Meaning and principle of graphite boat

Meaning and principle of graphite boat

Meaning of graphite boat:
     The graphite boat dish is a groove mold, which comprises a plurality of W-shaped two-way inclined grooves with opposite two groove surfaces and bottom support protrusions, a bottom surface, an upper end face, an inner surface, an outer side and a stop opposite to the upper end face. At least one exhaust through groove is designed on the opposite two groove surfaces respectively, A corner protection groove is respectively designed at the intersection of the bottom support protrusion and the two opposite groove surfaces. On the bottom surface, the lower part of the protrusion formed by any two adjacent W-type two-way inclined grooves is designed with a through groove parallel to the W-type two-way inclined groove and the cross-section shape is approximately V-shaped. The utility model enables the cemented carbide strip and sheet products to be evenly degummed in the process of hydrogen degumming and vacuum sintering, so as to avoid the of product warping and deformation, large product loading and less consumables.

Principle of graphite boat:
     The graphite boat dish comprises a boat dish body, a cushion block and a positioning pin with a certain taper arranged on one side, such as a dry loading rod groove W. the two ends of the boat dish body parallel to the loading rod groove W are respectively provided with grooves, the boss at the lower end of the cushion block is matched with the groove, and the positioning pin passes through the positioning hole in the middle of the groove and the positioning hole in the middle of the boss at the lower end of the cushion block; The distance from the bottom of the rod carrying groove w to the bottom surface of the boat body, the distance from the top to the bottom table of the boat body, the distance from the top surface of the cushion block to its upper convex table, and the distance from the top surface of the cushion block matched with the boat body to the bottom table of the boat body are 2.0-8mm, 3-16mm, 3.8-12mm and 6.8-28mm respectively; The slot spacing, slot bottom width, slot height and included angle of rod loading slot W are 2.6-12.4 mm, 0.2-3 mm, 1.2-9 mm and 50 ° – 60 ° respectively; The utility model not only improves the single furnace output of the sintering furnace, prolongs the actual service life of the boat dish, but also saves the boat dish material.