For friends who want to buy solid wood furniture, rosewood is a good choice, rosewood can make all kinds of furniture, such as sofas, wardrobes, etc., then everyone knows the characteristics of rosewood? Then let's explore what the characteristics of rosewood are . Characteristics of rosewood aroma Sea yellow wood itself is a traditional Chinese medicine. It has a "fragrance" taste, which is rich in flavor and quiet and elegant; while the yellower flavor is lighter and slightly smelly after smelling. In addition, the sea scent emits a long scent, and the bracelet will smell the scent after playing for a week, and the yellower will not smell. Color The sea yellow color is diverse, except for the main color is golden yellow, there are purple, brown, red, black, and any combination between them; the yellower is mostly yellow, and is shallow. In general, the color of sea yellow is slightly more stable than the yellower color, the overall color is dark red, while the overall color of Vietnamese yellow pear is yellowish orange. Texture The sea yellow texture is fine, the ink line is black and clear, and it is mostly crab claw-shaped and beautiful, and the cow hair texture. Although it is irregular, it is not messy. The feeling of flowing water gives a flowing beauty. The yellower is relatively rougher, the ink line is darker, and the landscape is more common. Feel The surface of sea yellow is fine, smooth and moist, like jade, while Vietnamese yellow pear is rougher. This phenomenon is mainly due to the extremely high density of sea yellow, extremely fine textured cell tissue and very dense material structure. Another important reason is the proportion of sea yellow oil (scented oil). According to relevant tests, the highest oil content of sea wood reached 27%, while that of yellow wood was only 0.5%. Rosewood characteristics - the growth habit of rosewood Temperature precipitation The annual temperature is high in the distribution area, the annual average temperature is 23-25 ​​°C, the extreme minimum temperature is 6.6 °C, the rainfall distribution is extremely uneven, and the precipitation in the dry season (November to April next year) is about 1500 mm, and there is heavy rain. Soil requirements The soil is brown brick red soil and red soil. Topography This species is not strict with the requirements of the site, and it can be suitable for steep slopes, ridges, bare rocks, and arid and thin land. In the positive tree species, the saplings are weak in the densely shaded forests; they can grow into straight trunk trees in the forests with less canopy closure. Although it is rich in fruit, it is in the dry season when it is naturally planted, so there are not many young trees under the forest. The characteristics of rosewood are introduced here first. For more information, please pay attention to GO Jiaju. Source: GO Jiaju related articles How about the price of Hedgehog rosewood furniture? Novice must see Experts comment on the advantages and disadvantages of walnut furniture, a lot of dry goods can not be missed Ming and Qing dynasty lobular rosewood furniture atlas, Tibetan friends must see must not miss Experts reveal the maintenance method of lobular rosewood furniture, don't worry about maintenance! What are the identification methods of lobular rosewood?
The full ceramic ball bearings listed below are supplied with rings and balls made from zirconium dioxide (ZrO2). These zirconia bearings are available as full complement (no cage) or with cages made from PTFE, PEEK or 316 stainless steel.
These are non magnetic, non-conductive and highly corrosion resistant to most chemicals although ZrO2 bearings are not recommended for prolonged contact with steam. Full complement bearings or those with a 316 stainless cage can be used up to 400°C while bearings with a PEEK or PTFE cage can cope with temperatures of up to 250°C. For temperatures below -70°C, PTFE or 316 stainless steel cages are preferred. Standard radial clearance for full ceramic bearings is C0 but other clearances can be supplied to order.
ZrO2 ceramic bearings are generally used for their extreme temperature capabilities, excellent corrosion resistance or non-magnetic properties. Other sizes can be supplied on request.
The Description of Ceramic Bearings: Cermic Ball Bearing,Full Ceramic Bearing,Hybrid Ceramic Bearing,Self-Aligning Full Ceramic Ball Bearing Shijiazhuang Longshu Mechanical & Electrical Equipment Trading Co., Ltd. , https://www.longsbearing.com
Compared to steel, Ceramic ball Bearings have many specific advantages. They offer superior corrosion and heat resistance, higher dimensional stability, and lower density, which facilitate high speed. Ceramics are superior to steel in heat and corrosion resistance, and are lightweight and extremely hard as well. Consequently, ceramic rolling bearings can be used in environments where conventional steel bearings cannot. That is to say, the superiority of these bearings makes it possible that they can be applied in some special environments.
Firstly, they can be used in corrosive environments. Compared to stainless steel bearings, hybrid and all Ceramic Bearing lasted three and twenty times longer respectively. It is presumed that water readily adheres to silicon nitride and forms a better lubrication film, leading to extended bearing life.
Secondly, they can be performed in corrosive agents. Generally, silicon nitride has excellent corrosion resistance. However, corrosion resistance varies depending on the type and quantity of sintering additives, and certain corrosive agents decrease in hardness and flexural strength. In such situation, it is can be proved that the carbide-based ceramic bearings are the most effective.
Thirdly, they can be used in high-temperature vacuum. An all-silicon nitride Ball Bearing with a self-lubricating laminated cage (mainly composed of MoS2) and with MoS2-coated rings and balls proved superior in durability in a high-temperature vacuum environment. Compared with the hybrid bearings, the all-ceramic bearing was superior in both dynamic frictional torque and life.
Fourthly, they can be performed with poor lubrication. As ceramics are extremely hard and have outstanding wear resistance, they outperform other materials in bearing life without lubrication. According to a test, the steel bearing seized within a short period while the hybrid and all 627 Ceramic Bearings, though sustaining wear, did not. And the all-ceramic bearing sustained considerably less wear than the hybrid bearing, indicating that its endurance life is much longer.