氣(qi)(qi)(qi)液(ye)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)的(de)(de)速率和轉(zhuan)化(hua)(hua)率等往往取決于(yu)氣(qi)(qi)(qi)液(ye)兩(liang)相(xiang)(xiang)的(de)(de)接(jie)(jie)觸(chu)面(mian)積(ji)。這(zhe)兩(liang)類氣(qi)(qi)(qi)液(ye)相(xiang)(xiang)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)器(qi)氣(qi)(qi)(qi)液(ye)相(xiang)(xiang)接(jie)(jie)觸(chu)面(mian)積(ji)都非常大，其內表面(mian)積(ji)均接(jie)(jie)近20000m2/m3，比(bi)傳(chuan)統(tong)的(de)(de)氣(qi)(qi)(qi)液(ye)相(xiang)(xiang)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)器(qi)大一(yi)(yi)(yi)個數量級。“創(chuang)闊(kuo)(kuo)(kuo)科(ke)技(ji)”“創(chuang)闊(kuo)(kuo)(kuo)科(ke)技(ji)”氣(qi)(qi)(qi)液(ye)固(gu)三(san)相(xiang)(xiang)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)在(zai)化(hua)(hua)學反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)中也比(bi)較(jiao)常見，種類較(jiao)多，在(zai)大多數情況下(xia)(xia)固(gu)體(ti)為催(cui)(cui)(cui)化(hua)(hua)劑，氣(qi)(qi)(qi)體(ti)和液(ye)體(ti)為反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)物(wu)(wu)或(huo)產物(wu)(wu)，美國麻省理工學院(yuan)發展了(le)一(yi)(yi)(yi)種用(yong)于(yu)氣(qi)(qi)(qi)液(ye)固(gu)三(san)相(xiang)(xiang)催(cui)(cui)(cui)化(hua)(hua)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)的(de)(de)微(wei)(wei)(wei)(wei)(wei)填充(chong)床(chuang)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)器(qi)，其結構類似(si)于(yu)固(gu)定床(chuang)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)器(qi)，在(zai)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)室(微(wei)(wei)(wei)(wei)(wei)通(tong)道(dao)(dao))中填充(chong)了(le)催(cui)(cui)(cui)化(hua)(hua)劑固(gu)定顆(ke)粒，氣(qi)(qi)(qi)相(xiang)(xiang)和液(ye)相(xiang)(xiang)被(bei)分成若(ruo)干流(liu)股，再(zai)經管匯到反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)室中混合進行催(cui)(cui)(cui)化(hua)(hua)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)。麻省理工學院(yuan)還嘗試對該微(wei)(wei)(wei)(wei)(wei)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)器(qi)進行“放大”，將10個微(wei)(wei)(wei)(wei)(wei)填充(chong)床(chuang)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)器(qi)并聯(lian)在(zai)一(yi)(yi)(yi)起，在(zai)維持產量不變的(de)(de)情況下(xia)(xia)，大大減(jian)小了(le)微(wei)(wei)(wei)(wei)(wei)填充(chong)床(chuang)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)器(qi)的(de)(de)壓力降。