機(jī)械類中英文論文-展示頁
2025-07-02 20:35本頁面
【正文】 g condition of quality inspection. In 1979, scientific research institute of China academy of railway and mechanical institute of highpower diesel engine cylinder collaboration of surface modification of laser. In 1979, Beijing institute of electrical carbon dioxide laser is developed, and the kilowatt in early 1980s respectively applied in cylinder and stamp printing equipments of laser treatment. Among them, tsinghua university, Beijing, Beijing institute of electrical YouPiaoChang jointly pleted YouPiaoChang seven color machine DaKongQi laser surface strengthening research. From 1984 to 1990, Beijing institute of vacuum heat treatment research, gas carburizing microputer control technology (Beijing university of aeronautics amp。s first national machinery development. Chinese mechanical engineering technology not only has a long history and splendid achievements in Chinese is not only the material culture and social economic development plays an important role in the world, and to promote the progress of civilization, technology has made great contribution to Chinese traditional machine. And in a long period ahead in the world. In modern times, especially from the early 18th century, due to the nineteen forties, due to the economic and social reasons, such as the China machinery industry, stagnation, in the 100 years is western bourgeois political revolution and industrial revolution, mechanical science and technology is developing rapidly, and far more than the level of China. So, China mechanical development level and the western gap widens, sharply to the 19th century middle behind western one hundred years.After the founding of new China, especially in the past 30 years, our country39?？梢?，我國機(jī)械發(fā)展在近代發(fā)展其迅速。 80年代初，北京城建設(shè)計(jì)院等完成液化石油氣移動(dòng)式氣壓焊軌技術(shù)的研究和應(yīng)用。1968年，該廠開始以液化石油氣代替乙炔切割。1964年，用直流鎢極氬弧焊及焊絲合金化技術(shù)解決了核工業(yè)用傾斜式電解糟純鎳焊接。 焊接與切割 1949年，北京已有氣焊、電弧焊及氧乙炔火焰切割等手工作業(yè)。其中，清華大學(xué)、北京市機(jī)電研究院、北京郵票廠共同完成郵票廠七色機(jī)打孔器表面激光強(qiáng)化研究。1979年，鐵道科學(xué)研究院和中國科學(xué)院力學(xué)研究所等合作完成大功率柴油機(jī)缸套表面的激光改性處理的研究。1969年，北京量具刃具廠開始采用光亮淬火。 1956年，北京第一機(jī)床廠開始采用高頻感應(yīng)淬火。 80年代，北京市機(jī)電研究院和北京市模具中心研制出一系列高精度多工位沖裁模具，接近或達(dá)到進(jìn)口模具水平，改變了北京精密沖裁模具依賴進(jìn)口的局面。1971年，該廠制造出6000噸水壓機(jī)，這是當(dāng)時(shí)北京最大的鍛壓設(shè)備。 1985～1988年，北京機(jī)床研究所試驗(yàn)成功浮動(dòng)端面密封環(huán)的壓力鑄造工藝。 1980 年，北京市機(jī)電研究院與北京瑪鋼廠研制成功工頻無芯塞桿底注式保溫澆注電爐。1955年，北京第一機(jī)床廠開始采用漏模造型、雙面模型型板及鐵型板和標(biāo)準(zhǔn)砂箱造型。 明永樂年間(1403～1424年)，北京制造出享譽(yù)世界的明永樂大銅鐘()和鐘樓大銅鐘(63噸)及鐵鐘(25噸)，采用分爐熔化、地坑造型和陶范法鑄造。 振動(dòng)沖擊夯和振動(dòng)平板夯在我國的成功開發(fā)，不僅為我國建設(shè)施工部門提供了性能先進(jìn)的夯實(shí)機(jī)械，取得了良好的經(jīng)濟(jì)效益和社會(huì)效益，而且使我國夯實(shí)機(jī)械技術(shù)向前跨進(jìn)了一大步，縮短了與世界先進(jìn)水平的差距，促進(jìn)了我國壓實(shí)機(jī)械的發(fā)展。振動(dòng)沖擊夯雖然比振動(dòng)平板夯開發(fā)晚，但發(fā)展速度、產(chǎn)銷量和使用廣泛性比振動(dòng)平板夯大得多，目前已成為我國夯實(shí)機(jī)械中產(chǎn)銷量最大的主導(dǎo)產(chǎn)品。 1983年，長(zhǎng)沙建設(shè)機(jī)械研究所和湖北振動(dòng)器廠
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