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Views: 188 Author: Site Editor Publish Time: 2025-08-25 Origin: Site
As a core decorative and structural material in Clean Room Construction, the quality of its installation directly impacts the cleanroom's airtightness, aesthetics, and long-term reliability. Whether in pharmaceutical or electronics factories or medical operating rooms, a rational layout of the Wall Sandwich Panels, precise installation procedures, and a rigorous construction process are crucial for ensuring a cleanroom environment meets standards. This article will detail the construction steps and precautions for cleanroom color-coated steel panels, covering key aspects such as drawing review, factory prefabrication, wall and ceiling installation, column and corner treatment, and silicone sealing application. This will help construction personnel and project managers ensure both efficiency and the achievement of both construction quality and cleanliness standards.
Be familiar with the Clean Room Drawings and carefully review the color-coated steel panels' layout, joint requirements, their relationship to the building, the color, filler, and basic dimensional requirements of the color-coated steel panels themselves, the dimensions and placement of doors and windows within the color-coated steel partitions, the types of auxiliary materials, and any other unspecified details.
This is a crucial step in the prefabrication and installation of color-coated steel panels. It converts the design drawings into intermediate drawings that can be processed again at the factory. Standardized panels are then produced at the color-coated steel panel factory and assembled on site, ensuring the panels' strength and expediting installation.
During cleanroom factory prefabrication, based on experience, sufficient clearances and installation allowances are carefully considered between door and window openings and seams. During transportation, production, and installation, the surface must be protected from scratches, heavy pressure, and impact to prevent uncorrectable dents and scratches. The plastic protective film on both sides of the color-coated steel sheeting should only be removed after installation is complete and a thorough cleaning is performed.
Before installing the cleanroom color-coated steel sheeting, layout work should be performed after the floor (or floor) is completed and other relevant installation conditions are met, including the delivery of larger equipment, the adjustment of concealed ground piping, and the substantial completion of the main installation work in the technical mezzanine. Layout involves marking the horizontal projection (50mm wide) of the color-coated steel sheeting and the locations of doors and windows on the ground. The center lines of the upper and lower manholes should be aligned vertically, with an error within 1.0%, or 3mm.
The lower trough is generally made of aluminum alloy profiles with internal and external rounded corners. Use nails to secure to the lines drawn on the ground. The nails should be placed 1.2-1.5 meters apart in straight lines, and 0.2 meters from the edges at corners and ends. If using waterstop rubber strips, place two rubber strips (Ø2-3) under the trough before nailing. This will form a waterproof barrier after the nails are fixed. The upper trough is made of pressed aluminum. For hard ceilings, secure it to the ceiling with a nail gun. For soft ceilings, suspend it below the floor using a hanger rod. The height should be based on the clear ceiling height.
For fine vertical Wall Sandwich Panels, install the prefabricated components according to the layout diagram. Use fixings between components to lock adjacent wall panels. It is important to ensure that concealed electrical wiring and boxes are properly aligned during wall panel assembly. The wall panels should be vertical, with close vertical joints. The smaller the gap, the better the appearance. The vertical joints should be uniform. During installation, carefully clean the protective film on the vertical joints and temporarily remove it, but never remove it. Clean out debris and any solidified adhesive lumps from the grooves. Otherwise, even with great force, it will be difficult to adjust the vertical joints to be uniform and tight.
The weight of the ceiling is supported by the vertical panels fixed to the perimeter and the T-shaped aluminum suspended in the center. The long side joints are secured and reinforced with fixing plugs, while the short sides are secured with T-shaped aluminum and connecting plate blind rivets. The ceiling should be flat, with uniform, smooth, and scratch-free joints. The same precautions apply as for the vertical wall panels.
Wrapping columns within the cleanroom with 50° color-coated steel plates separately helps save material and maintain a uniform internal and external corner angle of 50°. First, securely install stainless steel door and window frames in the door and window openings. Pay attention to the opening direction when installing the doors, and install the window glass. The door closer should be adjusted for opening speed and force. Generally, the first half of the closing stroke should be fast, while the second half should have less torque and slower speed to minimize impact and noise.
Within the cleanroom, all gaps that could affect cleanliness should be coated with sealing silicone: joints between color-coated steel panels, all gaps between rounded corners and wall and ceiling panels; gaps between air conditioning ducts, vents, and HEPA Filters and wall and ceiling panels; gaps between protective conduit slots for electrical passages through wall and ceiling panels and the edges of openings; gaps between all switches, sockets, and lighting fixtures and the color-coated steel ceiling panel; gaps between all process, water supply, and drainage, and protective conduits and openings; and gaps between glass and frames.
Sealing silicone should be applied uniformly throughout the cleanroom after color-coated steel panels are essentially installed, sanitary conditions are good, and the cleanroom has been thoroughly cleaned and dusted. Otherwise, the silicone seams may become contaminated and blackened. Within 24 hours of applying the silicone sealant, avoid heavy dusting and water washing, which could affect the cure and durability of the sealant.