“創(chuang)闊(kuo)(kuo)(kuo)科(ke)技(ji)”氣(qi)(qi)(qi)液(ye)固(gu)三(san)相(xiang)(xiang)催(cui)(cui)(cui)化(hua)(hua)微(wei)(wei)(wei)(wei)(wei)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)器(qi)-充(chong)填活性(xing)(xing)炭催(cui)(cui)(cui)化(hua)(hua)劑的(de)(de)微(wei)(wei)(wei)(wei)(wei)填充(chong)床(chuang)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)器(qi)“創(chuang)闊(kuo)(kuo)(kuo)科(ke)技(ji)”氣(qi)(qi)(qi)液(ye)固(gu)三(san)相(xiang)(xiang)催(cui)(cui)(cui)化(hua)(hua)微(wei)(wei)(wei)(wei)(wei)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)器(qi)-并聯(lian)微(wei)(wei)(wei)(wei)(wei)填充(chong)床(chuang)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)器(qi)系(xi)統(tong)“創(chuang)闊(kuo)(kuo)(kuo)科(ke)技(ji)”“創(chuang)闊(kuo)(kuo)(kuo)科(ke)技(ji)”電(dian)化(hua)(hua)學微(wei)(wei)(wei)(wei)(wei)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)器(qi)屬于(yu)液(ye)相(xiang)(xiang)微(wei)(wei)(wei)(wei)(wei)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)器(qi)，而(er)光化(hua)(hua)學微(wei)(wei)(wei)(wei)(wei)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)器(qi)其反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)物(wu)(wu)既有液(ye)相(xiang)(xiang)也有氣(qi)(qi)(qi)相(xiang)(xiang)的(de)(de)，由于(yu)它們都有其特殊性(xing)(xing)，故不能(neng)簡單(dan)的(de)(de)劃為液(ye)相(xiang)(xiang)微(wei)(wei)(wei)(wei)(wei)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)器(qi)或(huo)氣(qi)(qi)(qi)相(xiang)(xiang)微(wei)(wei)(wei)(wei)(wei)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)器(qi)，而(er)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)單(dan)獨列(lie)為一(yi)(yi)(yi)類。高效微(wei)(wei)(wei)(wei)(wei)通(tong)道(dao)(dao)反(fan)(fan)(fan)(fan)(fan)(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)(ying)(ying)器(qi)加工聯(lian)系(xi)創(chuang)闊(kuo)(kuo)(kuo)金屬科(ke)技(ji)。無錫微(wei)(wei)(wei)(wei)(wei)通(tong)道(dao)(dao)換熱(re)器(qi)

創闊(kuo)(kuo)能(neng)源科(ke)技微(wei)(wei)通道加(jia)工材(cai)質(zhi)的(de)(de)選擇在(zai)低(di)介(jie)質(zhi)流量(liang)時,熱(re)(re)(re)(re)阻控制區(qu)為低(di)熱(re)(re)(re)(re)導(dao)(dao)率(lv)區(qu)。因此低(di)熱(re)(re)(re)(re)導(dao)(dao)率(lv)材(cai)料(liao)換(huan)(huan)熱(re)(re)(re)(re)器(qi)(qi)(如(ru)玻璃(li))的(de)(de)換(huan)(huan)熱(re)(re)(re)(re)效率(lv)要明(ming)顯高(gao)于諸如(ru)金(jin)屬等具高(gao)熱(re)(re)(re)(re)導(dao)(dao)率(lv)的(de)(de)換(huan)(huan)熱(re)(re)(re)(re)器(qi)(qi)。在(zai)高(gao)介(jie)質(zhi)流量(liang)時,對(dui)(dui)于結構參數(shu)一定的(de)(de)換(huan)(huan)熱(re)(re)(re)(re)器(qi)(qi),隨操作流量(liang)的(de)(de)增加(jia),導(dao)(dao)熱(re)(re)(re)(re)熱(re)(re)(re)(re)阻對(dui)(dui)換(huan)(huan)熱(re)(re)(re)(re)效率(lv)的(de)(de)影響逐(zhu)漸增強,高(gao)效換(huan)(huan)熱(re)(re)(re)(re)區(qu)也(ye)向(xiang)高(gao)熱(re)(re)(re)(re)導(dao)(dao)率(lv)方向(xiang)移動,換(huan)(huan)熱(re)(re)(re)(re)器(qi)(qi)材(cai)料(liao)可用熱(re)(re)(re)(re)導(dao)(dao)率(lv)相對(dui)(dui)較低(di)的(de)(de)金(jin)屬材(cai)料(liao)(如(ru)不銹(xiu)鋼)。