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.冷軋精密鋼管的綜(zong)合性能(neng)優良,能(neng)承受高壓,冷(leng)彎、擴口、壓扁不開裂,不皺皮,能(neng)做(zuo)各種復雜變形及機械(xie)加工(gong)(gong)處(chu)理(li)。3.精(jing)密無縫管的推廣應(ying)用可(ke)以節約鋼(gang)材,提高加工(gong)(gong),減少加工(gong)(gong)工(gong)(gong)序和設備(bei)投資,可(ke)以節約費用和大(da)大(da)節約機械(xie)加工(gong)(gong)工(gong)(gong)時,提高生產(chan)(chan)量和材料利用率,同(tong)時有利于提高產(chan)(chan)品質量,降低成(cheng)本。
45號精密無縫鋼管不要采(cai)用(yong)(yong)(yong)(yong)滲碳淬火的(de)(de)(de)熱處(chu)(chu)(chu)理(li)工藝。調(diao)質處(chu)(chu)(chu)理(li)后(hou)零(ling)(ling)(ling)件(jian)具(ju)有良好的(de)(de)(de)綜合機械性能,廣(guang)泛應用(yong)(yong)(yong)(yong)于各(ge)種重要的(de)(de)(de)結構零(ling)(ling)(ling)件(jian),特別是那(nei)些在(zai)交變負(fu)荷下工作的(de)(de)(de)連桿(gan)、螺(luo)栓、齒輪及軸類等。但表(biao)(biao)面(mian)硬(ying)(ying)度較低,不耐(nai)(nai)(nai)磨。可用(yong)(yong)(yong)(yong)調(diao)質+表(biao)(biao)面(mian)淬火提高零(ling)(ling)(ling)件(jian)表(biao)(biao)面(mian)硬(ying)(ying)度。滲碳處(chu)(chu)(chu)理(li)一(yi)般用(yong)(yong)(yong)(yong)于表(biao)(biao)面(mian)耐(nai)(nai)(nai)磨、芯(xin)部(bu)耐(nai)(nai)(nai)沖(chong)擊的(de)(de)(de)重載(zai)零(ling)(ling)(ling)件(jian),其(qi)耐(nai)(nai)(nai)磨性比調(diao)質+表(biao)(biao)面(mian)淬火高。其(qi)表(biao)(biao)面(mian)含碳量0.8--1.2%,芯(xin)部(bu)一(yi)般在(zai)0.1--0.25%(特殊情況下采(cai)用(yong)(yong)(yong)(yong)0.35%)。經(jing)熱處(chu)(chu)(chu)理(li)后(hou),表(biao)(biao)面(mian)可以(yi)獲得很高的(de)(de)(de)硬(ying)(ying)度(HRC58--62),芯(xin)部(bu)硬(ying)(ying)度低,耐(nai)(nai)(nai)沖(chong)擊。
精密無縫鋼管熔(rong)點高(gao)(gao),抗腐蝕:新型(xing)耐(nai)高(gao)(gao)溫不銹(xiu)鋼管的熔(rong)點為2050℃,能(neng)較好(hao)地抵抗一些熔(rong)融金屬的侵蝕,可(ke)用作耐(nai)火材(cai)料(liao)、爐管,熱(re)電偶(ou)保護套等;化(hua)(hua)學(xue)穩定(ding)性好(hao): 許(xu)多復(fu)合的硫(liu)化(hua)(hua)物(wu)(wu)(wu)、磷化(hua)(hua)物(wu)(wu)(wu)、砷化(hua)(hua)物(wu)(wu)(wu)、碘化(hua)(hua)物(wu)(wu)(wu)、氧化(hua)(hua)物(wu)(wu)(wu)以及硫(liu)酸(suan)、鹽酸(suan)、硝酸(suan)、氫氟酸(suan)不與新型(xing)耐(nai)高(gao)(gao)溫不銹(xiu)鋼管作用。