n actual applications, the corresponding national standards, industry standards or enterprise standards should be consulted according to the specific type of wood plastic products to determine the accurate strength standard requirements. In addition, these standards may also include other performance indicators, such as dimensional stability, water absorption, Shore hardness, surface bonding strength, paint film adhesion, etc.
The reasons for surface defects in wood-plastic products during the production process may be: 1. Raw material quality problems: 2. Improper formula ratio: 3. Improper processing temperature control: 4. Unreasonable extrusion or injection speed: 5. Mold problems: 6. Uneven cooling: 7. Uneven mixing: 8. Environmental factors: 9. Unstable process parameters:
through reasonable adjustment of various parameters of mold water cooling, combined with real-time monitoring and analysis of product quality, and continuous optimization and adjustment, the quality of wood-plastic products can be effectively controlled.
A:Choose the solenoid valve of the plastic extruder, to consider the economy, do not ignore the quality. In terms of safety, suitable ones are selected according to the working conditions, such as waterproof, explosion-proof, etc. Reliability Normally closed or normally open depending on working duration and frequency. In terms of applicability, pay attention to media, temperature, viscosity, pressure difference, etc., including cleanliness, pipe diameter, etc., considering the influence of ambient temperature and power supply.
A:The solenoid valve for plastic extruder, when energized, the electromagnetic coil generates an electromagnetic field, attracting or pushing the valve core to change the opening and closing of the channel. Through the sensor monitoring, the control system signals when the parameters are out of range. The spool movement is affected by electromagnetic force, spring force, etc., the power is opened, and the power is closed under the action of other forces, so as to accurately regulate the fluid and ensure the operation and quality.
A:Bubble breaking is common and difficult in the production of PVC sheath foam board. The reasons are poor quality of raw materials, improper process parameters and unreasonable mold design. The countermeasures are strict selection of raw materials, optimization of process parameters and reasonable design of molds. It is of great significance to deeply understand the reasons and deal with them to improve product quality and production efficiency.
