1, what is black walnut:

① There are obvious differences between wood heartwood and sapwood, the sapwood is light tan to light chestnut brown, the heartwood is reddish brown to chestnut brown, with occasional purple and dark stripes, and the air exposed for a long time is chocolate.

(2) growth ring is obviously rich in logs in North America and Northern Europe.

(3) Planing veneer is often used in the wooden parts of construction projects, senior classroom furniture and the surfaces of tables and chairs.

(4) Traditional wood bark can be used for the surface of piano and the interior decoration of high-end cars, and its precious California black walnut bark can be used for the interior decoration of high-end clubs such as Mercedes-Benz and BMW.

⑤ American black walnut furniture has become a very sought-after raw material for furniture and handicrafts in China in recent years because of its color and texture, and the value of logs is about 6000-8000 yuan/cubic meter.

⑥ Now it has risen to about 1.3- 1.8 million yuan/cubic meter, and the price of special specifications has even reached more than 20,000 yuan/cubic meter, with huge profit margin. ⑦ Some "black-hearted" vendors use other wood with similar color or texture instead of black walnut, and the selected wood is mainly Catalpa bungeana and Fraxinus mandshurica.

2, the difference between catalpa bungeana and black walnut:

① Look from the pattern, the patterns of the rings are all similar. ② But there are dense brown holes in the rings of black walnut, but there are no dense brown holes in the rings of Catalpa bungeana.

③ Judging from the degree of brown holes, Catalpa bungeana has fewer brown holes and black walnut has more. The brown holes of Catalpa bungeana are more evenly distributed. Black walnut is distributed according to the annual ring line, and the closer it is to the annual ring line, the more it is.

④ In terms of color, black walnut is dark, but the color is uneven, ranging from fawn to chestnut brown, while the color difference of beech heartwood is small. ⑤ From the point of view of wood, catalpa bungeana is slightly softer than black walnut.

3. The difference between Fraxinus mandshurica and black walnut:

① Fraxinus mandshurica is flat, tough, dense and wide, giving people a sense of wildness.

② The texture of black walnut is irregular, with good texture and moderate hardness.

③ Fraxinus mandshurica has clear and beautiful texture and beautiful luster, which can imitate precious tree species.

④ The color lines of black walnut are not all uniform chocolate color, but are presented in people's eyes as a natural image, which is not easy for other woods to imitate.

4, the difference between true and false black walnut:

0 1 color

(1) Walnut heartwood is usually light brown to brown.

However, its color and stripes usually change with different places of origin. Walnuts from Southeast Asia and China are lighter in color.

Under normal circumstances, the walnuts we choose to make furniture are all light-colored walnuts. Walnut sapwood is milky white, heartwood is light brown to dark chocolate, with occasional purple and dark stripes.

④ The color transition of real walnut pattern is smooth, and the pseudo color is too fast, which can clearly distinguish black from brown.

02 wood grain

① Walnut tree lines are generally straight, sometimes wavy or curly, forming a pleasing decorative pattern, and the appearance of walnut furniture made is very beautiful and textured.

The real walnut pattern is more natural, and the fake walnut pattern feels the same. There is no difference. Due to its high density, real walnuts of the same size are heavier than fake ones.

(3) Moreover, in the sunlight, because the real walnut with the same size is denser and heavier than the fake walnut, something similar to gold wire will appear under the sunlight reflection, but the fake walnut has no such effect.

④ In the case of using wood wax oil, the wood grain of black walnut is fine, and the polishing quality is excellent.

⑤ If you touch it yourself, the primary color wax oil on black walnut without toner is very delicate and moist.

6. If it is fake black walnut, it has a certain concave and convex feeling, because colored wood wax oil will block part of the solid wood texture.