Ground earth anchors can be divided into anchor piles, anchor points, anchor ingots, and drag pits. In lifting operations, ground anchors are commonly used to fix drag ropes, cable wind ropes, hoists, guide pulleys, etc., ground anchors are generally prefabricated with steel wire ropes, steel pipes, and reinforced concrete Buried pieces, logs, etc. are made by burying them in the ground.
1. The ground Earth anchors used for hoisting should be made strictly according to the design, and concealed engineering records should be kept, and overloading is not allowed when using;
In recent years, there has been an increase in the use of mirror photochromic ink printing products, such as communicator buttons, electronic product panels, and plastic signs, etc., which are popular among users and increase the value and selling point for silk screened goods, but compared with ordinary printing inks. In comparison, this type of specular color-change color ink requires a high degree of printing techniques and techniques. Based on the characteristics of the mirror ink, printing method, storage, and precautions, it is briefly described as follows. It is hoped that it will be helpful for the use of mirror-type inks:
1. Kind of mirror ink
General mirror inks (silver and metallic colors) and mirror photochromic inks. Conventional mirror inks are currently used in a wide range, such as IMD technology used in mobile phone buttons, washing machine operation panel, microwave function indicator panel and signage, and decorative parts on electronic products; while the use of mirror light color ink is decorated Sex is more even than the ordinary mirror ink on a grade, make the product beautify.
2. The substrates used in the surface inks are mainly transparent sheets and are printed on the reverse side (back side).
The transparent sheets used are PC (polycarbonate), PMMA (acrylic or plexiglass), hard PVC (polyvinyl chloride) and treated PET (polyester). The mirror ink has adhesiveness to the above-mentioned transparent sheet, and the mirror surface and mirror surface color change effect can be obtained. However, it is worth noting that because PC or PMMA finished products, due to their different materials and processing techniques, some will not be able to obtain a good mirror or mirror change due to poor solvent resistance, so must be done before use Test, confirmed before production.
Not only that, in order to get a mirror effect, in addition to the above, because the mirror ink is a special aluminum powder pigment and a small amount of resin and other basic materials, and the aluminum powder pigment is a sheet, in the surface parallel to the mirror reflection performance Therefore, materials with poor surface smoothness (substrates) and materials that cannot withstand the solvents in ink are not able to obtain a good mirror effect.
3. Screen printing ink properties:
(1) In addition to a small amount of resin and flake aluminum powder pigments, the solvent accounts for more in the mirror ink, so the viscosity of the mirror ink is very low. When screen printing, as much as possible, do not use tilt-opening screen, otherwise the flow is more severe. Therefore, regardless of manual or machine printing, parallel-elevation screens should be used to make inks that are as thin as water fill the screens at all times, so as to avoid or reduce the impact of screen-cutting on screen printing.
(2) If the screen printing machine is used for printing, the metal re-inking scraper should be replaced with a rubber-made re-inking scraper to make the ink evenly coated on the screen.
(3) When the mirror ink is screen printed, the extent of coating on the web should be controlled as close as possible to the range of the printing area of ​​the effective graphics. Otherwise, due to the large coating area, the solvent in the mirror ink quickly volatilizes to cause blocking, and cannot be continuous. Printing and so on.
(4) The mirror-like ink is quickly volatilized on the Internet. To prevent blocking of the screen, be sure to print continuously while printing, and care must be taken not to allow the flowing air to dry the screen.
(5) Thickness of the ink film is too thick, the aluminum pigment in the ink peels. Therefore, it is recommended that the ink be printed as thin as possible. Note that the mirror ink cannot be overlaid.
(6) Mirror type ink itself does not have good shielding performance. In order to get a good mirror surface and its mirror color change effect, a layer of covering ink must be added. This type of printing ink should be coated with a mirror and a color-changing mirror ink. Solvent-free inks are not produced. Mirror ink is a high-grade, decorative ink, thin as water, silk screen printing and highly volatile, if the printing environment is not good, printing technology is not in place, so in the printing will appear blocking network and increase the number of network, but also Ink-printing caused by the phenomenon of non-uniform substrate. At present, units that use mirror-like inks have improved the printing conditions of the inks and mastered the screen printing techniques. Both have been mass-produced. The original intention of this author's writing is to hope to give the reader some help and to get more communication.
2. The ground anchor pit should be dug into a right-angled trapezoid shape, and the angle between the slope and the vertical should be 150 degrees. The anchor depth is determined according to the comprehensive situation of the site;
3. The angle between the drag rope and the horizontal plane is generally less than 30 degrees. The exit point of the ground anchor foundation pit (that is, the place where the wire rope passes through the soil layer and exposes the ground) is 2.5 times the depth of the front pit and within 2 meters on both sides of the foundation pit. No trenches, cables, underground pipelines and other structures, as well as temporary trenching, etc.;
4. No water should accumulate around the ground anchor;
5. Ground anchors are not allowed to be installed in the forward direction along the embedded parts
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