av网站免费观看_无遮挡h肉动漫_天堂在线WWW天堂在线最新版_欧美亚洲综合视频_国产孩交_野花视频在线观看免费视频

Welcome to Shouguang KangPeng Chemical Co.,Ltd.
China | En

Tel:
400-097-7001

Navigation
News Center

Contact Us

Unit Name: Shouguang Kang Peng Chemical Co.Ltd.
Address: Shouguang Hou town project area
Contact: Gengjing Li
Mobile:13706464559
Tel:0536-5396066
E-mail:mhjgsz@163.com
Website:www.www.vxcdc.cn
National free customer service telephone : 400-0977-001

News Center Location:Home > News Center

Quartz glass history

quartz glass abroad more than 160 years of history, 1839 Frenchman first with hydrogen flame fused quartz quartz glass, in 1902 the British used graphite rod is energized to get high (called single-rod electric furnaces) manufacturing quartz glass, 1940s invented the fused even furnaces, semiconductor technology and 1950s with the development of new electric light (need a lot of quartz glass), quartz glass it has rapidly developed. Because quartz glass production technology is difficult, until now able to mass production of quartz glass only country the United States, Germany, France, Japan, Britain, China and a few other countries. 
quartz glass of research began in 1957, before the establishment of the People's Republic is blank. 1956 National Science and Technology Development Plan formulated 12 years, requires the development of national defense needed 57 key research tasks, solve two bombs and one satellite with the new high-performance materials for the study of atomic bombs, missiles, satellites do physical preparation. Quartz glass is the first 26 and second 40 tasks designated to study the contents of the book, the task is assigned to the then National Building Materials Research Institute. The development of quartz glass can be divided into five phases 1957 and 1961 for the pioneering stage, the main method to study the manufacturing process; 1962-1966 for the formation of industrial phase, during which many military tasks to complete, civilian production and quality has greatly improved, has formed industry; period 1978-1988 for the reform and innovation, high-tech quartz glass, such as: LSI with high-purity quartz glass tube high temperature, high purity coating crucible, crucible arc discharge method, optical communications quartz glass, quartz glass laser are studied in this period and mass production; 1989-2000 for the introduction of foreign advanced technology, technological innovation, increasing the variety and yield period of great development, the most prominent is Donghai County become electric light quartz glass production base with an annual output of 6,000 tons of quartz glass (including quality product than 2,000 tons), greatly improve the quality and cost several times down significantly improved technical equipment. 40 years, the development of quartz glass faster to produce transparent quartz glass as an example: 1975 annual output of 172 tons, 31 factories need to use more than 60 resistance furnace production, poor quality tubes (equivalent to the current waste pipe ), and now two years even furnaces can produce nearly 200 tons, by 2000, annual production of transparent quartz glass tube 7000 tons (including high-quality products amounted to 3,500 tons), an increase of nearly 25 years, 40 times.

Quartz glass history 2017/10/31 15:38:57 Hot:
Next:Quartz tube, fused quartz gas refining mound, types Prev:Performance quartz glass
erweima

Sweep into the mobile station

Unit Name: Shouguang Kang Peng Chemical Co.Ltd.
Address: Shouguang Hou town project area    Contact: Gengjing Li    Mobile: 13706464559
Tel: 0536 -5396066    mail: mhjgsz@163.com    Website: www.www.vxcdc.cn
National free customer service telephone : 400-0977-001
Technical Support:QiHua Net    case number:魯ICP備12032401號-1

主站蜘蛛池模板: 久久的视频 | 国产精品国产三级在线专区 | 国产一级片免费播放 | 伊人精品在线观看 | 老头老太做爰xxx视频 | 日韩高清成人 | 中文字幕激情视频 | 蜜桃网在线观看 | 波多野结衣AV最新作品在线观看 | 色欧美自拍视频 | 精品久久国产老人久久综合 | 成人毛片免费在线观看 | 午夜骚片 | 国产欧美一区二区三区精品酒店 | 午夜精品久久久久久久四虎 | 国产欧美日韩亚洲精品区 | 最新中文字幕在线播放 | 97成人超碰| 成人免费网址 | 少妇一晚三次一区二区三区 | 国产欧美视频一区二区三区 | 中文字幕日韩无 | 日韩av网站免费 | 天天操天天操天天操天天操天天操 | 成人啪啪免费网站 | 九七国产精品 | 黄色一级视频免费看 | 18无套直女仆视频 | 亚洲国产精品美女久久久 | 国产色诱视频在线播放丝袜 | 亚洲中文字幕精品一区二区三区 | 爆操美女网站 | 亚洲日本VA在线视频观看 | 天堂亚洲精品 | 国产美女精品在线观看 | 成人av地址| 一级中文片 | 日韩精品无码熟人妻视频 | 人妻聚色窝窝人体WWW一区 | 两个领导在车里吃我奶 | 一区二区三区高清不卡 |