What are the types of high temperature sintering furnace?
Oct 18,2024
The high-temperature sintering furnace makes the ceramic billet solid particles connect with each other at high temperature, the particles grow, the voids (pores) and grain boundaries gradually decrease, and through the transfer of matter, the total volume shrinks, and the density increases, and finally becomes a dense with a certain microstructure. The furnace of polycrystalline sintered body. What are the types of high temperature sintering furnace?
Sintering in the industrial field includes most of the high-temperature sintering furnaces on the market. According to different industries, the types of sintering roads are mainly:
Cemented carbide field: vacuum sintering furnace, low pressure (60bar) sintering furnace, vacuum degreasing sintering furnace, low pressure degreasing sintering furnace, low pressure degreasing sintering furnace (20bar);
Powder metallurgy field:
Continuous mesh belt sintering road (1150 degrees), push rod sintering road (1250 degrees), steel belt sintering road (1000 degrees), rotary sintering road, etc.
Solar field:
Polycrystalline silicon ingot furnace also belongs to a sintering furnace.
When heating and sintering metals, ceramics and some undissolved metal intermediate compound powders in a vacuum and protective atmosphere, two processes are generally used to obtain materials with certain density and mechanical characteristics. That is, there is pressure sintering and pressureless sintering. The pressure sintering process is to place the powder material in a high-carbon mold in a vacuum and protective atmosphere, and apply pressure when heated to a softened state at high temperature. This process requires vacuum hot press sintering to achieve. This sintering furnace has the characteristics of high temperature, high vacuum degree and high hot pressing force.
High temperature sintering furnace is widely used in ceramics, silicon carbide, cemented carbide materials, lightness gold molding materials and graphite purification of vacuum sintering treatment, the use of vacuum sintering furnace to maintain to use longer time. If the mesh belt is a thimble belt, polish the thimble with sandpaper to prevent it from being scratched on the battery sheet. If it is an inclined mesh belt, bake at low speed under 100 speed to remove organic matter. After the fluorescent lamp is infected with organic matter, it should be scrubbed with alcohol cotton or non-woven fabric.
Cleaning work in the cavity (pay attention to whether the pores are unblocked). Organic pear and hot cleaning work (including factory work and equipment, equipment flexibility) please use alcohol to clean the organic matter in the equipment. When decomposing the sealing structure and vacuum system of the furnace, clean it with alcohol or gasoline, and apply vacuum oil for assembly after drying. If each actuator has the phenomenon of prohibition, control failure, stuck position, etc., it should be stopped immediately, do not force operation, so as not to damage the parts. After the vacuum sintering furnace is stopped, the vacuum degree below 66.5LPA shall be maintained in the furnace. Vacuum pumps, valves, measuring instruments, heat meters, electrical parts and other accessories should be used, maintained and managed according to the technical instructions of the product.
The repair work of the high-temperature sintering furnace must be carried out without electricity, and the maintenance must be carried out by professional maintenance personnel, while ensuring the absolute safety of the person and equipment. Vacuum sintering furnace aluminum plate spot welding machine mechanical transmission products should be regularly refueling or oil change maintenance.
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