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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

Child safety seat is not as expensive as choosing right

I remember that there were a few sentences like “There is only wrong buying, no selling wrong” and “Good goods are not cheap, and cheap goods are not good.” So in everyone’s subconscious, expensive things are justified. Especially when parents buy things for their cute babies, they will choose expensive goods.

Nowadays, families are more and more aware that child safety seats are required when families take their children to travel by car. Therefore, many parents may blindly choose the more expensive one when purchasing. But today I want to say that the choice of car child safety seats is not as expensive as the right choice.

At present, the state stipulates that safety seats with ccc certification must be sold in China, so parents must look at whether they have ccc certification when choosing. If not, no matter how good the business says, no matter how expensive the price is, you can't buy it.

Secondly, parents must determine the type of seat according to the age and weight of the child. For example, if you want to use it for one or two-year-old infants, you cannot choose a model that is suitable for children over 15 kg or three years old, otherwise it will not apply even if the price is expensive, and there may even be safety risks.

*After that, the seat installation method should be selected according to the vehicle configuration. If the car does not have an ISOFIX interface but buys a seat with this function, it is undoubtedly a waste of money. In addition, some consumers are “superstitious” in imported goods. In fact, the relevant national mandatory standards were issued in July last year. In the current market, as long as the products are from regular domestic manufacturers, the quality is guaranteed and the price is cheaper.

Therefore, the above three points are the key for parents to purchase car child safety seats. The price of child safety seats is only one way to choose on the basis of the above. I hope that parents can choose the right child safety seat for their babies.

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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