Tin (Zebian / Select School: Zhang society) (Continued from page 4 changes in heat affected zone, resulting in grain boundary chromium depletion zone,[link widoczny dla zalogowanych], accelerated corrosion of austenitic stainless steel. 4 Conclusion (1) austenitic stainless steel welding line with the increase in energy, easy-to-coarse austenite grains, while the heat affected zone sensitization wider temperature range, resulting in the corrosion resistance of welded joints decreased. (2) The energy increases as the welding wire, stainless steel corrosion rate increased and the corrosion rate increased trend. References: 【1】 Yu Jiakang. Chemical micro-optical technology into the phase and resonance Raman spectroscopy evaluation of sensitization to intergranular corrosion susceptibility of stainless steel 【J]. Corrosion Science and Protection Technology, 1997,[link widoczny dla zalogowanych],9 (2): 153.155. 【2] Pan Ying. Sensitized austenitic stainless steel intergranular corrosion 【J]. Qingdao Institute of Chemical Technology, l998, l9 (4) :369-373. 【3] History of strong. Make use of standard assessment of intergranular corrosion of stainless steel work [J]. Corrosion and Protection, 2000,2 l (4): l82 a l85. 【4] Xu Chongchen. High purity nitrogen austenitic stainless steel resistant to intergranular corrosion of [J]. Corrosion Science and Protection Technology, l997, 9 (3): l92.195. 【5] Wang Rongbin. 18-8 austenitic stainless steel intergranular corrosion because of 【J]. Material Protection, l999, 32 (12): 3l a 32. The region's steel welded body microstructure and scanning electron microscopy [J]. Shandong University of Technology, l999, 29 (2): l84-l85. 【7] GoochTG. Corrosionbehaviorofweldedstainlesssteel 【J]. WeldingJournal, 1996,75 (5) :135-153. Tin (Zebian / Select School: Lou Hongen) He Yi Guo dancing mouse group ∞ ∞ ∞ ∞ as

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