Wood Encyclopedias - Black Litchi

First, what is black rosewood?

Black rosewood, which belongs to the genus Dalbergia in the national redwood standard, is mainly grown in the tropics and is prolific in Southeast Asian countries. Its heartwood is chestnut-brown and emits aromas with obvious black stripes. It is called "black acid." branch".

2. Which of the wood species and its structural characteristics are included in the black rosewood?

Black rosewood also includes the following types of wood species, and their wood structure characteristics are:

D1 knife Dalbergia cultrate Grah.

Bulk material. The growth wheel is not obvious or slightly obvious. The new section of heartwood is dark purple or reddish-brown, often with dark brown or chestnut-brown stripes. The hole of the tube is slightly visible to the naked eye, and the diameter of the chord is 182 μm at the largest, with an average of 118 μm; the number is very small to slightly less, and o to 12/mm2. Axial parenchyma is more and more obvious under the naked eye. The main is a concentric layered wavy shape, a sinusoidal band and a thin line. Wood fiber wall thickness. Wood rays are not visible under the naked eye; wave marks are visible under a magnifying glass; rays are organized in a single column. And more columns (most 2 to 3 columns). The new section has an acid aroma; the structure is fine; the texture is straight; the air-dry density is 0.89-1.14/cm3.

D2 Dalbergia fusca pierre

Bulk material. The growth wheel is not obvious or slightly obvious. The new section of heartwood is purple-brown, black-brown or chestnut-brown, often with distinct purple or black-brown narrow stripes. The tube holes are slightly visible under the naked eye, and the chordwise diameter is 275 μm at the largest, with an average of 143 μm; the black gum is included; the number is very small to slightly less, 1 to 6/mm2. Axial parenchyma is quite obvious, the main concentric layer is narrow band (2 to several cells wide). Wood fiber wall is very thick. Wood ray is obvious under the magnifying glass; wave marks are also common; ray organization is identical with single and multiple columns (most of 2 to 4 columns). Acid-free or very weak; fine structure; texture oblique or staggered; air dry density.

D3 Dalbergia latifolia Roxb.

Bulk material, growth wheel is not obvious or slightly obvious. The heartwood is light golden brown, dark brown, violet brown or deep purple, often with wider purple and black stripes far apart; wood chips alcoholic leachate has a distinct purple tone. The pores are apparent to the naked eye and contain gums; the diameter of the chords is 267 μm at the maximum, with an average of 144 μm; the number is as small as slightly less, and 3 to 17/17 mm2. Axial parenchyma is quite obvious, the main is a bundle of loops, poly wing and wavy narrow band. Wood fiber walls are thin to slightly thicker. Wood ray can be seen under the magnifying glass; wave marks are also common; ray organizations are homogenous in single (less) and multiple (two) columns, and sparsely shaped. The new section has an acid aroma; the structure is fine (slightly coarser than other species); the texture is staggered; the air-dry density is 0.75-1.04 g/cm3, and the majority is 0.82-1.86 g/cm3.

D4 Dalbergia louvelii R.Viguier

Bulk material. The growth wheel is not obvious. The new section of heartwood is orange-red, but it turns dark purple or black purple for a long time. The hole of the tube is not to be seen under the naked eye; the diameter of the chord is 206 μm, and the average is 149 μm; the number is at least 1 to 4 per mm2. Axial parenchyma is evident under a magnifying glass. The main line is a concentric layer of thin lines (1 to 2 cells in width) and is well organized. Wood fiber wall thickness. Wood ray can be seen under the magnifying glass; wave marks are not obvious; The acid aroma is weak; the structure is fine to fine; the texture is staggered; there is a local curl; the air-dry density is 0.95 g/cm3.

D5 East Dalbergia Dalbergia melanoxylon Guill.£Perr.

