Introduction of operation methods and precautions of plywood hot press

Hot press we often use in the production of mechanical products, plywood hot press is based on the hot press machine for upgrading products. Plywood hot press can be divided into two types: periodic and continuous according to the operation mode, and the periodic multilayer hot press is commonly used in China. Many people do not know enough about plywood hot press. Today we will introduce its operation methods and precautions.

Operation method of plywood hot press

1. Turn on the power supply of the hot press and check whether the equipment parameters are within the specified range;

2. Put the hot pressed product into the hot pressing fixture to fix it well. Do not touch the hot pressed aluminum plate with both hands to prevent scalding;

3. Leave both hands out of the aluminum plate range of the hot press, and press the hot pressing switch to press it down after checking that there is no abnormal condition;

4. When the hot pressing reaches the specified time, it will rise automatically. In case of abnormal situation, press the emergency switch quickly;

5. Do not stack any sundries above the hot press or beside the switch to prevent danger.

Precautions for plywood hot pressing

1. Hot pressing time: there are 16 to 24% resin in the back of veneer immersion. Polycondensation reaction takes place during the hot pressing curing process, which will release a lot of heat. If the thickness of the product is too large, the heat will be released. Therefore, when the product thickness is greater than 25 mm, each millimeter product thickness is pressurized for 4 minutes; when the product thickness is less than 25 mm, each millimeter product thickness is pressurized for 5 minutes. The hot pressing time is calculated initially when the unit pressure and hot pressing plate temperature reach the regulated value;

2. Hot pressing temperature: hot pressing plate temperature at plate loading: 40-50 ℃; hot pressing temperature: 145-150 ℃; hot pressing temperature: 40-50 ℃; hot pressing temperature: 40-50 ℃;

3. The time required for self loading temperature to rise to hot pressing temperature: 30 to 40 minutes when the product thickness is greater than 25 mm; 20 to 25 minutes when the product thickness is less than 25 mm.