Welding & Cutting News
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It takes hardship and patience, but it is not difficult to get started as a welder
Xinfa welding equipment has the characteristics of high quality and low price. For details, please visit: Welding & Cutting Manufacturers – China Welding & Cutting Factory & Suppliers (xinfatools.com) Welding is a relatively high-paying profession and a skilled trade. Attracted...Read more -
Difficulties and operating methods of mirror welding
1. Original record of mirror welding Mirror welding is a welding operation technology based on the principle of mirror imaging and uses mirror-assisted observation to control the welding operation process. It is mainly used for welding of welds that cannot be directly observed due to the narrow w...Read more -
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 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 -
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 -
Detailed explanation of spot welding process
01.Brief description Spot welding is a resistance welding method in which welding parts are assembled into lap joints and pressed between two electrodes, using resistance heat to melt the base metal to form solder joints. Spot welding is mainly used in the following aspects: 1. Overlap of thin pl...Read more -
After working for so many years, I may not be able to really explain the difference between CO2, MIGMAG and pulsed MIGMAG!
The concept and classification of gas metal arc welding The arc welding method that uses a molten electrode, external gas as the arc medium, and protects the metal droplets, welding pool and high-temperature metal in the welding zone is called molten electrode gas shielded arc welding. According...Read more -
What are the methods of non-destructive testing of welds， What is the difference
Non-destructive testing is the use of acoustic, optical, magnetic and electrical properties, without harming or affecting the use of the object under the premise of the performance of the object to be inspected, to detect the existence of defects or inhomogeneities in the object to be inspected, ...Read more -
This article takes you to easily understand welding defects – lamellar cracks
Welding cracks as the most harmful class of welding defects, seriously affecting the performance and safety and reliability of welded structures. Today, we will take you to recognize one of the types of cracks – laminated cracks. 01 Non-metallic inclusions, steel plate in the rolling proc...Read more
