The reactor is greater than 12% chromium steel. Reactor has been made since the 1912 invention of the rapid development of the world still has a rate of 3-5% per year. The world's total consumption of the reactor reached 35 million. China is in the reactor production and consumer applications, high-speed growth period, has been widely used in petroleum, chemical industry, light industry, food, wine, pharmaceutical, household appliances, utilities, machinery, construction, municipal and civil equipment in all. 1990 China's consumption of the reactor is 26 million tons in 1999 to 153 tons in 2000 to 1.73 million tons in 2001 to 2.25 million tons in 2004, consumption of the reactor reached 4.47 million tons, ranking first in the world position, the reactor is expected in 2006 consumption will reach 600 million tons, of which chromium nickel austenitic reactor reactor consumer's total consumption accounted for 75% -80%.

China started to develop from the fifties and production reactor electrode, in 1997 China's total output electrode reactor to 7000 tons. In recent years, China's consumption of reactor rapid growth in 2004, reactor rod has been made more than 35,000 tons, made in 2006 is expected to reach 50,000 tons reactor rod around.

Since the 1950s started to develop the reactor electrode, mainly followed the former Soviet Union titania slag and raw materials system, it has a low cost, easy to press coated, anti-porosity, mechanical properties and good, but similar reactions with the European brand name Welding Electrodes compared to red kettle serious, big splash, slag removal and forming poor welding low efficiency, wastage, so since the mid-seventies to early eighties, imports for the domestic companies in Sweden AVESTA Green P5 electrode some domestic research institutions together with the electrode manufacturer, welding on the reactor off drugs cause skin redness and solution have been studied, such as Ha and welding the welding electrode factory in Tianjin, Gansu, great work and welding under blue Chau Chang, Taiyuan University of Technology and Shanxi Machine Tool Plant, etc.

1980s, several papers have published the above, people on the one hand it makes sense that their research work, get a lot of progress; the other hand, developed by several electrodes in this practical test, but also with foreign products that are still significant gaps, but since then, the domestic research in this area work on the situation in anything less from the early 1980s to the early nineties within a decade because there is no amount of research literature electrode reactor. From the early 1990s, the domestic research reactor is becoming more active electrode. King Po Taiyuan first work, Sun and others in the salt on the basis of previous work studied the reactor design of the basic principles of welding technology and ways to design the reactor electrodes made an important breakthrough in theory, and therefore won the 2000 national science and technology two prize; after the Ministry of Metallurgical Research Institute Tangbo steel construction in the mid-absorbing foreign advanced technology, new reactor successful domestic series of electrodes to improve improve and successfully set up Beijing Jinwei Welding Material Co., Ltd., so that the perfect combination of theory and practice, since the beginning of 1994, production date, production has reached its reactor electrode annual output of 3,000 tons.

In the late nineties to the beginning of this century, the domestic reactor electrodes carried out the research mushroomed, although its level did not exceed their current level of these two, but for active academic atmosphere, strengthen exchanges and still benefit.

Foreign industrial production reactor began in the early twenties, followed by the corresponding electrode reactor, the reactor electrode mature product appeared in around 1965, representatives of European countries, especially Western Europe, Sweden, a population of only about 8 million and a concentration of ESAB, AVESTA and SANDVIK other world-class reactor welding business, which the Bison AVESTA reactor rod electrode is a model of the world's reactors. Japan, Taiwan and South Asian countries have the technology base electrode reactor in Europe.

keywords: Copper Brazing Alloys