镀锌无铬钝化剂 热镀锌无铬钝化剂 镀锌层无铬钝化剂 无铬钝化剂

　　一、产品编号yj-653

　　i. product number yj-653

　　二、产品特点：

　　2. product characteristics:

　　1．不含铬元素等有害重金属，完全环保型溶液。

　　1. completely environmentally friendly solution without harmful heavy metals such as chromium.

　　2．本品能显著提高镀锌板的抗蚀性能，形成的白色钝化膜致密性高，钝化后的工件美观性非常好，效果明显优于铬钝化。

　　2. this product can remarkably improve the corrosion resistance of galvanized sheet. the white passivation film formed has high compactness. the workpiece after passivation has very good aesthetics, and the effect is obviously better than that of chromium passivation.

　　3．消耗量小，槽液稳定。

　　3. small consumption and stable tank liquid.

　　4．槽液控制简单，容易操作，可以用酸碱滴定法进行槽液控制。

　　4. the tank liquid control is simple and easy to operate. the acid-base titration method can be used to control the tank liquid.

　　三、使用范围：

　　3. scope of use:

　　热镀锌板、电镀锌板、镀铝锌板等镀锌板表面钝化处理。

　　surface passivation of galvanized sheets, such as hot-dip galvanized sheets, galvanized sheets and aluminized galvanized sheets.

　　四、技术指标：

　　iv. technical indicators:

　　1．ph值：2-3

　　1. ph value: 2-3

　　2．适用于浸渍法和喷淋法。

　　2. suitable for impregnation and spraying.

　　3．钝化时间：浸6秒~8秒后，取出工件在空气中停留3秒。再水洗。

　　3. passivation time: after soaking for 6-8 seconds, the workpiece is taken out and stayed in air for 3 seconds. rinse again.

　　4．钝化槽液温度：常温

　　4. passivation bath temperature: room temperature

　　五、工艺流程：

　　5. process flow:

　　方案一：适用于镀锌板生产线 镀锌→水洗（用冷水）→钝化→干燥

　　scheme 1: suitable for galvanizing washing (cold water) passivation drying in galvanized sheet production line

　　方案二：适用于镀锌工件

　　scheme 2: suitable for galvanized workpieces

　　脱脂→水洗→钝化→水洗（用冷水）→干燥

　　degreasing washing passivation washing drying

　　注：如果镀锌件表面无油污，可省去脱脂工艺。

　　note: if there is no oil stain on the surface of galvanized parts, degreasing process can be omitted.

　　六、备注：不含铬，符合欧盟rohs指令。

　　note: it does not contain chromium and conforms to eu rohs directive.