Medical Marijuana Card in Baltimore MD Online on HappyMD
Learn about Medical Marijuana Card in Baltimore MD Online, Medical Marijuana Doctors in Baltimore, Maryland. Find Medical Marijuana Card in Baltimore MD Online reviews and more on HappyMD.
Mold Burn marks troubleshooting, Burning defects, Issues
What is Burn marks troubleshooting Burning marks, or dieseling defects, This defect will often show up as black, gray, or brown discoloration on the part surface. This is the result of gasses and volatiles getting trapped, compressed, and heated in the mold during injection. This gas will burn the front of the polymer flow front by the high injection pressures and speed. Burning marks normally occur at the end of fill, or the flow ends, such as the end of the ribs or deep ribs area., we call gas traps, venting defects as well. Cause and solutions The mean reason to cause the Burn marks issues are the air, which the air did not escape […]
How to avoid the Air Traps Defects, Air Vent by Part Design
How to avoid the Air Traps Defects As plastic fills the mold cavity, it compresses the air that is in the cavity. The pressure of the air pocket increases until the required pressure is achieved to push air out of the mold vents. If the areas where the air is trapped do not have a vent, the pressure of the air pocket will approach the pressure of the injection pressure causing several quality issues. The high pressure air pocket could cause a short shot and/or a poor weld line, and/or burn marks or small black spots on the part. Because air traps defects are seldom thought of in the design process, it is almost routine […]
This Cyberoam training is for security professionals who recognize insider threats and user-targeted external threats while giving them expertise in networking and security fundamentals.
CHINA PLASTIC INJECTION MOLD/MOLDING MANUFACUTRING COMPANY
PLAS.CO is plastic injection molding manufacturing company in China, offer high precision custom mold/moulding service, is one of the best injection molder in China