Corundum wear-resistant plastic is a wear-resistant material widely used in the industrial field. Although its construction process seems simple, it contains many details and skills.
PART 01Corundum wear-resistant and plastic
Corundum wear-resistant plastic is a high-grade refractory material. It is made of high-quality refractory raw materials such as brown corundum and silicon carbide, combined with special binders and additives, and is formulated in precise proportions. This material has the characteristics of air-hardening amorphous shape, which is very suitable for use in parts of thermal kilns that are prone to wear. In industries such as circulating fluidized bed boilers, various heating furnaces, and cement building materials, corundum can often be seen in wear-resistant and plastic parts of high-temperature dust kilns.
It is worth mentioning that the construction method of corundum wear-resistant plastic is significantly different from other amorphous refractory materials. Compared with refractory castables, the construction of corundum wear-resistant plastic is simpler and does not require complicated mold setting and baking processes. This advantage not only simplifies the construction steps, but also shortens the construction cycle to a great extent and improves project efficiency. Therefore, corundum wear-resistant plastics have been widely used and highly recognized in the industry.
PART 02 The specific construction methods of corundum wear-resistant plastic are as follows:
The construction method of corundum wear-resistant plastic is very critical. It is related to the quality of the project and the performance of the material.
First of all, preparation work before construction is essential. Before traditional corundum wear-resistant plastics arrive at the construction site, they usually need to be trapped to ensure the stability of the material properties. However, in recent years, with the advancement of technology, some new plastic products no longer require this step, which undoubtedly simplifies the construction process. However, special care must be taken in the storage of materials. Corundum wear-resistant plastics are strictly prohibited from being stacked in the open. Rain and moisture must be avoided, because wet or rain-exposed materials will seriously affect the construction quality and may even lead to project failure.
Secondly, regarding the choice of construction methods, corundum wear-resistant plastics mainly have two construction methods: pounding and smearing. According to the actual situation and construction requirements, the most suitable method can be selected. But in practice, the ramming method is more widely used because it can better ensure the compactness and uniformity of the material.
Furthermore, the preparation of construction tools is also crucial. In order to ensure that the corundum wear-resistant plastic can be mixed evenly and achieve the best construction effect, it is recommended to use a forced mixer for material mixing. In addition, a tamping machine is required to enhance the compactness of the material, measuring buckets and scales are used to accurately control the proportion of materials, and trimmers and wire brushes are used for surface treatment and cleaning after construction.
Finally, if the construction body needs to enhance the structural stability or improve the adhesion of the wear-resistant layer, pre-treatment work such as welding grab nails, supporting anchor bricks, or welding tortoise shell mesh may be required before construction. These preparations can ensure that the performance and service life of corundum wear-resistant plastics after construction can meet expectations.
PART 03 Corundum wear-resistant plastic mixing and mixing
The mixing and mixing of corundum wear-resistant plastics are important links in the construction process and are crucial to ensuring material performance and construction quality.
First, let’s talk about the harmonization part. Since corundum wear-resistant plastic, binding agent and coagulant are packaged separately, when mixing, the proportion needs to be adjusted strictly according to the seasonal temperature. This is because changes in temperature directly affect the setting time and strength development of the material. To ensure the stability of construction quality, the temperature at the construction site should be controlled between 5°C and 25°C. At the same time, according to the power of the mixer, we need to adjust the mixing amount in proportion, and have a dedicated person responsible for the supervision of the material proportioning, measurement and mixing process. The rigor of this step has a decisive impact on the quality of subsequent construction.
Next is the mixing stage. Before carrying out mixing operations, the inside of the mixer must be thoroughly cleaned to prevent debris from being mixed into the construction body and causing quality problems such as cavities. During the mixing process, the wear-resistant and plastic matrix material should be dry-mixed for about 2 minutes to ensure that the materials are evenly mixed. Then, slowly add the binding agent and continue stirring for 5 minutes to fully integrate the binding agent with the base material. Finally, add the coagulant and stir for 1 to 2 minutes to complete the entire stirring process.
In addition, it should be noted that the mixed wear-resistant plastic must be used within 40 minutes. This is because the material will gradually solidify over time, affecting the quality of construction. Therefore, construction workers need to arrange their time reasonably to ensure that construction tasks are completed within the effective use period of the materials.
