Alloy material for high-strength steel pull rod and treatment technology thereof

Abstract

The invention discloses an alloy material for a high-strength steel pull rod and a treatment technology thereof. A nickel element is added; the strength and the toughness of the steel pull rod are improved; the hardenability and the corrosion resistance are improved; the atomic activities of a C element and an N element are improved so that an air mass formed by each atom can form a strong interaction with dislocation. Meanwhile, in the treatment process, a vacuum degasification furnace is used for performing degasification; die casting is protected by argon gas so that an air hole is avoided in a product and the quality of the product is further improved. The alloy material for the high-strength steel pull rod and the treatment technology thereof designed by the invention overcome the defect of the prior art and have the advantages of high strength, no pollution, good hardenability, difficulty to crack and low looseness.

Description

technical field [0001] The invention relates to an alloy material for a high-strength steel tie rod and a treatment process thereof. Background technique [0002] At present, the application of valves plays a key role in many fields. Because the use environment of steel tie rods is affected by its material, and steel tie rods also have defects, such as: low abrasion resistance, poor high temperature resistance, low strength, and long service life. Short, etc., due to the low yield strength of the steel tie rods, the steel tie rods are often bent and deformed by artificial live loads during the construction process, which cannot meet the structural limitations of the reinforced concrete protection thickness and cause cracks, resulting in hidden dangers to project quality. [0003] In the prior art, the atomic activity of carbon and nitrogen elements in the steel raw material composition is low, and the air mass formed by each atom cannot form a strong interaction with the dis...

AI Technical Summary

Problems solved by technology

[0002]At present, the application of valves plays a key role in many fields, because the use environment of steel tie rods is affected by its material, and steel tie rods also have defects, such as: resistance Low friction ability, poor high temperature resistance, low strength, short service life, etc. Due to the low yield strength of steel tie rods, they are often subjected to artificial active loads during construction, which often cause steel tie rods to bend and deform under force, which cannot meet the requirements of reinforced concrete. Cracks are generated due to the structural limitation of the protection thickness, which causes hidden dangers in the quality of the project

[0003]In the prior art, the atomic activity of carbon and nitrogen elements in steel raw materials is low, and the air masses formed by each atom cannot form strong interactions with dislocations. Dislocations can be activated without providing a large stress, so that the performance is very unstable. At the same time, the hydrogen content in the steel tie rod forging blank is above 2.0ppm, and the steel tie rod forging blank is prone to cracks, which induces hydrogen-induced cracks and hydrogen-induced delayed cracks.