不锈钢电镀黑铬工艺流程

不锈钢电镀黑铬工艺流程

英文回答：

Black Chromium Plating on Stainless Steel.

Process Flow:

1. Pre-Cleaning:

Clean the stainless steel surface to remove any dirt, oil, or grease. Typically, this involves using a degreaser

or alkaline cleaner.

2. Activation:

Immerse the stainless steel in an activation

solution to remove any passivation layer and promote adhesion of the black chromium coating. This solution typically contains hydrofluoric acid or chromic acid.

3. Copper Plating:

Plate the stainless steel with a thin layer of copper to provide a conductive surface for the black chromium. This is typically done in a cyanide copper

plating bath.

4. Nickel Plating:

Plate the copper-plated stainless steel with a layer of nickel to improve the corrosion resistance and

durability of the black chromium coating. This is typically done in a nickel sulfamate plating bath.

5. Black Chromium Plating:

Immerse the nickel-plated stainless steel in a black chromium plating solution to deposit a thin layer of black chromium on the surface. This solution typically contains chromic acid, sulfuric acid, and sodium dichromate.

6. Post-Treatment:

Rinse the black chromium-plated stainless steel thoroughly to remove any residual chemicals.

Apply a sealant or topcoat to protect the black chromium coating and enhance its durability.

中文回答：

不锈钢电镀黑铬工艺流程。

工艺流程：

1. 预处理：

清洁不锈钢表面，去除污垢、油脂等。通常使用脱脂剂或碱

性清洗剂。

2. 活化：

将不锈钢浸入活化液中，去除钝化层，促进黑铬涂层的附着。该溶液通常含有氢氟酸或铬酸。

3. 镀铜：

在不锈钢上镀上一层薄铜，提供黑铬导电表面。通常在氰化铜镀液中进行。

4. 镀镍：

在镀铜不锈钢上镀一层镍，以提高黑铬涂层的耐腐蚀性和耐用性。通常在硫酸镍镀液中进行。

5. 电镀黑铬：

将镀镍的不锈钢浸入黑铬镀液中，在表面沉积一层薄黑铬。该溶液通常含有铬酸、硫酸和重铬酸钠。

6. 后处理：

彻底冲洗黑铬镀不锈钢，去除残留化学品。

涂抹密封剂或面漆，以保护黑铬涂层并增强其耐久性。