庭院灯厂家用冷镀锌和热镀锌的目的都是为了防腐，延长路灯灯具的使用寿命，不过相比冷镀锌，热镀锌更能起到防腐的目的。
首先工艺区别：
冷镀锌也叫电镀锌，是利用电解设备将工件经过除油、酸洗后放入成分为锌盐的溶液中，并连接电解设备的负极，在工件的对面放置锌板连接在电解设备的正极 ，接通电源，利用电流从正极向负极的定向移动，就会在工件上沉积一层锌；
热镀锌是将工件除油、酸洗、浸药、烘干后浸入溶化的锌液里一定时间，提出来即可。
庭院灯外观的区别：
电镀锌外表比较光滑、明亮，采用彩色钝化工艺的电镀层也黄绿色为主色，呈七彩。采用白色钝化工艺的电镀层呈青白色或白色呈绿光，白色钝化工艺的镀层与阳光呈一定角度下略显七彩。在复杂工件的角棱部位容易产生“电烧”而成灰暗，该部位锌层较厚。在阴角部位易形成电流死角而产生欠电流灰暗区，该区域锌层较薄。工件整体无锌瘤、结块等现象。
热镀锌外观较电镀锌稍微粗糙，呈银白色，外观容易产生工艺水纹和少许滴瘤，尤其是在工件的一端较为明显。但热镀锌的锌层比电镀锌厚几十倍，防腐蚀性能 是电镀锌的几十倍。
The purpose of both cold galvanizing and hot galvanizing for garden light manufacturers is to prevent corrosion and prolong the service life of street lamps. However, compared with cold galvanizing, hot galvanizing is more effective in preventing corrosion.
First of all, the process difference:
Cold galvanizing, also called electricity galvanized, is the use of electrolytic equipment the workpiece after degreasing, pickling into the composition of zinc salt in the solution, and connect the cathode electrolytic equipment, placed in the workpiece on the opposite side of zinc plate connected to the anode electrolytic equipment, connected to the power supply, use current from the positive to the negative directional move, will deposits a layer of zinc on the workpiece;
Hot-dip galvanizing is the workpiece in addition to oil, pickling, soaking, drying after immersion in the dissolved zinc solution for a certain time, can be put out.
Differences in the appearance of garden lights:
The appearance of electrogalvanizing is smooth and bright, and the electroplating layer using color passivation process is also yellow-green and colorful. The electroplating with white passivation process is bluish white or white is green, and the coating with white passivation process is slightly colorful at a certain Angle with sunlight. The corner edge of the complex workpiece is easy to produce "electric firing" and become gray, and the zinc layer of this part is thicker. It is easy to form the current dead Angle in the negative corner and produce the dark area of undercurrent. The zinc layer in this area is thinner. The whole workpiece has no zinc tumor, caking and other phenomena.
The appearance of hot dip galvanizing is slightly rough than that of electric galvanizing, and it is silver-white. The appearance is easy to produce process water lines and a few droplet nodules, especially at one end of the workpiece. But the zinc layer of hot dip galvanizing is dozens of times thicker than that of electric galvanizing, and the corrosion resistance is dozens of times higher than that of electric galvanizing.
