Grinding technique for forging non-corrodible steel knife

Abstract

The invention discloses a process for forging and grinding stainless steel, which comprises the following steps: (1) subjecting a cutter blank having a cross-section forged to taper shape; (2) primarily coarse-grinding a recessed arc surface at the middle part of a cutting tool by an edge formed by the end face and the circumference of a grinding wheel of a water mill machine; (3) secondarily coarse-grinding a blade edge by the end face of the grinding wheel of the water mill machine; (4) thirdly coarse-grinding the back of the cutting tool by the end face of the grinding wheel of the water mill machine; (5) primarily fine-grinding the recessed surface at the middle part of the cutting tool by the end face of a rubber grinding wheel of the water mill machine; (6) secondarily fine-grinding the blade edge by the end face of the rubber grinding wheel of the water mill machine; and (7) thirdly fine-grinding the back of the cutting tool by the end face of the grinding wheel. In the coarse grinding process, the temperature of the cutting tool is not larger than 200 DEG C, and the rigidity is unlikely to decrease after grinding. Compared with prior manual production, the mechanized process can ensure uniform surface lines, thickness and rigidity of the cutting tool, stable product quality, low rejection rate, simplified process, and greatly improved production efficiency.

Description

technical field [0001] The invention belongs to the processing and grinding technology of knives, in particular, it relates to a process of mechanized grinding with forged stainless steel knife blanks as raw materials. Background technique [0002] There are two kinds of knife blanks for processing and producing kitchen knives. One is stamped and sheared from stainless steel plates, and the other is stainless steel knife blanks formed by forging. The thickness of knife blanks formed by stamping and shearing stainless steel plates is consistent , during the process of smooth surface grinding, water mill mechanization can be carried out for a rough grinding and a fine grinding, high efficiency and large-scale mass production, beautiful appearance, stable product quality; the stainless steel knife blank formed by forging, through forging The carbide structure of the post-metal material is more uniform, the grain is finer, the distribution is more refined, the hardness is high, ...

AI Technical Summary

Problems solved by technology

However, compared with the plate knife blank, the forged knife blank has a concave arc surface in the middle of the knife, a tapered cross-section, and inconsistent thickness, so it cannot be mechanized with a water mill.

At present, the grinding process of forged stainless steel knives is manual grinding. First, the grinding wheel is roughly ground, and the person holds the knife blank and grinds it slowly on the rotating grinding wheel. Adding polishing paste for polishing, the process is cumbersome, and the whole forged stainless steel knife blank is in the process of manual grinding, because it is manually polished and there is no water spray cooling in the rough grinding stage of the grinding wheel, the temperature of the knife body is not easy to control, when the temperature of the knife blank is due to After the friction with the grinding wheel exceeds 400 degrees, the hardness of the knife blank will decrease and there will be more scrapped products