Science Classroom : Do you have machining problems? Do your workpieces always have pitting and orange peel? Do you want to know the application of nanotechnology? Here we have a series of industrial science tips to share with you! If you have any questions, please contact us directly and we will help you to solve your problems.
Mold Structure System When designing a set of molds, 4 objective conditions must be taken into consideration. 1. Steel structure: Hardness, tensile and compressive strengths, toughness and stress distribution analysis for core insert , mold frames, slides, repositioning tips, and mold seats. 2. Physical and chemical properties of the material of the end product, and …
There are two main types of machining, one is to make a mold and then make a large number of copies, and the other is to use various tools and specific materials to make the required shapes. Individual processing includes the following three major categories. 一、Cutting: drilling, milling, turning 二、Grinding: Surface grinding, cylinder grinding 三、Electrical …
Alloys for mold Steel Mold steel is a type of tool steel that is used to make various types of forming tools: cold work, hot work and plastic mold steel. What elements can be used to make mold steel? Main alloys: carbon (C), silicon (Si), manganese (Mn), phosphorus (P), sulfur (S), nickel (Ni), chromium (Cr), …
Types of ultra-precision machining Intensive research Optical sanding is the process of grinding the surface roughness of a workpiece to a level that allows it to be polished. Glass lenses are processed using abrasives such as aluminum oxide, SIC, and cast iron or aluminum abrasive discs. For precision grinding, a cast iron platen with correct …
Definition of grinding What is grinding? Grinding can be described as an operation to minimize the roughness of the surface of a workpiece without damaging its shape. Grinding is a kind of machining action using a grinder. The Chinese word for grinding machine is called a grinding disk in Japan, and some people call it …
Relative hardness and absolute hardness are clearly stated in textbooks. The relative hardness of minerals is divided into 10 grades. A mineral that scratches the surface of a crystal when two minerals rub against each other is less hard, meaning that the harder crystal will scratch the less hard crystal. Minerals with relative hardnesses ranging from 1 to 10 are “1 Talc, 2 Gypsum, 3 Calcite, 4 Fluorite, 5 Apatite, 6 Orthoclase, 7 Quartz, 8 Topaz, 9 Corundum, and 10 Diamond.
This set of relative hardness scales was pioneered by the mineralogist Friedrich Mohs (1773-1839), also known as Mohs, hence the name Mohs or Mohs Hardness. Mohs was born in Germany and moved to Austria in 1801 to engage in mineral identification work. Therefore, some books say that Mohs was an Austrian, while some Internet sources say that he was a German.
With the traditional mechanical polishing method for large-area PCD products, the grinding wheel will first contact the raised part of the product due to stress deformation, resulting in a long polishing time and localized thinning of the thickness and other drawbacks. In this regard, the author designed and utilized a double rocker oscillating fixture, so that the polishing surface in the polishing process can be adapted to contact with the end face of the grinding wheel, this paper mainly describes the characteristics of this new technology and equipment and the use of the effect.
The ISO 6743 standard “Classification of lubricants, industrial lubricants and related products (Class L)” divides lubricant products into 18 groups, which are arranged according to the letters A to Z. The lubricants are classified into 18 groups. A：Total loss systems B：Mould release C：Gears D：Compressors (including refrigeration and vacuum pumps) E：Internal combustion engine F：Spindle bearings,bearings and …
Nano particles as photocatalysts have many advantages. First of all, the small particle size, large specific surface area and high photocatalytic efficiency. In addition, most of the electrons and holes generated by nanoparticles will not be recombined before reaching the surface. Therefore, if more electrons and holes can reach the surface, the chemical reaction activity will be high. Secondly, nanoparticles dispersed in dielectrics are often transparent, which makes it easy to observe the effects of charge transfer, proton transfer, semiconductor energy level structure and surface state density at the interface by optical means and methods.
Grinding wheels are indispensable to the general tool processing industry, often seen in factories using grinding wheels, but have you ever thought about how grinding wheels are made? What are the processes and techniques for making grinding wheels? Let us bring you to uncover the secrets of the highest level of production of diamond grinding wheel manufacturers….
