High-temperature-resistant high-performance alloyed fastener and manufacturing technique thereof

Abstract

The invention provides a high-temperature-resistant high-performance alloyed fastener comprising following ingredients: 0.42% of C, 0.33% of Si, 0.70% of Mn, 0.030% or less of S, 0.030% or less of P, 1.10% of Cr, 0.025% or less of Ni, 0.025% or less of Cu, 0.20% of Mo, 0.24% of V, and 0.03% of Nb. The invention also provides a manufacturing technique used for production of the alloyed fastener. The manufacturing technique of the high-temperature-resistant high-performance alloyed fastener helps to solve a problem that: manufacturing techniques used for production of alloyed fasteners with a level of 12.9 or above have not been invented in domestic at present. The alloyed fastener produced by the manufacturing technique possesses high strength and hardness which are not possessed by common fasteners, and excellent plasticity, toughness, corrosion resistance, tensile strength, fatigue strength and delayed fracture resistance. The alloyed fastener is capable of ensuring that failures such as break and damage are not easy to happen in manufacturing process and using procedures, and can function normally at a highest temperature of 500 DEG C. Service life of the fastener is extremely prolonged.

Description

technical field [0001] The invention belongs to the field of metal machining, and relates to a high-temperature-resistant high-performance alloy fastener and a production process thereof. Background technique [0002] With the continuous advancement of my country's revitalization of the equipment manufacturing industry, the speed of industrial upgrading is accelerating, and the integration of my country's fastener industry with the economies of other countries is accelerating. high demands. [0003] my country joined the WTO in 2001 and entered the ranks of international trade powers. A large number of fastener products are exported to countries all over the world, and fastener products from all over the world are also pouring into the Chinese market. As one of the products with a large import and export volume in my country, fasteners are in line with international standards, which is of great significance and significance for promoting Chinese fastener companies to go glob...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a high-temperature-resistant high-performance alloy fastener and its production process to solve the problem that the production process in the field of fasteners in China is backward and the strength of the fastener cannot reach 12.9 or above.