Alloy steel nut connecting piece and preparation method thereof

Abstract

The invention discloses an alloy steel nut connecting piece. The alloy steel nut connecting piece is characterized by being prepared from, by weight percent, 0.55%-0.65% of magnesium, 1.25%-1.3% of manganese, 2.1%-2.2% of chromium, 0.7%-0.75% of silicon, 1.22%-1.35% of carbon, 0.4%-0.45% of copper, 0.02%-0.06% of titanium, 0.15%-0.20% of tungsten, 0.6%-0.9% of molybdenum, 0.4%-0.6% of niobium, 0.03%-0.05% of cobalt, 0.02%-0.05% of scandium, 0.002%-0.006% of polonium and 20%-25% of a refining slag regulating agent. According to the alloy steel nut connecting piece, casting quality is improved, and mechanical performance, corrosion resistance and oxidation resistance are good.

Description

technical field [0001] The invention relates to the field of machining of mechanical parts, in particular to an alloy steel nut connector and a preparation method thereof. Background technique [0002] A nut is a nut, a part that is screwed together with a bolt or a screw for fastening. A component that must be used in all manufacturing machinery is divided into carbon steel, stainless steel, and non-ferrous metals (such as copper) according to different materials. several types. For example: self-locking nuts, anti-loosening nuts, lock nuts, four-claw nuts, nuts, nuts, screw-in nuts, safety nuts, thin rod screw connection nuts, self-locking hexagon cap nuts, nuts for special anchor screws, hexagonal crown nuts Thin nuts, eye nuts. The main operation method of the embedded knurled copper nut is injection molding. After heating, it is embedded into the plastic part or directly molded. If mold injection is used, the melting point of PA / NYLOY / PET is above 200°C, and the embed...

AI Technical Summary

Problems solved by technology

The molten steel treated with the refining and slagging agent contains very low sulfur, oxygen and inclusions, but the refining and slagging agent in the document has few types of ingredients, and the preparation method is simple, so it is difficult to achieve the desired effect, and the method is single, and It does not point out the scheme of combining with other processing methods, nor does it point out the complete supporting technical scheme of its subsequent mechanical casting and processing technology. This paper combines the existing technology to give a complete processing technology to improve the overall mechanical properties of nuts.