Tube Condensing Unit Marine Condenser
Shell and Tube Heat Exchanger
Shell and tube heat exchanger in the production, the tube and the
tube of the general use of manual arc
welding, weld shape there are different degrees of defects, such as
depression, pores, slag, etc., the
distribution of weld stress is not uniform.
When used in the tube part of the general contact with the
industrial cooling water, and industrial cooling
water impurities, salts, gases, microorganisms will constitute the
tube and weld corrosion, which is what we
often say electrochemical corrosion.
Studies have shown that industrial water, whether fresh or
seawater, will have a variety of ions and
dissolved oxygen, which chloride ion and oxygen concentration
changes, the corrosion of metal plays an
important role in the shape.
In addition, the complexity of the metal structure will also affect
the corrosion pattern. Therefore, the
corrosion of the tube plate and the pipe weld is mainly pitting
corrosion and crevice corrosion. From the
outside, the tube plate surface will have many corrosion products
and accumulation of objects, the
distribution of the size of the pit.
When the sea water as the medium, but also produce galvanic
corrosion. Chemical corrosion is the
corrosion of the medium, the heat exchanger tube board contact with
a variety of chemical media, will be
subject to chemical corrosion.
In addition, the heat exchanger tube plate and the heat transfer
tube will produce a certain degree of