CAL KING: What is the main purpose of hot-dip galvanized sheet? Solution: Hot-dip galvanized sheets are mainly utilised in building, home appliances, instruments, systems, electronics, light industry, along with industries QUEEN: What forms of galvanizing methods are available on this planet? Resolution: There are three varieties of methods: electro-galvanizing, hot-dip galvanizing, and galvanizing. Q: Which two types of hot-dip galvanizing is usually divided into different annealing physical trainings? Answer: It can oftentimes be divided into two styles: in-line annealing as well as out-of-line annealing, that can be called shielding energy methods and flux approaches respectively. QUEEN; What would be the popular steel marks for hot-dip galvanized blankets? Answer: Product lists: Normal commodity rolls (CQ), structural gal linens (HSLA), deep illustrating hot-dip galvanized sheets (DDQ), bake hardening hot-dip gal bed (BH), dual-phase metal (DP), VISIT steel (transformation activated plasticity steel), etc. Q: What are the kinds of galvanizing annealing furnaces? Response: There are three kinds of vertical annealing furnace, horizontal annealing furnace, and down and up and horizontal annealing air conditioner. Q: How many cooling methods are actually used for cooling towers? Answer: There are not merely one but two types: air-cooled in addition to water-cooled. QUEEN: What are the main defects of hot-dip galvanizing? Resolution: Mainly include: shedding, scrapes, passivation spots, zinc debris, thick edges, air chef's knife streaks, air knife scratches, exposed steel, inclusions, kinetic injury, the poor performance using the steel base, wave is not stable, buckling, size Incompatibility, embossing, infrequent zinc layer thickness, rotate printing, etc. Q: Are you ready for main reasons for your own zinc layer to tumble off? Answer: The main advantages in the zinc layer so that you can fall off are: area oxidation, silicon compounds, at the same time dirty cold-rolled emulsion, exorbitant oxidizing atmosphere plus protective gas dew point while in the NOF section, unreasonable air-fuel charge, low hydrogen flow, oxygen infiltration inside furnace, The temperature while in the strip steel entering your pot is low, the furnace pressure through the RWP section is low and furnace door suction, the particular furnace temperature inside NOF segment is decreased, the grease does no longer evaporate, the aluminum content with the zinc pot is lessened, the unit speed is going to be too fast, the diminishment is insufficient, and the zinc water The medium residence situation is too short in addition to coating is too wide. Q: What are the causes of white rust plus dark spots? Answer: Dark spots are formed merely by further oxidation of light rust. The main advantages of white rust are: Vulnerable passivation, insufficient or uneven thickness of the passivation film; no oil inside surface or residual moisture for that surface of the eliminate; moisture on the surface of the strip during coiling; imperfect passivation; moisture or rainwater during moving or storage; The finished product storage time could be to much time; the galvanized sheet is in contact with other corrosive marketing like acid and alkali or perhaps stored together. Q: Is there a meaning of hot-dip gal sheet finishing? Answer: With the continuous expansion of the usage of hot-dip galvanized sheet, within the modern continuous hot-dip galvanizing type of strip steel, this purposes is usually accomplished by smoothing the particular strip: ①Improve the straightness and flatness for the thin plate, and while completing this task, the zinc particles to the surface can be flattened to produce the surface of the strip smooth, which is particularly beneficial for future deep drawing and also other occasions with high precision; ②The smoothing roller used has undergone pre-shot peening cure, so the surface from the smoothed plated plate carries a certain degree of roughness. It can improve the adhesion from coating and can store various grease, which is beneficial towards lubrication of the stop functioning during heavy drawing digesting; ③For the plated plates to become painted later, although the surface is controlled that they are small spangles, the small spangles are able to exposed through the coloring layer. Therefore, for a lot of high-demand galvanized sheets, the surface with the small spangles is forced to be smoothed. In using these services, the galvanized sheet can obtain a more uniform silver-white visual appeal; ④Through smoothing, the lower yield point could be lowered, and the yield platform disappears or could be less obvious, which can prevent slip lines from appearing included in the subsequent drawing or severely drawing processing, and boost the possibility of deep demonstrating. https://www.hannstarsteel.com/GALVANIZED-STEEL-COIL-GI-pl3234515.html