The wooden floor is beautifully designed to make it feel very comfortable, and many people will lay wooden floors when the house is renovated. A large part of the quality of the wooden floor is determined by the quality of the construction. If the wooden floor is flawed, it will affect the service life of the wooden floor. Then what should you pay attention to when laying the floor? Let me introduce you to the following article.
What to pay attention to when laying the floor: the floor needs to be leveled when laying the floor
Before we lay the floor, the ground must be leveled. It is not necessary to use the naked eye to observe the ground. It is better to use the professional evaluation method. It should not be sloppy. If the ground is uneven, lay it on the wooden floor. When it occurs, the floor and keel will be suspended. When someone step on it, it will ring.
What to pay attention to when laying the floor: dry treatment before laying the keel
Generally, the moisture content of the keel without drying treatment is relatively high, up to about 25%, and the normal moisture content of the wooden floor should be about 12%. If it is larger than this value, the wooden floor board is easily affected by moisture, resulting in wooden floor. It is prone to deformation, cracking, etc., so we need to dry the keel to increase the service life of the wooden floor.
What to pay attention to when laying the floor: selected paving time and environment
The wooden floor is made of natural wood material, which has certain requirements for the temperature and humidity of the room. Usually, the optimal temperature for laying the floor is between 16 °C and 30 °C, which can reduce the thermal expansion and contraction of the wooden floor. . Therefore, we should avoid noon and evening when laying wooden floors. It is best to lay wooden floors after 2 pm.
What to pay attention to when laying the floor: the paving method is stressful
When the wooden floor is laid, it is necessary to pay attention to certain methods. When installing the wooden floor, it is necessary to reserve a certain gap. In addition to the gap between the floor and the wall, a gap of about 1 mm is required, and a certain gap is required between the floors. It is best to be within 1mm to avoid arch deformation in the future.
What to pay attention to when laying the floor: it is necessary to protect after construction
After the wooden floor is laid, it needs to be covered with paper to prevent the paint or other items from falling on the floor during the decoration, causing damage to the floor. At the same time, within 48 hours after the floor is laid, avoid walking and placing heavy on the floor. Things.
Summary of the article: The above is about the relevant introduction of the floor laying , I hope to give you some help when laying the wooden floor, so that everyone has a good quality of wooden floor construction, if there are other related needs, please pay attention to Qijia News.
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Natural Graphite , as its name implies, is naturally formed by natural Graphite , which is generally found in graphite schist, graphite-gneiss, graphite-bearing schist and metamorphic shale.
Features
The chemical composition of graphite is carbon (C). Naturally produced graphite is rarely pure and often contains impurities, including SiO2, Al2O3, MgO, CaO, P2O5, CuO, V2O5, H2O, S, FeO and H, N, CO2, CH4, NH3, etc. Natural graphite minerals are black, steel gray, striated black; Metallic luster, crypto, dull, opaque; The hardness is isotropic, the vertical cleavage surface is 3 ~ 5, the parallel cleavage surface is 1 ~ 2; Qualitative soft, density is 2.09 ~ 2.23 g/cm3, have the feeling of greasy, easy to contaminate finger. Mineral chip under the transmitted light is generally not transparent, extremely thin can pervious to light, the light green gray, refractive index of 1.93 ~ 2.07, under the reflected light is light gray, reflective pleochroism, Ro gray with brown, Re dark blue gray, reflectivity Ro23 (red), Re5.5 (red), the reflected color, double reflection were significantly, strong heterogeneity, polarization color for straw yellow.
Graphite is a complex six-party double cone, assumes the six-party tabular crystal, common simplex are parallel double, six-party double cone, hexagonal prism, but in good condition with rare crystal forms, the generally show scaly or platy, aggregate density lump, earthy or globular.
Type
The process performance and usage of graphite is mainly depends on the degree of crystallization, in accordance with its natural Graphite Crystal morphology can be divided into crystalline graphite, Flake Graphite ) and aphanitic graphite (earthy graphite) two types of industry.
Crystalline graphite
In the crystalline (scale) graphite ore, the diameter of graphite crystals is greater than 1 mu m. Ore grade is low, but optional; The mineral associated with graphite is usually mica, feldspar, quartz, diopathic stone, diabase, garnet and a small amount of pyrite, calcite, etc., some of which have some useful components, such as rutile and vanadium. The ore is scales, grainy scales or granulocyte structures, flaky, flaky, or blocky structures.
Crystalline (scale) graphite is divided into High Purity Graphite, High Carbon Graphite, Medium Carbon Graphite and low Carbon Graphite according to the fixed carbon content.
The high purity graphite (fixed carbon content is greater than or equal to 99.9%) is mainly used for flexible graphite sealing material, nuclear graphite, instead of platinum crucible for chemical reagent melting and lubricant base material, etc.
High carbon graphite (fixed carbon content 94.0% ~ 99.9%) is mainly used for refractory materials, lubricant substrate, brush raw materials, carbon products, battery raw materials, pencil materials, filling materials and coatings, etc.
Carbon graphite (80% ~ 94% fixed carbon content) is mainly used for crucible, refractories, casting materials, foundry coatings, pencil raw materials, battery materials and dyes, etc.
Low carbon graphite (fixed carbon content 50.0% ~ 80.0%) is mainly used for foundry coatings.
Cryptocrystalline graphite
Cryptocrystalline graphite is also called soil graphite or amorphous graphite. In cryptocrystalline graphite ore, graphite crystals are less than 1 mu m in diameter, which are microcrystalline and can only be seen in the electron microscope. High grade of ore, but poor selectable; The mineral associated with graphite is often quartz and calcite; The ore is microscaly - cryptocrystalline structure, block or soil structure.
Cryptocrystalline graphite ore is mainly distributed in contact metamorphic deposits. Actually the diameter graphite flake graphite ore is uneven, the so-called crystalline graphite ore, may also contain the aphanitic graphite, are too many content is often referred to as the mixed type graphite ore, may also contain a small amount of aphanitic graphite quality mineral crystalline flake graphite piece diameter slightly larger than 1 microns.
Cryptocrystalline graphite ore is mainly used in pencil, battery, electrode, graphite emulsion, graphite bearing ingredients and the raw materials of battery carbon rod. The non-ferrous graphite is mainly used for casting materials, refractory materials, dyes and electrode paste.
Natural Graphite
Natural Graphite,Expanded Graphite,Colloidal Graphite,Special Graphite
Fengcheng Ruixing Carbon Products Co., Ltd , http://www.lnfcrxts.com