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材料科学与工程博客

新材料行业,科学和技术信息以及材料生产和应用技术以及材料测试相关的知识和信息

Do You Know the Cause of Failure of Mining Pick and the Way to Improve Its Performance?

Mining pick is one of the vulnerable parts in coal mining and roadway driving machinery, and it is the main tool for coal falling and coal breaking. Its performance directly affects the production capacity of coal mining machinery, power consumption, working stability and the service life of other related parts. With the increase of people’s demand for energy, especially for coal, in order to improve the mining efficiency, the power of the shearer is increasing, and the quality of the pick is required to be higher and higher. As the material of the shearer pick, it is required to have … 阅读更多

The Straightforward and Informative Intro about Common Elements Added into Alloy Steel

As is familiar to us, elements to be put into some kind of steel alloy for improving or altering its properties are regarded as alloy elements. Commonly used alloying elements are chromium, nickel, molybdenum, tungsten, vanadium, titanium, niobium, zirconium, cobalt, silicon, manganese, aluminium, copper, boron, rare earth, etc. Phosphorus, sulphur and nitrogen also play the role of alloys in some cases. Table of Contents CrNickel (Ni)MoWolfram(W)Vanadium(V) Cr Chromium can increase hardenability and secondary hardening of steel. It can improve hardness and wear resistance of carbon steel without brittleness of steel. When the content exceeds 12%, the steel has good high … 阅读更多

Structure and Classification of Titanium Alloys

Table of Contents Base knowledge of titanium Elements of Titanium Alloy classificationAlpha titanium alloyBeta titanium alloyAlpha+beta titanium alloyApplication of titanium alloy Base knowledge of titanium Titanium is an important structural metal developed in the 1950s. Titanium alloys are widely used in various fields because of their high specific strength, good corrosion resistance and high heat resistance. Many countries in the world have recognized the importance of titanium alloy materials, and have successively studied and developed them, and obtained practical application. Titanium is the fourth B element in the periodic table. It looks like steel and has a melting point of … 阅读更多

Is cold upsetting the same as cold extrusion? What’s the difference between them?

Let ‘s just cut into the case. Table of Contents What is cold extrusion?Advantages of cold extrusion processWhat is cold heading?Advantages of cold heading processIs cold heading the same as cold extrusion? What’s the difference? What is cold extrusion? Cold extrusion of cold extrusion workpiece is to place metal blank in the cold extrusion die cavity. At room temperature, pressure is exerted on the blank through the fixed punch on the press, so that the metal blank can produce plastic deformation and the processing method of parts is made. Obviously, cold extrusion processing relies on the die to control the … 阅读更多

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. Table of Contents Metal MaterialsBearing alloycopper alloyAluminum-based alloyGrey cast iron and wear-resistant cast ironNonmetallic MaterialsPorous Metal Materials 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, … 阅读更多

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. Table of Contents Material aspectStructural Design of PartsTechnical Conditions for Heat TreatmentQuenching CrackForging cracks Material aspect 1. Carbon is an important factor affecting quenching tendency. With the increase … 阅读更多

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, … 阅读更多

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

Table of Contents Function and Definition of Progressive DieStructure Composition of Progressive DieProduct characteristics of progressive dieAdvantages of multi-position progressive dieStructural characteristics of progressive dieThe forming process of progressive dieThe manufacturing cycle and cost of progressive die1. Manufacturing cycle of progressive die2. Progressive Die Manufacturing Cost3. Precision of progressive dieManufacturing conditions of multi-position progressive die 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 … 阅读更多

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.  Table of Contents Classification of all common STSs by their componentDifferentiation of Stainless Steel 201 and 304What is 316 stainless steel?What is 430 stainless steel?What is 439 stainless steel? 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 … 阅读更多

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. Table of Contents Super austenitic stainless steelSuper ferritic stainless steelSuper Duplex Stainless SteelSuper martensitic stainless steelFunctional stainless steelNitrogen-alloyed stainless steelHigh Clean Stainless … 阅读更多

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