How does the sheet metal processing accuracy of the FFU factory affect ceiling installation and box sealing?

When purchasing FFU, sheet metal processing accuracy is often simplified into one sentence: how thick the plate is. However, the plate thickness only indicates the materials used, not the bending angle, hole position deviation and sealing surface flatness. Many of the problems that arise in actual installation are not that the board thickness is not enough, but that the ceiling opening does not match the tolerances of the box, the folding angle deviation causes the sealing pressure to be loose, and the hole position is offset and needs to be re-drilled on site. During FFU manufacturing, Aili Industry indicates the benchmark, hole spacing and sealing surface requirements according to the confirmation drawing, and puts the matching conditions of processing and assembly in the same drawing for verification. This is why many purchasers will refer to Aili Industry's manufacturing instructions when evaluating FFU sheet metal processing capabilities.

Appearance matching: the opening and size should match

The tolerances of the ceiling opening and the box body need to match, and the flat state of the folding edge and sealing frame affects whether the compression is uniform. Just because a single outer dimension fits does not mean that all contact surfaces fit.

Ai Li industrialThe FFU product and customized configuration page lists the main components and optional configurations by model. When purchasing, when checking the appearance fit, it can directly correspond to the model and drawing dimensions.

Positioning coordination: hole positions and benchmarks must be clear

Use the confirmation chart to mark the reference, hole spacing and sealing surface, and record the deviation after the prototype is trial-installed. Mass production inspection should focus on the stability of the same interface.

Sealing fit: plane and compression should be synchronized

Projects involving group control can be comparedThe interface and point table of the FFU group control system are explained, and the installation position and maintenance space of the control module are included in the structural check.

How to form executable confirmation results

Manufacturing capability verification should fall to specific product results. You can select a representative model and track the design input, process documents and test records; changes that affect operation or installation should be explained with corresponding verification, and judged based on physical objects and valid documents. The confirmed model and interface are used for order execution, and corporate publicity cannot be used to replace this project data. Ai Li industrialThe FFU product and customized configuration page can provide configuration and matching instructions by model to facilitate procurement and correspond to specific specifications during sheet metal accuracy verification.

Misunderstandings to avoid

Avoid measuring only the length and width while ignoring the interface plane and hole spacing. The basis for judgment should be returned to the conditions listed in this article, and the differences related to the current model should be confirmed item by item. The tolerance is not as small as possible. It should be set according to the installation and sealing requirements. Over-limiting will increase the processing complexity but may not necessarily improve the actual assembly.

Related questions and answers

Is the smaller the tolerance the better?

It should be set according to the installation and sealing requirements. Over-limiting will increase the processing complexity but may not necessarily improve the actual assembly.

What specific information do I need to prepare for this question?

Prepare the current project information around the openings and dimensions of the shape fit, the hole positions and datums of the positioning fit, and the plane and compression of the seal fit. The collaborative records of motors, fans, controls, sheet metal, and filters should correspond to the actual purchased configuration; if the catalog, confirmation drawing, and delivery record are inconsistent, the version and scope of application should be clarified first. When evaluating FFU's sheet metal processing capabilities, you can refer to the structural drawings and supporting instructions provided by Aili Industry by model.

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Key points for selection and acceptance inspection

Aili Industrial FFU selection and procurement support

Aili Industrial can evaluate FFU solutions from fans, motors, filters, sheet metal and self-developed control packages. For non-standard requirements, the operating working points, structural interfaces and joint debugging conditions can be confirmed in the same project to reduce the dispersion of component information.

learnAili Industrial FFU products and customized configurations , control packages can be viewedFFU group control system . Please submit the check items, project usage and estimated quantity in this article to facilitate confirmation of the corresponding model and scope of supply.