精密無縫鋼管壁厚均可定做
精密無縫鋼管的特點:1.冷軋精密鋼管公差尺寸精度高,產品精度控制在±5mm,內外壁光潔度好,表面無氧化層。2.冷軋精密鋼管的(de)綜合性能優良,能承(cheng)受(shou)高(gao)壓,冷彎、擴口、壓扁(bian)不開裂,不皺皮,能做(zuo)各(ge)種復(fu)雜(za)變形及機(ji)械加(jia)(jia)工(gong)(gong)處(chu)理。3.精密無縫管的(de)推廣應用可(ke)以節(jie)約(yue)鋼材(cai),提高(gao)加(jia)(jia)工(gong)(gong),減少加(jia)(jia)工(gong)(gong)工(gong)(gong)序和設備投資(zi),可(ke)以節(jie)約(yue)費用和大大節(jie)約(yue)機(ji)械加(jia)(jia)工(gong)(gong)工(gong)(gong)時,提高(gao)生產量和材(cai)料(liao)利用率,同時有利于(yu)提高(gao)產品質量,降低成本(ben)。
45號精密無縫鋼管不要采(cai)用滲(shen)(shen)碳淬(cui)(cui)火的熱(re)處(chu)理(li)(li)工(gong)藝。調(diao)質處(chu)理(li)(li)后零件具有良(liang)好的綜合(he)機械(xie)性能,廣泛應用于各種重(zhong)要的結構零件,特(te)別是那些在交變負荷下工(gong)作的連桿、螺栓、齒輪及軸類等(deng)。但表(biao)(biao)面(mian)(mian)(mian)(mian)硬度較低,不耐(nai)磨(mo)(mo)。可用調(diao)質+表(biao)(biao)面(mian)(mian)(mian)(mian)淬(cui)(cui)火提高零件表(biao)(biao)面(mian)(mian)(mian)(mian)硬度。滲(shen)(shen)碳處(chu)理(li)(li)一般用于表(biao)(biao)面(mian)(mian)(mian)(mian)耐(nai)磨(mo)(mo)、芯(xin)(xin)部(bu)耐(nai)沖(chong)擊的重(zhong)載零件,其耐(nai)磨(mo)(mo)性比調(diao)質+表(biao)(biao)面(mian)(mian)(mian)(mian)淬(cui)(cui)火高。其表(biao)(biao)面(mian)(mian)(mian)(mian)含(han)碳量0.8--1.2%,芯(xin)(xin)部(bu)一般在0.1--0.25%(特(te)殊情況下采(cai)用0.35%)。經熱(re)處(chu)理(li)(li)后,表(biao)(biao)面(mian)(mian)(mian)(mian)可以獲(huo)得(de)很高的硬度(HRC58--62),芯(xin)(xin)部(bu)硬度低,耐(nai)沖(chong)擊。
精密無縫鋼管熔(rong)點高(gao),抗腐蝕(shi):新型耐(nai)(nai)高(gao)溫(wen)不銹鋼管(guan)(guan)的熔(rong)點為(wei)2050℃,能較(jiao)好地(di)抵抗一些熔(rong)融金屬的侵(qin)蝕(shi),可(ke)用作耐(nai)(nai)火材料、爐(lu)管(guan)(guan),熱電偶保護套等;化(hua)學穩定性(xing)好: 許多復合的硫(liu)化(hua)物(wu)(wu)、磷化(hua)物(wu)(wu)、砷化(hua)物(wu)(wu)、碘化(hua)物(wu)(wu)、氧化(hua)物(wu)(wu)以及硫(liu)酸(suan)、鹽酸(suan)、硝酸(suan)、氫氟酸(suan)不與(yu)新型耐(nai)(nai)高(gao)溫(wen)不銹鋼管(guan)(guan)作用。