Hardness refers to the ability of a material to resist local deformation, especially plastic deformation, indentations or scratches. It is an indicator of the hardness of the material. Types of hardness According to the different test methods, there are three types of hardness. ① Scratch hardness It is mainly used to compare the hardness of …
Metal Hardness: The Definite Guide (with Hardness Chart) Read More »
What is plastic forming Plastic forming is the use of the plasticity of the material, under the external force of the tool and mold to process the work piece with less or no cutting process. There are many types, including forging, rolling, extrusion, drawing, stamping, etc. Types of plastic forming process （1）Forging What is Forging It …
What is casting Liquid metal is poured into a mold cavity that matches the shape and size of the part. The production method that waits for it to cool and solidify to obtain the blank or part is usually called metal liquid forming or casting. Technological process: liquid metal → filling → solidification shrinkage → casting …
Bearing lubrication is to enable the bearing to run normally, avoid direct contact between the raceway and the surface of the rolling body, reduce friction and wear inside the bearing, extend the service life of the bearing, as well as enhance the performance of the bearing. At the same time, it can prevent rust and …
11 Bearing Lubrication Methods, How Many Do You Know? Read More »
GUIDE Milling tools are rotary tools with one or more teeth for milling. During work, each cutter tooth intermittently cuts off the remainder of the work piece. The milling tool is mainly used for milling planes, steps, grooves, forming surfaces, cutting work pieces etc. And I believe that when selecting a milling tool, you need to …
How To Select Milling Tools: Based on 3 Principles Read More »
Bearings are important components in machinery and equipment. Its main function is to support mechanical rotating bodies to reduce the mechanical load friction coefficient of the equipment during transmission. Bearings are divided into radial bearings and thrust bearings according to different bearing directions or nominal contact angles. According to the type of rolling body, it is …
14 Types of Bearings: The Characteristics, Differences and Uses Read More »
In mechanical cutting, when using CNC machine tools to cut, according to the cutting method, there are turning, milling, drilling and boring. Divided by the amount of material removed, there are rough machining, semi-finishing and finishing. According to the cutting tool materials used, there are high-speed steel, hard alloy, ceramics, diamond, and cubic boron nitride. …
GUIDE This article mainly explains the 7 types of dynamic seal forms commonly used in mechanical design. They are packing seal, mechanical seal, dry gas seal, labyrinth seal, oil seal, power seal and spiral seal. The problem of sealing of moving equipment is always present along with the operation of the equipment. Today, we have deliberately sorted …
7 Types of Dynamic Seals Commonly Used in Mechanical Design and Manufacturing Read More »
Sheet metal parts will inevitably have different degrees of sharp edges and burrs during the manufacturing process. Sharp edges and burrs exceeding a certain limit will affect many aspects, such as product production, turnaround transportation, quality, performance and appearance, even cause harm to production users, such as affecting the processing and assembly positioning, the surface coating …
Sharp Edge and Burr Control of Elevator Stainless Steel Sheet Metal Parts Read More »
Guide I believe you have encountered these common casting defects. Why are there defects and how to prevent them? This article explains very clearly. Stomata (Bubbles, Cavities, Air Locks) Features: Stomata are holes that exist on the surface or inside the surface, and are round, oval, or irregular. Sometimes multiple pores form an air mass, which …
6 Common Defects in Castings: Causes and Prevention Methods Read More »
The materials industry is the basic industry of the national economy, and new materials are the precursors of the development of the materials industry. Graphene, carbon nanotubes, amorphous alloys, foamed metals, ionic liquids … 20 new materials bring unlimited opportunities for the development of the materials industry. Today, the scientific and technological revolution is developing rapidly, …
1. Vacuum Plating Vacuum plating (c): A kind of physical deposition phenomenon. That is, under the vacuum state, argon gas is injected, and the argon gas hits the target, and the separated molecules of the target are adsorbed by the conductive goods to form a uniform and smooth imitation metal surface layer. Typical products: Surface treatment of reflective …
How many surface treatment processes do you know or have been exposed to? Don’t worry, I will share 21 types today, and the moving pictures will help us understand. 1. Micro-arc Oxidation Micro-arc oxidation, also known as micro-plasma oxidation, is a combination of electrolyte and corresponding electrical parameters. On the surface of aluminum, magnesium, titanium …
1. EDM (1) Basic principles Electrical Discharge Machining is a special processing method that uses electro-corrosion generated during pulse discharge between two electrodes immersed in working fluid to remove conductive materials. Also known as electrical erosion machining. EDM is suitable for the processing of complex parts such as small precision cavities, narrow slits, grooves, corners, etc. When …
9 Special Processing Technologies in Mold Manufacturing Read More »
Construction machinery is inseparable from the oil cylinder, and the oil cylinder is inseparable from the seal. Common seal is sealing ring, also called oil seal, which plays a role of insulating oil and preventing oil from overflowing or passing through. Common seals for hydraulic cylinders include the following 6 types: Dust seals Piston rod …
6 Different Types of Sealing Ring for Hydraulic Cylinder Read More »
Polishing not only increases the aesthetics of the workpiece, but also improves the corrosion and abrasion resistance of the material surface. It can also make the mold have other advantages, such as making plastic products easy to demold, reducing the production injection cycle and so on. Therefore, polishing is a very important process in the …
Annealing, normalizing, quenching, tempering, quenching and tempering … totally 12 heat treatment processes. This article will help you sort out. 01 Annealing Operation method: After heating the steel to a temperature of Ac3 + 30 -50 degrees or Ac1 + 30 – 50 degrees or below Ac1 (you can consult the relevant materials), it is …
12 Heat Treatment Processes: Annealing, Normalizing, Quenching, Tempering … Read More »
Thermal deformation is one of the reasons that affect the machining accuracy. When the machine is affected by changes in the ambient temperature of the workshop, friction heating due to motor heating and mechanical movement as well as cutting heat and cooling medium, all of these will cause uneven temperature rise in various parts of …
How Does Temperature Affect Accuracy in CNC Machining? Read More »
1. The generation of internal stress In injection molded products, the local stress state is different everywhere, and the degree of deformation of the product will depend on the stress distribution. Such stresses can develop if the product has a temperature gradient while it is cooling. So this kind of stress is also called “forming stress”. There …
A few years ago, the British scientific journal “Physics World” asked readers to vote for the “greatest formula”. The ten most famous formulas on the list included both the unknown 1 + 1 = 2 and the famous E = mc^2; There are both simple-circle formulas and complex Euler formulas … These formulas are not …
