The raw materials of mahogany furniture are relatively expensive. Experts pointed out that in mahogany drying, the quality of drying and the reduction of losses should be the primary considerations. To achieve these two points, scientifically mastering the drying process is the most important prerequisite. Fresh mahogany wood contains a lot of moisture, and the water will evaporate under certain circumstances. The natural evaporation of moisture will lead to wood dry shrinkage, cracking, bending deformation, mildew and other defects, seriously affecting the quality of wood products, so the timber must be dried before processing mahogany furniture. If it is improperly dried, various problems will arise in subsequent parts processing, assembly and painting, which will affect the quality of the finished product. The correct drying treatment can overcome the above wood defects, increase the mechanical strength of the wood, improve the processing performance of the wood, and extend the service life. It is an important technical measure to rationally use and save wood, and it is an indispensable and important process in wood processing and production. The external factors affecting the drying of wood include the temperature and humidity of the drying medium, the circulation speed of the airflow through the wood surface, and the pressure of the medium; the internal factors are mainly the species, the thickness of the dried wood, and the initial moisture content. In the case where the drying equipment in each part of the drying room can ensure normal working conditions, the wood drying process conditions are the key to ensure the wood drying cycle and the quality of wood drying. The wood drying benchmark is an important basis for guiding the dry production of wood. The wood species of rosewood are relatively single, and after understanding and mastering the dry quality and final moisture content required for dried wood, it is possible to choose the appropriate drying process conditions. The core content is to select the drying reference and determine the heat and moisture treatment conditions according to the species and thickness of the dry wood. In the premise of ensuring the quality of wood drying to increase the drying speed, save energy consumption, reduce drying costs, resulting in the greatest economic benefits. The core content of the wood drying process conditions is the wood drying benchmark. The softness of the drying benchmark basically determines the wood drying cycle and the quality of the wood drying. Therefore, the phenomenon of cracking, deformation and uneven final moisture content of the wood during the drying process belongs to the Wood drying defects caused by wood drying. Cracking is also called dry cracking. It includes end cracking, surface cracking, and internal cracking; deformation includes smooth bending, horizontal bending, curling, and twisting. The use of modern drying technology to study and improve the quality of dry mahogany furniture, and improve the quality of mahogany furniture, is crucial for stabilizing and expanding the market share of mahogany furniture in the international and domestic markets. It is of great significance to carry forward the development of mahogany culture and promote the development of traditional Chinese furniture. Researching and improving the quality of dry wood for mahogany furniture is a basic technical investment necessary for the further development of mahogany furniture companies and a prerequisite for capacity building.
Wafer Soft-sealed Butterfly Valve
The valve has compacted structure, small
flow-resistance with the flow pattern tend to be straight so that no sundries
is kept inside. What`s more, it is light and convenient to install. The valve
can be applied to cut off or regulate the flow of media. The valve can be
actuated by operating lever, handle wheel, electric actuator or pneumatic
actuator.
The disc and the stem are connected without
the structure of pin bolts, which guarantees no inner leakage.
Sealed surface of the disc is spherically
shaped, which promotes the sealing capacity and increases the durability, which
is to say even if opened and closed with pressure more than 50000 times, it
remains no leakage.
Upon requests, the disc can be coated with
Nylon or F46, Excellent anti-corrosion.
The valve body is coated with epoxy resin
without any exposure of iron.
The epoxy resin and rubber used comply with
sanitary standard DVGW
The valve can be used in water supply and
drainage, disposing of polluted water, heat supply, gas, ship industry,
metallurgical industry, energy system and textile and so on, especially
applicable to those occasions that bi-directional sealing and valve body are
easily eroded.
Lug Butterfly Valve,D.I. Lug Butterfly Valve,Ductile Iron Lug Butterfly Valve,Cast Iron Lug Butterfly Valve SUZHOU YUEDA VALVE CO., LTD. , https://www.jsyuedavalve.com
Summary:
Unique Design:
Reliable Sanitation:
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