ABSTRACT
Definition of Drying for Aqueous Parts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 383 Historical Perspective on the Drying Process . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 384 Types of Physical Drying Techniques for Aqueous Cleaning Technology. . . . . . . . . . . . . 385
Centrifugal Spin Drying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 385 Desiccant Bulk Drying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 386 Forced Air Drying without Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 387 Forced Air Drying with Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 388 High-Velocity Air Blowoff (Compressed Air and Blowers) . . . . . . . . . . . . . . . . . . . 389
Compressed Air . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 389 Blowers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 391
Low-Velocity Air Drying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 392 Radiant Heat . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 393 Spot Drying (Vacuum Hoses and Compressed Air Blowoff Nozzles) . . . . . . . . . . 393
Vacuum Hoses . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394 Compressed Air Blowoff Nozzles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 394
Vacuum Chamber Drying . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395 Integration of Drying Systems with Cleaning Systems . . . . . . . . . . . . . . . . . . . . . . . . . . . . 395
DEFINITION OF DRYING FOR AQUEOUS PARTS
There are two primary categories of parts-drying technologies for aqueous cleaning systems. There is chemical displacement drying, where typically organic solvents are used to displace water from a component, and physical drying, the topic of this chapter. This chapter focuses on the most widely used methods, i.e., those that use an exchange of air throughout the component by various means to blast, strip, or evaporate moisture from the exterior and interior of a component.
