Factory Fence Letter Rust Removal and Refurbishment Record
Renovation of the large characters on the factory perimeter wall begins at the east corner. Last month, I inspected and found the steel letters rusting heavily with yellow streaks running down the wall; the strokes were bulging with flaking rust, and some corners were already severely degraded. The owner's directive was clear: preserve the existing characters—replacing them entirely would be too costly. Instead, we will focus on a thorough renovation involving rust removal and repainting to ensure a solid, durable finish. As key elements of the site signage, these perimeter wall characters serve as the face of the facility, but...
厂区围墙大字翻新从东墙拐角开干。上月去看，钢字锈得顺墙淌黄水，笔画鼓出锈皮，个别角位已经糟透。业主的意思很明确：字要留住，重新做一套太费钱，就把除锈喷漆的翻新账做扎实。厂区标识里，围墙大字是门面，可门面也得里子先过硬。这类活不显眼，周期又正好赶在厂区停产检修的窗口里，两不耽误。
动手前先把锈情分级。我们拿小锤逐字敲过去：声音实的是锈斑，打磨到位即可；锈皮鼓层的磨到露出铁色；敲着发空、钢板糟了的，局部割掉补焊加固，糟透的笔画按原样激光下料补块。锈穿的角位切下去，钢板薄得像纸，幸亏来得还不算晚。分级结果用粉笔写在字脚边上，锈斑区、补焊区、换块区一目了然，谁磨谁补各有分工。角磨机和针枪配合着走，边角和焊缝拿手工磨到位。除锈是慢工，省了这道，后头喷什么漆都白搭。
除锈当天就得封底，隔一夜闪锈又冒出来。底漆先走两道环氧富锌底漆，面漆用聚氨酯户外漆两道，每道间隔按干燥要求来，急不得。喷枪两遍成活，先薄后厚，头道盖底找平，二道出光；字腔内侧和背沿拿小笔刷补到，雨水冲的都是背后，防锈全靠这一笔。漆料进场前核了批次和出厂日期，过期漆再便宜也不收，调漆按当天用量现调，隔夜的余漆宁可作废。
户外漆面吃天气：湿度大不动枪，四级风以上停活，排期表提前一周圈出天气窗口。色号按原厂色卡比对，我们在现场喷了小样块，让老板对着旧字认过，才批量往下走。
脚手架沿墙搭设，靠路一侧全封闭围挡，底部压沙袋，围挡网眼挂防尘布，漆雾不外飘。翻新改色之外还有配套活：墙面淌过的锈痕用同系列外墙漆收掉，字脚松动的补栓加固，背架焊点逐一复查做防锈，缺笔画的位置补完打磨接色，新旧漆交界拿细砂纸打毛再过渡，远看一个色，近看不留痕。字与墙之间的垫块也换了一批，碎掉的水泥垫换成尼龙垫块再上帽，雨水积不住。
一周多收工，夜里打灯看剪影，笔画边缘发乌的地方再补一道。业主绕墙走了一圈，提了个边角，当场记下，次日补完拍了回传照片；他说这套字陪厂区搬过一次门牌，留着踏实，我们应下来，翻新可以，形不许走样。没动原字结构，费用比重新做字省下一大截，工序却一道没少——围墙大字翻新的账就是这么算：省下的钱，是提前花在对的工序上的工。