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What are the technological processes of solid wood furniture
Jan 04, 2019

 One   Drying

 wet plate or square material by drying kiln or natural drying, the moisture content of the material is controlled within a certain range, that is to say, it is suitable for the annual equilibrium moisture content of wood in the area where the furniture is used. Other materials used in furniture manufacturing, such as laminates, laminates and various wood-based panels, should also be controlled. The national standard is less than 15%, the northern drying can reach 12. All dry in the north, drying up to 12%


(1) what is wood drying?


The wood contains a certain amount of water. The amount of moisture in wood varies with tree species, age, and cutting season. In order to ensure the quality of wood and wood products and prolong the service life, it is necessary to take appropriate measures to reduce the moisture content of wood to a certain extent. In order to reduce the moisture content of wood, it is necessary to raise the temperature of wood, make the moisture in wood evaporate and move outward, and make the moisture leave the wood quickly in the air with a certain flow speed, so as to achieve the purpose of drying. In order to ensure the quality of dried wood, it is also necessary to control the humidity of drying media, such as wet air, which is commonly used at present, in order to obtain fast and high quality The effect of drying wood, called wood drying. The above method is also called convection drying because of the use of convection heat transfer from the external heat drying method of wood.


Generally speaking, wood drying is a process in which water is expelled from wood by evaporation or vaporization.


(2) what is the significance of wood drying?


Wood has low density and high strength (high quality coefficient), good resistance to acid and alkali corrosion, good insulation, easy cutting, beautiful texture and color and so on. In construction, machinery, vehicles, ships, textiles, farm tools, furniture, musical instruments, aviation and other parts of the national economy needs a lot of wood. However, products made from undried wood do not guarantee quality, so wood must be dried.


(1) After the wood is dried, the stability of wood and wood products can be improved. The phenomenon of moisture expansion and dry shrinkage will occur when wood is exposed to air for a long time, but the uneven expansion and shrinkage of wood will often lead to wood cracking and deformation, which will affect the use of wood and lead to waste. When making products (such as doors, windows, floors, furniture, etc.) with wet wood or without dry wood, it seems to be good at the first time, but after a period of time, as the wood becomes dry, the door frames are skewed and the floor warps. Loose joint tenon or plate cracking and other phenomena, resulting in a lot of losses. If the production unit before the use of wood drying to use The required moisture content, can ensure the stability of wood products structure, make its appearance beautiful, durable. After drying wood, the quality of wood products can be guaranteed, the use performance of wood can be improved, the service life of wood can be prolonged, and the wood can be saved. Years of practice have proved that wood drying is an indispensable process in production and has become a special subject in science.


(2) increase the strength of wood and wood parts. When the moisture content of wood is lower than fiber and saturation point, the strength of wood will increase with the decrease of wood moisture content. After drying the wood, the cutting conditions can be improved, the strength of wood structure parts, the adhesive strength and the surface decoration quality of wood products can be improved. The thermal conductivity and electrical conductivity of wood change with the change of moisture content. In order to improve the thermal insulation and insulation of wood, it is necessary to reduce the thermal conductivity and electrical conductivity by reducing moisture content.


(3) to prevent the degradation and decay of wood. If wet wood is stored in open air for a long time, decay or pest will occur if appropriate measures are not taken. When the moisture content of wood was reduced to less than 20%, the damage and damage of fungi and pests could be greatly reduced. Therefore, generally in the production unit, the wood drying to moisture content of about 8-15%. This not only ensures the inherent properties and strength of wood, but also improves the corrosion resistance of wood.


 Two ingredients


(1) Reasonable selection: according to product quality requirements and characteristics to select tree species, texture, color and so on. All parts of upscale furniture are made of the same type as much as possible


Tree species to mix, such as the selection of precious tree species furniture costs will be very high. Take into account the strength of the supporting parts of the furniture.


The same is true of furniture.


(2)  reasonable determination of processing allowance and moisture content: moisture content should be uniform inside and outside, no internal stress, to prevent warpage in the process of processing and use, open


Cracks and other phenomena; according to the equipment and the number of processing procedures reasonable to set aside processing allowance.


(3)  reasonable selection of blending methods: generally, the principle of multiple wool should be followed, that is, the length, width and thickness of wool and clean material can all be multiple relations.


Three Wool processing: sawwood into the shape of the accurate size of the parts, for the clean material processing to provide accurate positioning criteria.


Four Gluing processing: the main fingerboard square gluing, hollow plate manufacturing, veneer and so on.



Five bending processing: mainly refers to solid wood bending, veneer gluing bending, saw mouth bending and so on.


Six clean material processing: mainly refers to tenon, drilling, grooving, car shape, copying, routing, mortise, polishing and so on.


Seven-component assembly: parts through tenon structure, tenon connections, adhesives, nails, wood screws and metal connectors to assemble into parts.


Eight parts processing: mainly refers to the assembly of parts processing, such as door re-correction, sanding.


General assembly and finishing: connecting parts and parts in a certain way and repainting.


For example: the production process of wooden drawing tables for students includes the following processes


1. Ingredients: the following machines are commonly used for batching: cutting bed, pressing plane, cutting saw, flat plane, milling machine, splicing machine, band saw, four side planing etc.


2. White embryo processing: a process in which all parts of a product are processed from wool to the dimensions and shapes required for drawing. The key processing procedure is drilling, milling, angle cutting, and carving parts. The machining accuracy must be guaranteed, so that the assembly accuracy of assembly process is within the allowable error range.


3, assembly: in order to ensure the accuracy of the assembly and operational proficiency, each assembly line should be reasonable arrangement, the basic process is to install the frame and then the details, and then to repair the unreasonable place.


4. Coating: coating is an important link in the surface manufacturing process of construction machinery products. Anti-rust, anti-corrosion coating quality is one of the important aspects of total product quality. Product appearance quality not only reflects product protection and decoration performance, but also constitutes an important factor of product value.


5. Packaging: the products from the paint line down the overall packaging, pay attention to protect the corner.


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