鎢錸熱電偶用途

特點

鎢(wu)(wu)錸(lai)熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)是耐(nai)高(gao)溫熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)。它(ta)具(ju)有溫度(du)一(yi)電(dian)(dian)(dian)(dian)(dian)勢線性關系好，熱(re)(re)(re)穩定(ding)性可(ke)靠(kao)，價(jia)格便宜等(deng)優點。與顯示儀表(biao)(biao)配(pei)套，可(ke)直接測(ce)量液體、蒸(zheng)汽和氣(qi)體介質等(deng)的溫度(du)。它(ta)可(ke)以(yi)部(bu)分(fen)替代鉑銠(lao)熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)作為(wei)高(gao)新(xin)冶金工(gong)業(ye)、高(gao)溫電(dian)(dian)(dian)(dian)(dian)子(zi)熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)系統結構工(gong)程及空間運載工(gong)具(ju)，核反應堆的超(chao)高(gao)溫測(ce)量工(gong)具(ju)。鎢(wu)(wu)錸(lai)熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)勢對溫度(du)的關系符合ZBN05003—88分(fen)度(du)表(biao)(biao)，等(deng)同 ASTME696—84標準。在(zai)真空、還原、惰性氣(qi)氛中(zhong)，可(ke)在(zai)0～2300℃范圍(wei)內使用(yong)。采用(yong)特殊保護管的鎢(wu)(wu)錸(lai)偶(ou)也(ye)可(ke)以(yi)在(zai)1600℃下的氧化氣(qi)氛中(zhong)長期使用(yong)，其價(jia)格較鉑銠(lao)熱(re)(re)(re)電(dian)(dian)(dian)(dian)(dian)偶(ou)低。

抗氧化

涉及一(yi)種能在氧化環境中(zhong)連續進行高溫測量的(de)抗氧化鎢錸(lai)熱(re)電偶(ou)，包括(kuo)外(wai)保護(hu)管(guan)(guan)(guan)(guan)及其內(nei)的(de)絕緣管(guan)(guan)(guan)(guan)，絕緣管(guan)(guan)(guan)(guan)中(zhong)設置有(you)鎢錸(lai)熱(re)電偶(ou)絲，在外(wai)保護(hu)管(guan)(guan)(guan)(guan)與絕緣管(guan)(guan)(guan)(guan)之間(jian)還設置有(you)內(nei)保護(hu)管(guan)(guan)(guan)(guan)，在外(wai)保護(hu)管(guan)(guan)(guan)(guan)與內(nei)保護(hu)管(guan)(guan)(guan)(guan)之間(jian)填充有(you)第一(yi)填充物，在內(nei)保護(hu)管(guan)(guan)(guan)(guan)與絕緣管(guan)(guan)(guan)(guan)之間(jian)填充有(you)第二填充物。

鎢錸熱電偶用途

生產工藝

1：預合金粉末制備

按照重(zhong)量百分(fen)(fen)(fen)比稱(cheng)負極(ji)(ji)材(cai)(cai)料(liao)和正極(ji)(ji)材(cai)(cai)料(liao)的各組分(fen)(fen)(fen)，分(fen)(fen)(fen)別制備負極(ji)(ji)材(cai)(cai)料(liao)和正極(ji)(ji)材(cai)(cai)料(liao)，采用高(gao)能分(fen)(fen)(fen)散方法(fa)，反(fan)三速度80-150r/min,分(fen)(fen)(fen)散時(shi)間15-20h

2:成型

機械壓(ya)制成(cheng)型，壓(ya)力(li)150-450Mpa,時間15-20s

3:預燒結

在還原(yuan)氣氛下1300-1500°*3h

4:垂熔

分兩(liang)段，*段：2000A*20min，第二(er)段：2800-3300A*450min

5：旋鍛：

溫度(du)1300-1600°，道次壓(ya)縮率大(da)于25%，加工尺寸范圍10%-20%