2025-12-26
Why are the roughness values 0.8, 1.6, 3.2, 6.3, and 12.5?
Do you know why the roughness is 0.8, 1.6, 3.2, 6.3, 12.5?Do you know why the cylinder diameter of the oil cylinder is 63, 80, 100, 125?Do you know why the cylinder pressure is 6.3, 16, 25, 31.5?Do you know why the thread specifications are 6, 8, 10, …
2025-12-22
The main factors affecting the dimensional accuracy of castings
Casting is a very important metal processing technology. For products with complex features, we can quickly and economically obtain the required structure through casting. However, the accuracy of castings is often an important factor in choosing the …
2025-12-16
brass hot Stamping Practical Guide
As an advanced processing method with minimal cutting, forging(called hot stamping) technology has significant advantages in the production of copper alloy products - it can ensure good mechanical properties of the parts and achieve efficient mass pro…
2025-12-12
What is the difference between PCB and PCBA?
As an SMT processing employee, have you ever wondered what the difference is between PCB and PCBA, two abbreviations that look similar? The difference between PCB and PCBA is that in the electronic manufacturing industry, PCB and PCBA are two commonly…
2025-12-09
sheet metal parts Common connection methods
Sheet metal parts are very common in our daily work and life. For example, car bodies, equipment shells, safes, furniture supports, electrical accessories and chassis, computer component cabinets, and now new energy battery boxes, etc. Due to differen…
2025-12-05
Causes and Countermeasures of Aluminum Alloy Casting Cracks
Cracks are a defect that we must consider and avoid in various castings. Due to the different properties of casting materials and the varying designs of casting cavities, we can control the occurrence of cracks by adding various alloy primary colors, …
2025-12-02
Why is stainless steel rarely seen in high-temperature environments?
After working in the factory for a long time, the experienced workers all have a consensus: stainless steel, which is usually quite "tough", is rare to see once it enters high-temperature areas where the heat waves are rolling. It's like let…
2025-11-18
What are the methods for hardening the surface of materials?
Sometimes, people hope that the surface of materials can be harder, such as in situations where wear resistance is required, where fatigue strength needs to be improved, where corrosion resistance is required, where high-temperature oxidation resistan…
2025-11-10
The reasons for work hardening of metal materials
The fundamental reason for work hardening of metal materials, also known as strain hardening, is that the density of internal defects (mainly dislocations) in the metal increases significantly during plastic deformation, as well as the complex interac…
2025-11-02
What are the solid solution, aging, and homogenization heat treatment processes for aluminum alloys
Whether it's airplanes in the sky, high-speed trains on the ground, or mobile phones in the hand, lightweight and sturdy aluminum alloy has become the cornerstone of modern manufacturing. To achieve outstanding performance of aluminum alloy, precise h…
2025-10-20
Heat treatment of Aluminium Alloy
In the field of aluminum alloy casting, the improvement of material properties often depends on the quality of the heat treatment process. Different from simple casting, heat treatment can achieve more significant changes in the internal structure of …
2025-10-09
What is steel blackening (bluing)?
Why do some steel parts turn blue (black) on the surface? What is the processing principle and process flow?introductionOxidation treatment of steel, also known as blackening or bluing treatment, is a surface treatment process for steel. The film colo…
2025-09-25
Solidification, risering and pouring of the casting
Introduction: In order to properly consider shrinkage and casting, it is necessary to understand alloy solidification. The solidification mechanisms of different alloys may vary greatly. Therefore, the methods for producing dense and defect free casti…
2025-09-09
how can the deformation of the workpiece occur during mechanical processing be eliminated?
During the cutting process, due to cutting heat, frictional heat between machine parts, internal stress of the workpiece, and clamping force, the workpiece may deform, resulting in waste products.1. Thermal deformation1.1 Thermal deformation of cuttin…
2025-09-02
What do the element symbols and numbers in the alloy steel grade signify?
The element symbols in alloy steel grades directly represent the main alloying elements added to the steel. These symbols are usually represented using chemical element symbols, allowing people to clearly know which alloying elements have been added t…
2025-08-26
How to understand Section shrinkage
Choosing appropriate materials is an essential step in the product development process.Although there are many material performance parameters, the main consideration is still the mechanical properties of the material, such as strength and hardness. E…
2025-08-22
Common hard alloys
Hard alloy is a composite material made by powder metallurgy process using refractory metal carbides (mainly tungsten carbide WC) and metal binders (mainly cobalt Co). It has extremely high hardness, wear resistance, red hardness, and certain impact t…
2025-08-12
Heat treatment of aluminum alloys
The role of heat treatment on aluminum and aluminum alloysHeating aluminum and aluminum alloy materials to a certain temperature and holding for a certain period of time to obtain the expected product structure and properties01 AnnealingThe product is…
2025-07-27
The method of refining crystal grains
1. IntroductionThe performance of metal materials is closely related to their internal structure, and grain size is one of the key characteristics of the structure. Fine grains can give metal materials higher strength, hardness, plasticity, and toughn…
2025-07-22
Why is adhesion considered the most fundamental property of a coating?
When discussing the value of water-based coatings, their two fundamental and core functions are to protect the substrate from environmental damage (such as corrosion, wear, UV radiation, chemicals) and to provide aesthetic decorative effects (color, g…