热搜关键词: 预制直埋钢套钢保温管 钢套钢地埋蒸汽保温管 聚氨酯直埋保温钢管

封头管帽
碳钢旋(xuan)压(ya)(ya)封(feng)头板(ban)坯(pi)与芯(xin)模(mo)共(gong)同(tong)旋(xuan)转(zhuan),由辊轮进(jin)给(ji)并施加压(ya)(ya)力,使板(ban)坯(pi)紧贴芯(xin)模(mo)逐点(dian)局部(bu)变形(xing)的冲压(ya)(ya)成形(xing)工艺。旋(xuan)压(ya)(ya)可制造各种(zhong)轴(zhou)对(dui)称旋(xuan)转(zhuan)体零件,如扬声器(qi)、弹(dan)体、高(gao)压(ya)(ya)容(rong)器(qi)封(feng)头、铜锣;也可
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碳(tan)钢(gang)(gang)(gang)旋(xuan)(xuan)(xuan)压(ya)(ya)(ya)封头(tou)板(ban)(ban)(ban)(ban)坯(pi)与芯模(mo)共同(tong)旋(xuan)(xuan)(xuan)转,由辊轮(lun)进给并施(shi)加压(ya)(ya)(ya)力(li)(li)(li),使板(ban)(ban)(ban)(ban)坯(pi)紧(jin)贴(tie)芯模(mo)逐点局部变(bian)(bian)形(xing)的(de)(de)(de)(de)冲压(ya)(ya)(ya)成(cheng)形(xing)工艺。旋(xuan)(xuan)(xuan)压(ya)(ya)(ya)可(ke)制造各种轴对(dui)(dui)称(cheng)旋(xuan)(xuan)(xuan)转体(ti)(ti)零(ling)件,如(ru)扬(yang)声器(qi)(qi)、弹体(ti)(ti)、高压(ya)(ya)(ya)容(rong)(rong)(rong)(rong)(rong)器(qi)(qi)封头(tou)、铜锣;也(ye)可(ke)用(yong)(yong)于气(qi)瓶收口、筒(tong)坯(pi)成(cheng)形(xing)等。旋(xuan)(xuan)(xuan)压(ya)(ya)(ya)的(de)(de)(de)(de)特点是(shi):用(yong)(yong)很小(xiao)的(de)(de)(de)(de)变(bian)(bian)形(xing)力(li)(li)(li)可(ke)成(cheng)形(xing)很大(da)的(de)(de)(de)(de)工件;使用(yong)(yong)设备(bei)比(bi)较(jiao)简单,中小(xiao)尺寸的(de)(de)(de)(de)薄板(ban)(ban)(ban)(ban)件可(ke)用(yong)(yong)普通车床旋(xuan)(xuan)(xuan)压(ya)(ya)(ya);模(mo)具(ju)简单,只需要一块(kuai)芯模(mo),材质要求低(di)。近(jin)年(nian)来,国产压(ya)(ya)(ya)力(li)(li)(li)容(rong)(rong)(rong)(rong)(rong)器(qi)(qi)钢(gang)(gang)(gang)材都有很大(da)的(de)(de)(de)(de)发展。2008年(nian)GB713—2008(锅(guo)炉和压(ya)(ya)(ya)力(li)(li)(li)容(rong)(rong)(rong)(rong)(rong)器(qi)(qi)用(yong)(yong)钢(gang)(gang)(gang)板(ban)(ban)(ban)(ban)》的(de)(de)(de)(de)发布(bu)。是(shi)对(dui)(dui)容(rong)(rong)(rong)(rong)(rong)器(qi)(qi)钢(gang)(gang)(gang)板(ban)(ban)(ban)(ban)发展的(de)(de)(de)(de)推动作用(yong)(yong)。与旧版的(de)(de)(de)(de)压(ya)(ya)(ya)力(li)(li)(li)容(rong)(rong)(rong)(rong)(rong)器(qi)(qi)用(yong)(yong)钢(gang)(gang)(gang)板(ban)(ban)(ban)(ban)相比(bi),GB713—2008扩大(da)了(le)(le)钢(gang)(gang)(gang)板(ban)(ban)(ban)(ban)的(de)(de)(de)(de)厚度、宽度的(de)(de)(de)(de)范围(wei);降低(di)了(le)(le)各牌号的(de)(de)(de)(de)S、P的(de)(de)(de)(de)含量;提高了(le)(le)各牌号的(de)(de)(de)(de)V型冲击功指(zhi)标,容(rong)(rong)(rong)(rong)(rong)器(qi)(qi)用(yong)(yong)板(ban)(ban)(ban)(ban)的(de)(de)(de)(de)质量与性能(neng)都有一定的(de)(de)(de)(de)提高。2009年(nian)发布(bu)的(de)(de)(de)(de)TSG R0004—2009(固定式(shi)压(ya)(ya)(ya)力(li)(li)(li)容(rong)(rong)(rong)(rong)(rong)器(qi)(qi)安全技术监察(cha)规程》对(dui)(dui)压(ya)(ya)(ya)力(li)(li)(li)容(rong)(rong)(rong)(rong)(rong)器(qi)(qi)用(yong)(yong)钢(gang)(gang)(gang)的(de)(de)(de)(de)要求也(ye)严格了(le)(le)。它规定了(le)(le)碳(tan)素钢(gang)(gang)(gang)和低(di)合金钢(gang)(gang)(gang)(钢(gang)(gang)(gang)板(ban)(ban)(ban)(ban)、钢(gang)(gang)(gang)管、和钢(gang)(gang)(gang)锻件)冲击功(KV2)小(xiao)不低(di)于20J。