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Forest Products Laboratory
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Madison, WI 53726-2398
Phone: (608) 231-9200
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Title: Maximum Initial Moisture Contents for Kiln-Drying 4/4 Hardwoods at High Temperatures

Source: Forest products journal Volume 24, Number 8 p. 54-56 (Aug 1974).

Author(s): Wengert, E.M.

Publication Year: 1974  View PDF »

Category: Journal Articles

Abstract: Red oak, soft maple, cherry, pecan, sweetgum, basswood, aspen, white oak, elm, hackberry, black ash, and bur oak were kiln-dried by normal-temperature (180°F maximum) and high-temperature (230°F) schedules. Degrade from warp after drying at normal temperature was compared with degrade from drying at high temperatures. Only the oaks and several boards of "wet pocket" sweetgum and aspen that were green from the saw did not dry successfully at high temperatures—they had a greater amount of honeycomb or warp than the conventionally dried material. However, these species did dry satisfactorily at high temperatures if their average MC was reduced to below 25 percent by air-drying or below 20 percent by normal-temperature kiln-drying.

Keywords: Temperature; Honeycombing; Warping; Moisture content; Drying; Quercus alba.; Tilia.; Prunus.; Carya illinoensis.; Liquidambar styraciflua.; Ulmus.; Celtis occidentalis.; Fraxinus nigra.; Quercus macrocarpa.

Publication Review Process: Non-Refereed (Other)

File size: 563 kb(s)

Date posted: 01/25/2013
RITS Product ID: 63096

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