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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,

It is important to pay attention to small problems in tire maintenance

When it comes to the topic of car tire maintenance, most car owners may not really think about it. Nowadays, the way to maintain tires is basically to wash the mud on the tires with clean water or use some cleaning fluid to brush other dirt attached to the tires. This maintenance method, if divided by level, should be classified as *primary maintenance. And cleaning the mud is the only effect of this maintenance method.

Actually, car owners may wish to pay attention to this. This kind of rough car washing method does not work at all on the stolen goods hidden in the tiny corners of the tires. Don’t underestimate this inconspicuous corner, it really delays things at a critical time.

Sundries in the tire tread

During the use of tires, due to the different driving environments, there are often some hard things such as small stones caught in the tire pattern. If these small stones are not removed in time, it will take a long time. Some of them will fall off with the continuous expansion of the tire pattern when the tire rolls, and some will puncture or cut the tire carcass when the tire pattern continues to become shallow. It can cause air leaks or flat tires.

Gas nozzle and gas nozzle cap

When the vehicle is parked on the side of the road or close to certain fixed objects, the air nozzle of the tire will often touch the sidewalk and other objects. At this time, the root of the air nozzle may be cut by the border (sharp) of the rim, causing air leakage (heavier, it will leak out quickly, and it may be inflated once in a few days). So try not to use too long a gas nozzle to reduce the occurrence of this situation. There is a device on the top of the gas nozzle 'cap' which is more popular in the market at present, so that the gas pressure can be tested without unscrewing the nozzle cap, and it can be measured directly with a barometer. Although this kind of gas nozzle is convenient, but the gas nozzle cap is too long, it is recommended not to just save trouble and cause unnecessary trouble. Seriously speaking, the regular valve cap is a small part that is easy to be ignored. It can prevent dust and other dirt from entering the valve. Some dust or small sand particles entering the air nozzle may push the air needle (deflate) or push the air needle (deform the air needle) and cause the tire to leak. Therefore, you must pay attention to the air nozzle cap every time you check the tires.

The spare tire in the trunk

In addition to checking the air pressure of the spare tire frequently, attention should also be paid to the storage of the spare tire. Most car owners will put the spare tire and common oil products such as engine oil in the trunk together. At this time, you must be careful not to let the oil directly touch your spare tire. As we all know, the main raw material of tires is rubber, and rubber is most afraid of oil stains. The oil stains immersed in the rubber can destroy the molecular structure of the rubber, accelerate its aging, and shorten its service life. If the tires are contaminated with oil when changing the engine oil, they should also be cleaned with a detergent with strong degreasing power in time.

One avoid three attention when buying tires

First, give priority to the original tires. The original tires are * able to match the speed of the car and the maximum axle load of the car. Therefore, theoretically speaking, priority should be given to the replacement of tires.

Next, pay attention to the tire pattern. The pattern on the car tire not only plays a beautiful role, but also has a great impact on the performance of the tire. Especially for cars that often drive in southern cities, you should choose tires with better drainage patterns, such as regular small blocks. For cars that require off-road and long-distance running, you can choose large blocks.

After   *, if you are not satisfied with the original handling of the vehicle, you can consider replacing tires with a lower flat ratio. For many models, one of the most effective ways to improve the appearance and handling performance of the vehicle is to replace tires with a low aspect ratio.

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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