Grinding technique for forging non-corrodible steel knife

Abstract

The invention discloses a process for grinding a forged stainless steel knife. Step 1: heat-treating a knife blank with a tapered cross-section forged; Carry out the first step of rough grinding on the arc surface; step three, carry out the second step of rough grinding on the end face of the grinding wheel of the water mill; step four, carry out the third step of rough grinding on the end face of the blade of the water mill grinding wheel; The end face of the rubber grinding wheel of the water mill performs the first step of fine grinding on the concave surface in the middle of the cutter body; Step 6, the end face of the rubber grinding wheel of the water mill performs the second step of fine grinding on the cutting edge; Step 7, the rubber grinding wheel of the water mill The end face of the blade is subjected to the third step of fine grinding. In the present invention, the temperature of the knife blank will not exceed 200 degrees during the rough grinding process, and the hardness will not decrease after grinding; the previous manual production is changed to mechanized processing, and the texture, thickness and hardness of the knife on the outer surface remain consistent, and the product quality is stable. The scrap rate is low; the process is simplified and the production efficiency is greatly improved.

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