" " wisno wood furniture finishing: Hardwood for woodworking industry.

Tuesday, December 4, 2012

Hardwood for woodworking industry.

The woodworking industry classifies lumber into hardwood and softwood. This classification is often a bit confusing because the term hardwood can be quickly meant that it consists of wood types that are physically hard. Yes, in general the hardwood timber usually has higher hardness than the softwood. However, there are several types of wood that are classified as hardwood is physically softer than softwood lumber while some softwood are harder than the hardwood. Balsa is he softer hardwood with hardness is less than most of the softwood.  While yew or coconut trees are some sample of the “hard” softwood which have hardness higher than most of hardwood. But however, then hardest hardwood is still much harder than the hardest softwood.
The hardwood is defined as the wood produced by the dichotylae (non angiosperm) tree. This type of trees proliferates
naturally by seeds. When the seed start to grow, its seed will split into two and then grow as a tree with many branches. This type of tree can be recognized because it has a taproot and broad leaves. In the “four season” area the tree shed their leaves during the fall and winter, and grows its leaves during the spring and summer. In the tropics or sub-tropics they actually they act the same but because there is no drastic differences in climate, they still have their green leaves and remain evergreen forever.





 
hardwood tree
 picture is from: wood preservation

The hardwood traits could be seen on the wood cell structure which is reflected in the pattern of grain and pores of the wood. The hardwood grows in diameter with the formation of new cells in the cambium as the initial of the wood formation. The cambium grows to become sapwood and finally become the heartwood as the final form. The wood formation growth has annually cycle that depends on the tree species and climatic conditions. The cycle of the seasons of the year will be reflected in the annual cycle of trees reflected in the pattern of grains and pores.

hardwood cambium structure
picture is taken from:  jenis-jenis hutan tropis

There are many hardwood timber species, and generally they are used in woodworking industry because of the uniqueness and beauty instead of its strength and functional. Some types of wood such as: rosewood, walnut, rosewood, teak, mahogany, oak are examples of the hardwood which is not only hard and strong but also has beautiful appearance. We can find much hardwood is used as raw material for furniture, flooring, doors, paneling, wall and many decorative products.
The hardwood timber is comprised of many species, each of which has a special looked and character. The wood processing has to be done carefully in order to keep the quality of the timber. The proper cutting, drying and machining is needed to produce wood that is not only physically strong, but also to maintain the beauty and uniqueness. The anti fungi and anti insect chemical is needed at the cutting process to prevent the problems caused by fungi or insect. The drying process should be done in controlled, too fast drying could spoil the appearance of the wood. The machining, designing and finishing should also according to the uniqueness and natural beauty of wood.


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