來(lái)自中國(guó)科學(xué)技術(shù)部的消息稱,2005年11月13日,“十五”國(guó)家科技攻關(guān)計(jì)劃“PCVD大尺寸低水峰單模//getprofitprime.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(yù)制棒</a>制造工藝技術(shù)開(kāi)發(fā)”和“全合成//getprofitprime.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(yù)制棒</a>產(chǎn)業(yè)化技術(shù)”課題通過(guò)了專家驗(yàn)收。</P>
開(kāi)發(fā)大尺寸//getprofitprime.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(yù)制棒</a>制備工藝,可以減少多根預(yù)制棒的頭尾損耗,減少工藝運(yùn)輸和安裝等非必要的工時(shí),增加連續(xù)生產(chǎn)時(shí)間,提高原材料利用效率,已經(jīng)成為降低//getprofitprime.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(yù)制棒</a>及光纖成本的主攻方向。</P>
“PCVD大尺寸低水峰單模//getprofitprime.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(yù)制棒</a>制造工藝技術(shù)開(kāi)發(fā)”課題,利用PCVD工藝的獨(dú)特優(yōu)勢(shì),在傳統(tǒng)的套管法(Rod In Tube,RIT)工藝的基礎(chǔ)上試驗(yàn)新型的大套管真空拉絲(Rod In Cylinder,RIC)新工藝,已突破管內(nèi)法//getprofitprime.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(yù)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(diǎn)和OVD工藝的低成本優(yōu)勢(shì),從而在保持光纖具有優(yōu)異性能的同時(shí),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//getprofitprime.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(yù)制棒</a>,單棒拉絲長(zhǎng)度超過(guò)1,000公里。</P>
“全合成大尺寸//getprofitprime.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(yù)制棒</a>制造工藝技術(shù)開(kāi)發(fā)”課題,采用計(jì)算機(jī)模擬技術(shù)研究預(yù)制棒沉積過(guò)程中壓力場(chǎng)和溫度場(chǎng)的分布,改造關(guān)鍵生產(chǎn)設(shè)備,研制成功了具有自主知識(shí)產(chǎn)權(quán)的新型高效多重管噴燈,并設(shè)計(jì)開(kāi)發(fā)出能精確控制//getprofitprime.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(yù)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(shí)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//getprofitprime.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(yù)制棒</a>的量產(chǎn)化技術(shù)。目前,已成功制造出直徑達(dá)120mm、長(zhǎng)度1400mm的大尺寸//getprofitprime.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(yù)制棒</a>,可一次拉絲得到1300km以上光纖。大尺寸//getprofitprime.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(yù)制棒</a>全合成技術(shù),具有芯棒沉積速度高(達(dá) 6 g/min),幾何尺寸穩(wěn)定,對(duì)原料氣體純度要求較低,原材料可全部實(shí)現(xiàn)國(guó)產(chǎn)化等優(yōu)點(diǎn),有效地控制了預(yù)制棒生產(chǎn)成本,大大增強(qiáng)了產(chǎn)品市場(chǎng)競(jìng)爭(zhēng)力。</P>
以上兩項(xiàng)重大科研成果表明,我國(guó)已經(jīng)掌握了低水峰光纖及其多種//getprofitprime.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(yù)制棒</a>芯棒核心技術(shù),改變了我國(guó)//getprofitprime.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(yù)制棒</a>長(zhǎng)期依賴進(jìn)口的不利局面,為我國(guó)光纖產(chǎn)業(yè)的健康發(fā)展奠定了基礎(chǔ)。</P>