Search This Blog

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

How Do Cnc Swiss Machines Work

How Do Cnc Swiss Machines Work Save 0 What Is Swiss Machine –The full name of the walking CNC lathe, it can also be called the spindle box mobile CNC automatic lathe, the economical turning and milling compound machine tool or the slitting lathe. It belongs to precision machining equipment, which can complete compound  machining such as turning, milling, drilling, boring, tapping, and engraving at one time. It is mainly used for batch  machining of precision hardware and special-shaped shafts. This machine tool first originated in Germany and Switzerland. In the early stage, it was mainly used for precision machining of military equipment. With the continuous development and expansion of industrialization, due to the urgent needs of the market, it was gradually applied to the  machining of civilian products; the development of similar machine tools in Japan and South Korea Earlier than China, it was mainly used in the military industry in the early days. After the war, it was gradually

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

To obtain a high viscosity index base oil product has a reasonable distribution in composition

Since the sulfur element is mainly concentrated in the macromolecular polycyclic polar aromatics, when the aromatics content in the base oil is very low, most of the sulfur has been removed, so the sulfur content generally meets the index requirements. The viscosity index is related to the saturated hydrocarbon content in the base oil, but it is not a simple linear relationship, but is determined by the total amount of saturated hydrocarbons and the ring distribution of paraffins, cycloalkanes and cycloalkanes that constitute saturated hydrocarbons. .

In order to obtain base oil products with high viscosity index, in addition to the higher saturated hydrocarbon content of the base oil, the saturated hydrocarbons should also have a reasonable distribution in the composition of paraffins and naphthenes, in order to achieve the goal. To further increase the saturated hydrocarbon content in the base oil, it can be achieved by increasing the reaction depth and reducing the aromatic content. However, from the reaction point of view, the saturated hydrocarbon conversion reaction has become the main reaction in the system. A large amount of saturated hydrocarbons are converted, which will greatly reduce the yield of lubricating oil fractions and even reduce the viscosity grade of the base oil product.

If the method of controlling the aromatics content in the hydrotreating feed is adopted, it can not only ensure the full conversion of aromatics, but also prevent the excessive cracking of saturated hydrocarbons, so that the goals of increasing the viscosity index and reducing the aromatics content can be guaranteed at the same time. Therefore, in the lubricating oil medium pressure hydrotreating process, in order to obtain high-yield and high-quality products, it is necessary not only to carefully select the appropriate pressure, temperature, catalyst and other conditions, but also to properly control the aromatic content in the feed to ensure high An important factor for quality and high yield base oil products.

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.

Link to this article:To obtain a high viscosity index base oil product has a reasonable distribution in composition

Reprint Statement: If there are no special instructions, all articles on this site are original. Please indicate the source for reprinting.:Cnc Machining,Thank

Contact Us


Get In Touch or Get A Quote

Need an expert? you are more than welcomed to
leave your contact info and we will be in touch shortly
YOUR COMPANY
Sifangyuan Industrial Park, Xinshapu, Huaide Community
Humen town, Dongguan City, Guangdong Province. 
860769-82886112
860769-82886112