单晶炉中的籽晶杆、坩埚杆及送料杆都是用4Cr13制造的纽长杆件,热处理时要求具备加热至1100℃的井式炉,为此我们砌造了高温深井盐浴炉。由于炉底是固定的,它截面积小,且深度深,故捞渣困难,把渣捞净就更不易。炉渣沉积在炉底,使其深 The seed rods, crucible rods and feed rods in the single crystal furnace are all new long rods made of 4Cr13. During the heat treatment, it is required to have a pit furnace heated to 1100 ° C. Therefore, we built a high temperature deep well salt bath furnace. Because the bottom of the furnace is fixed, it has a small cross-sectional area and a deep depth, so it is difficult to catch the residue, making it even harder for the residue to be scavenged. Slag is deposited on the bottom of the furnace, making it deep