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Fastener manufacturing method

A fastener manufacturing and fastener technology, applied in the direction of solid diffusion coating, coating, process efficiency improvement, etc., can solve the problems of inability to adapt to the working environment, small scope of application, poor performance, etc.

Pending Publication Date: 2022-08-02
LIZHOU HARDWARE SPRING XIAMEN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The current fastener products have poor performance and cannot adapt to various working environments, resulting in a small scope of application

Method used

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Experimental program
Comparison scheme
Effect test

specific Embodiment approach

[0038] The alloy raw materials are sent to the electric furnace for melting and smelting, and when the molten steel temperature in the electric furnace reaches 1800 ℃, the slag-forming agent is used for slagging. Calcium oxide, silicon dioxide, magnesium oxide, aluminum oxide and aluminum powder are mixed in a mass ratio of 14:4:1:5:2, and the bottom blowing gas is blown into the furnace through a nozzle placed at the bottom of the furnace , the bottom blowing gas is CH 4 , and CH 4 The flow is 0.55m 3 / s, then stir the molten steel for preliminary smelting, and send the molten molten steel completed in the preliminary smelting into the vacuum kettle for degassing and desulfurization treatment to remove the inclusions in the molten steel. The aluminum is deoxidized, and the ratio of aluminum to molten steel added in the deoxidation process is 3:5000, and the deoxidized molten steel is poured into a mold to obtain a steel ingot;

[0039] The steel ingot is heated to 1450°C, ...

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Abstract

The invention relates to the technical field of fastener manufacturing, in particular to a fastener manufacturing method which comprises the following steps: S1, feeding an alloy raw material into an electric furnace for melting and smelting, slagging by adopting a slagging agent when the temperature of molten steel in the electric furnace reaches 1750-1800 DEG C, blowing bottom blowing gas into the furnace through a nozzle arranged at the bottom of the furnace, stirring the molten steel for primary smelting, molten steel obtained after primary smelting is completed is fed into a vacuum kettle to be subjected to degassing and desulfurization treatment, inclusions in the molten steel are removed, tapping is conducted when the temperature of the molten steel is increased to 1350-1380 DEG C, aluminum is added in the tapping process for deoxidation, the deoxidized molten steel is poured into a mold, and a steel ingot is obtained; and S2, the steel ingot is heated to 1420-1450 DEG C, heat preservation is conducted for 25 h, then the steel ingot is put into an upsetting mold, and the steel ingot is made to form the shape and size needed by the fastener through upsetting force. The problems that an existing fastener product is poor in performance and cannot adapt to various working environments, and consequently the application range of the fastener product is small can be effectively solved.

Description

technical field [0001] The invention relates to the technical field of fastener manufacturing, in particular to a fastener manufacturing method. Background technique [0002] Fasteners are a type of mechanical parts used for fastening connections and are widely used. Fasteners are widely used in various industries, including energy, electronics, electrical appliances, machinery, chemicals, metallurgy, molds, hydraulics and other industries. All kinds of fasteners can be seen on all kinds of machinery, equipment, vehicles, ships, railways, bridges, buildings, structures, tools, instruments, chemicals, instruments and supplies, etc., which are the most widely used mechanical foundation parts. , it is characterized by a wide variety of specifications, different performance uses, and a very high degree of standardization, serialization, and generalization. Therefore, some people call a type of fasteners with national standards as standard fasteners. Or simply referred to as sta...

Claims

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Application Information

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IPC IPC(8): C22C33/04C23C8/66C23C22/73C23C22/78C23G1/19C25D5/14C25D5/36C21C7/06C21C7/064C21C7/10C21D1/00C21D1/18B23P15/00
CPCC22C33/04C21C7/10C21C7/064C21C7/06C21D1/00C21D1/18C23C8/66C23G1/19C25D5/14C25D5/36C23C22/73C23C22/78B23P15/00Y02P10/20
Inventor 王亮王俊
Owner LIZHOU HARDWARE SPRING XIAMEN
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