Plywood wooden box is made of wood sections and cut into veneer or Batten Slice into thin wood, and then an adhesive Three or more layers of plywood are usually made of odd layers of veneer, and the fiber directions of adjacent layers of veneer are perpendicular to each other. Plywood The plywood produced with wood as the main raw material can largely overcome the defects of wood and greatly improve and improve the physical and mechanical properties of wood due to the rationality of its structure and fine processing in the production process. Plywood production is an important method to fully and reasonably use wood and improve wood properties.
Appearance and use characteristics
Plywood box products are flat in shape, with large width thickness ratio and large surface area per unit volume. This shape feature brings the following characteristics in use: (1) large surface area, so it has strong capacity to contain and cover container , buildings, metal products, metal structures and other aspects are widely used; (2) It can be cut, bent, stamped, welded and made into various product components. It is flexible and convenient to use door Occupy a more important position; (3) Profile steel that can be bent and welded into various complex sections Steel pipe Large I-beam, channel steel and other structural members are called "multi-functional steel".
Production characteristics
(1) The plate is rolled by flat roll, so it is easy to change the product specification, adjust and operate conveniently, and realize integrated computer control and automatic production easily;
(2) The shape of the plate is simple, it can be produced in coils, and its consumption in the national economy is large, so it must and can achieve high-speed continuous rolling production;
(3) Due to the large width thickness ratio and surface area, the rolling pressure in production is large, which can reach millions to tens of millions of Newton. Therefore, the rolling equipment is complex and huge, and the control of product width, thickness dimension accuracy, shape and surface quality becomes very difficult and complex.
