A method for forming multi-component alloy grinding discs with coarse grains on the surface

Abstract

The invention discloses a forming method for a multi-element alloy abrasive disc with coarse particles on the surface. The forming method comprises the steps that metal particles and non-metal particles of different granularity are added into an appropriate adhesive according to different proportions to prepare a rack to be adhered to the surface of a casting mold cavity; and then metal liquids are poured at a high temperature, multi-element alloy particles and substrate metal are fused and permeated under the high-temperature action of the metal liquids, so that a hard multi-element alloy layer with relatively high impact resistance and high wear resistance is prepared on the surfaces of grinding teeth. According to the forming method, the multi-element alloy particles are fused and permeated with the substrate metal so that the hard multi-element alloy layer with the relatively high impact resistance and the high wear resistance can be prepared on the surfaces of the grinding teeth,and the surface of the abrasive disc rack is provided with certain coarse grains and micro-pores; and due to the fact that the surface of the abrasive disc rack is provided with the certain coarse grains and the micro-pores, in the pulping process, the friction force of the coarse grains and the micro-pores of the rack on fibers can be increased, and the fibrillation of the fibers and binding force between the fiber can be promoted.

Description

technical field [0001] The invention belongs to the field of grinding discs for refiners, and in particular relates to a forming method of multi-element alloy grinding discs with coarse grains on the surface. Background technique [0002] Papermaking tobacco sheet (reconstituted tobacco leaf by papermaking method) is a kind of tobacco product that uses tobacco stems, tobacco powder and other tobacco substances as the main raw materials, and draws on the principle of papermaking. It is a core process. [0003] The refiner is an important equipment in the production of paper-making tobacco sheets, and the refiner is the core component that directly performs multiple functions on the fiber raw materials when the refiner refines pulp (beating), and the refiner plays a key role in affecting the quality of the beating . "Three points for papermaking, seven points for beating", this view has been more and more consensus by people in the pulp and paper industry, and has also becom...

AI Technical Summary

Problems solved by technology

So far, the grinding discs used in practice are usually integrally cast with wear-resistant cast iron or alloy steel. Since the grinding discs are formed by one-time casting, the material is dense, the surface is smooth, lacks rough particles and pores, and lacks friction on fibers. , it is difficult to promote the fiber separation and the increase of the specific surface area. In order to increase the fiber specific surface area more, it will lead to a decrease in the drainage performance of the slurry and excessive cutting of the fiber, which will affect the average length of the fiber and the bonding strength, which will affect the Bulk, Absorbency and Strength of Paper-Made Tobacco Sheets

[0006] Existing grinding sheets cannot fully grind the tobacco stem particles, resulting in too many holes in the substrate

The surface of the abrasive material currently used in the industry at home and abroad is smooth, mainly relying on the edge of the abrasive rack to cut the fiber, the friction force is weak, it is difficult to obtain a good softness under the premise of a given bulk thickness of the film base, and it is also difficult to beat at a lower Promote the improvement of fiber specific surface area and bonding strength under the premise of high temperature

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