2種防腐技術(shù)+15年防護(hù)期！濟(jì)南輕鋼防腐，熱鍍鋅vs涂裝，一看就會(huì)

　　2 anti-corrosion technologies+15 year protection period! Jinan light steel anti-corrosion, hot-dip galvanizing vs coating, it's easy to see at a glance

　　蓋濟(jì)南輕型鋼結(jié)構(gòu)房的朋友，大多只關(guān)注強(qiáng)度、造價(jià)和工期，卻容易忽略一個(gè)關(guān)鍵問題——防腐！濟(jì)南屬于溫帶季風(fēng)氣候，夏季多雨潮濕、冬季多雪嚴(yán)寒，空氣中的水汽、鹽分容易侵蝕輕鋼構(gòu)件，要是防腐沒做好，用個(gè)三五年就生銹、脫皮，不僅影響房屋美觀，還會(huì)削弱結(jié)構(gòu)強(qiáng)度，縮短使用壽命，后期維修起來又費(fèi)錢又費(fèi)力。今天就給大家嘮透濟(jì)南輕型鋼結(jié)構(gòu)的兩種核心防腐技術(shù)，用大白話+實(shí)打?qū)嵉臄?shù)據(jù)，把施工細(xì)節(jié)、優(yōu)劣差別講清楚，不管是蓋房施工，還是后期維護(hù)，看完都能少踩坑，關(guān)注我，干結(jié)構(gòu)相關(guān)的事兒，啥都能給你講明白。

　　Friends who build lightweight steel structure houses in Jinan often only focus on strength, cost, and construction period, but tend to overlook a key issue - corrosion prevention! Jinan belongs to a temperate monsoon climate, with rainy and humid summers and snowy and cold winters. Moisture and salt in the air can easily corrode light steel components. If anti-corrosion is not done well, they will rust and peel after three to five years of use, which not only affects the appearance of the house, but also weakens the structural strength, shortens the service life, and makes later maintenance expensive and laborious. Today, we will talk about the two core anti-corrosion technologies for light steel structures in Jinan. Using plain language and practical data, we will explain the construction details and differences in quality. Whether it is building construction or later maintenance, after reading it, you can avoid pitfalls. Follow me and do structural related things. I can explain everything to you clearly.

　　第一種，也是濟(jì)南輕鋼防腐最常用、最靠譜的——熱鍍鋅防腐法，主打一個(gè)“耐用、省心、防護(hù)性強(qiáng)”，適合室外、潮濕等各種復(fù)雜場景。它的核心原理很簡單，就是把加工好的輕鋼構(gòu)件，整體浸入高溫金屬鋅液中，讓鋼材表面自然形成一層純鍍鋅層，次表面形成致密的鋅合金鍍層，這兩層鍍層就像給輕鋼構(gòu)件穿了一件“防護(hù)鎧甲”，能牢牢隔絕空氣、水汽，從根源上阻止鋼材腐蝕。

　　The first and most commonly used and reliable anti-corrosion method for light steel in Jinan is hot-dip galvanizing, which emphasizes durability, peace of mind, and strong protection, suitable for various complex scenarios such as outdoor and humid environments. Its core principle is very simple, which is to immerse the processed light steel components as a whole in high-temperature metal zinc solution, allowing a layer of pure zinc plating to naturally form on the surface of the steel, and a dense zinc alloy coating to form on the secondary surface. These two layers of coating are like putting a "protective armor" on the light steel components, which can firmly isolate air and water vapor, and prevent steel corrosion from the root.

　　給大家上一組實(shí)測數(shù)據(jù)，更直觀感受它的實(shí)力：濟(jì)南輕鋼常用的熱鍍鋅涂層，厚度控制在80-120μm，致密且均勻，比普通鍍鋅層防護(hù)性提升60%；在濟(jì)南多雨潮濕環(huán)境下，正常使用無需額外維護(hù)，防護(hù)期可達(dá)15-20年，比普通防腐方法壽命長3倍以上。而且熱鍍鋅涂層附著力極強(qiáng)，附著力等級(jí)達(dá)1級(jí)，不易剝落、不易開裂，哪怕輕微磕碰，也不會(huì)輕易露出鋼材本體，抗腐蝕能力拉滿。

　　Here is a set of measured data for a more intuitive experience of its strength: the hot-dip galvanized coating commonly used in Jinan light steel has a thickness controlled between 80-120 μ m, is dense and uniform, and has a 60% improvement in protection compared to ordinary galvanized layers; In the rainy and humid environment of Jinan, normal use does not require additional maintenance, and the protection period can reach 15-20 years, which is more than three times longer than the service life of ordinary anti-corrosion methods. Moreover, the hot-dip galvanized coating has extremely strong adhesion, with an adhesion level of 1. It is not easy to peel off or crack, and even slight bumps will not easily expose the steel body. Its corrosion resistance is fully developed.

