Single crystal furnace is the abbreviation for single crystal drawing furnace. This type of furnace is specifically designed to melt metal and draw it into single crystals (i.e. crystals in a single aspect). If the metal being drawn is germanium or silicon, then the single crystal produced by drawing is called germanium single crystal or silicon single crystal, and so on. Germanium single crystal and silicon single crystal are currently two widely used materials in semiconductor materials.

When people mention the stove, they associate it with smoke and dust. But a single crystal furnace On the contrary, it is a furnace with extremely high cleanliness requirements and strict control. It is not allowed to bring any dust into the room of the single crystal furnace. The higher the cleanliness between the furnace and the furnace, the higher the quality of the drawn product. Moreover, the control of the crystallization temperature of the furnace is a representative topic in modern control technology.

When drawing metal single products, the raw material (known as polycrystalline and refined in a polycrystalline furnace) is first loaded into a crucible of the single crystal furnace. At the same time, the parent single product - seed crystal is installed on the rotating shaft, and then the furnace door is closed to draw a high vacuum inside the single crystal furnace. Then, a resistor or high-frequency inductor is used to heat the crucible to a certain temperature. After the raw material melts, seed crystals are inserted, and the fused polycrystalline material begins to grow on the seed crystal field. As a result of the continuous rotation and pulling of the seed crystals, all the polycrystalline materials grow on the seed crystals, becoming single crystals.

The metal single crystals produced in this single product furnace have very few impurities and extremely high purity. Taking silicon single crystals as an example, the purity can reach a high purity of 99.999999%. This material is a fundamental material for national defense and military industry, and is essential for transmission in spacecraft, artificial satellites, rockets, missiles, and other fields. Therefore, single crystal furnaces are currently a special purpose equipment in the industry, especially in the semiconductor industry.