Siphon type degreasing and pre-sintering device

Abstract

The invention provides a siphon type degreasing and pre-sintering device, belonging to the field of a degreasing device of a powder metallurgy injection molding component. The siphon type degreasing and pre-sintering device comprises a furnace pipe platform with a group of empty-out pins, a furnace pipe, a furnace body, a catcher, a vacuumizing mechanism and a protection gas introducing pipe, wherein the furnace pipe platform is provided with a base of a disc body at the center towards the upward side under a use state; a vertical through hole is arranged on the base; a group of transverse through holes are arranged on the lateral face of the base around the circumference direction of the base; the furnace pipe is arranged on the furnace pipe platform; the furnace body is sleeved outside the furnace pipe; a group of electric heating rods are paved on the inner wall of the furnace body; the catcher is fixedly arranged at the center of one side of the furnace pipe platform; the vaccumizing mechanism is arranged at one side of the furnace body; one end of the protection gas introducing pipe extends into a furnace pipe cavity through the furnace pipe platform, and the other end of theprotection gas introducing pipe is connected with a protection gas source device; the furnace body is provided with a furnace cover; the furnace body forms a jacket; and the furnace cover forms a furnace cover jacket. The siphon type degreasing and pre-sintering device provided by the invention has the advantages that the degreasing speed can be improved; the siphon type degreasing and pre-sintering device is good for feeding and discharging; and the temperature uniformity in the furnace pipe cavity can be ensured during a degreasing and pre-sintering process.

Description

technical field [0001] The invention belongs to the technical field of degreasing devices for powder metallurgy injection molding parts, and in particular relates to a siphon type degreasing and pre-sintering device. Background technique [0002] Metal injection molding technology (Metal Injection Molding, referred to as MIM) is a technology that integrates plastic molding technology, polymer chemistry, powder metallurgy technology, and metal materials. Products with complex shapes can be sintered to manufacture structural parts with high density, high precision and three-dimensional complex shapes. This technology was first invented in the last century (1973) by Parmatech Corporation of California, USA, and was widely used in Europe, America and Japan in the early 1980s. This technology has the advantages of fewer process steps, no cutting or a small amount of cutting and high economic benefits, and can overcome the traditional powder metallurgy process of low density, une...

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Problems solved by technology

[0006]A typical example is the "vacuum degreasing and sintering integrated furnace" disclosed by the utility model patent authorization announcement number CN2595500Y. The technical effects mentioned in the 7th to 9th lines on page 2, but there are the following deficiencies: First, the degreasing speed is slow, because only the exhaust pipe protruding into the furnace body from the bottom of the furnace body (the patent is called the furnace body exhaust channel) It is difficult to lead the adhesive gas volatilized from the blank in the furnace out of the furnace under negative pressure; second, it is inconvenient to load the blank into the furnace and take out the finished product, and the patent does not provide technical inspiration for loading the blank into the furnace; Third, the structure of the furnace body is unreasonable and inconvenient to clean, because during use, especially in the process of loading the blank into the furnace, there will inevitably be damage to the blank, and if it cannot be cleaned in time, it will affect subsequent use; Fourth, It is difficult to ensure the overall uniformity of temperature during the debinding process and during the pre-sintering process, thus affecting the quality of the product

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