Sintering equipment for cubic boron nitride sintered body and sintering method thereof
A technology of cubic boron nitride and sintering equipment, applied in the field of material processing, can solve the problems affecting the yield of cubic boron nitride sintered body, uneven thermal field, uneven heating of raw materials, etc., so as to avoid sudden changes and improve heating uniformity. , the effect of improving uniformity
Inactive Publication Date: 2019-02-19
MUDANJIANG NORMAL UNIV
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Problems solved by technology
However, during the heating and sintering process of the existing sintering furnace, due to the uneven thermal field in the sintering boat, the raw materials are heated unevenly, which affects the yield of the cubic boron nitride sintered body
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[0029] The standard parts used in the present invention can be purchased from the market, and the special-shaped parts can be customized according to the instructions and the accompanying drawings. The specific connection methods of each part adopt mature bolts, rivets, welding in the prior art , pasting and other conventional means, no longer described in detail here.
[0030] refer to Figure 1-6 , a specific embodiment of the present invention comprises a furnace body 1, a burning boat 3 is installed through a bracket 2 in the furnace body 1, and an air inlet 4, an exhaust port 5 and a vacuum suction port 6 are arranged on the furnace body 1; 3 is provided with a hemispherical accommodating cavity 7, on the inner wall of the hemispherical accommodating cavity 7 are fixed several concentrically arranged annular baffles 8, and on the annular baffles 8 are evenly provided with several through first slits 9, the furnace body 1 The outside is provided with a cylinder 10, and th...
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The invention discloses sintering equipment for a cubic boron nitride sintered body. The sintering equipment comprises a furnace body, a burning boat is arranged in the furnace body through a support,a hemispherical containing cavity is formed in the burning boat, a plurality of annular baffles which are concentrically arranged are fixed on the inner wall of the hemispherical containing cavity, aplurality of through first slits are uniformly formed in each annular baffle, an air cylinder is arranged on the outer side of the furnace body, the air cylinder is connected with a stirring head through a graphite rod, the stirring head comprises a plurality of conical inserting sheets which are concentrically arranged, the diameters of the bottom edges of the conical inserting pieces are largerthan the diameters of the top edges, a plurality of side plates are fixed on the outer side wall of each conical inserting piece, second through slits are formed in the side plates, a first electricheating wire is installed in the burning boat, second electric heating wires are arranged in the annular baffles, third electric heating wires are installed in the conical inserting pieces, and a cooling coil pipe is arranged in the burning boat. According to the sintering equipment, the defects in the prior art can be overcome, the heating uniformity of sintered raw materials is improved, and theyield of the cubic boron nitride sintered body is improved.
Description
technical field [0001] The invention relates to the technical field of material processing, in particular to a sintering device for a cubic boron nitride sintered body and a sintering method thereof. Background technique [0002] Cubic boron nitride (cBN) is a high-hardness substance second only to diamond. It is widely used in various cutting processes due to its low affinity for iron-based materials. In the prior art, cubic boron nitride is usually prepared through a high temperature and high pressure sintering process. However, during the heating and sintering process of the existing sintering furnace, due to the uneven thermal field in the sintering boat, the raw materials are heated unevenly, which affects the yield of the cubic boron nitride sintered body. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a sintering equipment and a sintering method for cubic boron nitride sintered bodies, which improves the...
Claims
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Inventor 吴春雷王方标孙明烨
Owner MUDANJIANG NORMAL UNIV