2. Dalbergia odorifera, winged bean, belonging to Leguminosae, winged bean. Common commercial raw materials mainly include Eupatorium odoratum mainly produced in South America. Wood is porous. Sapwood is clearly identifiable; Heartwood is yellowish brown to reddish brown, often with banded pinstripes; The sapwood is yellow and white, 2-4 cm thick. The annual rings are slightly more obvious. The pores are visible to the naked eye and dispersed. Under the magnifying glass, the axial parenchyma is obvious, which is wing-shaped, wing-shaped and wheel-shaped. You can see wood rays under a magnifying glass.
3. Big trees, 20~27m high and 0.5~0.8m in diameter. There are 100 species in this genus, which are distributed in tropical America and Africa. The difference between heartwood and sapwood is obvious. Heartwood is reddish brown to purplish red, often with dark brown concentric stripes. The sapwood is red and white to light brown. The rings are not obvious. Good gloss. The wood structure is delicate and slightly uniform; High strength; Corrosion resistance. Dry slowly, with slight cracks. The air-drying density is 0.89 ~1.04g/cm3.
4.Ragwood (scientific name: Cordia dichotoma Forst). F.) is a kind of tree belonging to ragweed, and its height can reach 8 meters. Leaf blade sparsely entire, both surfaces sparsely pubescent or glabrous; Petiole is slender, cymes are born at the top of lateral branches with leaves, and flowers are type ⅱ, sessile; Calyx bell-shaped, lobes triangular, unequal; Corolla white, slightly equal to calyx, degenerated pistil spherical; Drupe is nearly spherical, yellow or reddish, flowering from February to April and bearing fruit from June to August.
5. Iron wood, iron wood or "iron plow wood" or "iron chestnut wood" is the highest and largest among several hardwoods, and its value is relatively low. Tielimu sometimes has patterns as thick as chicken wings. Furniture factories used to use it as chicken wings. Tielimu is a tall evergreen tree with an upright trunk, with a height of more than ten feet and a diameter of more than ten feet. Native to East India. Both Guangdong and Guangxi are distributed in China: the wood is hard and durable, the heartwood is dark red, the color and texture are slightly similar to that of chicken wing wood, the texture is rough and the brown eyes are obvious. It is mainly used for buildings in tropical areas and is very durable.
Red sandalwood, dragon and phoenix sandalwood, sandalwood, olive ebony, blood sandalwood, Brazilian cherry wood,
Brazilian tulip wood, rag wood, Honduran mahogany, China beech wood.
Extended data:
Because rosewood is very rare, only members of the royal family were eligible to own it in ancient times, so it has the reputation of "the wood of emperors" and is also the most valuable wood in the world.
Five maintenance skills
1, moistureproof
As long as it is wood, it will expand when it is wet and contract when it is dry, which is caused by the change of water absorption by the cell wall.
Simply put, there is a balance between water and air in wood. If the moisture content in the air outside the wood is lower than the evaporation of the moisture inside the wood, some of it will cause cracking. If the air humidity is higher than the moisture content of wood, wood will absorb the moisture in the outside air in reverse, causing expansion and water will cause atomization.
Therefore, in autumn and winter, it needs maintenance to prevent cracking; In spring and summer, especially in the rainy season, it is even more moisture-proof. Once it gets wet, rosewood absorbs the moisture in the air and expands and atomizes (the surface of rosewood is foggy and dull), so the board is not bright. At this time, the best way is to seal the board.
2. Waterproof material
There is a lot of rain in midsummer, so it happens occasionally, and rosewood avoids getting wet. If you get caught in the rain and soak in the water, it will be wasted for a long time. If you are unfortunately caught in the rain, dry it immediately and put it in a cool and ventilated place to dry naturally.
Step 3 protect yourself from the sun
When the temperature is high in summer, if you stay outdoors for a long time, in order to avoid fading, it is best to take it down to avoid long exposure.
4. Air conditioning
In summer, the outdoor temperature is high, and there are many indoor and indoor air conditioners. Be sure not to put it under the air conditioner. In addition to atomization, the environment of sudden heating and sudden cooling is also easy to cause cracking. Therefore, in order to avoid cracking of beloved rosewood, try to keep the temperature constant, and don't put it at the air conditioning port.
References:
Baidu Encyclopedia-Rosewood (Leguminosae Rosewood)
Baidu encyclopedia-wood