火攻矯正工藝-中英文

1、工藝規(guī)程[S02THM2012001A0]第1頁(yè)共25頁(yè)火工矯正程序ProcedurefDisttionCrectionbyFlame客戶(hù)項(xiàng)目號(hào)ClientNo.所有項(xiàng)目AllProjects編制Edit審查Audit批準(zhǔn)Authization公司訂單derNo.通用火工矯正程序GeneralProcedurefDisttionCrectionbyFlame文件編號(hào)DocumentNo.S02THM2012001A0版本VersionA

2、0頁(yè)碼Pages12520121127使用部門(mén)Department生產(chǎn)部辦公室加工科組立一科組立二科組立三科品質(zhì)保證部FabricationOfficeProcessingSection1stAssemblySection2ndAssemblySection3rdAssemblySectionQADept版本號(hào)Version修訂內(nèi)容Modifications修訂Edit審核Audit批準(zhǔn)Authization日期Date工藝規(guī)程[S02

3、THM2012001A0]第3頁(yè)共25頁(yè)焊后沿構(gòu)件的長(zhǎng)度出現(xiàn)螺旋形變形，這種變形是由于裝配不良，施焊順序不合理，致使焊縫縱向和橫向收縮沒(méi)有一定規(guī)律而引起的變形。SpiralDisttionfromthelengthofweldedpartsmainlyoccursbecauseofbadfittinginappropriateweldingprocedureswhichcausemessinlongitudinalhizontalcon

4、tractioninweldseams.4火焰加熱對(duì)材料性能的影響InfluenceofHeatingtoMaterialw（C）小于0.25%的低碳鋼，在通?；鹧婕訜?、冷卻（包括水冷）時(shí)，不易獲得馬氏體組織，仍保持鋼材原來(lái)組織，即鐵素體加珠光體，因此這種鋼火焰矯正加熱、冷卻對(duì)力學(xué)性能影響不大。ThelowcarbonsteelthatW(c)under0.25%willnoteasilygetmartensitestructureke

5、epsitsiginalstructureduringnmalheatingcooling(includingwatercooling)thusthiskindofflamecrectioncoolinghasverylimitedimpacttoitsmechanicalproperties.低合金鋼采用火焰局部加熱空冷對(duì)力學(xué)性能無(wú)顯著影響、且疲勞試驗(yàn)對(duì)剛度也沒(méi)有影響。但如冷卻速度過(guò)快也能出現(xiàn)低碳馬氏體組織，影響力學(xué)性能。所以火焰矯正

6、應(yīng)控制加熱溫度和冷卻速度。如若采用澆水冷卻，最好加熱溫度不超過(guò)7230C。Partialflameheatingaircoolinghasnoseriousimpacttomechanicalpropertiestolowcarbonalloysteel.Meanwhilethefatiguetestalsohasnoimpacttostiffness.Quickcoolingcancauselowcarbonmartensitestr

7、uctureimpactitsmechanicalpropertiessotheheatingcoolingspeedneedstobecontrolled.Theheatingtemperatureshouldnotexceed7230Cwhenusingwatercooling.5火焰矯正基本參數(shù)選擇BasicReferencefDisttionCrection5.1火焰加熱溫度HeatingTemperature火焰矯正根據(jù)材質(zhì)、

8、板厚和加熱方法等不同情況，選擇不同的加熱溫度?？煞譃榈蜏丶訜?、中溫加熱和高溫加熱三種溫度。Heatingtemperaturediffersaccdingtodifferentmaterialsplate’sthicknessheatingmethodsusuallydividedintolowtemperatureheatingdletemperatureheatinghightemperatureheating.5.1.1低溫加熱L

9、owTemperatureHeating低溫加熱溫度為500~6000C。低溫加熱應(yīng)用于板厚小于6mm的薄板，由于低溫加熱最高溫度在相變之下，適宜含碳量（質(zhì)量分?jǐn)?shù)）大于0.25%的碳素鋼和合金高強(qiáng)度鋼火焰矯正。低溫加熱允許澆水（清水）冷卻，如600MPa級(jí)合金高強(qiáng)度鋼可在4500C澆水冷卻。Temperaturerangesfrom500~6000C.Thisappliestothicknesslessthan6mm.Astheheat

10、ingtemperatureisblowthephasechangingthisheatingismainlyusedfthedisttioncrectionofcarbonsteelhighstrengthalloysteelwhosew(c)islowerthan0.25%.Thisheatingcanusewater(freshwater)coolinge.g.coolthe600MPahighstrengthalloysteel

11、at4500C.5.1.2中溫加熱dleTemperatureHeating溫度為600~7000C。在這個(gè)溫度范圍，火焰矯正最佳。同時(shí)也允許較大的冷卻速度，如澆水冷卻。中溫加熱適宜板厚6~12mm的鋼板件火焰矯正。但對(duì)含碳量（質(zhì)量分?jǐn)?shù)）大于0.35%的碳素鋼和低合金高強(qiáng)度鋼加熱溫度要控制準(zhǔn)確，不得超過(guò)7230C。Heatingtemperaturerangesfrom600~7000Cthisrangeisthebesttempera

12、turefflamecrectionalsoallowinghighspeedcoolinglikewatercooling.Thethicknessofplatesis6~12mm.Fthecarbonsteellowalloyhighstrengthsteelwhosew(c)isgreaterthan0.35%theheatingtemperatureneedstobecontrollednottoexceed7230C.5.1.