Many people like to wear precious metal jewelry such as bracelets, necklaces, rings, earrings, etc. The main metals used in jewelry are gold and platinum.
The first step in making precious metal jewelry is to melt the precious metal through a melting furnace. There are many types of melting furnaces on the market. We will encounter some problems when choosing a melting furnace. We don’t know which melting furnace is more suitable for our metal material melting needs.
In the jewelry industry, it is common to use induction furnaces to smelt metals. So if you want to choose a smelting furnace, you need to pay attention to the following points:
In fact, induction melting furnaces are commonly used in intermediate frequency and high frequency electric furnaces. The maximum temperature of the intermediate frequency melting furnace is 2600°C. The maximum temperature of the high frequency furnace is 1600°C. So if you’re looking to buy an induction stove, it depends on the metal you want to melt.
The melting point of gold is 1064°C, the melting point of platinum is 1768°C, and the melting point of silver is 961°C. So if you melt gold and silver, you should use a high frequency melting furnace, not an intermediate frequency furnace. If the melting temperature is too high, it will cause a change in the quality of the metal. Molten metal can become contaminated.
By the way, when choosing a melting furnace, we also need to pay attention to the type of crucible. There are two types of crucibles: graphite crucible and quartz crucible. Depending on the melting temperature, graphite crucibles are used in high frequency furnaces. And quartz crucible for intermediate frequency furnace. Quartz is more resistant to high temperatures than graphite. It should be noted that silver can only be used in graphite crucibles, not in quartz crucibles. Because the silver reacts with the quartz and prevents the silver from melting completely, it will then stick to the crucible and cause high losses.
Post time: Feb-08-2023