Wood knowledge-What Is Beech
Sep 17, 2018

Beech, produced in southern China, does not know this name in the north, but the wood is called Nanxun. Although it is not luxurious wood, it is widely used in traditional furniture in the Ming and Qing Dynasties, especially in the private sector.

This type of eucalyptus furniture is mostly Ming style, and its modeling and production techniques are basically the same as those of hardwood furniture such as huanghuali. It has considerable artistic value and historical value. The eucalyptus is heavy, sturdy, impact-resistant, easy to bend under steam, and can be used for making shapes and holding nails. It is a unique wood in Jiangnan with clear texture, uniform wood texture, soft and smooth color. It is heavier than most ordinary hardwoods and belongs to the upper middle level in all wood hardness rankings.

Since the Ming and Qing Dynasties, eucalyptus has always been a common material for folk furniture, and it has been followed that China's eucalyptus materials are also decreasing. In 1999, eucalyptus was even listed as a national second-class protected plant, and it was forbidden to harvest! Because no raw materials can be processed, there are few stores that directly sell domestic eucalyptus in the market. However, people who have bought furniture know that the name Eucalyptus is still often mentioned.

Most of the coffins sold in China's domestic timber market are imported, and the production areas are Europe and North America. The wood properties are stable and belong to medium and high-grade furniture materials.

Beech is a wood species commonly found in ancient Jiangnan. Those who know a little about the collection may have heard of "beech", such as clearing wooden cabinets, eucalyptus couches, and eucalyptus stools. The name "beech" is often found in traditional Chinese furniture books. In fact, it refers to the modern "beech".

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Physical properties of eucalyptus

Strong hardness, comparable to mahogany

The reason why the coffin is called the "declined aristocrat", first, because of the coffin, mahogany furniture represented by huanghuali began to occupy the high-end market; second, because of the characteristics of the coffin itself, it has the temperament of "noble" wood. For example, the top grade "blood scorpion" in eucalyptus has a red-yellow color similar to that of huanghuali, and it is not weak in both ornamental and practical. In addition, eucalyptus has a special "treasure pattern" that overlaps the wavy tip. When the grain of the wood is beautiful enough, it can even resemble the texture of the wenge. Although the coffin is not listed in the "hardwood", its hardness is higher than that of ordinary wood, and the wood is relatively heavy. This is also a manifestation of the "extraordinary" of coffin.

In addition to the advantages of wood color, texture and hardness, eucalyptus also has the advantages of good load-bearing performance and good pressure resistance.

Heavy, sturdy, impact resistant, easy to bend under steam, can be shaped, nail performance is good, but easy to crack. The texture is clear, the wood texture is uniform, the color is soft and smooth. It is heavier than most hardwoods and is prone to cracks during kiln drying and processing.

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The materials imported from Europe and the United States are good, and the import price is several times that of domestic beech. Domestic beech, also known as Cyclobalanopsis glauca, is a wood that differs from the wood, structure and wood grain of eucalyptus, and its price is low.

The eucalyptus wood is compact and heavy, the wood grain is thin and straight, and the tissue structure is less. The domestic beech wood is loose, light in weight, wood grain is not obvious, and the tissue structure is more plaque and color difference.

The eucalyptus can grow to more than 30 meters and can reach a diameter of 1.5 meters. The layers of eucalyptus are layered and richer than eucalyptus. Suzhou craftsmen call it “treasure pattern”. The eucalyptus wood is harder than ordinary wood, but it is not hardwood. Among the furniture materials used in the Ming and Qing Dynasties, the coffin has an important position and has been valued since ancient times. beech is a common material for making furniture in Suzhou. There are also many eucalyptus furniture in the north. Many of them are made up of Ming style and workmanship with Huanghua Pear. They are considered by craftsmen and collectors.

I don’t know the name in the north, but I call this wood Nanxun. Although it is not luxurious wood, it is widely used in traditional furniture in the Ming and Qing Dynasties, especially in the private sector. This type of eucalyptus furniture is mostly Ming style, and its modeling and production techniques are basically the same as those of hardwood furniture such as huanghuali. It has considerable artistic value and historical value. Alder is a genus of deciduous trees, deciduous trees, high in number, bark hard, taupe, with coarse wrinkles and small protrusions; serrated, slightly thin leaves. Spring is a light yellow flower, unisexual, monoecious. Small fruit after flowering, slightly triangular. This wood is firm and has a beautiful texture for construction and utensils.

Beech is the most common solid wood staircase used in our wood. The difference between heart and sapwood is not clear or clear. Wood white or very light yellowish brown, placed in the air can be turned into light reddish brown, the texture is straight, the muscle structure is fine, uniform, wood luster. Broad wood rays are noticeable, especially on the longitudinal section. Dark stripes or markings appear on the light background. The material has a large variation depending on the growth conditions. The wood is dry quickly, has good properties, and the wood is hard and heavy. Denmark and Northern Europe are harder and harder than others.

The average dry weight is about 961 kg/m3. The strength properties of undried materials are similar to those of European eucalyptus, but the flexural strength, stiffness, hardness, shear strength and tamper resistance of wood are about 20% higher than that of European eucalyptus, and the impact resistance is about 40% higher. Wood has excellent bending properties and is not difficult to process, but it often differs depending on the material.

European eucalyptus is divided into red and white. The two are the same kind of wood before drying. The difference is that the red sorghum has a steam fumigation process when drying, but the white scorpion does not. Therefore, the English name of the red dragonfly is STEAMED BEECH (meaning “steamed fumace by steam”), and the white enamel is UNSTEAMED BEECH (meaning “a coffin not steamed”). The length of steam fumigation determines the depth of the red wood.

In general, the Italian red dragonfly is darker in color, while the French and Danish colors are lighter. One thing to note is that white pheasant is not white, but lighter pink. The so-called "waterline" is the heartwood of eucalyptus, and the heartwood of eucalyptus is reddish brown to brown after drying. If the heartwood is cut during the process of plate making, there will be reddish brown or brown stripes or ellipses on the plate (depending on the shape of the heartwood) It does not affect the strength and other physical properties of the wood, but it is generally considered to affect the appearance. The eucalyptus boards produced by the mills in Romania, Poland and Turkey generally have more water lines. In general, dried sheets are used in the north and the moisture content should be below 12%. When making stairs or furniture, it should be 8%-10%. When used in the South, it should not exceed 15%.

Due to the ease of taking materials and the “extraordinary talent”, it is often used for shipbuilding, construction and bridges. In daily life, furniture, wooden doors, floors, crafts, etc., often see the figure of beech

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