What Is The Manufacturing Process Of Doors?

The door manufacturing process is a meticulous and highly detailed procedure that involves several stages, from material selection to final packaging. Each step is crucial in ensuring that the door has a stable structure, an appealing appearance, and functions properly. The process can be divided into material preparation, carpentry, surface treatment, assembly, and inspection, with each phase contributing to the final product's quality. Here's an in-depth look at the various stages involved in the door manufacturing process.

1. Material Preparation

step in the door manufacturing process involves preparing the raw materials, primarily wood. Proper wood preparation is essential to ensure that the door is durable, stable, and free from defects. The initial stage is drying, which helps control the moisture content of the wood. Typically, the moisture content should be kept between 8% and 10%, as wood with higher moisture can warp or crack during further processing.

Once the wood is dried, it enters the balancing phase, where it is left for some time to adjust to the surrounding environmental conditions. This ensures that the wood doesn't experience any deformation or cracking when worked on. After this, material selection and matching occur. The manufacturer will separate the wood into surface materials, internal materials, and darker materials to ensure consistent quality and color.

The next series of steps includes rough planing, trimming, gluing, and board splicing. The wood undergoes additional treatments such as aging, sanding, and width setting to refine its shape and dimensions, ensuring it is ready for the carpentry phase.

2. Carpentry

After the materials have been prepped, they enter the carpentry phase, where the wood is further shaped and processed. One of steps in carpentry is width sanding and thickness setting, which ensures the wood has the correct dimensions and is smooth. Fine cutting is then performed to eliminate any potential issues such as chipping or discoloration. At this stage, any length or width discrepancies are kept to a minimum, with errors not exceeding 0.2mm.

Once the wood is appropriately shaped, molding is done to process the material into the desired design. This stage ensures that all surfaces of the wood parts are smooth, flat, and dimensionally accurate within 0.2mm. Drilling follows, which involves creating holes for installation or specific functions of the door, such as hinge placements or handles.

3. Surface Treatment

One of the key stages in the door manufacturing process is the wooden door painting process. Surface treatment is crucial for enhancing the appearance of the door while also ensuring durability and protection from environmental factors. step in this process is rubbing and base coloring, which is followed by the application of a primer coat. The primer ensures better adhesion of the topcoat.

After priming, the door receives a topcoat, which is then dried. This process not only provides the door with an attractive finish but also protects it from wear and tear. The wooden door painting process is typically followed by spray painting, where a smooth layer of paint is applied to the surface of the door. This gives the door an aesthetically pleasing finish while increasing its protection against external elements.

4. Assembly

Once the surface treatment is complete, the next phase is assembly. The wood is assembled into a door frame, ensuring that the four corners are square, and the dimensions are precisely adjusted. A common practice is to increase the length and width of the door frame by about 10mm to allow for adjustments during assembly.

Hot pressing and cold pressing are used to ensure a strong bond between the wooden components and a smooth, flat surface. Edge trimming is then performed to ensure the door's final dimensions are accurate, with an error margin of no more than 0.2mm.

During assembly, the core board of the door is milled according to the design specifications, ensuring a smooth surface and precise size. For additional detailing, hand-made veneer is applied using white latex, ensuring that the veneer is flat and free of any gaps or peeling. Lastly, drilling keyholes and hinge holes is performed to facilitate installation, ensuring that these holes are correctly placed and without any defects.

5. Inspection and Packaging

Once the door has been assembled, it undergoes a series of final inspections. step is test installation, where the various parts of the door are checked for proper fitment. This includes verifying that there are no gaps or shaking when the door is installed.

The door's surface is then polished to ensure a smooth, defect-free finish. The final inspection ensures that the door manufacturing process has been successful, and the door meets all quality standards. After passing inspection, the door is packaged carefully, ready for shipment to customers.