Ten die-common problem:
1,【hammer stuck】
To avoid hammer stuck, you can two-pronged approach: 1, in production, always measure the temperature, to avoid the hammer, Division tube caused by high temperature hammer stuck; 2, the use of materials, should choose high-quality alloy materials to prevent infiltration of impurities, put the material back in time, it must be careful not to allow contamination, so as to avoid impurities from sticking to the hammer, causing the hammer stuck.
2,【Plunger stuck in gooseneck】
Hammer stuck encounter problems, first wait until devices are in normal condition, try rotating hammer. If we can not move, then use to change the way things Division tube, remove the hammer. If you want to quickly solve the problem of jamming, the fastest way is to change the material maker.
3,【when die-casting machine hits the material, often appear to play dozens of mold, the situation could not hit the material, and often have to wait a few minutes before playing material】
Generally encountered such a situation, it should be the nozzle head or nozzle body blocked. In this case, observe the cutting tip is if there is no bright spot, if all sections of gray, it means blocking the nozzle.
Solutions are as follows: 1, increase the nozzle temperature adaptation; 2, playing time is down from the nozzle case from 0.1 to 0.2 seconds; 3, the fixed mold cooling water slightly off a small point.
4, [when die-casting of thin-walled products easy to crack]
You can go analyzed from the following points: 1, the material may be a problem, the use of die casting material, the proportion of waste not to try to control more than 30%; 2, mold opening is not good, one ejection force imbalance; second is the cooling water open mold temperature imbalance caused by an irrational, unreasonable flow alone is filled. 3, process parameters properly, the process parameters of the problem mainly in the magic of time and stay on top of the time delay error, leaving die time not long, each mm thickness of about 3s; the top of the time delay is not long, usually 0.5-2s.
5,【when ADC14 die-casting process feedback rigid material, tool wear conditions】
To solve this problem, you can see from the following points into: 1, the key is to come oh inner components does not allow generation of impurities, ie hard spots, all the best to be the new raw material ratio, can not be recycled materials, especially elements S1 better quality; 2, should be used specifically for these relatively hard alloy blade produced gems, the general life of seven days.
6,【wondering why some aluminum die casting spots will be at the finish?】
There are a few reasons: It may be silicon oxide or oxide of aluminum ingots to solve problems. But the biggest possibilities from mold release agents, mold release agents or organic content spray too much release agent is too high. These organisms at a temperature of hot melt aluminum, some are reduced to carbon, some organic molecules into polymers. Carbon molecules and mixed polymers, in the form of aluminum castings, is contained in the surface become visible to our spots. So reducing the concentration of spraying agent to switch to other spraying agent; or lengthen the time hair after spraying.
7,【in die-casting process, sometimes splashing of the metal】
Why splashing of the metal original spots because sometimes there may be several: move, scheduled to die between the clamping is not tight, a larger gap between the two; or clamping force is not enough cause metal splashing; or die-casting maneuvers? scheduled to die without causing parallel installation; or strut span, injection pressure resulting in lagging deformation, resulting in the paste. For these reasons may encounter the following circumstances debugging resolved by splashing: Reinstall mold; increase the clamping force: Adjust the die-casting machine, so moving, fixed mold mounting plate parallel to each other; to increase the support plate on the movable mold, increase Taoban stiffness.
8,【aluminum die-casting hole machining, why can not exceed 0.25mm?】
In order for casting, people in the use of aluminum die-casting plus a lot of silicon. When aluminum condensation in the mold, these silicon will float to the surface, forming a layer of silicon film hardness is very hard, very wearable, several OEM designers take advantage of this feature, the interior surface of the die casting design directly to the bearing surface . The silicon surface layer, generally only 0.2 to 0.9mm thickness. Working too much, the noodles bearing surface will be shortened.
9, 【there are die-back piece anodized pattern produced what reason?】
1, the main or spraying, injection oil spread unevenly, gathered at the local, which led to the surface of the aluminum alloy composition or appear abnormal cold shut piebald, hence the oxidation pattern of the phenomenon; the oxidation pattern of lines and die casting lines are basically the same. 2, because the high-speed switching position improperly, resulting in less-cast, there will be the pattern after oxidation. 3, the textbooks say that high levels of copper ion oxidation tank, also produce the pattern, but this is rare.
10, 【die-casting mold sticky material 】
Die casting sticky material how to do it first checks the mold temperature is normal, proper lower metal pouring temperature and mold temperature;? 2, check whether the abnormal release agent ratio, try to replace the release agent, debugging SPRAY polishes, nitrized mold have been carefully polished to prevent the destroyed surface nitriding layer formed further behind the more sticky situation; 4, improved gating system design structure, to avoid continued erosion alloy liquid cavity wall or core; 5, modify mold cooling system; 6, die-casting process parameters adjustment, due to lower injection speed, shorten two speed travel.