mold,molding

  1.Sample thickness: When the   insulating plate   material is very thin, the breakdown voltage is proportional to the thickness, that is, the electrical strength has nothing to do with the thickness. When the thickness of the insulating material increases, it will be difficult to dissipate heat, impurities, bubbles and other factors will make the electrical strength reduce. 2.Temperature: Above room temperature, the electric strength decreases with the increase of temperature. 3.Humidity: Moisture has entered the insulating material. The electrical strength is reduced. 4.Voltage application time: The electrical strength of most organic materials for insulating boards decreases with the extension of the voltage application time. During the test, the boost speed is fast and the electrical strength is high, and the stepwise boost or slow boost voltage has a longer action time, which can better reflect the thermal effect and the existence of defects such as internal air gap...

  As machine tool accessories and   mold parts ,   guide pins and bushings   are in demand day after day in the development trend of various industries.In recent years,   good-selling guide pins and bushings   have been used in large numbers and widely, providing powerful and favorable market prospects for more industries.At the same time, in a variety of occasions, the   guide pin and bushing   have been unanimously favored and praised, and its role is immeasurable.So, let's take a look at its main functions in   machine tools or molds ? 1.Orientation and positioning In the production of molds,  good quality guide pins and bushings  play an important role in this. Its mission in the production process is to guide and position. Moreover, in the process of moving mold and fixed mold, in order to make the mold appear in place and the whole work process does not cause errors and failures due to some problems, it is its mission to fully...

  1.Definition of guide pin The  guide pin  is a guide element used in the mold in combination with the components to ensure that the mold moves and guides the mold stroke with precise positioning. They are generally cylindrical with shoulders and usually have oil grooves. 2.The material of the guide pin The material of the  guide pin  is generally selected from bearing steel, hot work die steel, easy car iron, etc., and the use of bearing steel SUJ2 is larger, which greatly enhances the durability and interchangeability of the guide post in terms of guiding performance. The guide post and components constitute the outer guide post component and the inner guide post component, which have a beautiful metallic luster. Heat treatment of guide post: HRC58-62; surface roughness of guide post: Ra0.8, Ra1.6. 3.Center hole of guide pin The roundness of the  guide pin  is very demanding. The central hole is mainly used to grind the outer diameter with a cylindr...

  1. Sheet blanking The CNC punch press is affected by the tool. For the processing of some special-shaped workpieces and irregular holes, large burrs will appear on the edges. The later deburring must be performed, and the accuracy of the workpiece will be affected to a certain extent. Schematic diagram of punching burr section Laser processing has no tool restriction, flat section, suitable for processing special-shaped workpieces, but it takes a long time to process small workpieces. Place the worktable next to the CNC and the laser, which is conducive to placing the sheet on the machine for processing and reducing the workload of lifting the board. Some usable side materials are placed in designated places to provide materials for trial molds during bending. 2. Familiar with drawings The sheet metal processing is based on the drawings, according to the different unfolded drawings and batches, choose different blanking methods, including laser, CNC punching, shearing, molds, etc...

  1. Nitrogen gas springs   can be roughly divided into four categories according to its basic structure： ISO International Standard Type ISO  nitrogen gas spring  are the most commonly used typical types of nitrogen gas springs. All technical parameters comply with the ISO11901 gas spring international standard; B-type gas springs also comply with FORD-WDX3560 (Ford), GM-M-150 (General) and Renault (Renault). ) And other company's nitrogen gas spring standards. Compact Structure Type The compact structure is also called J-type nitrogen gas spring, which is one of the series of nitrogen gas springs. The full name is J-type compact nitrogen gas spring. The J-type compact nitrogen gas spring is a type that is popular among mold designers. Compared with the B-series nitrogen gas spring, it has a shorter cylinder base length, so the total length is also shorter, which can reduce the design height of the mold. It is a special nitrogen for molds. One of the preferred varie...

  Reactor is an indispensable important component of the entire power system. The reactor generally used in the frequency converter can not only prevent the interference from the grid, but also reduce the pollution of the grid by the harmonic current generated by the rectifier unit. Therefore, the choice of its insulating material must be cautious. Relevant departments have determined that today's   FR4 epoxy board   is the best insulation material for reactors. Next, let's take a concrete look at why FR4 epoxy board is used as an insulating material? FR4 is made of epoxy resin impregnated with electrical glass cloth by high temperature and hot pressing. It has the characteristics of good insulation, high temperature resistance, and good mechanical strength. And there is no need for regular testing, which greatly saves manpower and material resources. The high temperature resistance of FR4 can reach 160 degrees. Even in the scorching summer, there is no worry that it will...

Nitrogen gas spring for mold/die   (referred to as die gas spring or nitrogen gas spring or nitrogen cylinder or nitrogen cylinder) is a new type of elastic component that uses high pressure nitrogen as the working medium. Nitrogen Spring Features: Its small size, large elasticity, long stroke, stable work, precise manufacturing, long service life (one million times), flat elasticity curve, and no need for pre-tensioning, etc. Nitrogen Gas Spring Function: It has tasks that are difficult to complete with conventional elastic components such as metal springs, rubber and air cushions, simplifies mold design and manufacturing, facilitates mold installation and adjustment, extends mold life, and ensures stable product quality. It can also be designed as a nitrogen spring The system, as a part of the mold to participate in the work, can easily achieve constant pressure and delayed action in the system. It is a new generation of the most ideal elastic component with flexibility. We are t...

  FR4 G10 epoxy board  is a kind of high polymer that can be used in medium temperature environment. It is also a typical insulating material. Its main component is epoxy resin, so it will generally show heat deformation at a high temperature of 180°C. In order to ensure its integrity, it is generally not heated together with other metals. In addition, we must also pay attention to whether it is toxic. Although the raw materials used in manufacturing are non-toxic, whether the products produced are toxic or not depends on the manufacturing process. When using epoxy resin to make various products, Other substances or solvents may be added to make the performance of the epoxy resin itself changed and become toxic. Epoxy resin is generally used together with additives. According to the different additives, it can be judged whether the products are toxic. Generally, the main additives of epoxy resin are curing agent, modifier, filler, diluent, etc., which determine whether the pro...