Bulk material. The growth wheel is not obvious. Heartwood is dark brown to yellowish-purple, often with black stripes. The pores are visible to the naked eye and the chordwise diameter is 133 μm at maximum; 72 μm on average; few to slightly less, 5 to 14/mm2. Axial parenchyma is less, usually not visible under the naked eye, the main from the tube type, scattered polymerization, thin lines and poly wing. Wood fiber wall is very thick. Seen under the wooden ray magnifier, the wave marks are also common, and the ray organization is identical to the single and multiple columns (two columns). Acid-free aroma or very weak; fine structure; texture usually straight; air-dry density 1.00 ~ 1.33 g/cm3.

D6 Brazilian Dalbergia Dalbergia nigra Fr. Allem.

Bulk material. The growth round is obvious. Heartwood is dark brown, chocolate to purple brown, often with distinct black narrow stripes. The tube hole is quite obvious under the naked eye, with the chord diameter being 287 μm at the largest, with an average of 143 μm; the number is very small to slightly less, 2 to 7/mm2. Axial parenchyma is evident under a magnifying glass. The main is from the tube type, ring bundle and narrow band (width 1 to 2 cells), scattered polymerization, poly wing, often more than dimple Dalbergia. Wood fiber walls are thin to thick. Wood ray is obvious under the magnifying glass, the wave mark is obvious under the magnifying glass, and the ray organization is in the same shape (single number) and multiple columns (mostly 2 to 3), and the profiled type III has obvious tendency. The new section has a rich aroma, fine structure (slightly coarser than other species), staggered texture, and air-dry density of O.86-1.01 g/cm3.

D7 Dalbergia spruceana Benth.

Bulk material. The growth round is obvious. The heartwood is red-brown and dark purple gray, often with black stripes. The hole of the tube is visible to the naked eye, and the diameter of the chord is 323 μm at the maximum, with an average of 1 92 μm; the number is at least 1 to 5 per mm 2 . Axial parenchyma is evident under a magnifying glass, and is fine-lined (1 cell in width), and the annulus is obviously bundled. Wood fiber wall is very thick. Wood ray can be seen under the magnifying glass; wave marks are not obvious; ray organization is homogeneous with single and multiple columns (mostly 2 columns). No acid aroma or very weak; fine structure; texture until slightly staggered; air dry density O.90 g/cm3.

D8 Belize Dalbergia Dalbergia stevensonii Tandl.

Dispersion porous material, semi-ring porous material tends to be obvious. The growth round is obvious. The heartwood is light reddish brown, dark brown or purple brown, often with regular or irregular black stripes and a more uniform color. The tube holes are clearly visible to the naked eye, with chordal diameters up to 269 μm, with an average of 88 μm; the number is slightly less to slightly more, 11 to 24/mm2. Axial parenchyma is slightly visible under the naked eye, and the main body is a narrow band and a thin line (most of the width of a cell, with the ray intersecting a local slightly reticulate) and loop bundle. Wood fiber wall thickness. The wood ray is slightly seen under the magnifying glass; the wave mark is visible under the magnifying glass (the overlaid structure of the wooden ray is not obvious); the ray organization is the same as the single and multiple columns. No acid aroma or very weak; fine structure; straight texture; air dry density 0.93 ~ 1.1 9 g/cm3.

III. Features and Values ​​of Black Rosewood Furniture Black rosewood is second only to red sandalwood and huanghuali. Its wooden structure is fine and the texture is very clear. The furniture produced is firm and durable, and it has been used for comparison in the Ming and Qing Dynasties. widely. Today, black rosewood furniture still has high value.

The black rosewood furniture adopts a sturdy structure and is stable and durable. It basically maintains the traditional design concept of China and integrates modern ergonomics and aesthetic requirements on the basis of this design. Therefore, it is not only old-fashioned, but also exudes the charm of modern fashion. The black rosewood furniture is mostly Ming and Qing style, some simple, bright style, smooth lines, some beautifully carved, heavy structure, no matter what kind of style is to keep the black wooden texture unique, very beautiful , as if layered mountains, or waves ups and downs of the sea, the breeze gently blowing, throwing layers of embarrassment, it is infinite delusion. This is the unique charm of black rosewood furniture.