Common crack problems in die-casting parts may occur during the manufacturing process or during use, which will adversely affect the performance and reliability of the parts. Here are some common causes of die casting crack problems and their corresponding solutions: 1.Mold design issues: Cause of the problem: Unreasonable mold design, such as too weak areas, uneven structure, etc., may cause stress concentration in the die casting during the cooling process, thereby causing cracks. Solution: Optimize the mold design, increase the support structure, and reduce the stress concentration area of the die casting to reduce the occurrence of cracks. 2.Improper metal temperature control: Cause of the problem: Too high or too low a metal temperature may cause cracks in the die casting during the cooling process. Solution: Strictly control the pouring temperature and cooling speed of the metal liquid to ensure that the metal temperature is within an appropriate range and avoid excessive temperature gradients. 3.Metal shrinkage problem: Cause of the problem: Metal shrinks during the cooling process, and if the shrinkage is uneven or larger than expected, it may cause cracks. Solution: Optimize the alloy composition and gating system, reduce the shrinkage of the metal, and take subsequent heat treatment or stress relief measures to reduce the internal stress of the die casting. 4.Excessive cooling or improper heat treatment: Cause of the problem: During the cooling or subsequent heat treatment process of die-casting parts, improper temperature control or excessive processing time may lead to uneven organizational structure, which may lead to cracks. Solution: Strictly control the temperature and time of the cooling and heat treatment processes to avoid excessive heating or heat preservation to ensure a uniform and stable organizational structure of the die casting. 5.Improper operation: Cause of the problem: Improper control by the operator during the die-casting process, such as excessive pressure, temperature or speed, may also cause cracks in the die-casting parts. Solution: Train operators to ensure they understand and correctly implement operating procedures, strictly control die-casting parameters, and avoid operating errors. Through the above measures, the problem of cracks in die castings can be effectively prevented and reduced, and the quality and reliability of die castings can be improved. Longhua has extensive experience in the field of designing high-precision molds, which can effectively prevent and reduce cracks in die-casting parts and improve the quality and reliability of die-casting parts.

New Year Holiday Notice: Bengbu Longhua Die Casting Machine Co., Ltd. will have a Spring Festival holiday from 2.5 to 2.16, and will resume business as usual on 2.17. Normal quotation and order acceptance during the Spring Festival Thanks to new and old customers for their support over the past year! I wish you all a Happy New Year and all the best in advance!

Q: What if the mold cannot be locked? A: The cause of the malfunction: 1. The safety door is not closed or the travel switch is loose 2. The locking pressure is too low 3. The solenoid valve is stuck 4. The top and back pressure are not in place Handling method: 1. Check the safety door switch signal 2. Increase the locking pressure appropriately 3. Clean or replace the solenoid valve 4. Check if each action is in place

Q: What if the oil pump rotates but there is no pressure? A: The cause of the malfunction: 1. Damaged oil pump 2. The overflow valve is stuck or damaged 3. Too many system leaks Handling method: 1. Repair or replace the oil pump 2. Clean and repair the overflow valve 3. Check if the shut-off valve is closed

Q: What should I do if the oil pump suddenly stops rotating? A: The cause of the malfunction: 1. Thermal relay overload 2. Loose power cord or parts 3. The motor is broken Handling method: 1. Check if overloading is caused by long-term action. If so, readjust the current setting value of the thermal protection relay. After troubleshooting for 2 minutes, press the reset button 2. Tighten the wiring 3. Repair or replace the motor

Q: How to solve the abnormal sound of the oil pump in the die-casting machine? A: The cause of the malfunction: 1. Power supply phase loss 2. Oil pump reverse rotation 3. Oil pump damage 4. The system pressure is too high Handling method: 1. Check the three-phase power line 2. Swap any two power cables 3. Repair or replace the oil pump 4. Adjust the relief valve to ensure that the system pressure meets the regulations

Dear partners: As we approach the New Year, Bengbu Longhua Die Casting Machine Co., Ltd. would like to take this opportunity to express our most sincere gratitude to you. Thank you for your trust and support in us over the past year. It is with your company that we can continue to make progress. In the past year, we have worked together to meet various challenges and gained a lot of joy. At this moment of bidding farewell to the old and welcoming the new, Bengbu Longhua Die Casting Machine Co., Ltd. would like to extend its most sincere New Year's greetings to you! Thank you for your continued support and trust in the past. The specific time of our company's New Year's Day holiday is from December 30, 2023 (Saturday) to January 1, 2024 (Monday), a total of 3 days. Go to work on January 2, 2024 (Tuesday). On this special holiday, we not only want to send you our most sincere blessings, but we are also willing to provide you with high-quality services. In the coming 2024, we will work harder and look forward to working with you. During the holidays, our service team is still on standby to provide you with dedicated support to ensure that your needs are responded to in a timely manner. Finally, I wish you and your family happiness and good health in this warm holiday and a happy new year! Bengbu Longhua Die Casting Machine Co., Ltd. December 28, 2023