1.1 Chromium molybdenum n-gun hpe ninghkap lu ai n-gang a weldability
Chromium hte molybdenum ni gaw madung alloy elements ni rai nga ai, pearlite heat-resistant steel gaw n-gun ja ai n-gun hte n-gun ja ai nbung katsi ai lam hpe grai kaja hkra galaw ya ai, raitim, shanhte gaw magri welding galaw ai lam hpe grai kaja hkra galaw ya ai, welding n-gun hte katsi ai hkra machyi ai shara ni hpe galaw ya ai, dai hta n-gun ja ai n-gun rawng ai, weld galaw ngut ai hpang nbung katsi ai lam hta htum mat ai gaw, n-gun ja ai hte n-gun ja ai martensite hkrang hpe shapraw na matu loi ai sha n-ga, n-gun ja ai hte n-gun ja ai n-gun hpe hkra machyi shangun ai sha n-ga, n-gun ja ai n-gun hpe mung hkra machyi shangun ai. of stress, Dai zawn katsi ai n-gun hpe hkam la ai.
Dai majaw, n-gun n-gun n-rawng ai steel welding a madung manghkang gaw n-gun n-gun n-gun n-gun n-gun n-nga ai lam rai nna, n-gun n-gun ni byin pru wa ai lam gaw, n-gun n-gun (structure), myit ru myit tsang lam hte hydrogen n-gun hpe weld hta n-gun rawng ai lam masum rai nga ai, dai majaw, hkam la mai ai welding galaw ai lam hpe gyin shalat na matu grau ahkyak ai.
2.1 groove
Groove galaw ai lam hpe wan hkru ai (sh) plasma htu ai lam hku nna galaw chye ai. Ra ai shaloi, cutting hpe mung katsi shangun ra ai, groove ntsa na n-gun ni hpe shaw kau na matu polishing galaw ngut ai hpang PT hpe jep yu ra ai. Kalang lang v-type groove hpe lata la u, groove Angle gaw 60℃, crack hpe pat shingdang na matu yu ai shara kaw nna, groove Angle gaw grau kaja ai, raitim, welding n-gun hpe jat ya ai, hte groove hte groove hte ga ntsa lahkawng maga de san seng ai, sau, hka n-gun hte hka hte kaga nhprang arai ni hpe shaw kau u (hydrogen, porosity hpe makawp maga na matu).
2.2 hpe set galaw da ai.
Hpyi shawn ai lam gaw, shi a chromium molybdenum alloy alloy steel n-gun kaba ai majaw, hpung kata na myit ru myit tsang lam hpe n mai shapraw ai, dai majaw, n-gun n-gun n-gun n-gun n-gun n-rawng ai majaw, welding seam grai n kaba ai shaloi, WeChat mung shawa nambat: welding galaw ai, grau nna, grai n-gun ja ai plate welding hta, brace, jig hte fixture ni hpe n-gun n rawng ai sha, n-gun ja ai hku n-gun n rawng hkra makawp maga ra ai.
2.3 Welding ladat hpe lata ai.
Ya aten hta, sau hte sau bang ai shara ni hta pipeline welding galaw na matu lang ai welding ladat ni gaw, npu kaw na hte electrode arc welding galaw na matu GTAW rai nga ai. Kaga welding ladat ni hta MIG welding, CO2 gas welding, electroslag welding hte hka kata de shang ai arc welding, etc.
2.4 Welding arung arai ni hpe lata ai
Welding arung arai ni hpe lata ai, weld metal a alloy composition hte n-gun atsam hpe lata la ai npawt tara gaw, npawt nhpang n-gun a shadawn shadang hte maren sha rai ra ai (sh) dai arung arai a hpaji masa ni a majaw tang madun da ai npu na bungli galaw ai lam index de du ra ai. Bai nna, hydrogen n-gun hpe shayawm na matu, alkaline n-gun n law ai electrode, electrode (sh) flux hte rau rai ra ai, dai hte rau, hka lim ai hpaji masa hte maren rai ra ai, dai hte rau, WeChat mung shawa jahpan: Micro welder, shanhte hpe wan n-gun hpe n-gun shayawm ai barrel ni hta wan n-gun jat wa ai hte electrode jat wa ai hte maren, wan n-gun hpe n-gun shayawm ai barrel ni hta hkying hkum 4 hta n-pu de n-gun jat wa ai, n rai yang, katsi ai aten hpe bai galaw hpang ra ai, katsi ai aten hpe bai galaw ra ai, katsi ai aten ni hpe bai galaw ra ai. Concrete gawgap ai lam hta, hkrak tup tsun da ai lam ni nga ai. Austentic stainless steel electrode, A307 zawn re ai ni hpe mung, chromium-molybdenum n-gun n rawng ai n-gang hpe lata hte arc welding galaw na matu lang mai ai, raitim, n-gun n rawng shi yang, dai hpe naw katsi ra ai. Ndai ladat gaw welding daw ni hpe welding galaw ngut ai hpang n mai tsi lajang ai masa hte htap htuk ai.
2.5 shawng katsi ai
Preheating gaw, n-gun n rawng ai n-gang hta katsi ai hte myit ru myit tsang lam ni hpe yeng seng kau na matu ahkyak ai hpaji masa langai rai nga ai. welding quality hpe hkam la lu na matu, nbung laru langai ngai hpe tau hkrau hkyen lajang nna, n-gun n-gun hpe gram lajang na matu, shara hpe gram lajang ai lam hte welding galaw ai lam lahkawng yan hta galaw ra ai.
2.6 weld galaw ngut ai hpang hka lim ai
1990 ning hta, n-gun ja ai n-gun hpe n-gun n rawng ai n-gun hpe n-gun n rawng ai n-gun hpe n-gun ja hkra galaw ra ai, n-gun ja ai hka lum ai aten hta pyi, ndai hpe galaw ra ai, n-gun rawng ai hpun palawng ni hte shinggrup da ai hpang kalang ta, n-gun n rawng ai hpun palawng ni hpe n-gun n rawng ai hpun palawng n-gun n rawng ai shara hta tawn da mai ai.
2.7 Hkap la ngut ai hpang na katsi ai hpe tsi lajang ai
Hka lum ai hpang kalang ta galaw ra ai, n-gun n rawng ai hpe koi gam na matu, myit ru myit tsang lam ni hpe yeng seng kau nna, microstructure hpe grau kaja hkra galaw ra ai.
