As thermal equipment for smelting, roasting, sintering, melting, heating and other processes of materials or workpieces, relatively complete copper smelting furnaces have appeared in China as early as the Shang Dynasty in industrial furnaces, and the furnace temperature can reach 1200 °C. During the Spring and Autumn Period, with the development of technology to increase furnace temperature, cast iron appeared at that time.HIGH SPEED CIRCULAR SAWING MACHINE HY-120NCC In 1794, a straight cupola for melting cast iron appeared in the world. Then, in 1864, on the basis of Siemens (England) regenerative furnace principle, Martin (France) built the first steelmaking open hearth furnace heated by gas fuel. Through the high temperature preheating of air and gas in the regenerator, he made the furnace temperature reach the temperature above 1600 ℃ required for steelmaking.HIGH SPEED CIRCULAR SAWING MACHINE HY-150NC By the 1920s, the supply of electric energy was gradually sufficient, and various resistance furnaces, electric arc furnaces and cored induction furnaces were used in industry to achieve a wide range of applications. At the same time, the emergence of mechanized and automated furnace types has increased furnace productivity and improved working conditions to a certain extent.Metal injection molding vacuum sintering furnace In the 1950s, coreless induction furnaces developed rapidly. Later, electron beam furnaces appeared, which use electron beams to impact solid fuels, which can enhance surface heating and melt materials with high melting points.Vacuum Heat Treatment of 42CrMo Steel High Strength Bolts
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The CPHT is about having a blast on the ice with our friends and other hockey lovers. But... sometimes you just can't pull those friends away from the real world. So we've created this forum for you to find other 'Pond-minded' hockey players so that you can form a team!
Whether you're looking to build a team from scratch, just one player, or a team to coach... We bet that after a game on the pond and a cold brewski, you'll have a handful of new best friends.
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4. Trade Email addresses or contact info
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