Cognitive Misconceptions of High-Frequency Induction Heating Melting Machines
Release time:
2021-03-19
Due to high frequency Fusion machine Currently, relatively few people use it, and there are several misunderstandings about it. We will compare it with an electric heating fusion machine for explanation:
1. Temperature control accuracy cannot meet the requirements: Compared with electric heating fusion machines, high-frequency fusion machines are indeed not advantageous in terms of temperature control accuracy. However, with the application of infrared temperature measurement, there is no need to use the old contact temperature measurement method, and the temperature control accuracy is getting higher and higher. In particular, the FHC-00 type high-frequency fusion machine has achieved ±1℃, which can meet the daily sample preparation needs when the actual melting temperature is generally above 1000 degrees.
2. Inconsistent temperature at each workstation: This is because some manufacturers' high-frequency fusion machines use a series connection for the heating and temperature control system, which leads to inaccurate measurement of the temperature at each workstation. Currently, the FHC-00 type high-frequency fusion machine adopts independent heating and independent temperature measurement for each workstation, providing real-time feedback of the actual temperature at each workstation.
3. Not suitable for large-scale sample preparation: This is because multiple workstations may result in inconsistent high-frequency melting temperatures at both ends. Existing high-frequency melting machines mostly have two workstations, which is less efficient than the four or even six workstations of electric heating fusion machines. However, solving the problem of workstation temperature control also solves this problem. The current FHC-00 type high-frequency Fusion machine can achieve six workstations, and combined with the advantage of fast heating speed of high-frequency melting itself, it can reach 10 min/batch.
4. Crucible is easily damaged: The statement that high-frequency heating crucibles are easily damaged is incorrect. In fact, crucible damage is mainly caused by corrosion by oxidizing substances in the sample. You can familiarize yourself with the sample properties in advance and use pre-oxidation to reduce damage from oxides. At the same time, the FHC-00 type high-frequency fusion machine uses a casting method to protect the crucible as much as possible.
5. Support frame shedding: Shedding is mainly caused by the oxidation of the alloy support frame. However, compared with electric heating fusion machines, the current FHC-00 type high-frequency fusion machine uses high-temperature ceramics to replace high-temperature alloys as the support frame, which completely avoids the situation of oxidation and shedding of the alloy support frame contaminating the sample.
6. Requires external circulating water: Compared with electric heating Fusion machine high-frequency melting requires a circulating water system, but currently, a special small water chiller can be used, and pure water can be added once for long-term use, eliminating the need for external circulating water.
In fact, compared with electric heating fusion machines, high-frequency fusion machines are more efficient, faster, require no preheating, are ready to use, have a higher degree of automation, are easier to operate, have faster sample preparation speed, and have lower operating costs. It fully meets the current advocated energy-saving, energy-consumption reduction, and emission reduction environmental protection requirements and is a heating method that should be advocated.
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