　　不過熱鍍鋅施工有嚴(yán)格要求，這幾點(diǎn)一定要記牢，不然會(huì)影響防腐效果。施工時(shí)，必須保證所用的熱鍍鋅構(gòu)件外表光滑、無剝落、無漏鍍、無滴瘤、無殘留，每一根輕鋼龍骨、每一個(gè)連接件，都要確保鍍鋅層全覆蓋，無任何死角——實(shí)測顯示，漏鍍面積超過0.5%，就會(huì)讓構(gòu)件防腐壽命縮短50%以上。另外，熱鍍鋅構(gòu)件出爐后，要自然冷卻至常溫，不能用水直接沖洗，避免鍍層開裂，這也是很多施工隊(duì)容易忽略的細(xì)節(jié)。

　　However, hot-dip galvanizing construction has strict requirements, and these points must be kept in mind, otherwise it will affect the anti-corrosion effect. During construction, it is necessary to ensure that the hot-dip galvanized components used have a smooth surface, no peeling, no missing plating, no dripping, and no residue. Every light steel keel and every connecting piece must ensure that the galvanized layer is fully covered and there are no dead corners - actual measurements show that if the missing plating area exceeds 0.5%, the anti-corrosion life of the components will be shortened by more than 50%. In addition, after hot-dip galvanized components are taken out of the furnace, they should be naturally cooled to room temperature and should not be washed directly with water to avoid cracking of the coating, which is also a detail that many construction teams tend to overlook.

　　第二種，涂裝防腐法，主打一個(gè)“低成本、施工便捷”，更適合室內(nèi)輕鋼構(gòu)件，室外使用性價(jià)比不高。它的施工流程很簡單，不用高溫處理，先將純鋅粉溶解，調(diào)配成專用鍍鋅底漆，然后均勻涂刷在輕鋼構(gòu)件表面，通過底漆成膜固化，在構(gòu)件表面形成一層防護(hù)膜，從而阻擋腐蝕介質(zhì)侵蝕鋼結(jié)構(gòu)材料，原理和咱們給家具刷油漆防銹差不多。

　　The second method is anti-corrosion coating, which focuses on "low cost and convenient construction" and is more suitable for indoor light steel components. The cost-effectiveness for outdoor use is not high. Its construction process is very simple. It does not require high temperature treatment. First, pure zinc powder is dissolved and mixed into a special galvanized primer. Then, it is evenly coated on the surface of light steel components. Through the curing of the primer film, a protective film is formed on the surface of the components to prevent corrosive media from corroding the steel structural materials. The principle is similar to painting furniture for rust prevention.

　　這種方法的優(yōu)勢很明顯，施工成本比重鍍鋅低40%左右，每平方米施工成本僅20-30元，而且施工靈活，不用大型設(shè)備，室內(nèi)狹小空間也能輕松施工。但它的短板也很突出，防護(hù)性和耐久性遠(yuǎn)不如熱鍍鋅，尤其是在濟(jì)南室外環(huán)境中，風(fēng)吹日曬、雨淋雪泡，涂裝層容易老化、脫落，防護(hù)期僅3-5年，后期需要頻繁補(bǔ)漆，反而增加維護(hù)成本。

　　The advantages of this method are obvious. The construction cost is about 40% lower than galvanizing, with a construction cost of only 20-30 yuan per square meter. Moreover, the construction is flexible, without the need for large equipment, and can be easily carried out in small indoor spaces. But its shortcomings are also prominent, its protection and durability are far inferior to hot-dip galvanizing, especially in outdoor environments in Jinan, where the coating layer is prone to aging and peeling due to wind, sun, rain, snow, and bubbles. The protection period is only 3-5 years, and frequent repainting is needed in the later stage, which actually increases maintenance costs.

　　涂裝防腐的施工細(xì)節(jié)也不能馬虎，不然等于白做。在實(shí)際工程中，底漆必須涂刷4-5遍，每一遍的厚度控制在15-20μm，總厚度不低于80μm，而且要等上一遍油漆干至80%以上，或者完全干透后，再涂刷下一遍，不能急于求成。如果涂刷間隔太短，油漆無法充分固化，會(huì)出現(xiàn)起皺、脫落的情況，實(shí)測顯示，未干透就涂刷下一遍，會(huì)讓防護(hù)效果降低70%，使用壽命縮短一半。

　　The construction details of anti-corrosion coating should not be careless, otherwise it is equivalent to doing nothing. In practical engineering, the primer must be applied 4-5 times, with a thickness of 15-20 μ m for each coat and a total thickness of not less than 80 μ m. The next coat should be applied after the previous coat of paint has dried to over 80% or completely dried, and should not be rushed. If the brushing interval is too short, the paint cannot fully cure and may wrinkle or peel off. Tests have shown that brushing the next coat before it dries completely can reduce the protective effect by 70% and shorten the service life by half.

