如果要對(duì)鋅鋼護(hù)欄進(jìn)行噴粉，噴粉的時(shí)候應(yīng)該注意哪些問題，怎樣進(jìn)行噴粉才是最好的，作為專業(yè)的鋅鋼護(hù)欄廠家，小編和大家一起來學(xué)習(xí)一下怎么進(jìn)行鋅鋼護(hù)欄的噴粉問題。

　　噴粉過程中，要注意吊具的導(dǎo)電性，且吊具上的徐層不宜太厚，過厚時(shí)可采取集中焚燒的方法清除用具上的涂層;由于工件較重，一定要設(shè)計(jì)好掛具，要求掛具牢固可靠。

　　采用預(yù)烘的目的:一是除去工件上剩余的水分，二是可以保證一定厚度的粉末涂料較好地附著在工件的表面，三是保證工件盡快均勻受熱，加快固化過程一般預(yù)烘的溫度是80—140℃。

　　對(duì)于護(hù)欄產(chǎn)品，根據(jù)其特點(diǎn)，采用自動(dòng)噴槍另加手工噴槍補(bǔ)噴相結(jié)合的形式，目的是實(shí)時(shí)監(jiān)控噴粉質(zhì)量，保證產(chǎn)品質(zhì)量穩(wěn)定。一般純聚酚粉術(shù)涂料的固化條件是200℃，10min，通過調(diào)整加熱爐的溫度和鏈速來保證固化溫度和時(shí)間。

　　采用冷風(fēng)吹干，在吹干的過程中，對(duì)工件進(jìn)行檢查，對(duì)于允許缺陷，如流掛、起泡、露底、締孔等可用丙酮等稀釋粉末涂料，趁工件未晾時(shí)涂程或噴覆于缺陷表面，用余熱固化對(duì)于重大缺陷需要進(jìn)行返修處理，根據(jù)涂膜厚度選取不同的處理方法，一般有直接上件重新噴粉、機(jī)械打磨、用脫膜劑處理三種方法。

If you want to for zinc steel guardrail powder spraying, powder spraying, what should you pay attention to the problem, how to spray powder is the best, as a professional manufacturer of zinc steel guardrail, small make up together with you to learn how to zinc steel guardrail powder problem.

Powder spraying process, attention should be paid to sling the electrical conductivity, and on the spreader xu shoulds not be too thick, too thick can adopt the method of centralized burning when clear the coating on the appliance; Due to the workpiece is heavier, must design good hanging fixture, hanging fixture is firm and reliable.

Adopt preliminary drying purpose: one is to remove the workpiece on the remaining water, 2 it is to guarantee a certain thickness of powder coating well attached on the surface of workpiece, three is to ensure that the workpiece evenly heat as soon as possible, accelerate the curing process of general preliminary drying temperature is 80-140 ℃.

For guardrail products, according to its characteristics, the use of automatic spray gun plus the combination of manual spray gun for spray form, the purpose is to real-time monitoring of powder quality, guarantee the product quality is stable. General pure polyphenol powder coating curing condition is 200 ℃, 10 min, by adjusting the temperature of the heating furnace and the chain speed to ensure that the curing temperature and time.

Using cold wind blow dry, in the process of dry, examine artifacts, for allowing defects, such as flow, foaming, grinning, hole and usable acetone diluted powder coatings, such as the association TuCheng while artifacts not drying or spray coated the surface defects, use of waste heat curing processing for major defects need to repair, according to the different processing methods of coating thickness selection, generally have a direct on the powder spraying, mechanical grinding, deal with three methods with remover.