Seleksen bilong ol weldim samting Ol i tok ol i mas mekim wok bilong weldim Austenititik A102 na J507 bilong weldim wankain kain bilong ol liklik hap bilong graun i no save kamap planti taim, na ol i tok orait long en, em Astenitik A102 na J507, ol i tok ol i mas weldim ol samting i no save kamap planti taim. weldim elektrod J507 weldim rod welding, jenerol jusum 3.2 weldim stik bottom, we i stap weldem ilektrod we i stap we i rekomendem blong jusum 4.0 welding rod.Wolding elektrod i mas yunifom bifo welding, A102 welding rod mo J507 wed blong weldim rod blong mekem i drae mo J507 i mas mekem i kam drae, o J507 we i weldem ol samting long hem. olsem weldim welda i mas stap longwe long inkubata, wantaim weldim, weldim stik i no inap drai planti taim.
Preheat bifo weldingRare wol wear-raesting aloi steel i gat wan bigfala fasin blong mekem i kam strong, mo i isi blong prodiusum ol strong tisu mo ol kolkol krek long welding{1}} Olsem mo, i nid blong hatem bifo bifo weldim, mo preheting tempereja i jenerol kontrolem insaed long ranj blong 200 ~ 250 digri adopsen adopsen adopsen blong 200 ~ 250 digri sos adopsen blong 200 ~ 250 digri sos adopsen blong 200 ~ 250 digri sos adopsen blong 200 ~ 250 digri sos adopsen. na ol i yusim maikro kabon paia taim ol i hat. Bihainim tiknes na diamita bilong paip wol, wanpela o sampela welding distens i ken yusim long muv i go i kam long paip bilong hat i go i go long wankain hat{{6}……{6}……{6}Kosit bilong hat i stap insait long mak bilong 3-pela wol tiknes long tupela sait bilong grou, jenerali insait long mak bilong 50 ~ 100m, jenerali insait long mak bilong 50 ~ 100m . 50mm. Tempereja bilong hatim yu ken skelim wantaim wanpela pen bilong metaim tempereja.
The tack weldingThe number of welding spots is generally from 3 to 6. The length of welding spot is 10 ~ 30mm, and the height is 2 ~ 4mm. The welding specification for positioning welding is the same as that for formal welding.4. Number of welding layersThe welding adopts multi-layer and multi-pass weldim.5. tempereja bilong intaleia Long weldim, tempereja bilong intaleia bai ol i kontrolim gut insait long mak bilong 200 ~ 250 digri , na tempereja bilong intaleia bai no inap antap tumas —13} Post weldim hat tritmen Insait long 300 digri bihain long weldim, bihain long kol i go long 250 ~ 300 digri bihain long weldim weld bihain long weldim na stopim 250 digri bihain long weldim na stopim pasin bilong kilim i dai na bruk, bihain long koling i go inap long 250 ~ kraki, bihain long koling i go long 250 ~ kreking, bihain long koling i go long 250 digri bihain long weldim na stopim pasin bilong kilim i dai na brukim, bihain long em i kol long 250 0 asbestos laplap bilong mekim wok bilong em yet i kol ({17}} Ol bikpela poin bilong weldim7.1 wok envairomenOn-sait welding, ren, relatif humiditi i bikpela moa o wankain olsem 90%, weldim i tambu long mekim wok bilong weldim weldim samting bilong weldim, na em i mas daunim stret bilong weldim karent bilong weldim, na em i mas daunim stret bilong weldim karent bilong weldim, generally recommended to control the current of A102 electrode and J507 electrode during welding at 90 ~ 150A, and the current of vertical welding and overhead welding should be correspondingly reduced.7.3 operation pointsWhen applying welding, should be two people butt welding, keep the two solder joints in a symmetrical position, the electrode shall not swing, and the use of short arc welding, narrow welding, multi-layer welding, generally each layer thickness should be equal to the electrode diameter.After welding each seam of each layer, hammer strike with a pneumatic shovel or hammer to reduce the welding stress.When welding, the temperature between layers should be strictly controlled. After welding, in order to reduce the cooling speed and prevent quenching and kreking, asbestos laplap i mas yusim long insulation.
