Method for pre-coating self-lubricating high-strength bolt for wind power generation host
A high-strength bolt, pre-coating technology, applied in the direction of screws, mechanical equipment, threaded fasteners, etc., can solve problems such as harming the safety of wind turbines, affecting the quality of bolted joint assembly, and reducing the service life of wind turbines.
Inactive Publication Date: 2012-12-26
SHANGHAI SHENGUANG HIGH STRENGTH BOLTS
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AI Technical Summary
Problems solved by technology
The change of the axial pre-tightening force of the bolt affects the assembly quality of the bolt connection pair, reduces the service life of the wind turbine, and in severe cases, will affect the safety of the wind turbine
Method used
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Experimental program
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Embodiment Construction
[0011] Below in conjunction with specific embodiment the present invention is described in further detail:
[0012] The present invention is realized through the following steps:
[0013] The subject of the present invention comprises a hex head bolt and a washer;
[0014] The bolts are prepared, formed, heat treated, ground, rolled, surface treated and coated with a torque coefficient stabilizer; wherein the coated torque coefficient stabilizer is: dry solid The thin film lubricant is prepared as a torque coefficient stabilizer in a weight ratio of 1:3 and stirred evenly, then the bolts are dipped in the solution, and centrifuged at 190-210rad / min for 18-22s, and then baked and solidified. The temperature is 48-52°C, and the time is 48-52min;
[0015] The gasket is prepared, stamped and formed, heat treated, turned (inner hole chamfering), surface treated, and coated with a torque coefficient stabilizer; wherein the coated torque coefficient stabilizer is: dry The formula ...
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The invention relates to a method for pre-coating a self-lubricating high-strength bolt for a wind power generation host. The method is achieved by the following steps of: preparing materials for a bolt, molding, thermal treatment, grinding an embryo diameter, thread rolling, carrying out surface treatment, coating a torque coefficient stabilizer, and the like, wherein the step of coating the torque coefficient stabilizer comprises the processes of: taking a dry solid film lubricating agent produced by the Gleitmo company as the torque coefficient stabilizer to prepare and uniformly agitate to form a solution according to the weight ratio of 1 to 3, putting the bolt into the solution to be dipped, carrying out centrifugation at 190-210rad / min for 18-22 seconds, and baking and curing treatment under the temperature of 48-52 DEG C for 48-52min; and preparing the material for a gasket, stamping and forming, carrying out thermal treatment, turning and surface treatment, and coating the torque coefficient stabilizer, wherein the step of coating the torque coefficient stabilizer comprises the processes of: taking the dry solid film lubricating agent produced by the Gleitmo company as the torque coefficient stabilizer to prepare a solution according to the weight ratio of 1 to 5, putting the gasket into the solution to be dipped, and baking and curing treatment under the temperature of 58-60 DEG C for 38-40min.
Description
technical field [0001] The invention relates to a high-strength bolt for a wind power generator host, in particular to a method for pre-coating self-lubricating high-strength bolts for a wind power generator host. Background technique [0002] Wind turbines are composed of blades, transmission systems, generators, energy storage equipment, towers and electrical systems. The main engine includes the nacelle, hub, gearbox, generator, yaw device, etc." "The main engine of the wind turbine is the core of the wind turbine and is a key part. ""Strength bolts for wind power main engine are used for the internal connection of gearboxes, generators, yaw devices and other assemblies and the external connections between the assembly and the nacelle and hub. [0003] The thread diameter of the high-strength bolts used for the main engine of the wind turbine is relatively wide, generally M8-M48, the mechanical performance grade is 8.8-10.9, and the surface treatment is usually zinc-alum...
Claims
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IPC IPC(8): F16B35/00
Inventor 顾青丽张德利张宝根祝其高
Owner SHANGHAI SHENGUANG HIGH STRENGTH BOLTS