Machining method for wind-power ground anchor bolt

Abstract

The invention discloses a machining method for a wind-power ground anchor bolt. The machining method comprises the following steps that a, hardening and tempering heat treatment is conducted on an alloy steel bar according to technical requirements; b, threads are prepared at the two ends of the alloy steel bar after being subjected to heat treatment according to size requirements; c, anticorrosion treatment is conducted on the alloy steel bar with the threads; and d, a corresponding nut and a gasket which are matched according to requirements are assembled, and the required wind-power groundanchor bolt (1) is obtained. According to the machining method for the wind-power ground anchor bolt, possible deformation caused in the machining process is avoided, thermal stress in the bar is reduced, the service life of the bolt is improved, and finally, further protective measures to the bolt are taken.

Description

Technical field: [0001] The invention relates to a processing method of metal parts, in particular to a processing method of bolts used for installation and use in wind-driven motors. Background technique: [0002] With the extensive use of clean energy, the installed capacity of wind turbines has developed rapidly. The volume of wind turbines is huge and the installation accuracy is very high. Due to the huge weight of wind turbines (including multiple blades), a large number of high-strength The bolts are used to install the wind turbine on the foundation, and the wind turbine is installed at a very high position. It is necessary to install the wind turbine in place as soon as possible, which requires that the bolts not only have high strength but also high precision, so that Install a large number of bolts in place in less time. Existing technology The current production process of wind power ground anchor bolts is not substantially different from that of conventional bo...

AI Technical Summary

Problems solved by technology

Due to the high temperature during heat treatment and the subsequent corresponding process of the wind power ground anchor bolts prepared by the above-mentioned prior art, the threaded bolt body will have certain deformation and damage to the thread, which will reduce the accuracy of the bolts and cause wind turbines to be installed. Increase the installation time, or even temporarily replace the bolts with substandard precision, resulting in waste. The key point will also affect the uneven strength of a large number of bolts and greatly increase the time for installing wind turbines. Probability of dangerous accidents when working at heights

The way to solve the above-mentioned accuracy problem in the prior art is to reduce the temperature of heat treatment to reduce deformation, and on the other hand, increase the diameter of the bolt body to compensate for the decrease in strength caused by heat treatment. In summary, the cost of wind power ground anchor bolts increases while the quality is still low. there is a certain decline

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