Novinky šperků

cz jewelry manufacturer Requirements for gemstones in wax inlay casting

Zveřejněno na podle Kingjy
An important indicator to measure the effect of wax setting is the stability of gemstones. The gemstones after wax setting cannot show discoloration, cracking, chipping and other problems. Because in the wax setting casting process, gems must withstand the thermal shock of high-temperature roasting and high-temperature molten metal during casting, the gems must be able to withstand relatively high temperatures and have a certain tolerance for uneven heating and cooling. This puts forward specific requirements on the type and quality of gemstones. The use of gemstones with cracks or sensitive to temperature and thermal shock may cause the gemstone to crack after casting. When using gems that have undergone heat treatment to change the color, the wax setting may have a negative effect after casting and affect the appearance and color of the gem. Navíc, in this complex process, there are many influencing factors. The influence of any factor may cause the gem to crack or change the appearance of the gem. Proto, wax setting casting is always risky. The suitability of various commonly used gemstones to wax setting process is classified, and gems can be roughly divided into two categories, suitable and unsuitable for wax setting. Gems suitable for wax setting If the quality of the gemstones is good and the process parameters of the casting process can be correctly controlled, good results can be obtained after wax setting. Such gemstones include diamonds, rubíny, sapphires, garnets, olivines, and jade cubic zirconia. Gems not suitable for wax setting After being subjected to high temperature and thermal shock, the gemstones that produce cracks and fragments, or the gemstones that become creamy or change the color of the color during the casting process, or the gemstones that burn at high temperatures, are not suitable for wax inlay casting. , Such as opal, amethyst, blue topaz, citrine, perla, jantar, coral, tyrkysový, atd.

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