Hearth heating device of mim sintering furnace

Abstract

The invention discloses a hearth heating device of an MIM sintering furnace, and belongs to the technical field of kiln facilities. The hearth heating device comprises a feeding conveyer, a rubber removal furnace body, a high-temperature sintering furnace body, a low-temperature sintering furnace body and a cooling furnace body, wherein a low-temperature sintering furnace hearth is formed by enclosure of a low-temperature sintering furnace bottom lining, front and back furnace wall linings of the low-temperature sintering furnace and a low-temperature sintering furnace top lining; a high-temperature sintering furnace hearth is formed by enclosure of a high-temperature sintering furnace bottom lining, front and rear furnace wall linings of the high-temperature sintering furnace and a high-temperature sintering furnace top lining; the hearth heating device comprises a group of high-temperature sintering furnace molybdenum wire heating mechanisms and a group of low-temperature sintering furnace molybdenum wire heating mechanisms; the group of low-temperature sintering furnace molybdenum wire heating mechanisms is arranged at one side, toward the low-temperature sintering furnace hearth, of the front and back furnace wall linings of the low-temperature sintering furnace, and is connected with an external power supply; and the group of high-temperature sintering furnace molybdenum wire heating mechanisms is arranged at one side, toward the high-temperature sintering furnace hearth, of the high-temperature sintering furnace bottom lining, the front and rear furnace wall linings of the high-temperature sintering furnace and the high-temperature sintering furnace top lining, and is connected with an external power supply. The uniformity of the hearth heating temperature is ensured; and the sintering quality requirements are met.

Description

technical field [0001] The invention belongs to the technical field of kiln facilities, and in particular relates to a hearth heating device of an MIM sintering furnace. Background technique [0002] The aforementioned MIM sintering furnace essentially refers to the MIM workpiece sintering furnace, that is, the MIM product sintering furnace (hereinafter the same), MIM technology refers to the metal powder injection molding technology, MIM is an English abbreviation, and the full English name is: Metal injectionMolding. As a near-net-shaping technology for manufacturing high-quality precision parts, MIM technology has advantages that cannot be compared with conventional powder metallurgy, machining and casting methods. The specific performance is: it can produce small metals with complex shapes like plastic products The weight of parts is as small as 0.1g and as large as 500g or even larger. Typical shells of high-end mobile phones (iPhone 6 and iphone 7, etc.) are generally ...

AI Technical Summary

Problems solved by technology

Installing heating elements on both sides of the length direction of the furnace in the form of a plate has at least the following disadvantages: one is that the cost of the heating elements is high, so it is uneconomical; Therefore, the uniformity of the furnace temperature is more stringent, and the heating elements located on both sides of the furnace are not enough to make the temperature in the middle area of ​​the top and bottom of the furnace tend to be consistent with the temperature near the two side walls of the furnace, that is Furnace temperature appears yin and yang, which eventually leads to uneven heating of MIM workpieces and affects the sintering quality

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