How Are Internal Stresses Formed?
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 …
Mechanical
Top 10 Greatest Formulas in The World
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 …
36 Types Of Thermomechanical Treatment Process
The deformation heat treatment process is also known as “thermo-mechanical processing”. In the machinery manufacturing process, the pressure processing (roll, forging, rolling) and heat treatment process can be effectively combined …
How To Detect Cracks In Fasteners Non-Destructively?
This article summarizes the current status, advantages and shortcomings, as well as the hotspots and development directions of the existing crack detection technologies based on the existing fastener crack detection …
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Mold Heat Treatment Defects: 7 Causes And Preventive Measures
The heat treatment of the mold includes preheat treatment, terminal heat treatment and surface hardening treatment. Usually heat treatment defects refer to various defects that occur during the terminal heat …
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Ball Screw: Indispensable Mechanical Transmission Components
In the transmission industry, the ball screw is an indispensable mechanical component. It is the most commonly used transmission unit in tool machinery and precision machinery, Its main function is to …
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Heat Treatment Of Titanium Alloys
Heat treatment characteristics of titanium alloy (1) The martensitic phase transformation does not cause significant changes in the properties of titanium alloys. This feature is different from the martensitic phase …
The Most Awesome Mechanical Design Manuscript In Human History
Every period is full of mechanical enthusiasts and designers, especially the brainy mechanical engineers of the former Soviet Union and Germany, who built some machinery and design manuscripts you may …
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Riveted, Bolted And Welded Connection: Advantages And Disadvantages
In the 19th and 20th centuries, many important steel structures were riveted, such as the Eiffel Tower and the skeleton of automobiles etc. In the late 20th century, a large number of …
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Gravity Casting Vs Pressure Casting: What’s Their Difference
Introduction of gravity casting Gravity casting refers to the process that molten metal is injected into the mold under the gravity of the earth, also known as casting. Generalized gravity …
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What Is Surface Roughness？
01 What is surface roughness? In technical communication, many people are used to using “surface finish” index. In fact, “surface finish” is put forward according to human visual point of …
Single Side Deburring Machine Vs Double Side Deburring Machine: Which One Is Better?
After laser cutting, the parts can not enter the assembly stage immediately, so a deburring machine is needed to remove the burr produced in the cutting process Other processes, such as …
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Discussion: Forging Cracks, Heat Treatment Cracks And Raw Material Cracks
First of all, the concepts of “raw material cracks” and “forging cracks” need to be determined first. The cracks that appear after forging should be understood as “forging cracks”, but …
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8 Factors Affecting Fatigue Strength Of Metal Materials
The fatigue strength of materials is very sensitive to various external and internal factors. External factors include the shape and size of parts, surface finish and service conditions. The internal …
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What Is Residual Stress? How To Measure Residual Stress
What is residual stress Let’s start with an official definition of residual stress: Residual stress refers to the effect and influence of various process factors in the manufacturing process; When these …
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Why Heat Treatment is Required in Mechanical Processing (4 ways of correct heat treatment)
Why Heat Treatment is Required in Mechanical Processing This is a very good question. This is a rather confusing issue for many newcomers who have just entered the industry, and …
DC Motors vs. AC Motors (The Ultimate Difference)
I will talk about the working principle and difference between DC motor and AC motor in the simplest and most understandable way. The picture above is the simplest physical model …
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21 Key Issues With Servo Motors
The general structure of an industrial robotic electric servo system is three closed-loop control, namely current loop, speed loop and position loop. In general, for the AC servo drive, various …
9 Factors To Be Considered In Bearing Selection
Various types of bearings have different characteristics due to different designs. Due to the variability and complexity of the specific installation location and application of bearings, there is no fixed …
What Is The Cause Of Servo Motor Jitter?
Under which conditions will the servo motor shake? How to solve these problems caused by servo motor jitter? How are they solved? For example: if the acceleration and deceleration time …