1, sanannun matsin lamba PN ne carbon karfe na 0.25MP-1.0MPa, Austenitic bakin karfe forgings damar amfani da Class I forgings.
2, ban da ƙa'idodin da ke ƙasa, lambar matsin lamba PN ne 1.6MPa-6.3MPa na forging ya kamata ya cika buƙatun matakin forging na Class II ko Class II sama. 3. Cika daya daga cikin wadannan yanayi, ya kamata ya cika III da forging bukatun:
(1) Chromium molybdenum karfe forging na nominal matsin lamba PN> 4.0MPa;
(2) Ferrite karfe forging na nominal matsin lamba PN> 1.6MPa da kuma aiki zafin jiki ≤ -20 digiri Celsius;
(3) Common matsin lamba PN≥10.0MPa flanges don forging.
2, wuyan-to-walda, wuyan-flat walda, bearing walda da threaded flanges yawanci da forging kayan aiki ko forging aiki. Lokacin da aka yi da karfe farantin ko irin karfe, dole ne a cika wadannan bukatun:
1, karfe farantin ya kamata ta hanyar ultrasonic bincike rauni, babu layered lahani;
2, ya kamata yankan a cikin bar a gefen karfe madaidaiciya shugabanci, da kuma walda madaidaiciya madaidaiciya, da kuma sa karfe farfajiyar samar da madaidaiciya na madaidaiciya. Ba za a iya amfani da karfe farantin kai tsaye inji aiki zuwa band wuyan flanges;
3, da zagaye welding seam ya kamata a yi amfani da cikakken narkewa welding seam;
4, da zagaye welding seam ya kamata a yi welding bayan zafi magani, da kuma yin 100% haske ko ultrasonic bincike rauni, da kuma haske bincike rauni ya dace da JB4730 na matakin II bukatun, ultrasonic bincike rauni ya dace da JB4730 na matakin I bukatun.