Wax precision casting production is a key link in the process, wax quality will directly affect the quality of the casting, the wax used defects in ourfactory technicians summary and its solution: 1 deformation, wax, waxafter removal from the mould, in addition to the dimensions of narrowchange, sometimes because of incorrect removal technique human caused deformation; as wax is common in the cooling of the flexural deformation, so the wax out from the pressure of still be careful placement, usually with large plane surface, also may be the wax is too soft, resulting in pressure type design unreasonable factors. 2, wax fillingdissatisfaction, main reason is the low temperature wax, injection speed,pressure and temperature is low, cause the wax in the process of flowingcooling fast, thin wall part filled in the corner and edge part or wax, edges and corners of the place fillet, misrun this situation and metal casting a very similar. 3, the wax surface wrinkles, because the wax temperature is too low, low rate of fire, with wax movement and pressure type temperature improper; or because the pressure inside surface is damaged or not clean; chill metal block placed improper movement,leaving traces in the wax surface. Lines deep, cold septal defect similarmetal castings; there is in the core, around the hole around, and sometimes can be seen seams, slightly concave, is located at the junction of two shares of wax flow and not very good fusion, which is thewax temperature is not enough, lack of pressure results. 4, the waxsurface depression, is mainly the injection pressure and the lack of time,or wax material at high temperature, cooling time, sometimes from the type of release agent caused too much, surface depression relates to a larger area, repair is difficult, easy to cause the waste. 5, the wax hasflash, this is a kind of the most common defects, namely in the pressuretype, joint pressure type combined block, the core and the core seat connecting places like a wax work very thin. The main cause is lack of precision pressure type, pressure type surface or interior joint surfacedamage or attached dirt, or locking force is not enough, the injection pressure is too high. The temperature is too high or wax. Fin must be completely removed, wax to use. 6, wax and pressure type adhesive, this is because there is no use of mold release agent, or wax and pressuretype temperature is too high, or the pressure inside the surface is notclean caused by. 7, the wax surface roughness, the contact pressure is too low, or the rate of shoot density low wax and profiled inner surface is not enough, there will be a serious fold. 8, investment bubbles, one is the use of surface bubble are visible to the naked eye, another kind is thewax inside the bubble, usually larger, also cannot see with the naked eye, but can through local plump wax found, this is due to the gas inside the expansion caused by wax. Hope the above content to help youprecision casting production. Want to get more precision castinginformation, please visit our website.