This article will talk to you about the reasons why PC products are out of service. slot machine ph casino,slot ph casino,slot machine casino,slot casino,slot ph,BAY888.com The world's leading slot game platform, providing exciting gaming experience and generating rewards. Join now and start your journey to victory!

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Dear masters, please ask how the PC material breaks

1. Compared with PCABS material, PC material has higher strength and rigidity, but it also has higher brittleness. Make it more prone to fracture when subjected to impact or temperature changes. This is because the molecular structure of PC materials makes it easy to crack and expand when subjected to stress or heat, causing the material to break. In contrast, PCABS compound is mixed with ABS resin to form a composite material with toughness and rigidity.

2. Problems with the material itself, such as recycled materials, or the impact resistance of the materials is not enough, use better materials, and also whether the structure is reasonable or unreasonable. No matter how good the materials are, problems will arise. 2. When the temperature is increased during injection molding, the temperature is increased. For example, when the temperature is 300 degrees high, the PC plastic will decompose and become brittle.

3. The root cause of cracking of PC plastic parts is usually directly related to stress, environment, external impact or material defects. Cracking caused by molding or assembly stress Improper injection molding process (such as too fast injection speed and too long holding time) will solidify internal stress, and this hidden stress will be suddenly released during use and cause cracks; forced assembly of interference fit will also cause plastic parts to withstand excessive extrusion, such as "barely stuck parts" that easily break at stress concentrations.

4. Internal stress problem Residual stress during the molding process: Uneven cooling during injection molding will cause internal stress to accumulate. For example, products with large differences in wall thicknesses have different cooling rates at the junction of thickness, which is prone to crack germination points. New stress is caused by processing: If the parameters of post-processing such as drilling and cutting are inappropriate, the balance of the material structure may be destroyed. When using a low-sharpness drill to machine PC plates, the cutting heat will cause whitened crack areas to form around the hole.

5. It will cause internal stress in the product. If these internal stresses are not released through appropriate annealing treatment, they will gradually accumulate during subsequent use or storage of the product, eventually leading to deformation, cracking or aging of the product. Annealing treatment is an effective method to eliminate internal stress. It can keep plastic products at a certain temperature for a period of time, allowing the internal stress to be gradually released, thereby improving the stability and durability of the product.

What is the reason for pc material product cracking

1. Cracking of PC products is mainly caused by internal stress in materials, environmental erosion, structural design defects and external impact. Internal stress problem Residual stress during the molding process: Uneven cooling during injection molding will cause internal stress to accumulate. For example, products with large differences in wall thicknesses have different cooling rates at the junction of thickness, which is prone to crack germination points. New stress is caused by processing: If the parameters of post-processing such as drilling and cutting are inappropriate, the balance of the material structure may be destroyed.

2. Excessive holding time or excessive pressure: excessive stress near the gate causes cracks. Inappropriate mold temperature: too low temperature, poor flowability, too high temperature, increased brittleness. 2 Improper demolding and excessive demolding force: insufficient demolding slope of the mold or rough surface leads to stress cracking. The design of the ejection device is unreasonable: uneven ejection speed or position causes excessive local stress.

3. Apparent gray-black markings may occur near the gate, in the middle of the runner and in the part far away from the gate. It can only be seen in transparent parts, and often has this phenomenon in products made of PMMA, PC and PS materials. Physical reasons If the metering process starts too early and the air wrapped in the particles in the screw feeding area does not overflow the feed port, the air will be squeezed into the melt. However, the pressure in the feeding area is too low to move air behind.

What is the reason why the screw columns of the PC plastic shell are easy to break after being assembled into a finished product

1. There are two possible reasons: 1. If the screw post breaks at the bottom, it means that the strength of the bottom is not enough. Adding reinforcing ribs at the bottom can avoid breaking. 2. If the screw post breaks at the upper part, the screw may break the screw post after the screw was placed, which requires increasing the inner hole size of the screw post.

2. The core reason for the plastic column breaking at each fixed place is that there is stress concentration at this position and is affected by the synergistic effect of material aging, chemical corrosion or installation design defects. The fixed point where the stress concentration is usually the key node for force transmission. When subjected to external forces such as bolt tightening, wind force or collision, the local pressure will increase sharply. Repeated concentrated stress will gradually destroy the internal structure of the plastic and eventually lead to fracture.

3. This situation is most likely due to Xu Lian's situation. Because Xu Lian's situation would achieve extremely large instantaneous power, this situation occurred.

4. At the same time, compared with metal materials, plastic materials are also prone to aging and becoming brittle, which greatly reduces their fatigue strength. Use is unreasonable. Plastic materials are different from metal materials in that their compressive strength is generally better than their tensile strength. In order to make the instrument or equipment more firmly used, the screws are usually tightened hard, so that the tensile force (force expanding in all directions) on the plastic screw column is greater than the design force, shortening the service life of the screw column.

5. Silicone gaskets with a diameter of 2mm are often used when repairing common smartphone casings. Material pre-processing reserves a counterbore structure for the screw post during the injection molding process, and the indentation can be effectively hidden with a depth of 0.3-0.5mm. When ABS+PC materials are commonly used for power tool plastic casings, the diameter of the counterbore can be set to twice the diameter of the screw head. The recommended torque of precision screwdrivers for locking parameter adjustment is set in the range of 0.15-0.3N·m.

This is the end of the introduction of the reasons for PC material product breakage and PC materials are easy to crack. slot machine ph casino,slot ph casino,slot machine casino,slot casino,slot ph,BAY888.com The world's leading slot game platform, providing exciting gaming experience and generic rewards. Join now and start your journey to victory!。