The update of modern welding technology is the innovation and upgrading of manufacturing process and technology

【Summary Description】 What is welding Welding, also known as welding, is a manufacturing process and technique for joining metals or other thermoplastic materials such as plastics by heat, high temperature or high pressure. There are many sources of energy for modern welding, including gas flame, arc, laser, electron beam, friction and ultrasonic. In addition to being used in factories, welding can also be performed in a variety of environments, such as the field, underwater and space. No matter where, welding can bring danger to the operator, so appropriate protective measures must be taken when welding. Possible injuries caused by welding include burns, electric shock, visual impairment, inhalation of toxic gases, excessive ultraviolet radiation, etc. What is welding? Welding: Simply put, it is to connect two metal or non-metal devices after treatment. There are many methods for welding together: for example, melting both ends of the two pieces and then connecting them together; Another example is to use another The melting of the material connects the two workpieces together; There are many types of classification and equipment, for example, a brief introduction: Welding of metal pipe fittings: two welding, laser welding, electromagnetic welding, diffusion welding, etc. The equipment required for welding PCB board, semiconductor tube shell packaging, micro-assembly, microwave welding, high-power module, high-power LED, etc. includes: single vacuum reflow soldering/vacuum eutectic furnace; Vacuum reflow soldering/vacuum eutectic furnace with double bubble discharge combined with positive and negative pressure, etc. Basic knowledge of welding? 1. Fusion welding-heating the workpiece to be joined to make it partially melt to form a molten pool, which will be joined after cooling and solidification. If necessary, molten filler can be added to assist. It is a Welding processing suitable for various metals and alloys without pressure. 2, pressure welding-the welding process must apply pressure to the welding parts, which belongs to the processing of various metal materials and some metal materials. 3. Brazing-metal materials with lower melting point than the base metal are used as brazing materials, liquid brazing materials are used to wet the base metal, fill the joint gap, and diffuse with the base metal to realize the link welding parts. It is suitable for Welding processing of various materials, and also suitable for Welding processing of different metals or heterogeneous materials. There are many sources of energy for modern welding, including gas flame, arc, laser, electron beam, friction and ultrasonic. In addition to being used in factories, welding can also be performed in a variety of environments, such as the field, underwater and space. No matter where, welding can bring danger to the operator, so appropriate protective measures must be taken when welding. Possible injuries from welding include burns, electric shock, visual impairment, inhalation of toxic gases, and excessive ultraviolet radiation. Before the end of the 19th century, the only welding process was metal forging welding, which was used by blacksmiths for hundreds of years. The earliest modern welding technology appeared in the late 19th century, first arc welding and oxygen gas welding, and later resistance welding. In the early 20th century, there was a great demand for military equipment in World War I and World War II, and the corresponding cheap and reliable metal connection process was paid attention to, which promoted the development of welding technology. After the war, several modern welding techniques emerged, including the most popular manual arc welding, and automatic or semi-automatic welding techniques such as gas metal arc welding, submerged arc welding (submerged arc welding), flux cored arc welding and electroslag welding. In the second half of the 20th century, the development of welding technology was changing with each passing day, and laser welding and electron beam welding were developed. Today, welding robots are widely used in industrial production. Researchers are still deeply studying the nature of welding, continue to develop new welding methods, and further improve the quality of welding. The history of metal joining dates back thousands of years, with early welding techniques found in Bronze Age and Iron Age Europe and the Middle East. The two-river civilization of ancient Babylon thousands of years ago began to use soft brazing technology. B. C., in the manufacture of 5.4 tons of ancient India Delhi iron column, people used welding technology.

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