Plate type heat exchanger and method for manufacture thereof

Details Plate type heat exchanger and method for manufacture thereof Plate type heat exchanger and method for manufacture thereof

2007-02-20

2007-02-20

Zimmerman, John J. (Department: 1775)

Stock material or miscellaneous articles

All metal or with adjacent metals

Composite; i.e., plural, adjacent, spatially distinct metal...

C428S680000, C428S685000, C420S443000, C420S445000, C165S905000, C228S248100, C228S262420

Reexamination Certificate

active

10451618

ABSTRACT:
A plate type heat exchanger wherein contacting portions of laminated plural plates and fins or contacting portions of laminated plural plates are brazed to form a heat exchange area, characterized in that at least the surface of a plate or fin contacting with a fluid is covered with an alloy comprising in weight ratio 25–35% of chromium, 5–7% of phosphorus, 3–5% of silicon, 0.001–0.1% of at least one selected from the group consisting of aluminum, calcium, yttrium and mischmetal, and balance containing mainly nickel. The alloy may contain 15% or less of iron and or 10% or less of molybdenum.The plate type exchanger exhibits enhanced pressure resistance and is excellent in corrosion resistance.

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