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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 bett...

What are the rules for metal stamping die scrap tube?

The Purpose Standardize the management of the scrapping of the company's metal stamping dies, prevent the loss of company assets, and formulate this system specially. Scope of application It is suitable for the management of the company's scrap molds. Definition If the molds listed in the assets of the company fall under one of the following circumstances, the use management department may apply for scrapping. 1. Molds that exceed the specified service life. 2. The mold is severely damaged by accidents or accidents, and molds that cannot be repaired or have no repair value. 3. Metal stamping dies that have not reached the service life, but due to safety, quality, efficiency and other issues, the repair still fails to meet the minimum requirements of the customer's product process or affects the production safety and efficiency. 4. Product customers have stopped placing orders or have not placed orders for molds in several years. 4. Responsibilities 1. Responsibilities of th...

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 stre...

Tire rotation can extend the life of the spare tire and also has a shelf life

 

Many car owners will take their families out for self-driving tours, and the tires of their cars are also showing varying degrees of wear and tear, and many car owners are a little confused about the replacement of the tires.

Tire rotation can prolong life

I learned from many car 4S shops that now car owners are very careful about car maintenance, but many car owners think of changing tires when they encounter problems. In fact, it takes a lot of money to change tires frequently. In many cases, tire replacement is just a matter of cost. It can prolong the life of the tire, and the reasonable rotation can extend the life of the tire by 20%. It saves a lot of money for the owner.

The after-sales service manager of the Dongfeng Nissan franchise store, Wang? This Dan? Hemorrhoids ㄆ诨毨? ldquo;Rotation” is to ensure that each tire reaches the balance of work intensity. However, the tire replacement is also regular and cannot be arbitrarily. Change location.

Generally speaking, there are two ways to change tires. The first way is to swap front left tires and rear left tires, and swap front right tires and rear right tires; the second way is cross swapping, which means Change the left front tire to the right rear tire and the right front tire to the left rear tire. Relatively speaking, the second method is better.

As for the number of kilometers to be exchanged, the “Vehicle User Manual” of some models recommends that front-wheel drive vehicles should be changed every 8000 kilometers, while four-wheel drive vehicles need to be changed every 6000 kilometers. However, if there is no rotation for more than 20,000 kilometers, and tire wear has formed, it is not recommended to perform tire rotation to avoid deviation. But the king? Chuangyi, Jinghe, 飧赫飧龌龌莩地サ木咛逅鸷Naxie龆?ǎ?庋??W肌?p>    spare tires also have a shelf life

Now, in the process of using a car, most consumers don’t pay much attention to the spare tire, and they always think of the spare tire when the car tire is punctured or punctured. In fact, it is worth paying attention to consumers that if the specifications and structure of the spare tire are the same as the tires normally used on the car, the *scientific* reasonable method is to cross-rotate the spare tire together. In this way, a car will run 5~10. After 10,000 kilometers, the 5 tires (including the spare tire) wear very uniformly and can be replaced directly without wasting the spare tire.

However, because tires also have a shelf life, consumers must check the condition of the spare tire before using the spare tire. After all, the tire is a rubber product. If the spare tire is left for many years, it may crack. It is understood that, generally speaking, the shelf life of tires is calculated from the date of leaving the factory, which is about 5 years. Expired tires cannot be used anymore. Consumers should not be afraid of waste and should dispose of expired tires in time.

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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