PART 04 Technical requirements for corundum wear-resistant plastic construction
Regarding the technical requirements for corundum wear-resistant and plastic construction, we need to be particularly rigorous and precise.
First of all, the parts to be constructed should be thoroughly cleaned and treated before construction. Asphalt paint must be applied to protect the surface and keep it free of dirt, dust and other debris. This step is critical as any impurities may affect the adhesion of the material and the overall performance of the construction. After the asphalt paint is completely dry, filling and tamping operations can be carried out. At the same time, the parts after construction must be strictly waterproof to avoid moisture damage to the construction body.
Secondly, the tamping process needs to ensure that it is dense and smooth. Construction workers should use professional tamping tools to ensure that each layer of material is tightly combined to avoid gaps or bubbles. If any raised parts are found, use a trimming knife to smooth them in time, and use a ruler to accurately check the flatness. This is a key step to ensure uniform stress and stable performance of the construction body.
In addition, if the construction thickness does not meet the design requirements, strict measures must be taken to deal with it. At least one-third of the construction body should be shoveled away and then filled and pounded again. The purpose of this step is to prevent delamination of the construction body and ensure the stability and durability of the overall structure.
Finally, expansion joints must be left in strict accordance with construction requirements, construction thickness must be controlled, vent holes must be tied, and surface treatment must be performed. These follow-up tasks are critical to ensuring the long-term performance and safety of the construction body. The setting of expansion joints can prevent thermal expansion and contraction caused by temperature changes from causing damage to the construction body; reasonable construction thickness and exhaust hole settings help ensure the stability and heat dissipation performance of the construction body; and surface treatment can further Improve the wear resistance and corrosion resistance of the construction body.
PART 05 Corundum is wear-resistant and can be cured by plastic
Regarding the maintenance of corundum wear-resistant plastic, we need to pay special attention and fine operations. This is a key link to ensure stable performance of the construction body and extend its service life.
After the construction is completed, the construction body needs to be naturally cured in a dry environment, usually for 5 to 7 days. During this period, the most appropriate temperature control is between 15 and 35 degrees Celsius. This temperature range helps the chemical reaction in the material to fully proceed and promotes the solidification and stability of the construction body.
During the maintenance process, the construction body must be strictly protected from any form of vibration. This is because vibration may have adverse effects on the internal structure of the material, such as micro-cracks or uneven material distribution, which in turn affects the overall performance and durability of the construction body.
In order to ensure the maintenance effect, we recommend taking the following measures: first, provide a stable, dry, and temperature-friendly environment for the construction body; second, regularly check the ambient temperature and humidity to ensure that they are within the recommended range; finally, conduct regular inspections on the construction body Check to make sure it has not been damaged in any way during curing.
PART 06 Corundum is wear-resistant and can be treated with plastic cracks
Regarding the crack treatment of wear-resistant and plastic corundum, we must adopt a rigorous and professional approach. The existence of cracks will seriously affect the overall performance and durability of the material, so timely repair measures are crucial.
During the maintenance period, if cracks with a width greater than 1mm are found in the construction body, we must deal with it immediately. For cracks with a width between 1 and 3mm, it is recommended to use the technical method of "filling the cracks in place". The key to this method is to first spray a special adhesive on the crack to fully moisten it and soften the edges of the crack. This is followed by gentle tapping with a rubber mallet to encourage the cracks to close and restore the integrity of the material.
When facing larger cracks with a width exceeding 3mm, the treatment strategy needs to be more refined. First, we need to expand the crack into a wedge-shaped opening that is larger on the inside and smaller on the outside. This is intended to provide a more stable foundation for repair. Next, spray adhesive again to moisten and soften the crack and surrounding material. Finally, use corundum wear-resistant plastic to carefully fill the wedge-shaped opening to ensure that the filling material is tightly combined with the raw material, thereby restoring the overall strength and wear resistance of the construction body.
During the entire treatment process, the selection of adhesives and filling materials is also crucial. They must have good compatibility and bonding strength with the raw materials to ensure that the repaired construction body can operate stably for a long time.
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