耐CASS试验达500小时的镀铬层

（微凝灰岩聚合物镀铬层封孔涂覆剂Micro-tuff polymer polymer chrome plating sealing agent）

1，微凝灰岩聚合物镀铬层封孔涂覆剂简介：

微凝灰岩聚合物是一种特殊工艺，可大大延长硬铬，钢和化学镀镍及耐磨电镀层表面的使用寿命。微凝灰岩浸渍在镀层的微孔中，有效地密封涂层表面。该聚合物可在高腐蚀和磨损应用中提供最佳性能。

Micro-tuffite polymer is a special process that greatly extends the service life of hard chrome, steel and electroless nickel and wear-resistant plating surfaces. The micro-tuff is impregnated into the micropores of the coating to effectively seal the surface of the coating. The polymer provides optimum performance in high corrosion and wear applications.

2， 微凝灰岩聚合物镀铬层封孔涂覆剂物理性状

Micro

 微凝灰岩聚合物镀铬层封孔涂覆剂

棒状结构，直径1.9英寸长度6英寸Rod-shaped structure, 1.9 inches in diameter and 6 inches in length

3，微凝灰岩聚合物镀铬层封孔涂覆剂优点：

· 减少零件摩擦

· 改善释放并增加润滑性

· 减少磨损和磨损

· 耐热性高达650摄氏度

· 增加耐腐蚀性

· 微凝灰岩在钢上铬的摩擦系数0.04

· 易于从基材上剥离而不会损坏基材,

4，各种摩擦系数对比

摩擦系数                                     静态的

钢上钢：                                       0.60

钢上的微凝灰岩：                        0.18

传统的钢铁镀铬：                            0.16

钢上镀铬涂微凝灰岩：                  0.04

由此可以看出钢上镀铬涂微凝灰岩摩擦系数最小Micro Tuff表面相当光滑，摩擦系数低得多。润滑性的增加提供了独特的“不粘”特性，并且具有大大增加的释放性能。

5，盐雾试验测试

权威部门进行的测试表明，活塞杆镀铬层在ASTM B-117盐雾试验中可以达到96小时，使用微凝灰岩聚合物密封的双层镀铬板（底层脉冲无孔铬，面层微裂纹镀铬）在ASTM B-117盐雾试验中可以达到1000小时。CASS试验增加65倍，使用5%盐雾测试增加106倍。微凝灰岩聚合物镀铬层封孔涂覆剂，应用于液压杆，进给螺杆，工具，模具，模具和相关的工业部件。Micro Tuff涂布器专为镀铬而开发，后来经过扩展，几乎可以密封任何金属表面。它可用于改善以下表面：工具钢，低合金钢，不锈钢，热喷涂，铝，铜，硬铬，镍，化学镀镍和许多其他表面。

Tests conducted by authoritative departments have shown that the chrome plating of the piston rod can reach 96 hours in the ASTM B-117 salt spray test, using a double chrome plate sealed with micro-glyte polymer (bottom pulse non-porous chrome, surface layer microcrack chrome plating) The ASTM B-117 salt spray test can reach 1000 hours. The CASS test was increased by a factor of 65 and increased by a factor of 106 using a 5% salt spray test. Micro-tuff polymer chrome-plated sealing agent for hydraulic rods, feed screws, tools, molds, molds and related industrial components. Developed specifically for chrome plating, the Micro Tuff applicator has been expanded to seal virtually any metal surface. It can be used to improve the following surfaces: tool steel, low alloy steel, stainless steel, thermal spray, aluminum, copper, hard chrome, nickel, electroless nickel and many other surfaces.

油缸轴镀铬后涂微凝灰岩CASS试验可达500小时

图一：镀铬层显微图片400倍，

图二：是镀铬涂涂微凝灰岩的显微图片400倍

浸渍前横截面400X

Cross section 400X before impregnation

浸渍后横截面400X

After immersion, cross section 400X

可以看出镀铬后涂微凝灰岩的400倍显微图孔隙率几乎为零

6，微凝灰岩聚合物镀铬层封孔涂覆剂的孔隙度

微凝灰岩聚合物镀铬层封孔涂覆剂填充金属和镀层中的微观孔隙，浸渍到晶体结构中完全密封基体及镀层，这种密封使表面性能更好

7，微凝灰岩聚合物镀铬层封孔涂覆剂的附着力

通过消除可能破坏沉积物导致涂层分离的离子的腐蚀作用，改善镀层的结合力

7，涂布方法：

微凝灰岩聚合物由长链聚合物和游离铬以及有机浸渍剂组成棒状。将工件加热至275至300，(135-150°C）刷涂或摩擦，发生化学反应，使聚合物交联并粘合到基材上。一旦涂抹，Micro Tuff浸渍表面将：

不改变尺寸，保持相同的表面颜色，耐所有溶剂，耐热性能高于1200°F

一条棒可以处理125000-130000平方英寸表面积

The micro-tuffite polymer is composed of a long-chain polymer and free chromium and an organic impregnating agent. The workpiece is heated to 275 to 300 °F, (135-150 ° C) by brushing or rubbing, and a chemical reaction takes place to crosslink and bond the polymer to the substrate. Once applied, the Micro Tuff impregnated surface will:

No change in size, maintain the same surface color, resist all solvents, heat resistance higher than 1200 °F

A rod can handle 125,000-130,000 square inches of surface area