First, according to the need to choose the material type of wooden doors to buy
According to the material, wood doors are generally divided into solid wood doors, solid wood composite doors, molded doors and ordinary plywood doors. When purchasing, first consider the needs of homes. The best choice for outdoor doors is solid wood doors or solid wood composite doors, and the interior doors The choice should not be too sloppy.
Solid wood door: The solid wood door is made of natural wood drawn from the forest and made of door cores. After being dried, it is processed scientifically by blanking, planing, slitting, drilling, high-speed milling and other processes. Most solid wood doors are selected for valuable wood, such as cherry wood, walnut wood, teak wood, etc. The finished product door has the characteristics of no deformation, corrosion resistance, no cracks, and heat insulation. At the same time, solid wood doors have effectively played a role in sound insulation due to their good sound absorption.
Solid wood composite door: The core of the solid wood composite door is mostly made of pine, fir or imported filling materials, and is laminated with a density board and solid wood veneer, and is made by high temperature hot pressing and sealed with solid wood lines. Renovation of the first network to remind the owners of the general high-level solid wood composite doors, the door core mostly high quality shirt wood, the surface is solid wood veneer. Due to the low density and light weight of the wood, and the relatively easy control of the moisture content, the weight of the finished door is light, and it is not easy to deform or crack. In addition, the solid wood composite door also has the characteristics of heat preservation, impact resistance, and flame retardant, and the sound insulation effect is basically the same as that of a solid wood door.
Molded wooden doors: molded doors are more affordable and safer than solid wood doors, and are favored by middle-income families. The molded wood door is mechanically repressed by two high density fiber molded door skins with modeling and simulated wood grain. Renovation of the first network reminded the owners of molded wood doors with wood veneer and brush "clear veneer" veneer board, to maintain the decorative effect of natural wood texture, but also can be panel parquet, both beautiful and lively and economical and practical. Molded door also has the characteristics of moisture-proof, small expansion coefficient and anti-deformation. After a period of use, there will be no surface cracking and oxidative discoloration.
Plywood door: The middle is a light frame, two sides are attached to plywood, fiberboard, molded plate and other thin plate door, usually an interior door. The doors were framed with wood and then nailed with plywood on both sides of the frame. Renovation of the first network to remind the owners plywood have pole wood, poplar, eucalyptus, Ash, teak, oak, etc., thickness of about 4-6 mm. The plywood door is simple and smooth, meeting the requirements of cleanliness and hygiene. However, depending on the quality of the glue, the plywood is often exposed to moisture and degumming. The sun is prone to cracking and should not be used outside doors.
From the material point of view, the quality of solid wood doors is the best, followed by composite solid wood doors. Both doors are suitable for use as outdoor doors, while molded wood doors and plywood doors are more suitable for interior doors, especially splint doors. It is used as an outdoor door and should be avoided where it is exposed to direct sunlight.
Second, according to the quality of selection of wooden door quality discrimination
The quality of wooden doors has a great impact on the future of home safety and quality of life. If you judge the quality of your products, there are some practical tips for purchasing them.
Look at the appearance: There are several places that need to be carefully checked when buying wooden doors, including colors, details, textures, etc. Renovation of the first network to remind the owners of better quality wooden doors selected paint is better, the color of the door panel looks more uniform, natural; door panel material is better, then feel fine, smooth, the overall feeling of uniform, beautiful; workmanship qualified door The door leaf and the door sleeve are symmetric, non-deformed, and correctly fitted.
Look at the quality inspection: When you buy a wooden door, you must first check whether the wooden door has a national quality certification. In particular, the high-grade wooden doors, in addition to the quality certificate, are accompanied by detailed descriptions of materials, structure, quality and performance.
Wooden doors that comply with national environmental regulations must be accompanied by China Environmental Labeling Product Certification. Environmental protection doors must carry the green call sign of China's environmental label. When purchasing, you must recognize the two logos and avoid buying substandard products that are out of specification.
Smell smell: Through the taste smell can be initially identified whether the wooden door meets environmental requirements. First open the closed door, or smell the smell of the wooden door in close quarters. If there is irritating odor, or even dry eyes, tears, or sneezing, it means that the formaldehyde emission of the wooden door is higher and should be carefully chosen.
Look at the material: common wooden door materials in the market include walnut, ash, Sapele, white oak, rosewood, teak and so on. When buying, it is necessary to distinguish between colors, textures, textures, etc. according to different materials so as to avoid shoddy businesses.
Third, according to the choice of color style to buy
In addition to paying attention to material and environmental performance, wood doors need to be selected according to the actual conditions of the home. Different spaces and different styles of decoration have matching skills.
According to the color selection of the door: In the home decoration, there are generally the main colors. When choosing the door, choose the color of the wooden door that matches the main color of the home. Such as the main white color home, you can choose black walnut doors, black and white with each other.
According to the style of the election: general home decoration styles include: Chinese, European, simple, mix and match, classical and so on. If the European-style decoration of the home, wooden doors, the best choice for European style or teach close to the simple style, such as the European entrance mirror corresponding to the carved wooden doors. This collocation has even more demonstrated the beauty and unity of the home.
According to the space selection of the door: the general living room and bedroom doors will choose the higher security, the overall thick solid solid wood door, most of the use of fan-type, flat open the door. The kitchen and bathroom can be either push-pull or foldable. In the storage room, it is possible to select a louvered door with good air permeability.
According to the environment, choose the door: Choose the door that suits your home according to the home environment. Such as the kitchen door to be selected waterproof, good sealing, so as to cook a cooking fumes. Bathroom doors pay attention to privacy and waterproofness. Bedroom doors require soundproof doors.
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Metallographic Cutting Machines
Cutting is the first step of material analysis. The selection of cutting machine and cutting wheel must comply with the geometric size and material characteristics of the sample. The perfect metallographic cutting should avoid microstructure thermal damage and deformation, and preserve the necessary accuracy and efficiency.Hardness and ductility are the two main parameters for selecting the cutting wheel. The best choice of the cutting wheel depends on the size, hardness and ductility of the material and the equipment used. Trojan's cutting products speak with facts and the cutting process is simple, fast and accurate.
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