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.
Alloying Elements in Tool Steels for Molds Mold steel is a type of tool steel used to manufacture various forming tools, including cold work, hot work, and plastic mold steels. What elements are used to manufacture mold steel? Major Alloying Elements: Carbon (C), Silicon (Si), Manganese (Mn), Phosphorus (P), Sulfur (S), Nickel (Ni), Chromium (Cr), …
Types of ultra-precision machining Lapping This is a form of optical sanding, where the surface roughness of the workpiece is ground to a level that allows for polishing. Materials such as alumina and SiC abrasives are used along with cast iron or aluminum lapping plates for processing glass lenses. Lapping typically uses cast iron plates …
Definition of Grinding What is grinding? Grinding can be described as “an operation that reduces the surface roughness of a workpiece as much as possible without damaging its shape.” Grinding is a machining action carried out using a grinding machine. In Chinese, grinding machines are referred to as “grinders,” known as “ken sakuban” in Japan. …
Relative hardness and absolute hardness are clearly explained in textbooks. The relative hardness of minerals is divided into 10 levels. When two minerals are rubbed together, the one that gets scratched has the lower hardness, meaning that the harder mineral will scratch the softer one. The representative minerals for each level of relative hardness from 1 to 10 are as follows: 1 – Talc, 2 – Gypsum, 3 – Calcite, 4 – Fluorite, 5 – Apatite, 6 – Feldspar, 7 – Quartz, 8 – Topaz, 9 – Corundum, 10 – Diamond. This relative hardness scale was first developed by mineralogist Friedrich Mohs (1773-1839), and as such, relative hardness is also called the Mohs hardness scale. Mohs was born in Germany but moved to Austria in 1801 to work in mineral identification, which is why some books refer to him as Austrian, while other sources refer to him as German.
When traditional mechanical polishing methods are used on large-area PCD products, the polishing wheel first contacts the raised areas caused by stress deformation. This leads to longer polishing times and localized thinning. To address this issue, the author designed and implemented a dual-rocker swinging fixture, allowing the polished surface to adaptively contact the polishing wheel’s end face during the process. This article primarily discusses the features and effectiveness of this new processing equipment.
The ISO 6743 standard “Lubricants, industrial oils and related products (class L) — Classification” divides lubricant products into 18 groups, which are arranged according to the letters A to Z. 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 associated clutches G：Slideways H：Hydraulic systems M：Metal working …
The Application Occasion Classification of Lubricant Read More »
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….
There are usually two reasons for the steel grain phenomenon in the mold: one is the problem of the mold steel itself, many mold makers choose poor quality (cheap) steel to make the mold in order to save cost, resulting in the surface of the mold after the mold polishing to appear grain, and some fine lines. At the same time, under the light will lead to distortion of the light, mold polishing can only reduce the phenomenon of mold steel grain. Secondly, the skill of the mold polisher is not good.
Is it a material problem or a technique problem that produces pitting in polishing, and if it is a technique problem, can it be avoided? In order to solve this problem, we need to know how this problem occurs, and there are 3 reasons for this problem. Please read on to find out
