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正值日本热处理技术学会成立25周年之际,应邀为“热处理”纪念号发表文章,因为题目难度大,仅以热处理为中心谈些想法。一、钢的产量和质量现在世界的全部钢产量一年大体上为7亿吨,其中日本为1亿吨,约占世界产量的15%。可以认为这就是世界的全部需要量。日本和美国、西欧各国目前对钢的需要可能未超过以前的数量,可是也有人认为美国各国已到了修缮铁桥或建筑物的时期,今
At the 25th anniversary of the founding of the Japan Society of Heat Treatment Technology, he was invited to publish an article for the “Heat Treatment” commemorative sign. Because the title is so difficult, we only talk about heat treatment as the center. First, the steel production and quality Now the world’s total steel production a year is generally 700 million tons, of which Japan is 100 million tons, accounting for about 15% of world production. It can be assumed that this is the total amount of the world’s needs. At present, Japan, the United States and Western European countries may not need more steel than they used to. However, some people think that all the countries in the United States have reached the stage of repairing iron bridges or buildings. Today,