熱搜關鍵詞: 預制直埋鋼套鋼保溫管 鋼套鋼地埋蒸汽保溫管 聚氨酯熱力保溫鋼管
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碳鋼旋(xuan)壓(ya)封頭(tou)板坯(pi)與(yu)芯(xin)模共同(tong)旋(xuan)轉(zhuan),由輥輪進給并施加壓(ya)力,使板坯(pi)緊貼芯(xin)模逐點局部變形(xing)的沖壓(ya)成(cheng)形(xing)工藝(yi)。旋(xuan)壓(ya)可制造各種軸(zhou)對稱旋(xuan)轉(zhuan)體零件,如揚聲(sheng)器、彈體、高(gao)壓(ya)容器封頭(tou)、銅鑼;也可
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碳鋼(gang)旋(xuan)(xuan)壓(ya)(ya)(ya)封頭(tou)板(ban)(ban)(ban)坯與芯(xin)模(mo)共同旋(xuan)(xuan)轉,由輥輪進給并施(shi)加壓(ya)(ya)(ya)力(li)(li),使板(ban)(ban)(ban)坯緊貼芯(xin)模(mo)逐點局部變(bian)形的(de)(de)沖壓(ya)(ya)(ya)成(cheng)形工藝。旋(xuan)(xuan)壓(ya)(ya)(ya)可(ke)(ke)制造各種(zhong)軸對稱旋(xuan)(xuan)轉體(ti)零件,如揚聲器、彈體(ti)、高壓(ya)(ya)(ya)容(rong)器封頭(tou)、銅鑼;也(ye)可(ke)(ke)用(yong)于氣(qi)瓶收(shou)口、筒坯成(cheng)形等。旋(xuan)(xuan)壓(ya)(ya)(ya)的(de)(de)特點是:用(yong)很小的(de)(de)變(bian)形力(li)(li)可(ke)(ke)成(cheng)形很大(da)的(de)(de)工件;使用(yong)設備比(bi)較簡(jian)單(dan),中小尺寸的(de)(de)薄板(ban)(ban)(ban)件可(ke)(ke)用(yong)普通車床旋(xuan)(xuan)壓(ya)(ya)(ya);模(mo)具簡(jian)單(dan),只需要(yao)(yao)一塊(kuai)芯(xin)模(mo),材(cai)質要(yao)(yao)求低。近年來,國產壓(ya)(ya)(ya)力(li)(li)容(rong)器鋼(gang)材(cai)都有(you)(you)很大(da)的(de)(de)發(fa)(fa)展(zhan)。2008年GB713—2008(鍋(guo)爐和(he)壓(ya)(ya)(ya)力(li)(li)容(rong)器用(yong)鋼(gang)板(ban)(ban)(ban)》的(de)(de)發(fa)(fa)布(bu)。是對容(rong)器鋼(gang)板(ban)(ban)(ban)發(fa)(fa)展(zhan)的(de)(de)推動(dong)作(zuo)用(yong)。與舊版(ban)的(de)(de)壓(ya)(ya)(ya)力(li)(li)容(rong)器用(yong)鋼(gang)板(ban)(ban)(ban)相(xiang)比(bi),GB713—2008擴大(da)了鋼(gang)板(ban)(ban)(ban)的(de)(de)厚(hou)度、寬(kuan)度的(de)(de)范(fan)圍;降低了各牌號(hao)的(de)(de)S、P的(de)(de)含量(liang);提高了各牌號(hao)的(de)(de)V型(xing)沖擊(ji)功(gong)指(zhi)標,容(rong)器用(yong)板(ban)(ban)(ban)的(de)(de)質量(liang)與性(xing)能都有(you)(you)一定的(de)(de)提高。2009年發(fa)(fa)布(bu)的(de)(de)TSG R0004—2009(固定式壓(ya)(ya)(ya)力(li)(li)容(rong)器安(an)全技術監(jian)察規(gui)程(cheng)》對壓(ya)(ya)(ya)力(li)(li)容(rong)器用(yong)鋼(gang)的(de)(de)要(yao)(yao)求也(ye)嚴格了。它規(gui)定了碳素鋼(gang)和(he)低合金鋼(gang)(鋼(gang)板(ban)(ban)(ban)、鋼(gang)管(guan)、和(he)鋼(gang)鍛件)沖擊(ji)功(gong)(KV2)小不(bu)低于20J。