Bier等對(dui)(dui)錯流式(shi)微(wei)(wei)通道換(huan)(huan)熱(re)(re)(re)(re)器(qi)(qi)內(nei)氣-氣換(huan)(huan)熱(re)(re)(re)(re)特性進行了數(shu)值分析和實驗研究,結果表(biao)明(ming),不銹(xiu)鋼微(wei)(wei)通道換(huan)(huan)熱(re)(re)(re)(re)器(qi)(qi)的(de)(de)換(huan)(huan)熱(re)(re)(re)(re)效率(lv)高(gao)于銅微(wei)(wei)換(huan)(huan)熱(re)(re)(re)(re)器(qi)(qi)。無錫微(wei)(wei)通道換(huan)(huan)熱(re)(re)(re)(re)器(qi)(qi)工業多層換(huan)(huan)熱(re)(re)(re)(re)器(qi)(qi)設計加(jia)工創闊(kuo)(kuo)科(ke)技。

創闊能(neng)(neng)源科技制(zhi)(zhi)作的(de)(de)微(wei)(wei)化工反(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)器的(de)(de)特(te)點(dian)，對反(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)時間(jian)(jian)(jian)的(de)(de)精確控(kong)制(zhi)(zhi)：常規的(de)(de)單鍋反(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)，往(wang)往(wang)采用逐漸滴加反(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)物，以防止反(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)過(guo)于(yu)劇烈，這就(jiu)造成(cheng)一(yi)部分先加入(ru)的(de)(de)反(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)物停(ting)留(liu)時間(jian)(jian)(jian)過(guo)長。對于(yu)很(hen)多反(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)，反(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)物、產(chan)物或中(zhong)間(jian)(jian)(jian)過(guo)渡態產(chan)物在(zai)(zai)反(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)條(tiao)件下(xia)停(ting)留(liu)時間(jian)(jian)(jian)一(yi)長就(jiu)會導致(zhi)副產(chan)物的(de)(de)產(chan)生。而微(wei)(wei)反(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)器技術采取的(de)(de)是微(wei)(wei)管道中(zhong)的(de)(de)連(lian)續(xu)(xu)流(liu)動反(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)，可(ke)以精確控(kong)制(zhi)(zhi)物料(liao)在(zai)(zai)反(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)條(tiao)件下(xia)的(de)(de)停(ting)留(liu)時間(jian)(jian)(jian)。一(yi)旦達到(dao)比較好反(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)時間(jian)(jian)(jian)就(jiu)立即傳遞到(dao)下(xia)一(yi)步或終止反(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)，這樣就(jiu)能(neng)(neng)有(you)效消(xiao)除因反(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)時間(jian)(jian)(jian)長而產(chan)生的(de)(de)副產(chan)物。結構保證(zheng)安(an)全(quan)性(xing)：由于(yu)換(huan)熱(re)效率極高，即使反(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)突然釋放(fang)大量(liang)熱(re)量(liang)，也可(ke)以被吸收，從而保證(zheng)反(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)溫度(du)在(zai)(zai)設(she)定(ding)范(fan)圍內，很(hen)大程(cheng)度(du)地減(jian)少(shao)了發生安(an)全(quan)事(shi)故和質量(liang)事(shi)故的(de)(de)可(ke)能(neng)(neng)性(xing)。