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Working principle of slow wire processing

 Slow wire walking, also called low-speed wire walking, is a kind of CNC machining machine tool that uses continuously moving fine metal wire as an electrode to pulse spark discharge on the workpiece to generate a high temperature of over 6000 degrees, ablate metal and cut into a workpiece. The principle of wire processing is the phenomenon that there is a gap between the wire electrode and the workpiece, and the metal is removed by continuous discharge. Since the slow-moving wire cutting machine adopts the method of wire electrode continuous feeding, that is, the wire electrode is processed during the movement, so even if the wire electrode is worn out, it can be continuously supplemented, so it can improve the machining accuracy of the parts and slow the wire. The surface roughness of the workpiece processed by the cutting machine can usually reach Ra=0.8μm and above, and the roundness error, linear error and dimensional error of the slow-moving wire cutting machine are much better t

Spring Design Attention And Roll Forming Method

Spring Design Attention And Roll Forming Method The coiling characteristics and methods of springs are divided into cold coiling method and hot coiling method. Cold winding method: When the diameter of the spring wire is less than 8mm, the cold winding method is adopted. High-quality carbon spring steel wire is usually first cold drawn and then heat treated. After winding, it is generally not quenched, but only tempered at low temperature to eliminate the internal stress during winding. Hot-rolling method: Springs with larger diameter (>8mm) spring wire should use hot-rolling method. Hot rolled springs must be quenched and tempered at medium temperature. The Design Process Of Various Springs ·          Installation space: When designing a  compression spring , it is necessary to have a clear understanding of the space required for the installation of the spring, in order to effectively grasp the basic manufacturing conditions of the compression spring, including the outer diam

Hydrostatic guideway of CNC machining lathe

The static pressure slide rail (TTW guide) of the CNC machining lathe transfers the oil with a certain pressure through the throttle to the oil cavity between the sliding surfaces of the slide rail (TTW guide) to form a pressure oil film to float the moving parts , Make the sliding rail (TTW guide) surface in a pure liquid friction state.   CNC machining General CNC machining usually refers to computer digital control precision machining, CNC machining lathe, CNC machining milling machine, CNC machining c17200   beryllium   copper   and milling machine, etc. The feed route of finishing is basically carried out along the part contour sequence. Therefore, the focus of determining the feed route is to determine the feed route of rough machining and idle stroke. In the numerical control processing, the control system issues instructions to make the tool perform various motions that meet the requirements, and the shape and size of the workpiece are expressed in the form of numbers and lette

Semikron SKM600GA124D

Semikron SKM600GA124D
#SKM600GA124D Semikron SKM600GA124D New SKM600GA124D Low Loss IGBT Module;600A/1200V/1U SKM600GA124D, SKM600GA124D pictures, SKM600GA124D price, #SKM600GA124D supplier

SKM600GA124D Description
• N Channel, enhancement mode
• Short internal connections avoid oscillations
• With built-in gate resistor chips (“R”) Rgtotal = 1,3 Ω
• Without hard mould (environmental aspects)
Isolated copper baseplate using DCB Direct Copper Bonding Ceramic
• All electrical connections on top for easy busbaring
• Large clearance (10 mm) and creepage distances (13 mm)
Typical Applications
• Switched mode power supplies
• DC servo and robot drives
• DC choppers
• Resonant and welding inverters
• AC motor drives
• Laser power supplies
• UPS equipment
• Not suitable for linear amplification
Maximum ratings and characteristics 
.Absolute maximum ratings (Tc=25°C unless without specified)
Collector-Emitter voltage Vces:1200V
Gate-Emitter voltage VGES:±20V
Collector current Ic:700A
Collector current Icp:1400A
Collector power dissipation Pc:4000W
Collector-Emitter voltage VCES:2500V
Operating junction temperature Tj:+150°C
Storage temperature Tstg :-40 to +125°C

SKM600GA124D Low Loss IGBT Module;600A/1200V/1U SKM600GA124D

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