Air duct processing: In order to prevent substances such as oil fumes and gases from being discharged outdoors, ventilation ducts are usually installed. However, because ventilation ducts are mostly thin-walled and large undulating products, they often exhibit warping and deformation problems during production and use. Do you know the reasons for the warping and deformation of ventilation ducts? Below, let Jinan Chenglu Guangtongfeng, a ventilation duct processing manufacturer in Jinan, take you to learn more.
Magnesium cement undergoes a continuous expansion process in volume under natural curing conditions, with a linear expansion rate of 0.1~0.2% and a volume expansion rate of approximately
During the sintering process of magnesite, partial overburning is inevitable, resulting in a dead burning state of some MgO. The hydration process of overburned MgO is very slow. When MgO in the cement stone that has already formed strength is hydrated with water, it generates Mg (OH) 2, causing volume expansion
During the hydration of free CaO in lightly burned magnesium oxide, the volume expands by 90%, while there is SO42- present in the brine sheet. When Ca (OH) 2 is converted into gypsum, the solid volume will increase by more than twice, causing deformation of the product. This is also the reason why the free CaO content in lightly burned magnesium oxide and the SO42- content in the brine sheet are constrained
The hydration process of MgO-Mg-C12-H2O system is an intense exothermic reaction process, and the volume of the produced pipeline is large. If the ambient temperature is high, it will reflect the heating process. If the temperature of the board body is too high, the response is not sufficient, forming a large crystallization stress and thermal expansion stress, causing the volume of the product to expand.
When arranging the air duct processing equipment inside the building, the load-bearing capacity of the building's floor slabs and beams should be considered, and corresponding methods should be adopted when needed. The manufacturing of air ducts for clean systems should have clean enclosed warehouses for storing products or semi-finished products.
The air duct processing site should reserve transportation channels for on-site data, products, and semi-finished products, and the selection of air duct processing sites should not obstruct fire exits. The detailed drawings and system diagrams have been reviewed and found to meet the requirements, and skills and disclosures have been made.
There should be a place for construction equipment and data storage in the air duct and operation site, and the equipment and power supply should have reliable protective equipment. The route to the workplace should be cleared. We need various instruments and equipment that can meet the fire protection requirements.
The prefabrication of air ducts should have an independent workplace, which should be flat and clean, and the processing path should be leveled. The location of double-sided aluminum foil insulation board air ducts and other composite material air ducts should be monotonous, and there should be a satisfactory place for product stacking.
Thank you for reading. The source of this article is Shandong Ventilation Pipeline Processing. For more information and questions, please click: http://www.jnqsg.com We will continue to work hard to provide you with services. Thank you for your support!