Wooden Door Process

1. Wood drying

The raw material board (with moisture content of about 60-70%) entering the factory is put into a drying kiln for spray steaming and drying. The texture and thickness of the board are different, and the season is different, and the temperature, time and stabilization time of spray drying are also different. Generally, the steaming time is about 15min, the heating and drying time is about 25-30d, and the moisture content of the dried board is about 10-14%.

Steam injection and heating and drying are provided by the newly installed 4t/h coal-fired steam boiler. During the heating and drying process, according to the technological control requirements, it is necessary to open the moisture exhaust window of the drying kiln from time to time to discharge the steam in the drying kiln.

2. Cutting material:

(1) When rough cutting, increase the length and width by 10mm each; (repair required)

(2) If the material is combined, indicate the veneer material and indicate which door type combination;

3. Group frame

(1) The four corners are square, the length and width are increased by 10MM

(2) The outer frame width specification is 800-2000MM, the surface board is 6MM medium density board, and the middle is filled with Sauerland hollow creative board.

(3) Locking wood or lock box can also be used.

(4) If the frame is a glass door, determine the size and position of the glass

(5) After the frame is treated to prevent deformation, the upper press is flattened

4. Hot pressing process standard

(1) Before putting the workpiece that needs hot pressing, the hot pressing plate and the workpiece must be cleaned, confirm that there are no impurities, set the hot pressing temperature and pressure, and slowly put the workpiece in.

(2) The inserted workpieces should be arranged in an orderly manner, so that the force on each part is even.

(3) Fill all positions as much as possible for each hot pressing, and ensure that the thickness of each layer of plate is the same as the cladding material of each layer. The cladding material cannot overlap. If it cannot be filled, spare pads of the same thickness as the workpiece should be used.

(4) In order to prevent the glue from drying out, each loading should be completed within two minutes. When it is confirmed that it is correct and safe, start the machine again.

(5) The surface of the workpiece after pressurization should be flat, smooth, and free of unevenness and graininess.

(6) The parquet should be aligned.

(7) After cladding, the wooden door shall not be degummed, penetrated, laminated and separated from the core, scratched, indented, bumped, misaligned, oil stained, and the color is basically the same.

5. Cold pressing process standard

(1) The cold pressing time should be determined according to the temperature to ensure that the glue layer is solidified and the glue is firm.

(2) After pressurization, the surface of the type parts should be smooth, smooth, and without unevenness or graininess when touching.

6. Straight edge tailoring

(1) The cutting error does not exceed 0.2MM cutting standard

(2) Before inserting the workpiece, the pressure plate and the workpiece should be cleaned.

(3) The inserted work piece must not be misaligned, and the top and bottom are aligned with the core board, and there must be no chipping.

(4) Both sides of the door leaf should be inclined by 2 degrees, and the rest should be sawed into straight edges without scratches.

7. Process standard of milling door core board

(1) When milling the door core board, the feed force is even and there is no chipping.

(2) The appearance is smooth and round.

(3) Milling according to proportion, accurate size, no chipping;

8. Manual pasting

(1) When applying white latex to the skin, it must be dried for the first time and then brushed for the second time, and then ironed with an iron.

(2) Shovel the flat strip with a wooden board. ；

(3) After pasting, there must be no seam separation, degumming, bubbling, veneer cracking, etc.

9. Punch keyholes and hinge holes

(1) Pay attention to the opening direction of the door;

(2) Pay attention to the upper and lower ends of the door and do not turn around.

(3) There shall be no chipping, scratching, and special molds, and the holes can be drilled only after the clamps are clamped.

10. Trial assembly

(1) The corners of the door trim lines are tightly connected and must not leave the seams;

(2) The door leaf and the door cover are closely attached, flat, and must not be separated from the seam;

(3) The door leaf shall not be shaken in a gap;

11. Paint

(1) Before polishing, check the blanks, and do not process degumming, bubbling, scratches, and missing products;

(2) The white billet needs to be polished smooth, nail holes, and gaps need to be filled;

(3) The primer should be sprayed evenly, and checked for degumming and bubbling, and polished after drying;

(4) No particles, sagging, peeling, luster should meet customer requirements when spraying the finish;

12. Packing and storage

(1) Carefully check that the door leaf and door cover are not complete and the quality is up to standard. Unqualified products shall not be packaged and shipped. Wrong or missing colors are strictly prohibited, and the products must be handled with care;

(2) Before packaging, remove the glue marks and impurities on the working surface, wrap it with packaging film, and protect the four door corners with corrugated paper;

(3) Affix the label and fill in the warehousing form after warehousing.

13. Installation

(1) After confirming that the opening and the door are correct, carry out assembly, vertical sleeve calibration, glue fixation, and installation of the door leaf;

(2) The door cover and the wall are closed with glass glue, and more glue should be used under the door cover to prevent excessive water from entering the door cover