Drying lumber quality wood

Drying lumber - determine the moisture content of wood

Before drying lumber, you need to check its humidity, because dehydration may not be necessary.The most common methods of determining the moisture content of wood and the weight is electric. Electric way to require the use of a special device - the meter.Passing an electric current through the timber it determines its ohmic resistance is dependent on its moisture content.

When weight determining the moisture from the board saw off a small portion is weighed and placed in an oven where the temperature is 105 ° C.After the test piece is weighed complete cycle, and the measurement results are compared.

Excessive humidity lumber is the cause of early deterioration of wooden structures, formation of mold and mildew.Such wood is treated badly, and in the process of shrinkage warp and crack.Too dry the wood will absorb moisture and swell, which also lead to its deformation.

lumber drying technology - methods of transaction

There are various ways of processing of wood, but the most affordable and common - and the atmospheric chamber technology of lumber drying.Below, we briefly describe the features of each approach.During atmospheric drying wood is outdoors or under a canopy.This type of treatment is very slow, because the low temperature water return almost does not occur, but in winter this process practically stops.

Air drying is sometimes used before the Chamber.Special facilities for the treatment of wood, which is used for dewatering the heated air or steam, called the drying chamber.This technology does not depend on the weather conditions, and also allows the drying chamber to receive the timber at a predetermined humidity.

Dryer boards - are building their own hands

tumble lumber own hands - quite troublesome thing in the building, so the erection is necessary to carefully prepare.Wood species and thickness of the boards to be dried are of great importance.Homemade camera quickly pay for all the costs, as dried timber is more expensive than crude.

Dryer boards, as well as any other building, begins to build a foundation.By area, it can be any, but the structure of small size will be more cost-effective, that is, to build a few small cameras will be much more economical than one big one.

frame is assembled from aluminum profile, since the metal is not subject to corrosion.Then the frame is sewn aluminum sheets, to which is attached insulation thickness of 10 cm. Requires fireproof and elastic insulation.

lumber dryer is to be sealed and allow to control the humidity, temperature and air circulation.Paul was covered with roofing material, and sprinkle sawdust.The following put dried boards not wide (1-1.5 m) stacks.At the height of the stack can be any, depending on the height of the room.Between the rows of lumber you need to put sealing bars.

most economical and simple to operate are drying chambers for sawn timber with forced air circulation.With the help of the fans warm air is forced through the stack, laid across the air flow.