Characteristics and Application of Common Bearing Materials

As we all know, there are many kinds of bearing materials in the market. There are three kinds of common bearing materials: metal materials, porous metal materials, and non-metamaterials. Metal Materials Bearing alloys, bronze, aluminum-based alloys, zinc-based alloys, etc. are all metal materials. Among them, bearing alloys, also known as white alloys, are mainly alloys of lead, tin, antimony or other metals, which have low strength under heavy load and high-speed conditions. The reason is because of its characteristics, such as good wear resistance, high plasticity, good running-in performance, good thermal conductivity, good glue resistance and good adsorption with oil. However, … Read more

CHARACTERISTICS AND DIFFERENCES OF QUENCHING CRACK AND FORGING CRACK

Quenching crack is a common quenching defect, which is caused by many factors. Because the defects of heat treatment begin with product design, the work of preventing cracks should start with product design. It is necessary to select materials correctly and design structures rationally, put forward appropriate technical requirements for heat treatment, properly arrange technological route, select reasonable heating temperature, holding time, heating medium, cooling medium, cooling method and operation mode, etc. Material aspect 1. Carbon is an important factor affecting quenching tendency. With the increase of carbon content, MS point decreases and quenching tendency increases. Therefore, under the condition … Read more

Application of Scanning Electron Microscope in Material Analysis

Since the first commercial scanning electron microscope came out in 1965, after 40 years of continuous improvement, the resolution of scanning electron microscopy has increased from 25 nm of the first one to 0.01 nm. Most scanning electron microscopy can be combined with X-ray spectrometer and X-ray energy spectrometer, which has become a comprehensive analysis of the surface micro-world. Multifunctional electron microscopy instrument. Scanning electron microscopy (SEM) has become a powerful tool widely used in various scientific fields and industrial sectors. Scanning electron microscopy (SEM) has been widely used in many fields, such as geology, biology, medicine, metallurgy, mechanical processing, … Read more

An Overview of Progressive Die&Stamping for Beginner New to Stamping

Function and Definition of Progressive Die The English name progressive die refers to a series of stamping dies which are made up of several working stations, each working station completes different processing, each working station is related in sequence, and a series of different stamping processes are completed in one stroke of the punch. Its function is to use the punch and die to exert a certain form and size of force on the sheet metal, so that the material can produce plastic deformation, thereby transforming the hair germ into product parts. Structure Composition of Progressive Die 1. The progressive … Read more

The Difference between Few Common Stainless Steels’ Properties and Composition

stainless steel is used for corrosive environments. By adding some amounts of elements, such as nickel and chromium, outstanding corrosion resistance are obtained. To correctly select the grade right for the project. We share this blog about few common grades of stainless steel to get you preliminarily understand them.  Classification of all common STSs by their component According to the composition, it can be divided into Cr system (SUS 400), Cr-Ni system (SUS 300), Cr-Mn-Ni system (SUS 200) and precipitation hardening system (SUS 600). 200 Series-Chromium-Nickel-Manganese Austenitic Stainless Steel 300 Series-Chromium-Nickel Austenitic Stainless Steel 301-good ductility, used for molding products. … Read more

What are Super Stainless Steels?

Super stainless steels may be not a common material to you, which are referred to a special type added with a higher content of Nickel, chromium, molybdenum than conventional stainless steel. This blog will help you to get knowledge of them and determine which one is good for your project. According to their microstructural characteristics, super inox can be divided into super ferritic stainless steel, super austenitic stainless steel, super martensitic stainless steel and super duplex stainless steel. Super austenitic stainless steel On the basis of common austenitic stainless steel, this alloy prevents intergranular corrosion caused by precipitation of Cr23C6 … Read more

How do Grinding Parameters Impact on Tungsten Carbide Products?

Hey everybody, a new material weekly on surface grinding of ultra-fine cemented carbides. Reading this probably cost you about 15 minutes Abstract of this article: The grinding experiment of superfine cemented carbide was carried out on a plane grinder with diamond grinding wheel. The grinding surface morphology was observed by scanning electron microscopy and the surface roughness was measured by surface roughness tester. The influence of grinding parameters on the surface roughness of ultra-fine cemented carbide grinding was analyzed. The results show that the grinding surface roughness of superfine cemented carbide increases with the increase of grinding wheel size at the same … Read more

How to Prevent Tungsten Carbide Corrosion

Development Status of Corrosion Resistant Cemented Carbides With the rapid development of industrial technology, people’s demand for materials is getting higher and higher. The materials used should have not only high strength, high hardness but also good corrosion resistance. For example, the chemical industry and machinery require materials to have good chemical stability, strong corrosion-resistance, but also high strength and hardness to withstand the dual effects of chemical corrosion and mechanical wear. Although there are many kinds of corrosion-resistant materials, However, the comprehensive indexes of hardness, strength and corrosion resistance make it imperative to study corrosion-resistant cemented carbides. Classification of … Read more

Metal Powder Metallurgy in the Fabrication of Medical Instruments

Modern medical appliances are in great demand, and the structure of many medical appliances is also very sophisticated and complex, so a new manufacturing technology is needed to replace the traditional production. Nowadays, metal powder metallurgy can mass produce products with complex shapes in a short period of time, which can meet the manufacturing requirements of medical appliances and become an ideal manufacturing method. Metal powder metallurgy technology Metal powder metallurgy is a Near Net Shape Forming process developed rapidly in the 20th century. The general process is powder + binder mixing powder metallurgy degreasing sintering. The first is to … Read more

What Should You Know about Brazing of Carbide Brazed Tools

The main products that need to be used for brazing carbide brazed tools are the bimetallic structure of cutting tools, measuring tools, dies and excavation tools. The characteristic of this bimetallic structure is that its cutting parts are cemented carbide, and the matrix is carbon steel or low alloy steel, usually medium carbon steel. A bimetallic structure can cushion the tremendous stress acting on this kind of workpiece, especially under compressive bending, impact or alternating loads. Most of the carbide brazed tools are welded to the medium carbon steel or low alloy steel matrix. The brazing process is closely related … Read more

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