Search results for keyword: contraction
Several reasons for shrinkage of plastic products and improvement methods
Plastic products shrinking is a very common issue encountered in various industries. It is often caused by the rapid cooling of molten plastic or improper processing conditions. The shrinkage rate of plastic products is generally expressed in percentage, usually between 1-3%, but sometimes much hi......
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Causes and Countermeasures of Defects in Plastic Parts
Causes and Countermeasures of Defects in Plastic Parts
Plastics are widely used in our daily life, metal and glass, and it is an indispensable substance. Plastics have many advantages, such as low cost, good insulation and excellent heat resistance. At the same time, due to the special nature of ......
PCB punching quality and defect countermeasures
PCB punching quality and fault treatment strategies
Introduction
Printed circuit board (PCB) punching is a very important process in the manufacture of Printed Circuit Board (PCB) products. It is a process of punching small holes on the board according to a certain arrangement, so as to connect ......
Common bearing inner ring fixing methods
Common Bearing Inner Ring Fixing Methods
In order to prevent the bearing inner ring of the bearing from being displaced in radial and axial direction, the bearing inner ring needs to be fixed. The commonly used bearing inner ring fixing methods are as follows:
1. Withdrawable fixing method. One ......
Common sense of gear lubricating oil pump repair
The Maintenance Knowledge of Gear Oil Pump
Gear oil pumps are commonly used to lubricate various mechanical parts. In order to ensure the normal operation of mechanical parts and prolong the service life of gear oil pumps, the maintenance of gear oil pumps should be done regularly and regularly. ......
High temperature durability test
High temperature durability testing
High temperature durability testing is a test to measure the strength and stability of a material over a range of temperatures. The test checks the durability of a material under different thermal conditions and evaluates different properties such as impact res......
Solenoid valve troubleshooting
Troubleshooting of Solenoid Valves
Solenoid valve plays a important role in industrial production. Therefore, it is very important to maintain it and find out the fault in time. Here is the guide to help you troubleshoot the solenoid valve.
The first thing you should do is to check the cause of ......
Valve Leakage and Sealing Technology
Valve leakage and sealing technology
Introduction
As valve technology develops, engineers are constantly striving to reduce leakage, especially in applications that require a greater degree of accuracy and reliability. This paper will discuss the various technologies used to reduce and eliminate......
Causes of cracks in welding knives and how to prevent them
Welding is widely used in the construction industry, mechanical manufacturing and many other industries. In the welding process, many unexpected problems are often encountered, such as welding cracks, which are detrimental to the welding parts and affect the quality of the welding parts. Here we d......
Foundation pit construction dewatering
Rainfall in Foundation Pits Construction
Rain is an important climatic factor for geological engineering construction, and its influence on the safety and stability of foundation pit is particularly significant. Rainfall may lead to the accumulation of groundwater and the inflow of water into fou......
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