而且(qie)微(wei)(wei)反(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)器采用連(lian)續(xu)(xu)動反(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)，在(zai)(zai)反(fan)(fan)應(ying)(ying)(ying)(ying)(ying)(ying)器中(zhong)停(ting)留(liu)的(de)(de)化學品量(liang)很(hen)少(shao)，即使萬(wan)一(yi)失控(kong)，危(wei)害程(cheng)度(du)也非常有(you)限。

創闊科技(ji)微(wei)(wei)(wei)通道(dao)是微(wei)(wei)(wei)型(xing)設備的關鍵部位。為(wei)了(le)滿足高效(xiao)傳(chuan)熱、傳(chuan)質和化(hua)學反應的要(yao)(yao)求(qiu),必須實現高性能機械(xie)表(biao)面的加(jia)工(gong)(gong)(gong)制(zhi)(zhi)(zhi)造,其中包括金屬材料(liao)制(zhi)(zhi)(zhi)造各種(zhong)異形(xing)(xing)微(wei)(wei)(wei)槽道(dao)的技(ji)術,金屬表(biao)面制(zhi)(zhi)(zhi)造催(cui)化(hua)劑載體的技(ji)術等。常規(gui)微(wei)(wei)(wei)系統微(wei)(wei)(wei)通道(dao)的加(jia)工(gong)(gong)(gong)制(zhi)(zhi)(zhi)造技(ji)術主要(yao)(yao)有以(yi)下4大類(lei):(1)IC技(ji)術:從大規(gui)模集成(cheng)(cheng)電(dian)路(lu)(IC工(gong)(gong)(gong)藝)發展起來的平面加(jia)工(gong)(gong)(gong)工(gong)(gong)(gong)藝和體加(jia)工(gong)(gong)(gong)工(gong)(gong)(gong)藝,所使用的材料(liao)以(yi)單(dan)晶硅及在其上形(xing)(xing)成(cheng)(cheng)微(wei)(wei)(wei)米級厚(hou)的薄膜為(wei)主,通過氧化(hua)、化(hua)學氣相沉積、濺射等方(fang)法形(xing)(xing)成(cheng)(cheng)薄膜;再通過光(guang)刻(ke)、腐(fu)蝕特別是各向(xiang)異性腐(fu)蝕、層腐(fu)蝕等方(fang)法形(xing)(xing)成(cheng)(cheng)各種(zhong)形(xing)(xing)狀的微(wei)(wei)(wei)型(xing)機械(xie)。雖然IC工(gong)(gong)(gong)藝的成(cheng)(cheng)熟性決定(ding)了(le)它(ta)目前在微(wei)(wei)(wei)機械(xie)領域中的主導地位,但這種(zhong)表(biao)面微(wei)(wei)(wei)加(jia)工(gong)(gong)(gong)技(ji)術適合于(yu)硅材料(liao),并(bing)限于(yu)平面結構,厚(hou)度很薄,限制(zhi)(zhi)(zhi)了(le)應用范圍(wei)。創闊科技(ji)制(zhi)(zhi)(zhi)作(zuo)微(wei)(wei)(wei)結構，微(wei)(wei)(wei)通道(dao)換熱器(qi)，也(ye)可以(yi)根據需要(yao)(yao)設計制(zhi)(zhi)(zhi)作(zuo)。

創闊能源科(ke)技臨(lin)界熱(re)(re)(re)(re)(re)(re)流(liu)(liu)密(mi)(mi)度(du)對(dui)(dui)于(yu)有相變的(de)(de)(de)換(huan)(huan)熱(re)(re)(re)(re)(re)(re),微(wei)(wei)通(tong)(tong)(tong)(tong)道(dao)(dao)(dao)中(zhong)的(de)(de)(de)臨(lin)界熱(re)(re)(re)(re)(re)(re)流(liu)(liu)密(mi)(mi)度(du)現象不(bu)同(tong)于(yu)常(chang)規(gui)通(tong)(tong)(tong)(tong)道(dao)(dao)(dao)。微(wei)(wei)通(tong)(tong)(tong)(tong)道(dao)(dao)(dao)中(zhong)臨(lin)界熱(re)(re)(re)(re)(re)(re)流(liu)(liu)密(mi)(mi)度(du)的(de)(de)(de)產生(sheng)是由于(yu)微(wei)(wei)通(tong)(tong)(tong)(tong)道(dao)(dao)(dao)的(de)(de)(de)蒸(zheng)汽(qi)(qi)阻塞。