Birch has been famous since ancient times, and its beautiful natural wood grain has made the ancients a treasure. The birch skin is often used as a scabbard and scabbard to carry; the birch and the "Hua" homophonic, plus the wood word, so some people say that birch The ancients also said that they were gorgeous when they took the righteousness; in short, the birch wood was old and famous. The birch annual rings are slightly obvious, the texture is straight and obvious, the material structure is delicate and soft, the texture is soft or moderate; the birch is flexible, the processing performance is good, the cut surface is smooth, the paint and glue performance are good; the birch is medium-grade wood, solid wood and veneer common. Produced in northeastern China, the wood is fine and pale yellowish, and its roots and nodules are multi-patterned; because the birch texture is very beautiful, it is often used for carving parts, and the ancients often use it as a door core decoration; the bark of the birch is flexible and beautiful, the ancients are very Have feelings, often inlaid with scabbard bow back and so on.
In the current furniture market, birch is mainly made of birch in the southwest. There are many styles, including Chinese furniture, Southeast Asian furniture, Japanese style, Korean style... Most of them are European style, especially French classical furniture; in history France Furniture, especially the classical court and rustic style, all use cherry wood, which originated from the hobby of the French people, but also from the beauty of cherry wood and the popularity in Europe; unfortunately the wood grain of the southwest birch is like cherry wood; so some The "smart profiteer" was brainstorming, and the game of peach and plum was started. As a result, the beautiful birch became a scapegoat....
Southwestern birch
Distribution of southwestern birch : Southwest birch is concentrated in southwestern, southern, southeastern and western Guangxi, southwestern, northwestern and southern Guizhou. These distribution areas are connected with the distribution areas of Vietnam, Laos and Myanmar. The central distribution area of ​​birch. The horizontal distribution range is approximately 97°3′′ to 108°E, 19 to 25°N, and vertically distributed at an altitude of 200 to 2800 m.
The color of southwestern birch is also from light red to deep red. The texture is straight, the gloss is poor, the stain is dirty, the "V" pattern is very rare, the wood structure is fine, and the wave pattern, the rotating pattern, the tree tumor and the bird can be formed on different cutting surfaces. Eye pattern, but no light black marks.
1. Birch and color wood are fine in structure, strong in strength, good in color, shiny, no special smell and taste.
2. The weight of birch is moderate, the hardness is soft or medium, the shrinkage is medium, the strength is low to medium or medium, and the impact toughness is medium or high.
3, Birch texture is dense and straight, the structure is very fine, uniform and tough, flexible, easy to cut, strong plasticity, smooth planing surface, solid material after drying, good processing performance, easy to saw, plan, car, spin, grip Strong nail force, but easy to nail and split, it is best to punch holes before nailing, paint and glue performance is good.
Southwest birch furniture
Advantages of southwest birch solid wood furniture
1, the wood grain is beautiful, a bit like water wave texture, full of mountain atmosphere: for the layman of solid wood furniture, the most representative wood grain is an important factor in determining furniture purchase. In the wood type, the texture of birch is often compared with oak, and the fine grain is the commonality between the two; the difference is that the "mountain pattern" of the oak is more regular, with clear peaks and The wood grain of the outer layer is expanded; the mountain shape of the birch is more "wild", and a ripple may have 2-3 peaks. The number and shape of the stacked peaks are different, and the unique texture creates a water wave-like visual effect. It has its own flavor; because of this, birch grain veneer has always been well-received in panel furniture.
2. The growth of southwestern birch is fast, the output is high, the main pole is straight, the tree shape is neat, and it is also used for greening of street trees. The test results in the tropical test center: the 20-year-old tree has a breast diameter of 25 cm and a height of 20 m. At present, the price of the southwest birch wood market: 2000-3000 yuan / cubic meter.
3, Southwest birch wood has been listed as a precious material and widely used, its wood is light reddish brown, slightly lustrous, medium to high mechanical strength, birch wood hard structure is delicate and flexible, processing performance is quite good, often used for solid wood carving Partially; birch has a smooth planing surface and good paint and adhesive properties.
4. After the drying of the southwest birch wood, it is not warped or cracked, the shrinkage ratio is small, it is not easy to be deformed, and the pattern and color are beautiful. In addition to traditional furniture, construction and military use, it is commonly used as plywood, high-grade furniture, wood flooring and interior decoration materials; Its resonance performance is good, and it is also an excellent instrument material.
Disadvantages of southwest birch solid wood furniture:
1. Birch grown in the northern hemisphere, with shiny surface and smooth mechanism; yellowish white with brown, obvious annual rings, pure wood, slightly hard, fine structure, strong mechanical strength, elasticity, hygroscopicity It is easy to crack and warp when dry; it is not very durable in the environment of easy decay, and it is more used in the form of splint, but for the wet southern weather, if the process is proper and proper, it is not fatal.
2, the Birch in the northeastern part of Northeast China, the wood is fine and pale yellowish, the fiber has poor shear resistance, and it is easy to "Qiqiu".
Say the world: birch furniture, if the drying process, polishing process is not suitable for coastal use, especially in Shanghai, tides and other places with rainy season, almost no birch floor, the reason is the hygroscopicity of birch Big.
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