Processing method of anti-collision long screw of galvanic pile

Abstract

The invention provides a processing method of an anti-collision long screw of a galvanic pile, which is characterized by comprising the steps of straightening by a stock cutter and then cutting to obtain a screw blank with a preset length; machining an inner quincuncial groove in one end of the screw blank in a cold heading mode through a mold closing machine; trimming the outer diameters of the screw at the two ends through a machining process; carrying out thermal refining on the screw blank subjected to outer diameter trimming so as to obtain a workpiece with a corresponding strength grade; straightening the workpiece through a straightening machine so as to enable the straightness of the workpiece to be within 0.5; performing thread machining on the solid rod end of the workpiece through a thread rolling machine, and performing thread machining on the quincuncial groove end of the workpiece through a thread rolling machine; conducting zinc plating on the surface of the workpiece subjected to thread machining through a rack plating technology; and carrying out black electrophoresis treatment on the workpiece by adopting an electrophoresis process.

Description

technical field [0001] The invention relates to a processing method for a long anti-collision screw of an electric stack. Background technique [0002] The battery pack or fuel cell is referred to as the stack. Now some energy is not used for direct combustion, but a new science and technology, which is called fuel cell or stack. Electricity is obtained through chemical reaction. It is to pass hydrogen gas in, through the oxygen in the air, and generate electricity through chemical reaction. The by-product is pure water, of course there is no pollution, and there are no moving parts and no noise pollution. The stack is the core component of hydrogen energy. [0003] The anti-collision long screw in the stack mainly plays the roles of fastening, anti-collision and insulation. However, the processes on the market are difficult to meet the requirements for long screw processing, the reasons are as follows: [0004] One is the long length: usually more than 500mm, in terms o...

AI Technical Summary

Problems solved by technology

The quenching and tempering treatment is traditionally processed in a continuous mesh belt furnace, which is limited by the width of the mesh belt furnace. Usually, the length of the processed workpiece is required to be no more than 400mm long, so it cannot meet the screw of 500mm or more in this case;

[0006] The third is straightness requirements: the technology on the market is processing long screws, which are prone to bending due to the influence of elastic deformation of metal materials; especially the screw has strength requirements, which need to be heat-treated and tempered, and the degree of bending deformation is intensified. Often the straightness exceeds 1.0, so it cannot meet the requirement of straightness within 0.5 in this case;

[0007] Fourth, anti-corrosion requirements: Usually, the electrophoresis process can only guarantee 48 hours of salt spray time, and it is difficult to reach 480 hours

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