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How to clean the old aluminum formwork

Time: September 7, 2019 13:03 source: unknown author: admin

Building aluminum formwork has been widely used in construction projects because of its light weight, high recovery rate, high recycling rate and simple operation, which can greatly shorten the construction period. When it comes to the recycling of aluminum formwork, it is not to remove the aluminum formwork from the previous construction site and directly pull it to the next site. In fact, the old aluminum formwork must be cleaned before it can be used.

1、 Classification. The standard components are divided into wall standard components and floor standard components regularly, and the number of each component is counted.
2、 Dust removal. For the formwork transported back to the factory by classification, the concrete, mortar and other large debris on the formwork surface shall be removed in time.
3、 Cleaning. The formwork after ash cleaning shall be cleaned to ensure that no foreign matters are attached to the surface of the formwork, especially the concrete contact surface, formwork edge rib and other parts, so as to ensure the follow-up quality inspection.
4、 Repair welding. After the cleaning of the template, it is necessary to focus on the inspection of welding quality and hole position, and repair welding.
5、 Calibration grinding. For the deformed old formwork and the template after repair welding, it is necessary to correct, polish, brush and level.
After these simple processes, the quality of concrete pouring with aluminum formwork is similar to that of using new formwork, and the cost is greatly reduced, which is the general trend of low-carbon buildings. In these processes, it is important to clean the ash and clean the concrete on the aluminum formwork. Its effect directly affects the service life of the aluminum formwork and the subsequent process, and then affects the quality of the project.
Traditional methods for cleaning concrete on aluminum formwork are acid pickling or shot blasting. Acid pickling is not in line with the environmental protection policy, leading to secondary pollution; second, it will react with aluminum violently, which is easy to cause hydrogen embrittlement and affect the service life of formwork. Using shot blasting technology, the surface of aluminum template will be greatly worn, which is not conducive to the recycling of aluminum template. At present, high pressure washing is a good cleaning method.
There are two methods of high-pressure cleaning, one is hand-held high-pressure water gun cleaning, the other is high-pressure cleaning automatic cleaning line.
   1、 It's a hand-held high-pressure water gun for cleaning
The hand-held high-pressure gun cleaning equipment does not need a fixed position and is not limited by the space position. The driving form is motor and diesel oil. It can be used to clean aluminum formwork of various sizes and sizes. The cleaning speed is fast and the effect is good, and the aluminum mold will not be damaged. The configured high-pressure gun has small force, and the equipment is easy to operate and durable.
   2、 It is a high pressure automatic cleaning line
  Automatic high-pressure cleaning line is suitable for aluminum template manufacturers or need a certain space to fix the site. It can be customized according to customer needs. It is fully automatic and intelligent. It only needs to transport the template to the cleaning room through the conveyor. After cleaning, the aluminum template is transported to the fixed place through the set route. The cleaning speed is adjustable. The bending plate and straight plate can be cleaned all around the template Washing efficiency is higher, the cleaning water can be recycled, PLC intelligent operation is more energy-saving and consumption reducing, labor saving, improving economic benefits!
  With the increasing support and promotion of the government to the construction project enterprises using aluminum formwork, and the characteristics of aluminum formwork, such as light weight, high strength, convenient operation, high turnover utilization rate and high recycling price, the application of aluminum formwork in construction projects is growing at a high speed of more than 10% every year. The cleaning workers of aluminum formwork before entering the next construction site It is also the general trend to replace the traditional cleaning method with high-pressure cleaning machine with energy-saving, high-efficiency and environmental protection.