Floor installation decoration construction knowledge decoration step paint Flat Field Holographic Concave Grating
The Concave Grating has the advantage of being able to constitute a spectroscopic system without any assistance from concave mirrors or similar types of image-forming elements. For this reason,the Concave Grating is used in a wide range of applications, such as analytical instruments,optical communications,biotechnology,and medical instruments. Spectroscopes incorporating concave gratings are classified roughly into two groups: polychromators or monochromators.
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Holographic gratings: Flat Field Holographic Concave Grating,Flat Field Concave Grating,Spherical Holographic Grating,Aberration Corrected Holographic Grating China Star Optics Technology Co.,Ltd. , https://www.realpoooptics.com
Related Links: The quality problems of flooring are mostly caused by the skirting line. For example, the keel laying method is more common. There are mainly the following:
The ground is not flattened. The unevenness of the floor will cause some floorboards and keels to hang. When the pedal is stolen, it will sound.
Wooden keel without moisture-proof treatment Solid wood floor keel paving Precautions Nowadays, non-dried keels are usually constructed from sawn pine wood boards, which are fixed on the ground about 30 days in advance, and no moisture-proof layer is laid between the ground and the keel. When paving the floor, it is laid directly without checking the moisture content of the keel. In fact, the moisture content of the keel is usually about 25% at this time, and the qualified moisture content of the wooden floor is generally about 12%. The humidity difference is too large to cause the wooden floor to rapidly absorb moisture, causing the floor to arch and accompanied by the paint bursting phenomenon.
The fixing method of wood keel and iron nails used in the construction of wooden keel nails will cause the nail grip force to be insufficient due to the small contact surface between the wood wedge and the iron nails, which can easily cause the looseness of the wooden keel, and when stepping on the floor, There is a noise.
Assembled too loose or tight wood floor expansion, shrinkage is changing with the changes in the ambient temperature and humidity. Therefore, in the development of wooden floor pavement program, according to the use of the location of the ambient temperature and humidity level to arrange the tightness of the wood floor assembly. If it is too loose, there will be a large gap in the floor contraction. When it is too tight, the floor will arch when it expands.
In the cross-construction work of the renovation project, wood flooring is laid first, and then other construction projects are performed on the floor surface. This is the usual practice of the current decoration team. In this way, after the floor is finished, it often takes a month or more to paint. During this period, there are no isolation measures for water vapor and chemicals on the floor and surrounding environment, which may cause the wooden floor to be deformed and cracked due to the rapid change in moisture content.
China star optics can provide customers with a variety of replicated grating products such as diffraction gratings, reflective gratings,holographic gratings,concave gratings etc. to meet different needs. Maximum ruled area is up to 300x300mm2 for plane ruled diffraction gratings. For replicated diffraction and transmission gratings the ruling density can be from 20 grooves per millimeter to 2400 grooves per millimeter, wavelength from 0.2 micron to 25 microns.
Specifications:
Ruled area: <=70 * 70mm
Wavelength range: 0.2-0.8um
Grooves per mm: 1,200 to 3,600L/mm
Diffraction: >70%
Ruled gratings:
Specifications:
Ruled area: <=70 * 70mm
Wavelength range: 0.2-15um
Grooves per mm: 50 to 2,400L/mm
Diffraction: >70%
Concave gratings:
Specifications:
Ruled area: <=70 * 70mm
Wavelength range: 200 to 900um
Grooves per mm: 490 to 1,200L/mm
Diffraction: >70%
Eighty-five percent of all problems that occur in actual use of solid wood flooring are caused by improper laying, 10% due to improper use, and only 5% due to the floor's own production and processing problems. It can be seen that whether the paving process is reasonable or not is the most important factor influencing the floor use effect. So, what are the wrong ways to avoid laying floors?