The factors that influences the quality of solid wood furniture, < span style = "font - size: 14 px;"> Pure solid wood furniture, solid wood furniture namely through without the processing of natural wood, again without using any man-made board.Natural texture gives solid wood furniture unique aesthetic feeling, also popular with people.Solid wood furniture quality is mainly influenced by external and internal two aspects.

< sPan style = "the font-family: arial, helvetica, sans-serif."> one, external factor of

1.Temperature < / stronG >
The temperature is the main factors influencing the velocity of wood drying.Temperature, pressure, moisture in wood liquid free water viscosity, promote with the flow and diffusion of moisture in wood;Copper wire of the drying medium soluble wet ability raise, to speed up the wood surface water evaporation.But it is worth noting that if the temperature is too high, can cause the cracking of lumber, to reduce the mechanical strength and deformation, discoloration, etc., should be properly controlled.
2.Humidity
Relative humidity is woodMaterial drying speed of important factor.Under the same temperature and air velocity, the higher the relative humidity, within the medium water vapor partial pressure, the greater the wood surface water is not easy to medium evaporation, drying speed slower;When the relative humidity is low, the surface moisture to evaporate quickly, the surface moisture content is reduced, the moisture content gradient increase, increase moisture diffusion, etc, fast drying speed.But the relative humidity is too low, will cause cracking and drying defects such as cellular problems even worse.
3. air circulation speed
Air circulation speed is another factor influencing the wood drying speed.High-speed airflow can damage boundary layer on the surface of the saturated steam lumber, thus improving conditions of heat transfer, mass transfer between medium and timber, speed up the drying speed.For dry material or difficult when lumber moisture content is low, wood interior moisture movement determines the drying speed;By raising the big medium velocity to speed the surface moisture evaporating speed of no practical significance, it will increase the moisture content gradient, increase the risk to produce drying defects.So, hard to dry material does not need a medium circulation speed.
The above three factors can be artificially controlled external cause, control properly, can beOn the premise of to ensure the quality of wood drying speed up the drying speed.For example, drying needles or soft hardwood timber sheet, because inside the wood moisture movement more easily, can be appropriately increase the dry bulb temperature, lower humidity, increase air circulation velocity of medium, to speed up the drying speed.But when dry mahogany wood or thick plate, appropriate USES low temperature, high humidity and smaller air circulation speed, lest produce drying defects.
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Second, the internal factor of

< span stylE = "font - size: 14 px;"> 1.Wood species and structure characteristics of
Different species of wood with different structure, its size and the number of pit, and the size of the pit membrane pores have very big difference, so the water move along the path of the ease of discrimination, namely wood tree species are affect the drying speedThe main internal cause.Because of the annular hard hard wood, such as rosewood catheter and fillings in the pit, the pit membrane pore diameter is small, so the drying speed significantly less than loose hole hard wood;In the same tree species, density increases, the big inside capillary water flow resistance increases, the cell walls of water diffusion path within extended, difficult to dry.
2.The thickness of the wood.
Wood conventional drying process can be approximately regarded as material along the thickness direction of one-dimensional heat and mass transfer process, the thickness increase, the heat and mass transferFrom the longer, the resistance increase, drying speed decreases significantly.
3.Lumber moisture content is
Fiber saturation point, as the moisture content reduce, the transverse diffusion coefficient of absorbed water is reduced, and the diffusion coefficient of water vapor in the cell cavity increases, due to the drying process of water vapor diffusion in the cavity of cells proportion is not large, the lower the water moisture diffusion path, the longer so the lower the moisture content of the more difficult it is to dry.
4.The < STROng > wood heart sapwood,
Hardwood heartwood cells inclusions is relatively more, most of the pit conifers heartwood were isolated, so the heartwood is sapwood difficult dry.
5. wood texture direction
Wood ray is advantageous to the moisture conduction, along the wood radial moisture conduction is bigger than along the string to about 15% & ndash;20%, so the string cutting board usually than diameter cutting board drying speed is fast.
Although the internal control,To different situations, but as long as according to the characteristic of lumber rational utilization of drying equipment and technology, and also can improve the drying speed, can not only reduce the unnecessary loss, and keep the wood material under the premise of improving the effect of drying.
From:
Beijing office furniture companyUnder a
The advantage of solid wood furniture,