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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

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

Introduction of KOVAR parts

KOVAR parts are commonly used as metal casing materials in the electronic packaging industry. Because they have a linear expansion coefficient close to that of molybdenum group glass, and can produce less sealing stress during the sealing (melting) process with molybdenum group glass, so To obtain good air-tightness, in order to make the metal tube and shell to achieve air-tight sealing, in the entire sealing process, the annealing process undoubtedly plays an important role as a link between the previous and the next. The internal stress generated during KOVAR  machining also prepares the material structure for the implementation of the subsequent process-the sealing process of the metal parts. The main purpose of annealing Kovar shell before sealing is to: (1) Eliminate machining stress. When Kovar undergoes plastic machining deformation during cold working, about 10% to 15% of the applied energy is converted into internal energy, which is commonly referred to as internal stress,

How to deal with the sudden loss of battery power

After work in the evening, Ms. Sun prepares to drive home as usual. But when I started, I found that the car couldn’t catch fire anyhow, and I heard the sound of babble when I started. Ms. Sun hurriedly called the rescue of the 4S shop, and the rescuers told her that the battery was dead. But Ms. Sun had already checked it when she went to work in the morning. The air conditioner and lights were all turned off, and there was no equipment that used electricity. Why did the battery suddenly run out?

I believe that friends who drive a lot will occasionally encounter the same problems as Ms. Sun. The maintenance staff of the 4S shop said that to prevent the battery from suddenly running out, the best way is to pay more attention to the “distress signal” sent by your car. This signal has the following manifestations: First, the starter does not rotate or rotates weakly, so that the starter cannot be started; second, the headlights are darker than usual; third, the volume of the horn is low or even does not sound. When the above problems occur, the car owner should check whether it is a battery problem.

In order to minimize the power consumption of the battery, the experts of the 4S shop put forward two suggestions: First, avoid turning on the lights or listening to the broadcast for a long time when the engine is turned off; second, even if the engine is running, if the parking time is long, you should Turn off the power of unnecessary electrical equipment (lights inside and outside the car, audio, navigation, etc.). Develop good car use habits, you can avoid unnecessary dilemmas.

But in case the battery suddenly runs out of power, there are several ways to “self-help”.

First, cart starting is a *familiar and *effective emergency starting method for everyone, but it is a last resort and cannot be used frequently, because this will cause certain damage to the engine and clutch. Automatic transmission vehicles should especially avoid using this Method starts.

Second, in order to avoid the battery cannot be charged when the battery is dead, the car owner should prepare a jumper cable in the car, which can be purchased in general auto parts stores. However, when connecting jumper cables, you must not make a mistake in the order of connecting jumper cables. First connect the positive terminal of the dead battery to the positive terminal of the rescue car battery, and then connect the negative terminal of the rescue car battery to the metal part (grounding wire) in the engine room of the dead car. After the jumper cable is connected, the engine of the rescue vehicle can be started, and the engine speed can be slightly increased. After about 5 minutes, the dead battery can be charged in an emergency. After charging is complete, remove the jumper cable in the reverse order of connecting the jumper cable.

*The reliable way is to contact the rescue vehicle in time, then connect the jumper cable, and temporarily charge the rescue vehicle to start the engine.

After   *, experts reminded that the battery life is generally 2 to 3 years. After this period, the car should pay special attention to the maintenance of the battery in normal times. If necessary, replace it in time to avoid danger.

The automotive parts and parts machining, PTJ Shop offers the highest degree of OEM service with a basis of 10+ years experience serving the automotive industry. Our automotive precision shop and experts deliver confidence. We have perfected the art of producing large component volumes with complete JIT reliability, backed by the quality and long-term reliability our customers expect.

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