Method for producing magnetic steel molding product by full-automatic wet process and molding machinery thereof

Abstract

The invention discloses a full-automatic wet method for producing magnetic steel molded products and molding equipment thereof, pertaining to the field of production methods of the magnetic steel molded products. The method of the invention comprises the steps of preparing slurry, pressing and molding a green body, sintering the green body to a rough cast and post-processing the rough cast to form a product, etc. In the steps of pressing and molding the green body, the equipment using the method of the invention is adopted to independently control the ascending movement and descending movement of a mold cavity so as to cause the mold cavity to do ascending movement relative to a core bar, thereby providing a feeding space; the center of the core bar is provided with a feeding hole, a feeding port at the lower part of the feeding hole is communicated with a feed bin and the slurry is fed from an opening at the top part of the feeding hole to a material containing space; after the completion of the feeding, the mold cavity is fast controlled to return to a position which is parallel to the top part of the core bar, and then pressed, after pressing, a mould is opened, an upper oil cylinder and a lower oil cylinder return in sequence. The lower oil cylinder returns and drives the mold cavity and the core bar descends to the same plane with a punch simultaneously. The green body isdemolded. The full-automatic wet method of the invention greatly shortens the time of pressing and molding, reduces energy consumption, greatly improves production efficiency and reduces the labor intensity of workers.

Description

technical field [0001] The invention discloses a method for fully automatic wet production of magnetic steel formed products and a forming machine tool thereof, belonging to the field of production methods of magnetic steel formed products, and specifically relates to a wet method for producing magnetic steel formed products and a forming machine tool thereof. Background technique [0002] The current method for producing magnetic steel molded products by wet method includes the following process steps: 1. Preparation of slurry; 2. Pressing and forming a green body; 3. Sintering the green body into a blank; 4. Processing the blank into a product. Now introduce as follows [0003] 1. Preparation of slurry: [0004] Select the appropriate ferric oxide powder and rare earth metal to mix and roast, grind it into ferrite pre-sintered material, use a ball mill to add water to grind to 0.8---1 micron, and filter the ground slurry with a filter tank until the water content is 35 %...

AI Technical Summary

Problems solved by technology

The fundamental defect of this automatic press-molded product is that the feeding mode of this molding die is the feed inlet feeding that the inwall of molding die cavity is provided with, that is, the side wall feeding of the material holding space that is formed by cavity (as shown in Figure 3 As shown), such a feeding method will inevitably lead to difficulties in setting the sealing ring. If the sealing ring is designed to seal the material above the feeding port, although it is theoretically feasible, when the sealing ring passes through the feeding port, it will be cut by the feeding port. If the sealing ring is designed to seal the material under the feed port, under high pressure, the raw material will leak along the feed port. Once the raw material leaks, the product will inevitably crack or crack during sintering , forming waste

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