The phenomenon of light voltage discharge in loose contact between the on-line electrode and the workpiece during slow wire processing. When the flexible electrode wire and the workpiece close to the commonly considered discharge gap, the spark discharge does not occur, only when the workpiece electrode wire top bent and offset a certain distance, normal spark discharge occurs. Next, I will introduce you to what slow walking wire is and the content of slow walking wire processing. Welcome to read!

What is slow-walking wire?

Slow wire is a kind of electric fire wire cutting, English abbreviation for WEDM-LS. Also known as low-speed wire walking, is the use of continuous motion of the metal wire as the electrode, pulse discharge on the workpiece, can produce more than 6000 degrees of high temperature, corrosion metal, cutting into the workpiece of CNC machine tools.

It is a continuous motion of the metal wire (called electrode wire) as the electrode, pulse spark discharge on the workpiece corrosion metal, cutting molding. Used for processing a variety of complex shapes, fine precision workpiece, according to the different running speed, EDM machine tools can usually be divided into two categories: one is slow wire (also known as low speed wire EDM machine), wire electrode for low speed wire, generally wire speed is less than 0.2m/s, the accuracy of 0.001mm. The electrode wire is no longer used after discharge, the work is stable and uniform, the jitter is small, and the processing quality is better. And the use of advanced power technology, to achieve high-speed processing, productivity up to 350mm2/min.

Because the slow wire cutting machine adopts the wire electrode continuous wire supply, that is, the wire electrode completes the processing in the process of motion, so even if the wire electrode loss, it can be continuously supplemented, so as to improve the machining accuracy of parts. The surface roughness of the workpiece processed by the slow wire cutting machine can generally reach Ra=0.8μm and above. The roundness error, straight line error and size error of the slow wire cutting machine are better than that of the slow wire cutting machine. Therefore, the slow wire cutting machine is widely used in the processing of high-precision parts.

The role of slow wire processing:

1, slow wire is the use of continuous motion of metal wire (also known as electrode wire, generally copper wire and molybdenum wire) as the electrode, pulse spark discharge on the workpiece, can produce more than 6000 degrees of high temperature, corrosion metal, cutting into the workpiece of CNC machine tools.

2. The processing principle of the slow wire is that there is a gap between the online electrode and the workpiece, and the metal is removed by continuous discharge.

3, when the flexible electrode wire close to the workpiece, to the discharge gap usually considered (such as 8~10μm), even if the electrode wire has been in contact with the workpiece, and can not see the gap in the microscope, also often can not see the spark, only when the workpiece electrode wire top bending and offset a certain distance (a few microns to dozens of microns), will appear normal spark discharge.

4, at this time each wire electrode feed 1μm, the discharge gap will not reduce 1μm, but the electrode wire to increase a bit of tension between the wire, the workpiece increased a bit of lateral pressure, obviously, only in the electrode wire and the workpiece to maintain a certain contact pressure, will produce spark discharge. An electrochemically generated insulating thin film medium exists between the electrode wire and the workpiece.

Thanks for reading. That's right. What is a slow-walking wire? What does it do? Some content from the Internet, for reference only. If you want to know more about the western slow wire processing details, welcome to call for detailed inquiries, wholeheartedly at your service.