| Even if you are a professional
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| | specifications of the job in hand. Often,
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| researching information on metal bellows
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| | a custom-made alloy can be designed to
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| for technical solutions and for
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| | meet a job's requirements.
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| installation of industrial processes, it
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| | What specific applications are there for
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| can sometimes be helpful (even to the
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| | this technology?
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| professional) to gain an overview of the
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| | The central purpose for metal bellows is
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| product, what it can do, and just what
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| | in fluid management. This, however, finds
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| situations it has been developed for.
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| | use in a great many things. Expansion
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| This guide will give you a few general
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| | joint solutions have been employed in
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| pointers, and hopefully answer some of
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| | industries and technologies such as
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| the questions you have. Of course, it is
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| | altitude sensors, piping for industrial
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| a guide only; for detailed answers to any
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| | coolant, the petrochemical industry,
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| specific questions you have about
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| | applications involving steam, the nuclear
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| projects you may have in mind, we
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| | power industry, medical technology, waste
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| recommend contacting an expert in the
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| | management, and some automotive engines
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| field.
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| | and pump systems.
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| What does a metal bellows actually do?
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| | What kind of tolerances can be built into
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| A metal bellows is the term for an
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| | it?
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| attachment on piping typically designed
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| | A metal bellows can be designed to cope
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| to absorb and mitigate the effects of
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| | with a wide variety of different stresses
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| directional change and to minimize any
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| | and pressures. The three main types of
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| issues arising from this such as
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| | movement are referred to as lateral,
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| clogging, pressure points on the bend, or
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| | axial and angular.
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| expansion of the joint.
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| | Lateral is a movement of the two ends of
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| It is a development of the basic
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| | the joint where those ends stay parallel
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| expansion joint idea used on
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| | to each other. Axial is either the
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| installations like rail tracks to deal
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| | stretching or flattening of the expansion
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| with the expansion and contraction of
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| | joint along its length. Angular movement
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| metal. The central concept to keep in
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| | is simply the curving round of the joint
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| mind is that when subjected to force,
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| | along its axis. At present, expansion
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| either heat or pressure, the metal
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| | joints can be designed to cope with any
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| bellows allows the expansion joint to
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| | of these three specific stress types.
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| bend rather than break.
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| | The one type of movement they cannot deal
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| Why metal?
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| | with, however, is torsion, namely
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| Metal expansion joints are, simply put,
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| | twisting along the piece's length. This
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| stronger than the alternatives (plastic,
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| | is best avoided by keeping the joint
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| ceramics, etc). They are also easier to
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| | fastened in place by external
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| shape (although metal bellows are
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| | attachments, and taking care with the
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| relatively intensive to create).
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| | fastening when attaching it in the first
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| They are also more capable of coping with
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| | place.
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| extremes of temperature, as they
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| | How much heat can a metal bellows
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| themselves can expand and contract
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| | withstand?
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| without sustaining the weathering damage
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| | This varies greatly depending upon a
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| that hard plastic would. There are rubber
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| | variety of factors; the alloy chosen,
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| versions available, but their use is
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| | whether or not any anti-corrosives are
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| strictly limited, and in any situations
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| | added, the design of the bellows itself,
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| involving heat, for example, they are
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| | and whether it was welded or shaped.
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| impractical.
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| | There are certain practical solutions and
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| Heat-tolerant bellows and expansion
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| | physical limits, but as long as the heat
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| joints can be made from a variety of
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| | is foreseen, joint solutions can usually
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| metal alloys, such as steel, titanium,
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| | be found.
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| and many others according to the
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