China s first domestic welding machine came from there

If you understand the history of welding machines, you will know.

From Shanghai's "First Ministry of Machinery Industry.

Shanghai Electrical Apparatus Research Institute Welding Machine Research Laboratory".

The following is the information searched:

Before the liberation in 1949, there was no welding machine manufacturing industry in China. The People's Republic of China was

Later, due to the needs of economic construction, the first professional welding machine factory in China's electric welding machine industry was established in Shanghai in 1953. In the second half of 1954, the First Ministry of Machinery Industry decided to transfer Ye Yangyao and four others from the Shanghai Branch of Beijing Electric Appliance Industry Research Institute to set up a welding machine research group. After more than a year of intense preparation, in November 1955, with the approval of the first Ministry of Machinery Industry, a welding machine research group was set up in Shanghai Electric Appliance Research Institute, specializing in the research of new welding equipment, new technologies, new processes and new materials.

This is the first professional research institute for electric welding machine equipment in the history of our country.

In May 1958, the welding machine research group was renamed the welding machine research department of Shanghai Electrical Appliance Research Institute of the First Ministry of Machinery Industry. During this period, research methods.

It has gradually moved from simple surveying and mapping imitation to self-research and design. During this period, a total of 24 research projects were carried out, and 21 results were obtained. Among the achievements are China's first CO2 gas shielded welding machine, selenium rectifier welding machine, silicon rectifier welding machine, tungsten electrode pulse argon arc welding machine, tubesheet automatic argon arc welding machine, multi-electroslag welding machine, energy storage electric welding machine, etc., all of which are the first in China.

China's first inverter welding machine is produced in Shenzhen Ruiling.

1856: James Joule, an English physicist, discovered the principle of resistance welding.

1959: Deville and Debray invented oxygen-oxygen welding.

1881: The Frenchman de Meritens invented the first carbon arc welding machine.

The purpose of the electric welding machine is to use the high-temperature arc generated by the positive and negative electrodes in an instantaneous short circuit to melt the solder and the welded material on the electrode, so that the contact object is combined. Its structure is very simple, it is a high-power transformer. Welding machines can generally be divided into two types according to the type of output power supply, one is AC power supply and the other is direct current.

They use the principle of inductance, the amount of inductance will produce a huge voltage change when it is turned on and off, and the high-voltage arc generated by the positive and negative poles in the instantaneous short circuit is used to melt the solder on the electrode to make them achieve the purpose of atomic bonding.

1881: The first carbon arc welding machine was invented by the Frenchman de Meritens 1888: The Russian Hг.c Invention of metal arc welding.

1898: German Clernella. Schmidt invented copper electrode arc welding.

1919: AC welding was invented.

1923: Stordy invented hardfacing.

1926: Atomic hydrogen welding was invented by Langmuir in the United States 1930: Submerged arc welding was invented by Robinov in the former Soviet Union.

1936: Low-temperature brazing was invented by Wasserman, Switzerland.

1943: BEHL invented ultrasonic welding.

1944: British Carl invented ** welding.

1947: Electroslag welding was invented in the former Soviet Union (Bopo e Voroshevich) in 1953: Cold pressure welding was invented in the United States.

1955: 1957: Electron beam welding was invented in Schiel, France.

1957: Kazakiv of the former Soviet Union invented diffusion welding. American Thom. Clavund invents high-frequency induction welding.

1967: Continuous laser welding was invented by Arada, Japan.

In our country, welding operations need to be licensed, welders are the type of work that belongs to the access category, in the professional qualifications of skilled personnel, only five of the 81 types of work in the access category, welders are one of them, and the actual situation is that most of the industry practitioners are unlicensed operations. With the continuous standardization of technology and the relevant requirements of the industry, more and more people want to take a welding certificate, the advantage of the certificate is still very large, first of all, the salary of the certificate and the non-certificate are very different, often able to reach more than double or higher level. Therefore, the issue of short-term welder training has naturally become a concern for practitioners.

Welding as an industrial "tailor" is a very important means of processing in industrial production, the quality of welding plays a decisive role in the quality of the product, so, what is the future development of welding technology?

Industry outlook. With the development of production, welding is widely used in aerospace, aviation, nuclear industry, shipbuilding, construction and machinery manufacturing and other industrial sectors, in China's economic development, welding technology is an indispensable means of processing. After entering the 21st century, welding is an important part of the manufacturing industry, and the rapid development, so it has brought unprecedented development opportunities to the welding industry.

At present, China consumes 300 million tons of steel every year (about tons of welded structure), and needs about 750,000 welding machines, and the welding industry will continue to grow in the next 8 10 years.

1856: James Joule, an English physicist, discovered the principle of resistance welding.

More than 3,000 years BC, forging and welding technology appeared in Egypt. More than 2,000 years BC, China's Yin Dynasty used casting and welding to manufacture weapons. Before 200 B.C., China had mastered the brazing of bronze and the forging and welding of iron.

Electric welding technology is the abbreviation of arc welding technology, which is a technology that can use electrical energy, through heating and pressurization, and then make two or more weldments into one.

It is mainly divided into arc welding technology and resistance welding technology.

Arc welding technology mainly includes: hand arc welding technology, submerged arc welding technology, tungsten gas shielded arc welding technology, plasma arc welding technology, MIG/MAG arc welding technology, and tubular wire arc welding technology.

Resistance welding is mainly a type of welding method that uses resistance heat as an energy source, including electroslag welding with slag resistance heat as energy and resistance welding with solid resistance heat as energy source.

More than 3,000 years BC, forging and welding technology appeared in Egypt.

More than 2,000 years ago, Egypt was the first to have this technology, and later in the Spring and Autumn Period and the Warring States Period.

Development history of electric welding machine:

EDM enhancement was first proposed in 1943 by the former Soviet scientists Lazarenko and his wife. Later, some countries such as Europe, America, Eastern Europe, and Japan have carried out research on mountain absolutes and developed some EDM strengthening equipment. China's research and application of EDM strengthening equipment began in the 50s of the 20th century, when the Armored Forces Engineering College developed the first domestic EDM strengthening machine, which was mainly used to strengthen and repair some first-class equipment parts.

Since then, the field of application has not only expanded, but also used for surface strengthening and repair of molds, tools and machine parts.

EDM surface strengthening is to use the pulse spark discharge between the electrode material and the surface of the metal base metal to melt the electrode material to the surface of the metal workpiece to form an alloy melt permeable macro wax layer. EDM is a kind of high energy density heating, also known as EDM deposition or pulse arc microsurfacing welding, which can be used to repair the surface of parts and improve the hardness, wear resistance, corrosion resistance and hot hardness of the surface of parts.

Because the equipment is heated with high energy density, and the discharge time is shorter than the discharge interval, the melt pool is small, the heat diffusion is fast, the temperature of the parts is low during work, the core structure and performance are not changed, and the parts are not deformed after treatment. According to these characteristics, the first domestic introduction of the equipment German technology.