Cold mold production plan 1.The mold in the cold mold state, to brush more oil, less spray. When the mold temperature reaches the technical requirements after the normal spray coating. Then the two blocks and pressurized gradually open, and according to the normal process of production. 2.Mold in the case of no preheating to low-pressure production, and the production parameters on the machine must be reduced or closed to zero (remember: do not open fast injection to prevent mold run and stick).Every production of a mold to brush the oil or demoulding paste, to prevent the cold mold adhesion with material phenomenon (aluminum temperature had better reach 680℃ above, so the mold temperature rise faster).Low pressure production of about 30 molds, with the exhaust device and injection in each mold to close the exhaust valve in time, at the same time to observe the normal operation of the active parts, and then debug the production parameters of the machine until the production of qualified products and extraction of finished products.In the die casting production, it is found that the gate and the casting parts have the phenomenon of aluminum sticking pull caused by impact.If there is running material, should be cleaned up in time, otherwise the more tight the pressure, the more difficult to clean up.

The correct preheat production plan of the mold 1.If the die casting mold needs to be preheated before production, the cooling water of the mold shall be temporarily closed, and then the water volume shall be gradually adjusted according to the mold temperature. When preheating the mold, be careful not to make the mold local overheating (dark red phenomenon), in case the mold annealing. 2.When preheating the mold, it is forbidden to use two-block injection or pressurized injection.It must be heated effectively without damaging the mold according to the design requirements of the mold.For those with thermostatic tubing, use a mold temperature controller for heat preservation and heating.If there is no thermostatic tubing, gas can be used to increase the temperature. When heating, it should be done gently, evenly and slowly so that the temperature rise of the core and the core seat can be synchronized with the expansion.When the mold temperature preheats to about 220°, run each moving part to prevent the normal operation from being affected by the phenomenon of tight biting due to thermal expansion.After producing about 10 molds at low pressure, the high pressure production parameters were adjusted and qualified products were extracted.In the early stage of die casting production, it was found that the sprue part and the casting part of the finished product had the phenomenon of aluminum sticking pull caused by impact.If there is running material, should be cleaned up in time, otherwise the more tight the pressure, the more difficult to clean up.

Mold use and maintenance manual After the acceptance of the mold, in order to make the mold to maintain the best performance state and prolong the service life, to ensure the normal production and product quality, to reduce the production cost as far as possible, when the mold is used, please follow the following items for necessary maintenance and maintenance. Mold production specification Inspection and installation requirements before mold production Before starting work, you must wear protective equipment, such as hard hat, work clothes and labor protection shoes. Wearing short-sleeved shirts, shorts and slippers is strictly prohibited. Before the installation of the mold, first of all to confirm the die casting machine specifications and mold design requirements to match. The die caster must have a thorough knowledge of the mold structure, including: Check whether the mould has core pulling (dynamic mould core pulling, static mould core pulling, oblique rod core pulling and hydraulic core pulling).         Whether it is necessary to install the pre-reset pull rod or strong spring of the ejector rod. Check whether the combination size of sprue sleeve, flange and melting cup is consistent. Confirm if it is the center sprue. Check the top bar position for no interference and ejection balance. Replace the molten cup punch according to the mold condition and adjust the injection lifting mechanism when necessary. Check the outer fastening bolt of the mold again, and confirm that there is no loosening phenomenon, the mold can be installed on the machine to ensure reliable installation of the mold. Check the die casting machine and mold moving template and static template mounting surface: no foreign body, no high point. Mould in die casting machine, to the right after tighten-up platen and installation is firm, and then to idle mode of the mould, check whether mold opening and closing smoothly and observe its each part movement is flexible, whether there are abnormal phenomenon, the ejection stroke, open schedule is in place, it fits the profile at the closing time, closely linking piece screws are tight, waterway, the oil was clear. Check the running of sliding parts on the mold. Such as guide post, guide sleeve, thimble, push rod ejection and other moving parts (bit) should be observed at any time, regular inspection, timely scrub and add lubricating grease, in order to ensure the normal and flexible operation of these sliding parts, to prevent tight biting dead. Adjust die closing, ejection pressure and distance, and install various auxiliary parts (such as water pipe, oil pipe, air extraction device). During the debugging process, check whether there is any damage, leakage or blockage in the connection of water pipe and oil pipe. When the pressure plate bolts of the mold installation are firm and do not become loose, the mold will continue to open and close the die casting machine for three or four times for debugging. ...

1. It will make the alloy structure in the die casting discontinuous; 2. Reduce the air tightness of the workpiece; 3. Die castings are easily corroded; 4. Reduce the strength and plasticity of die castings; 5. Die castings are prone to cracks; 6. The difficulty of later processing increases; 7. The scrap rate of die castings has increased; 8. Harmful impurities cannot pass through environmental protection.

1. Control the quality of raw materials; 2. The use of secondary materials is strictly in accordance with a reasonable ratio; 3. Use high-quality refining agents for metal smelting; 4. Use ceramic filter; 5. Vacuum melting and conveying; 6. Use ceramic spoons, crucibles, protective tubes, and discard iron tools; 7. Regularly clean up molds, tools, and working surfaces; 8. Use high-quality release agent and other auxiliary materials; 9.Keep the working environment clean.

When summer comes, the maintenance and maintenance of the die-casting machine becomes very critical. As the temperature rises, there will be various small problems of the die-casting machine. So how to maintain the die-casting machine in summer? Longhua die-casting machine is Your detailed explanation: The main reason for the die-casting machine is that its summer is relatively hot, so the oil temperature will be about 20% higher than in the past.In this case, we need to perform necessary replacement and maintenance of the seals during the maintenance process. The reliability of its use can be guaranteed. Die-casting machines have a large demand for cooling water in summer, so the scale in the cooling system of the die-casting machine must be very large, so the waterway needs to be cleaned, and a scale cleaner should be used for cleaning and descaling. Check during the use of the die-casting machine Nitrogen is very sufficient, and ensuring sufficient nitrogen is the key to the use of die casting machine. Before the workers leave work every day, carefully check the oil stains on the die-casting machine, metal, etc., if it is necessary to clean the oil stains on the machine, etc., the most important thing in the maintenance and maintenance of each part of the die-casting machine finishing agent The cleaning of the shooting chamber, etc., clean up the garbage and foreign objects on all parts of the machine, so as to avoid damage to the die casting machine parts when it is turned on again. Check the die-casting machine oil tank, hydraulic pump, hydraulic cylinder, hydraulic motor, hydraulic valve, pipe joints and pressure gauges, and oil circuit board connections for oil leakage before leaving get off work every day. If the die-casting machine has oil leakage, it should be updated immediately. deal with.

Features of Longhua Ladle machine  [use for die casting machine]： 1. Diversified functional options and multi-directional operation methods improve the performance and versatility of this model. 2. the overall structure is driven by a servo motor and a turbo integrated box, and a linkage arm is used. It runs smoothly, accurately and efficiently. It can brake smoothly even if it is told to move, and the filtrate does not overflow. 3.the soup machine is used as an absolute value servo motor, and the coordinates will never be lost, which prevents the use of proximity switches for the soup machine in the past to control the original coordinates. The coordinates cannot be found after a power failure and need to be reset.

Check and analysis of die casting machine fault-Injection pressure: If the pressure of punch drops sharply during injection, check: 1) Whether the injection hydraulic cylinder, pressure reducing valve and cartridge valve are internally discharged. 2) Whether the globe valve is tightened. 3) Whether there is nitrogen, insufficient nitrogen pressure or too high nitrogen pressure. 4) Accumulator is out of order.