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       鍛(duan)(duan)制(zhi)(zhi)三(san)(san)通工(gong)(gong)藝，鍛(duan)(duan)造三(san)(san)通成(cheng)型工(gong)(gong)藝，鍛(duan)(duan)三(san)(san)通工(gong)(gong)藝模(mo)鍛(duan)(duan) ：對鍛(duan)(duan)制(zhi)(zhi)三(san)(san)通管件(jian)，其外形(xing)相對復雜，應(ying)(ying)采用模(mo)鍛(duan)(duan)成(cheng)形(xing)工(gong)(gong)藝制(zhi)(zhi)造。 模(mo)鍛(duan)(duan)所使(shi)用的(de)(de)(de)(de)坯(pi)(pi)料(liao)應(ying)(ying)為經過軋制(zhi)(zhi)的(de)(de)(de)(de)型材(cai)，如(ru)棒材(cai)、厚壁的(de)(de)(de)(de)管材(cai)或(huo)板(ban)材(cai)。當使(shi)用鋼(gang)錠(ding)作為原料(liao)時，應(ying)(ying)預先將(jiang)鋼(gang)錠(ding)軋成(cheng)棒材(cai)或(huo)經鍛(duan)(duan)打后(hou)再(zai)作為模(mo)鍛(duan)(duan)的(de)(de)(de)(de)坯(pi)(pi)料(liao)使(shi)用，以(yi)消除鋼(gang)錠(ding)中的(de)(de)(de)(de)偏析、疏(shu)松等缺(que)陷。 坯(pi)(pi)料(liao)經加熱后(hou)放入模(mo)具中鍛(duan)(duan)壓（視情(qing)況不同，可能要經過初鍛(duan)(duan)后(hou)再(zai)進行模(mo)鍛(duan)(duan)），壓力(li)使(shi)金屬(shu)流(liu)動而(er)(er)充滿(man)模(mo)腔；模(mo)鍛(duan)(duan)后(hou)的(de)(de)(de)(de)毛(mao)坯(pi)(pi)如(ru)有飛(fei)邊的(de)(de)(de)(de)話，還要經過沖去(qu)飛(fei)邊余料(liao)的(de)(de)(de)(de)步驟，從(cong)而(er)(er)完成(cheng)全(quan)部模(mo)鍛(duan)(duan)工(gong)(gong)作。 

      高(gao)壓鍛(duan)制三(san)通(tong)(tong)工(gong)(gong)藝，鍛(duan)造三(san)通(tong)(tong)成型工(gong)(gong)藝，鍛(duan)三(san)通(tong)(tong)工(gong)(gong)藝自由(you)鍛(duan)：對特殊形(xing)狀(zhuang)的管(guan)件(jian)或(huo)不(bu)宜采用模鍛(duan)成形(xing)的管(guan)件(jian)可(ke)用自由(you)鍛(duan)工(gong)(gong)藝制造。自由(you)鍛(duan)應鍛(duan)出(chu)(chu)管(guan)件(jian)的大(da)致(zhi)外形(xing)；鍛(duan)三(san)通(tong)(tong)，應鍛(duan)出(chu)(chu)支管(guan)部(bu)位。鍛(duan)三(san)通(tong)(tong)鍛(duan)件(jian)切削加工(gong)(gong)對某(mou)些外形(xing)為筒狀(zhuang)的管(guan)件(jian)可(ke)由(you)棒材(cai)或(huo)厚壁(bi)管(guan)直接切削加工(gong)(gong)成形(xing)，如雙承口(kou)管(guan)箍、活(huo)接頭等(deng)。加工(gong)(gong)時金屬材(cai)料的纖(xian)維流向應與管(guan)件(jian)軸向大(da)致(zhi)平行。對于三(san)通(tong)(tong)、四通(tong)(tong)、彎頭類和管(guan)件(jian)不(bu)得使(shi)用棒材(cai)直接切削加工(gong)(gong)成形(xing)。鍛(duan)三(san)通(tong)(tong)工(gong)(gong)藝模鍛(duan)，鍛(duan)三(san)通(tong)(tong)工(gong)(gong)藝自由(you)鍛(duan)，鍛(duan)三(san)通(tong)(tong),F91鍛(duan)制三(san)通(tong)(tong) 

      鍛制斜三通，鍛制Y型三通，Y型鍛制三通，Y型鍛三通，Y型鍛造三通，P91鍛制三通，P92鍛造三通，P22鍛三通，16Mn鍛三通、15CrMoG鍛三通、12Cr1MoVG鍛制三通，F92鍛三通,F91鍛三通,F22鍛(duan)(duan)(duan)三通,F11鍛(duan)(duan)(duan)三通,鍛(duan)(duan)(duan)造(zao)(zao)三通其外形相對復(fu)雜(za)，應采(cai)用(yong)模鍛(duan)(duan)(duan)成(cheng)(cheng)形工(gong)(gong)藝制造(zao)(zao)。模鍛(duan)(duan)(duan)所(suo)使用(yong)的坯(pi)(pi)(pi)料(liao)(liao)應為經(jing)(jing)(jing)(jing)過軋制的型材(cai)，如棒(bang)材(cai)、厚(hou)壁的管材(cai)或板材(cai)。當使用(yong)鋼錠(ding)作(zuo)為原料(liao)(liao)時，應預先將鋼錠(ding)軋成(cheng)(cheng)棒(bang)材(cai)或經(jing)(jing)(jing)(jing)鍛(duan)(duan)(duan)打(da)后再作(zuo)為模鍛(duan)(duan)(duan)的坯(pi)(pi)(pi)料(liao)(liao)使用(yong)，以(yi)消除(chu)鋼錠(ding)中的偏析、疏松等缺陷。坯(pi)(pi)(pi)料(liao)(liao)經(jing)(jing)(jing)(jing)加熱后放入模具中鍛(duan)(duan)(duan)壓（視情況不同，可能要經(jing)(jing)(jing)(jing)過初鍛(duan)(duan)(duan)后再進行模鍛(duan)(duan)(duan)），壓力使金屬流(liu)動而(er)充(chong)滿模腔(qiang)；模鍛(duan)(duan)(duan)后的毛(mao)坯(pi)(pi)(pi)如有飛邊(bian)(bian)的話，還要經(jing)(jing)(jing)(jing)過沖(chong)去飛邊(bian)(bian)余料(liao)(liao)的步驟(zou)，從而(er)完成(cheng)(cheng)全部模鍛(duan)(duan)(duan)工(gong)(gong)作(zuo)。