在達到(dao)臨(lin)界熱(re)(re)(re)(re)(re)(re)流(liu)(liu)密(mi)(mi)度(du)之前,微(wei)(wei)通(tong)(tong)(tong)(tong)道(dao)(dao)(dao)的(de)(de)(de)流(liu)(liu)動和傳(chuan)熱(re)(re)(re)(re)(re)(re)主要是周(zhou)期(qi)性的(de)(de)(de)過冷流(liu)(liu)動沸(fei)騰,從微(wei)(wei)通(tong)(tong)(tong)(tong)道(dao)(dao)(dao)逸出(chu)的(de)(de)(de)汽(qi)(qi)泡(pao)和進入(ru)微(wei)(wei)通(tong)(tong)(tong)(tong)道(dao)(dao)(dao)的(de)(de)(de)液體反復交替沖刷微(wei)(wei)通(tong)(tong)(tong)(tong)道(dao)(dao)(dao)。一(yi)旦達到(dao)臨(lin)界熱(re)(re)(re)(re)(re)(re)流(liu)(liu)密(mi)(mi)度(du),微(wei)(wei)通(tong)(tong)(tong)(tong)道(dao)(dao)(dao)中(zhong)的(de)(de)(de)流(liu)(liu)動和傳(chuan)熱(re)(re)(re)(re)(re)(re)主要是一(yi)個蒸(zheng)汽(qi)(qi)周(zhou)期(qi)性逸出(chu)的(de)(de)(de)過程(cheng)。一(yi)直(zhi)持續到(dao)過熱(re)(re)(re)(re)(re)(re)蒸(zheng)汽(qi)(qi)的(de)(de)(de)出(chu)現,直(zhi)到(dao)整(zheng)個微(wei)(wei)通(tong)(tong)(tong)(tong)道(dao)(dao)(dao)被過熱(re)(re)(re)(re)(re)(re)蒸(zheng)汽(qi)(qi)阻塞。入(ru)口(kou)(kou)段效(xiao)(xiao)應Nusselt數隨無量綱加熱(re)(re)(re)(re)(re)(re)長度(du)Lh的(de)(de)(de)增加而減小。而對(dui)(dui)于(yu)常(chang)規(gui)尺度(du)下圓管內層流(liu)(liu)換(huan)(huan)熱(re)(re)(re)(re)(re)(re),當(dang)Lh=,換(huan)(huan)熱(re)(re)(re)(re)(re)(re)趨于(yu)充分發展狀態(tai),Nusselt數趨于(yu)定(ding)值。根據Lh的(de)(de)(de)取(qu)值范(fan)圍≤Lh≤,可(ke)以(yi)計算得到(dao)換(huan)(huan)熱(re)(re)(re)(re)(re)(re)入(ru)口(kou)(kou)段長度(du)占總通(tong)(tong)(tong)(tong)道(dao)(dao)(dao)長度(du)的(de)(de)(de)百分比為。入(ru)口(kou)(kou)段效(xiao)(xiao)應對(dui)(dui)工質換(huan)(huan)熱(re)(re)(re)(re)(re)(re)的(de)(de)(de)影響十分。超零界換(huan)(huan)熱(re)(re)(re)(re)(re)(re)器設計加工，創闊科(ke)技。無錫微(wei)(wei)通(tong)(tong)(tong)(tong)道(dao)(dao)(dao)換(huan)(huan)熱(re)(re)(re)(re)(re)(re)器

微通(tong)道換熱器(qi)部件加工創闊科(ke)技。無(wu)錫微通(tong)道換熱器(qi)

青銅和各種(zhong)金屬(shu)(shu)等(deng)(deng)等(deng)(deng)。這還(huan)遠(yuan)不是真(zhen)空擴(kuo)散(san)(san)(san)焊(han)(han)(han)(han)(han)所(suo)(suo)能(neng)夠焊(han)(han)(han)(han)(han)接(jie)(jie)材料(liao)(liao)的(de)全部。真(zhen)空擴(kuo)散(san)(san)(san)焊(han)(han)(han)(han)(han)接(jie)(jie)的(de)主(zhu)要焊(han)(han)(han)(han)(han)接(jie)(jie)參數有：溫(wen)(wen)度(du)(du)(du)、壓(ya)(ya)力(li)(li)、保(bao)溫(wen)(wen)擴(kuo)散(san)(san)(san)時(shi)(shi)間(jian)(jian)和保(bao)護氣氛，冷(leng)(leng)卻過程(cheng)中(zhong)(zhong)有相(xiang)變(bian)的(de)材料(liao)(liao)以及(ji)陶瓷等(deng)(deng)脆性材料(liao)(liao)的(de)擴(kuo)散(san)(san)(san)焊(han)(han)(han)(han)(han)，還(huan)應控制加(jia)(jia)熱和冷(leng)(leng)卻速度(du)(du)(du)。1、溫(wen)(wen)度(du)(du)(du)：系擴(kuo)散(san)(san)(san)焊(han)(han)(han)(han)(han)重要的(de)焊(han)(han)(han)(han)(han)接(jie)(jie)參數。