　　結(jié)合濟(jì)南輕型鋼結(jié)構(gòu)的實(shí)際應(yīng)用場景，給大家一個(gè)實(shí)用建議：室外輕鋼構(gòu)件（比如屋頂龍骨、外墻框架、室外平臺(tái)連接件），優(yōu)先選熱鍍鋅防腐，雖然初期施工成本稍高，但15年不用額外維護(hù)，長遠(yuǎn)來看更省錢、更省心；室內(nèi)輕鋼構(gòu)件（比如室內(nèi)隔墻龍骨、吊頂龍骨），可以選涂裝防腐法，成本低、施工快，而且室內(nèi)環(huán)境干燥，能延長防護(hù)壽命，性價(jià)比更高。

　　Based on the actual application scenarios of light steel structures in Jinan, a practical suggestion is given to everyone: for outdoor light steel components (such as roof keels, exterior wall frames, and outdoor platform connectors), hot-dip galvanizing anti-corrosion should be prioritized. Although the initial construction cost is slightly higher, there is no need for additional maintenance for 15 years, which is more cost-effective and worry free in the long run; Indoor light steel components (such as indoor partition wall keels and ceiling keels) can be coated with anti-corrosion methods, which have low cost, fast construction, and a dry indoor environment, which can extend the protection life and have a higher cost-effectiveness.

　　給大家看一個(gè)濟(jì)南本地的真實(shí)案例：長清區(qū)某農(nóng)戶蓋的200㎡輕鋼住宅，室外構(gòu)件采用熱鍍鋅防腐（厚度100μm），室內(nèi)構(gòu)件采用涂裝防腐（4遍底漆，總厚度80μm），投入使用5年來，室外構(gòu)件無任何生銹、剝落現(xiàn)象，室內(nèi)構(gòu)件也僅局部出現(xiàn)輕微褪色，無腐蝕痕跡；而旁邊另一戶農(nóng)戶，為了節(jié)省成本，室外構(gòu)件也用了涂裝防腐，僅3年就出現(xiàn)大面積生銹、脫皮，不得不重新補(bǔ)漆，額外花費(fèi)了1.2萬元。

　　Let me show you a real case from a local area in Jinan: a 200 square meter light steel residential building built by a farmer in Changqing District. The outdoor components are hot-dip galvanized for corrosion protection (thickness of 100 μ m), and the indoor components are coated for corrosion protection (4 coats of primer, total thickness of 80 μ m). After 5 years of use, the outdoor components have not rusted or peeled off, and the indoor components have only slightly faded locally without any corrosion marks; And another farmer next to it, in order to save costs, also applied anti-corrosion coating to the outdoor components. In just 3 years, a large area of rust and peeling appeared, and had to repaint, spending an additional 12000 yuan.

　　總結(jié)來說，濟(jì)南輕型鋼結(jié)構(gòu)的防腐，選對方法比什么都重要——熱鍍鋅（80-120μm，15-20年防護(hù)期）適合室外，耐用省心；涂裝防腐（4-5遍，3-5年防護(hù)期）適合室內(nèi)，低成本便捷。不管選哪種方法，都要嚴(yán)格按照施工要求操作，才能確保防腐效果，延長輕鋼房屋的使用壽命。蓋濟(jì)南輕鋼房，別只盯強(qiáng)度和造價(jià)，做好防腐，才能讓房子住得更久、更安心，關(guān)注我，干結(jié)構(gòu)啥都能干，幫你避開所有施工坑。

　　In summary, the right method is more important than anything else for the anti-corrosion of lightweight steel structures in Jinan - hot-dip galvanizing (80-120 μ m, 15-20 years protection period) is suitable for outdoor use, durable and worry free; Coating anti-corrosion (4-5 times, 3-5 years protection period) is suitable for indoor use and is low-cost and convenient. No matter which method is chosen, it is necessary to strictly follow the construction requirements to ensure the anti-corrosion effect and extend the service life of light steel houses. When building a light steel house in Jinan, don't just focus on strength and cost. Do a good job of anti-corrosion to make the house live longer and more comfortably. Follow me, I can do anything with the structure and help you avoid all construction pits.