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[maintenance] discussion on stone glue mending technology
Date：2020-09-13 09:40:00
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As we all know, stone materials are inevitably damaged. After gluing, due to the penetration of glue into the interior of the stone, the physical properties of the stone are changed, the gap between the crystal particles inside the stone is healed, the cracks are bonded, and the strength of the stone is obviously improved. At the same time, the surface of the stone after gluing treatment will be more bright and bright after polishing, and it can also be To prevent some loose stone in the process of cutting broken edge phenomenon.
1、 Brief introduction
The implementation of stone glue mending technology solves many natural problems of stone, so stone processing enterprises attach great importance to it. Here we have a topic of exchange. Due to various defects of natural stone, many stones must be repaired before polishing.
2、 The necessity of stone gluing
Due to the influence of natural factors, the surface of stone can show cracks, holes, sand holes, damage, fracture, collapse corner, loose material and other defects after processing. These defects lead to the reduction of the excellent rate of stone materials and the decrease of the surface ornamental value and grade. Therefore, the stone gluing plays an important role in the stone processing technology.
1. Make up and repair the defects of natural stone. For example, the common chicken claw pattern, crack, sand hole, stone pit, loose material and damage are common in granite and marble. The defective stone can be made more perfect, gorgeous and crystal clear after glue filling, so as to obviously improve the grade of stone and increase its value.
2. Prevent stone from pathological changes and contamination. Due to the filling of glue into the small cracks and sand holes, the surface condition of the stone has been greatly improved. The dust and liquid pollutants are not easy to invade the stone surface, which reduces the hiding opportunities of various pollutants, so as to prevent the stone from being polluted and pathological changes.
3. Slow down the fading of stone. On the one hand, the formula of ultraviolet factor is added in the stone strengthening agent, which can prevent the damage of ultraviolet ray to the color of stone; on the other hand, because the repair of stone plate surface prevents the invasion of dust and liquid, it can keep the natural color of stone more lasting. Local treatment of stone, after grinding and polishing, once the local defects are found, local treatment can be carried out by way of glue supplement to restore its natural color.
4. Make the stone have stronger binding force, the compressive strength and impact strength will be greatly enhanced. Because glue is a kind of high polymer material, it has very strong adhesion and cohesion. After gluing, the stone also has this characteristic, and the strength of stone has been greatly improved.
3、 Quality requirements of stone gluing
The quality of the repaired stone plate or other stone products shall meet the quality requirements in the compilation of stone quality standards. The back and side of the glued stone plate should be treated accordingly. The surface of the stone plate treated by glue repair should be smooth and even.
4、 Mechanical rubber patching (flow operation mode) and manual rubber patching (trolley or platform mode)
There are two methods of stone glue patching: mechanical and manual.
1. Mechanical rubber patching (flow operation mode)
The production line is used for stone gluing process with high production efficiency and high automation, which is suitable for large quantities of stone gluing. The mechanical equipment of this operation method is generally composed of turnover machine, conveying line, dryer and control box. The operation process is: cleaning the board surface - drying - adding mesh - glue patching board surface (facing or back) - drying (it can also be twice glue filling + three times drying)
2. Manual glue mending (trolley or platform mode)
Manual gluing is a simple process for stone surface treatment. It can be used to repair a small amount of stone, but it can effectively solve the function of splicing stone. It is necessary for stone processing, especially suitable for repairing special-shaped stone crafts. It is an effective method for local treatment of stone.
Manual glue patching local treatment mainly adopts the methods of "digging", "filling" and "filling". The so-called "dig" is to dig out the stone defects, and then use the stones with similar color and texture to fill in the excavated place, and then glue the stones with the same color. The smaller the gap, the more natural the better.
5、 Operation procedures and steps of stone gluing:
1. Before gluing, the dust and other dirt on the board surface shall be cleaned, and the wet Board shall be dried or dried.
2. The stone to be repaired shall be placed on the bracket or flat plate, and the broken plate shall be cleaned up and dried. The crack or fracture is bonded with the adhesive which is close to the natural color of the stone. When bonding, it is impacted by external force to make the bonding more firm.
3. When the mechanical glue filling method is adopted, it is necessary to decide whether to add a strong mesh according to the material conditions. After adding the mesh, after turning over the plate by the turnover machine, the smooth surface of the stone can be filled with glue.
4. The amount of glue is determined according to the quality of the stone plate, and the adhesive and drying agent are mixed according to a certain proportion, and the two materials are mixed evenly.
5. Brush the prepared adhesive on the board surface or fill in the cracks, and scrape evenly with a blade.
6. Observe whether there is leakage of adhesive in the cracks on the board surface. If the cracks are not filled up by the adhesive, make two or more times of glue filling until the cracks are filled with glue.
7. After the repair of the plate to be placed for a few hours before grinding and polishing.
8. After grinding and polishing, if the color effect of the glue filling area is not good, it is necessary to dig it out and make up the glue again.
9. Stone gluing should be carried out with the help of certain tools and means. A guiding ruler should be used to level one edge to ensure the straightness of the repaired material.
10. The repair of plates can be done horizontally or vertically. The method of vertical placement can make the bonded plate more firm with the help of plate gravity.
6、 The following principles shall be followed in stone gluing:
1. In principle, the gluing marks meet the design requirements and meet the natural texture of the original stone.
2. The color of the glue in the mending part should not lose the original color of the board surface, otherwise the color is too obvious and easy to show the traces of the glue mending.
3. The stone used for rubber repair should not be of regular shape, so that it is not easy to see traces of artificial treatment at the rubber patch.
4. The stone material should be re polished and polished, and there should be no traces and uneven appearance of the repaired stone.
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Beijing Sarlsson New material Co,.Ltd.
Beijing Adress：Daxing Industrial Zone Beijing
Beijing Telephone： 13331021811 / 13331025578
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Bengbu Sarlsson New Material Co,.Ltd.
Anhui Adress：Economic Development Zone Huaiyuan Country Anhui Province
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Anhui Adress：Economic Development Zone Huaiyuan Country Anhui Province
Anhui Telephone： 0552-8698885 / 8698886 / 8698887
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Jiangxi Sarlsson New material Co.,Ltd.
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