在溫(wen)(wen)度(du)(du)(du)范(fan)圍內，擴(kuo)散(san)(san)(san)過程(cheng)隨溫(wen)(wen)度(du)(du)(du)的(de)提高(gao)(gao)(gao)(gao)而加(jia)(jia)快(kuai)，接(jie)(jie)頭強(qiang)(qiang)度(du)(du)(du)也(ye)能(neng)相(xiang)應增(zeng)加(jia)(jia)。但(dan)溫(wen)(wen)度(du)(du)(du)的(de)提高(gao)(gao)(gao)(gao)受工(gong)夾(jia)具高(gao)(gao)(gao)(gao)溫(wen)(wen)強(qiang)(qiang)度(du)(du)(du)、焊(han)(han)(han)(han)(han)件(jian)(jian)的(de)相(xiang)變(bian)和再結晶等(deng)(deng)條件(jian)(jian)所(suo)(suo)限(xian)，而且溫(wen)(wen)度(du)(du)(du)高(gao)(gao)(gao)(gao)于(yu)值后，對(dui)接(jie)(jie)頭質量(liang)(liang)的(de)影響就不大(da)(da)(da)了。故多數金屬(shu)(shu)材料(liao)(liao)固(gu)(gu)相(xiang)擴(kuo)散(san)(san)(san)焊(han)(han)(han)(han)(han)的(de)加(jia)(jia)熱溫(wen)(wen)度(du)(du)(du)都定(ding)為(wei)(wei)-(K)，其中(zhong)(zhong)Tm為(wei)(wei)母材熔點。2、壓(ya)(ya)力(li)(li)：主(zhu)要影響擴(kuo)散(san)(san)(san)焊(han)(han)(han)(han)(han)的(de)一、二階(jie)段。較(jiao)(jiao)高(gao)(gao)(gao)(gao)壓(ya)(ya)力(li)(li)能(neng)獲得較(jiao)(jiao)高(gao)(gao)(gao)(gao)質量(liang)(liang)的(de)接(jie)(jie)頭，接(jie)(jie)頭強(qiang)(qiang)度(du)(du)(du)與壓(ya)(ya)力(li)(li)的(de)關系見圖(tu)2-46。焊(han)(han)(han)(han)(han)件(jian)(jian)晶粒度(du)(du)(du)較(jiao)(jiao)大(da)(da)(da)或表(biao)面粗(cu)糙度(du)(du)(du)較(jiao)(jiao)大(da)(da)(da)時(shi)(shi)，所(suo)(suo)需(xu)壓(ya)(ya)力(li)(li)也(ye)較(jiao)(jiao)高(gao)(gao)(gao)(gao)。壓(ya)(ya)力(li)(li)上(shang)限(xian)受焊(han)(han)(han)(han)(han)件(jian)(jian)總體變(bian)形量(liang)(liang)及(ji)設備能(neng)力(li)(li)的(de)限(xian)制.除熱等(deng)(deng)靜壓(ya)(ya)擴(kuo)散(san)(san)(san)焊(han)(han)(han)(han)(han)外，通常取(qu)-50MPa。從限(xian)制焊(han)(han)(han)(han)(han)件(jian)(jian)變(bian)形量(liang)(liang)考慮，壓(ya)(ya)力(li)(li)可(ke)在表(biao)2-24范(fan)圍內選(xuan)取(qu)。鑒了壓(ya)(ya)力(li)(li)對(dui)擴(kuo)散(san)(san)(san)焊(han)(han)(han)(han)(han)的(de)第蘭階(jie)段影響較(jiao)(jiao)小，故固(gu)(gu)相(xiang)擴(kuo)散(san)(san)(san)焊(han)(han)(han)(han)(han)后期允許減低壓(ya)(ya)力(li)(li)，以減少變(bian)形。3、保(bao)溫(wen)(wen)擴(kuo)散(san)(san)(san)時(shi)(shi)間(jian)(jian)：保(bao)溫(wen)(wen)擴(kuo)散(san)(san)(san)時(shi)(shi)間(jian)(jian)并(bing)非(fei)變(bian)量(liang)(liang)，而與溫(wen)(wen)度(du)(du)(du)、壓(ya)(ya)力(li)(li)密切相(xiang)關，且可(ke)在相(xiang)當寬(kuan)的(de)范(fan)圍內變(bian)化。采用較(jiao)(jiao)高(gao)(gao)(gao)(gao)溫(wen)(wen)度(du)(du)(du)和壓(ya)(ya)力(li)(li)時(shi)(shi)，只(zhi)需(xu)數分鐘；反之，就要數小時(shi)(shi)。加(jia)(jia)有中(zhong)(zhong)間(jian)(jian)層的(de)擴(kuo)散(san)(san)(san)焊(han)(han)(han)(han)(han)。無(wu)錫微通道換熱器

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