Processing method for hollow anchor rod

Abstract

The invention provides a processing method for a hollow anchor rod. Materials and devices used for processing the hollow anchor rod comprise hot rolled seamless round steel, a super-audio induction heater, a perforating device, a rolling device, a spraying device and a heat treatment device, the processing method for the hollow anchor rod comprises the following steps of: putting the hot rolled seamless round steel in the super-audio induction heater to be heated, putting the hot rolled seamless round steel in the perforating device to be perforated after further heating, and then carrying outthermal insulation treatment, and cooling the hot rolled seamless round steel after thermal insulation treatment; after cooling, putting the perforated hot rolled round steel into the rolling devicefor deformation treatment and pressing into a thread shape; after pressing and rolling, sending the hot rolled round steel into the spraying device for continuous spraying to ensure uniform spraying of the perforated hot rolled round steel; and finally, putting the perforated hot rolled round steel into the thermal treatment device for thermal treatment to obtain a finished product. The hollow anchor rod manufactured by the invention has low cost, improves the surface hardness after being sprayed by the spraying device, and has higher strength and higher elongation after thermal treatment.

Description

technical field [0001] The invention belongs to the technical field of hollow anchor rod processing methods, and in particular relates to a hollow anchor rod processing method. Background technique [0002] With the continuous development of my country's railway transportation industry, especially the increasingly popular elevated railway, the requirements for the acceptance of its foundation projects are getting higher and higher, so the quality of various engineering materials is also put forward higher requirements, my country's current Higher requirements are put forward in railway standards for mechanical properties such as tensile capacity and elongation of hollow anchors. For example, the hollow anchors exemplified in railway standards use a wall thickness of 7 mm and 3.14 kg per meter. The hot-rolled production method of anchor bolts can only meet the strength requirements in railway standards, which can only be achieved by increasing the amount of steel, that is, usin...

AI Technical Summary

Problems solved by technology

[0002] With the continuous development of my country's railway transportation industry, especially the increasingly popular elevated railway, the requirements for the acceptance of its foundation projects are getting higher and higher, so the quality of various engineering materials is also put forward higher requirements, my country's current Higher requirements are put forward in railway standards for mechanical properties such as tensile capacity and elongation of hollow anchors. For example, the hollow anchors exemplified in railway standards use a wall thickness of 7 mm and 3.14 kg per meter. The hot-rolled production method of anchor bolts can only meet the strength requirements in railway standards, which can only be achieved by increasing the amount of steel, that is, using thicker steel pipes as hot-rolled raw materials. Although the anchor bolts produced in this way It meets the mechanical properties stipulated in the railway standard, but the internal space is small due to the increase of the wall thickness of the hollow anchor, which affects its performance, making it difficult to grout from the inside of the hollow anchor, and the grouting pressure The attenuation loss is huge, and at the same time, the wall thickness of the hollow anchor is blindly increased to ensure the strength of the hollow anchor, which also causes a lot of waste of steel.

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