來自中國科學技術部的消息稱,2005年11月13日,“十五”國家科技攻關計劃“PCVD大尺寸低水峰單模//www.kctar.com/site/CN/Search.aspx?page=1&keywords=%e5%85%89%e7%ba%a4%e9%a2%84%e5%88%b6%e6%a3%92&column_id=ALL&station=%E5%85%A8%E9%83%A8" target="_blank">光纖預制棒</a>制造工藝技術開發(fā)”和“全合成//www.kctar.com/site/CN/Search.aspx?page=1&keywords=%e5%85%89%e7%ba%a4%e9%a2%84%e5%88%b6%e6%a3%92&column_id=ALL&station=%E5%85%A8%E9%83%A8" target="_blank">光纖預制棒</a>產(chǎn)業(yè)化技術”課題通過了專家驗收。</P>
開發(fā)大尺寸//www.kctar.com/site/CN/Search.aspx?page=1&keywords=%e5%85%89%e7%ba%a4%e9%a2%84%e5%88%b6%e6%a3%92&column_id=ALL&station=%E5%85%A8%E9%83%A8" target="_blank">光纖預制棒</a>制備工藝,可以減少多根預制棒的頭尾損耗,減少工藝運輸和安裝等非必要的工時,增加連續(xù)生產(chǎn)時間,提高原材料利用效率,已經(jīng)成為降低//www.kctar.com/site/CN/Search.aspx?page=1&keywords=%e5%85%89%e7%ba%a4%e9%a2%84%e5%88%b6%e6%a3%92&column_id=ALL&station=%E5%85%A8%E9%83%A8" target="_blank">光纖預制棒</a>及光纖成本的主攻方向。</P>
“PCVD大尺寸低水峰單模//www.kctar.com/site/CN/Search.aspx?page=1&keywords=%e5%85%89%e7%ba%a4%e9%a2%84%e5%88%b6%e6%a3%92&column_id=ALL&station=%E5%85%A8%E9%83%A8" target="_blank">光纖預制棒</a>制造工藝技術開發(fā)”課題,利用PCVD工藝的獨特優(yōu)勢,在傳統(tǒng)的套管法(Rod In Tube,RIT)工藝的基礎上試驗新型的大套管真空拉絲(Rod In Cylinder,RIC)新工藝,已突破管內(nèi)法//www.kctar.com/site/CN/Search.aspx?page=1&keywords=%e5%85%89%e7%ba%a4%e9%a2%84%e5%88%b6%e6%a3%92&column_id=ALL&station=%E5%85%A8%E9%83%A8" target="_blank">光纖預制棒</a>制造的尺寸限制。這種新型工藝綜合了PCVD光纖的高性能特點和OVD工藝的低成本優(yōu)勢,從而在保持光纖具有優(yōu)異性能的同時,大幅度地降低了光纖制造成本。研制成功的直徑大于100毫米的大尺寸低水峰單模//www.kctar.com/site/CN/Search.aspx?page=1&keywords=%e5%85%89%e7%ba%a4%e9%a2%84%e5%88%b6%e6%a3%92&column_id=ALL&station=%E5%85%A8%E9%83%A8" target="_blank">光纖預制棒</a>,單棒拉絲長度超過1,000公里。</P>
“全合成大尺寸//www.kctar.com/site/CN/Search.aspx?page=1&keywords=%e5%85%89%e7%ba%a4%e9%a2%84%e5%88%b6%e6%a3%92&column_id=ALL&station=%E5%85%A8%E9%83%A8" target="_blank">光纖預制棒</a>制造工藝技術開發(fā)”課題,采用計算機模擬技術研究預制棒沉積過程中壓力場和溫度場的分布,改造關鍵生產(chǎn)設備,研制成功了具有自主知識產(chǎn)權的新型高效多重管噴燈,并設計開發(fā)出能精確控制//www.kctar.com/site/CN/Search.aspx?page=1&keywords=%e5%85%89%e7%ba%a4%e9%a2%84%e5%88%b6%e6%a3%92&column_id=ALL&station=%E5%85%A8%E9%83%A8" target="_blank">光纖預制棒</a>芯包層幾何尺寸和折射率分布的沉積系統(tǒng),將芯棒沉積效率由30%提高到55%;同時采用激光控制系統(tǒng),大大提高了芯棒軸向穩(wěn)定性,從而成功地掌握了大尺寸//www.kctar.com/site/CN/Search.aspx?page=1&keywords=%e5%85%89%e7%ba%a4%e9%a2%84%e5%88%b6%e6%a3%92&column_id=ALL&station=%E5%85%A8%E9%83%A8" target="_blank">光纖預制棒</a>的量產(chǎn)化技術。目前,已成功制造出直徑達120mm、長度1400mm的大尺寸//www.kctar.com/site/CN/Search.aspx?page=1&keywords=%e5%85%89%e7%ba%a4%e9%a2%84%e5%88%b6%e6%a3%92&column_id=ALL&station=%E5%85%A8%E9%83%A8" target="_blank">光纖預制棒</a>,可一次拉絲得到1300km以上光纖。大尺寸//www.kctar.com/site/CN/Search.aspx?page=1&keywords=%e5%85%89%e7%ba%a4%e9%a2%84%e5%88%b6%e6%a3%92&column_id=ALL&station=%E5%85%A8%E9%83%A8" target="_blank">光纖預制棒</a>全合成技術,具有芯棒沉積速度高(達 6 g/min),幾何尺寸穩(wěn)定,對原料氣體純度要求較低,原材料可全部實現(xiàn)國產(chǎn)化等優(yōu)點,有效地控制了預制棒生產(chǎn)成本,大大增強了產(chǎn)品市場競爭力。</P>
以上兩項重大科研成果表明,我國已經(jīng)掌握了低水峰光纖及其多種//www.kctar.com/site/CN/Search.aspx?page=1&keywords=%e5%85%89%e7%ba%a4%e9%a2%84%e5%88%b6%e6%a3%92&column_id=ALL&station=%E5%85%A8%E9%83%A8" target="_blank">光纖預制棒</a>芯棒核心技術,改變了我國//www.kctar.com/site/CN/Search.aspx?page=1&keywords=%e5%85%89%e7%ba%a4%e9%a2%84%e5%88%b6%e6%a3%92&column_id=ALL&station=%E5%85%A8%E9%83%A8" target="_blank">光纖預制棒</a>長期依賴進口的不利局面,為我國光纖產(chǎn)業(yè)的健康發(fā)展奠定了基礎。</P>