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Requirements for Air Tightness of the Cleanroom Door in the Operating Room

Requirements for Air Tightness of the Cleanroom Door in the Operating Room

Airtightness is very important for the performance indicators of the cleanroom door in the operating room and is one of its quality metrics. Its airtightness strength is closely related to the material and production process suitable for production. In terms of shape, it is necessary to follow the principle of combining beautiful shapes, strong durability, and flexibility of movement. The following is a brief introduction to it.


1. Material selection of cleanroom door in the operating room


Generally, in terms of material selection, the cleanroom door in the operating room needs to use various materials such as steel plate riveting and welding structure, inner clip protective paint, or lead plate according to the needs of users. It is suitable for the protection of doors of high radiation dose detection, nuclear energy equipment room, radiation source warehouse, etc. It is an essential product for industrial flaw detection, exposure equipment room, and radiation protection.


The power beam device of the airtight door is an aluminum alloy profile. Its transmission structure is reasonable and reliable, with a life span of up to 1 million times, and the sealing performance requirements meet the GB/T7106-2008 level 8 standard.


The internal production of the cleanroom door body adopts the rigid polyurethane integral high-pressure foaming process, the high-strength aluminum alloy frame, and is pressed and formed by the large platform of the automatic lifting hydraulic equipment. This production can ensure a good flatness of the door. The surface can be decorated with a large flat matt stainless steel plate, plastic sprayed steel plate, anti-fold special plate, and other plates according to user requirements.


2. Performance requirements for cleanroom door in the operating room


The operating room has high requirements for purification and airtightness. There needs to be a certain pressure difference between the operating room and other areas. If the pressure difference changes due to airtightness issues, then outside of the operating room air may enter the operating area. Therefore, in an emergency, whether the cleanroom door can be opened and closed smoothly, whether it can meet the airtight requirements during the sealing process, and whether it can ensure that no electromagnetic interference is generated to any other precision medical equipment. The above are very important for the operation to proceed smoothly.


The welding points of cleanroom door in the operating room: Its melting point is very low and is 327. The thermal conductivity is also only 43% of iron. Therefore, a heat source with a low temperature and a small energy rate should be used during welding. Commonly used heat sources are oxyhydrogen flame and oxyacetylene flame.


After the electric airtight door of the operating room is melted, a layer of oxide airtight door film with a melting point of up to 1525 is easily formed on the surface of the molten pool, which prevents the metals from fusing with each other, forming slag inclusions in the weld and incomplete penetration of the edges. Due to the high density of the airtight cleanroom door, the density is 11.34g/cm3, the melting point is low, and the fluidity is high, so it is difficult to weld horizontally and overhead. If it is not well controlled, it will cause a large amount of melt to flow.


It has a low boiling point of only 1619. During welding, the evaporated material combines with oxygen in the air to form toxic oxides. Therefore, poisoning should be prevented during the welding process. The cleanroom door in the operating room has a high deformation capacity, and there will be no significant welding stress and cracks and deformations caused by the stress in the weldment after welding.