Sintering process method applicable to low-pressure bead sintering of double furnace

Abstract

The invention discloses a sintering process method applicable to low-pressure bead sintering of a double furnace. The implementation scheme includes that heat-compensating temperature-control heatingmodules are arranged at upper, middle and lower positions in the center of a combustion chamber of the double furnace, to-be-sintered beads are placed and accumulated around the upper, middle and lower heat-compensating temperature-control heating modules to form triangular, quadrangular or annular bead accumulation areas which are heated and sintered by the upper, middle and lower heat-compensating temperature-control heating modules and original upper, middle and lower furnace temperature control heating modules in the furnace wall of the double furnace, and accordingly uniformity of internal and external heating temperature of the bead accumulation areas is guaranteed. Changing of an original process is avoided, a temperature control system automatically controls uniformity of the internal and external temperatures of the bead accumulation areas in sintering in the furnace, and accordingly temperature uniformity of each furnace portion in a sintering process is realized, and bead sintering quality is guaranteed.

Description

technical field [0001] The invention relates to a production method of diamond beads, in particular to a sintering process suitable for low-pressure sintering beads in a double-body furnace. Background technique [0002] As a flexible cutting tool, diamond wire saw is widely used in stone mining and processing, and diamond bead is the core component of diamond wire saw. Using double furnace for low pressure or pressureless sintering is an emerging diamond bead production process. [0003] When the conventional two-body furnace is sintering beads, only the furnace wall generates heat, and the beads in the furnace are heated by radiation and air convection. At this time, the sintered beads close to the furnace wall are directly radiated by the furnace wall heat, and because there is no heat source in the center of the furnace, only Through the heat conduction of the sintered beaded container and the slight air convection heating in the furnace, the temperature difference betw...

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Problems solved by technology

[0003] When the conventional two-body furnace is sintering beads, only the furnace wall generates heat, and the beads in the furnace are heated by radiation and air convection. At this time, the sintered beads close to the furnace wall are directly radiated by the furnace wall heat, and because there is no heat source in the center of the furnace, only Through the heat conduction of the sintered beaded container and the slight air convection heating in the furnace, the temperature difference between the position near the furnace wall and the central position of the furnace is very large (the temperature difference exceeds 50°C), resulting in inconsistent beading heating curves, and the physical properties of the beading matrix are greatly affected. Large impact, final bead quality fluctuates widely

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