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28 questions and answers on welding knowledge for advanced welders（2）
15. What is the main function of gas welding powder? The main function of welding powder is to form slag, which reacts with metal oxides or non-metallic impurities in the molten pool to generate molten slag. At the same time, the generated molten slag covers the surface of the molten pool and iso...Read more -
28 questions and answers on welding knowledge for advanced welders（1）
1. What are the characteristics of the primary crystal structure of the weld? Answer: The crystallization of the welding pool also follows the basic rules of general liquid metal crystallization: the formation of crystal nuclei and the growth of crystal nuclei. When the liquid metal in the weldin...Read more -
The most basic knowledge that CNC people must master cannot be bought with money!
For the current economic CNC lathes in our country, ordinary three-phase asynchronous motors are generally used to achieve stepless speed change through frequency converters. If there is no mechanical deceleration, the spindle output torque is often insufficient at low speeds. If the cutting load...Read more -
Practical thread calculation formula, hurry up and save it
Relevant calculation formulas used in fastener production: 1. Calculation and tolerance of external thread pitch diameter of 60° profile (National Standard GB 197/196) a. Calculation of basic dimensions of pitch diameter The basic size of thread pitch diameter = thread major diameter – pitc...Read more -
CNC machining center programming instructions, if you don’t know it, come and learn it
1. pause command G04X (U)_/P_ refers to the tool pause time (feed stops, the spindle does not stop), and the value after address P or X is the pause time. The value after For example, G04X2.0; or G04X2000; pause for 2 seconds G04P2000; However, in some hole system processing instructions (such as...Read more -
The top ten problems that are most easily overlooked in welding. Details determine success or failure. Please read it patiently.
There are many things that need to be paid attention to during the welding process. If ignored, it may lead to big mistakes. Details determine success or failure, please read it patiently! 1 Don’t pay attention to choosing the best voltage during welding construction [Phenomena] During welding, ...Read more -
How to weld heat-resistant steel The welding process is here to tell you
Heat-resistant steel refers to steel that has both thermal stability and thermal strength under high temperature conditions. Thermal stability refers to the ability of steel to maintain chemical stability (corrosion resistance, non-oxidation) under high temperature conditions. Thermal strength r...Read more -
Causes and preventive measures of welding pores in J507 electrode
Porosity is the cavity formed when the bubbles in the molten pool fail to escape during solidification during welding. When welding with J507 alkaline electrode, there are mostly nitrogen pores, hydrogen pores and CO pores. The flat welding position has more pores than other positions; there are...Read more -
For basic knowledge of cutting tools, just read this article
A good horse needs a good saddle and uses advanced CNC machining equipment. If the wrong tools are used, it will be useless! Selecting the appropriate tool material has a great impact on tool service life, processing efficiency, processing quality and processing cost. This article provides useful...Read more -
Do you really understand the structure of milling cutters
Milling cutters are used a lot. Do you really understand the structure of milling cutters? Let’s find out through an article today. 1. Main geometric angles of indexable milling cutters The milling cutter has a leading angle and two rake angles, one is called the axial rake angle and the other is...Read more -
7 tips for CNC tool setting that will last a lifetime
Tool setting is the main operation and important skill in CNC machining. Under certain conditions, the accuracy of tool setting can determine the machining accuracy of parts. At the same time, tool setting efficiency also directly affects CNC machining efficiency. It is not enough to just know th...Read more -
The difference between fixed welding joints, rotating welding joints and prefabricated welding joints in pipeline welding
No matter where the welding joint is, it is actually an accumulation of welding experience. For beginners, simple positions are the basic exercises, starting with rotating ones and then moving on to fixed position exercises. The counterpart to fixed welding in pipeline welding is rotational weldi...Read more
