火试金炉膛马弗
火试金炉膛马弗
赛特瑞专业生产电加热火试金实验室用试金炉、灰吹炉和熔样炉，并销售配件，如：高温炉马弗炉膛、炉砖、炉砖、碳化硅、加热加热器、粘土坩埚、镁砂灰皿、火试金辅助工具。
马弗料采用氧化铝多晶纤维材料，保温性能好，重量轻，减少了设备能耗、重量和外形尺寸的浪费。改变了传统的能耗高、体积大、体积大的缺点。凭借这一势，它可以广泛应用于陶瓷、金属、建材、电子、冶金、医药、化工、玻璃、机械等单位的工业实验和高温热处理。
Furnace muffle
Sigma specializes in the production of gold testing furnace, ash blowing furnace and sample melting furnace for electronic fire testing laboratory, and sells accessories, such as high-temperature furnace muffle furnace, furnace brick, furnace brick, silicon carbide, heating heater, clay crucible, magnesia ash dish and fire testing auxiliary tools.Muffle material is made of alumina polycrystalline fiber material, which has good thermal insulation performance and light weight, reducing the waste of equipment energy consumption, weight and overall dimension. It changes the traditional disadvantages of high energy consumption, large volume and large volume. With this advantage, it can be widely used in industrial experiments and high-temperature heat treatment of ceramics, metals, building materials, electronics, metallurgy, medicine, chemical industry, glass, machinery and other units.
Preheat the sample melting furnace to 960°C in advance, open the furnace door, and place the crucible at this time. The furnace temperature will drop to 860°C. Close the furnace door and continue to heat up. The temperature will rise to 940°C in about 15 minutes. Keep it warm for 10 minutes. Raise the temperature to 1150 degrees quickly. After the temperature reaches 1150 degrees, keep it for 10 minutes, then open the furnace door to take out the crucible.
Use a crucible fork to pour the liquid in the crucible into the steel film to cool down (when taking out the crucible, rotate the crucible steadily several times, and gently tap the steel film 2-3 times to make the lead beads attached to the wall Sink, then carefully pour all the melt into the cast iron mold). After cooling, the mold is lifted to separate the upper slag from the cone-shaped lead, and the slag is discarded. Obtain metal lead buttons enriched with precious metals.
(The formation of lead buttons: due to the high specific gravity of the lead alloy, it sinks to the bottom of the crucible. At the same time, the base metal oxides and gangue in the sample react with fluxes such as silica, borax, sodium carbonate, etc. Generate slag such as silicate or borate, which floats on it due to its small specific gravity, thereby separating the gold and silver from the sample), and place the poured crucible on the crucible storage cart.
推荐内容
NEWS
