#corrosive material

[jamesswordresearch]

Corrosion is the chemical and electrochemical destruction of metal or alloys by the surrounding damp and humid environment.

- Types of corrosion include:

Uniform, crevice, pitting, stress corrosion cracking, galvanic, erosion, microbial, selective dissolution (de alloying), fretting corrosion etc.

- Factors affecting corrosion are:

position of metal in electrochemical series, presence of impurities, exposure of metal to salt water, temperature, concentration of oxygen etc.

- Examples of corrosion are:

rusting of iron, tarnishing of silver, copper corrosion etc.

- Rate of corrosion:

weight loss method is used to measure corrosion rate.

- General method to prevent corrosion include:

galvanization, electroplating, painting, oiling & greasing, anodization, periodic cleaning etc.

[wannerengineering-blog-blog]

Selecting the Right Pump is Key to Handling Corrosive Materials

Wanner Engineering provides specialty pumps for demanding applications, including pumping corrosive chemicals. Companies can turn to Wanner Engineering for positive displacement (PD) pumps, which provide the smooth, low-pulse operation required for handling corrosive materials. Selecting the correct pump can prevent rapid pump wear. Industry experts typically recommend lower pump speeds when handling corrosive materials. Slowing down pump speed can significantly curtail pump wear. Many companies benefit from special PD pumps, designed to operate at reduced speeds. These PD pumps may also include hardened parts that resist pump degradation. In addition, pump operators should note that higher temperature often causes corrosive materials to become more aggressive. Lowering differential pressure can also extend pump life. With lower differential pressure, pump slippage decreases, reducing the viscosity of corrosive liquids and thereby making them less aggressive. When seeking a pump to handle corrosive chemicals, organizations should discuss their options with their preferred pump manufacturer. The best pump products offer a solid mix of durability, performance, and design simplicity to suit a range of applications.