將精(jing)(jing)(jing)(jing)(jing)軋(ya)(ya)管(guan)(guan)(guan)(guan)送入精(jing)(jing)(jing)(jing)(jing)軋(ya)(ya)管(guan)(guan)(guan)(guan)機(ji)組，經多道(dao)軋(ya)(ya)輥(gun)滾壓，精(jing)(jing)(jing)(jing)(jing)軋(ya)(ya)管(guan)(guan)(guan)(guan)逐漸卷(juan)起，形(xing)成(cheng)有開口間隙(xi)的圓形(xing)精(jing)(jing)(jing)(jing)(jing)軋(ya)(ya)管(guan)(guan)(guan)(guan)，調整擠壓輥(gun)的壓下量，使(shi)精(jing)(jing)(jing)(jing)(jing)軋(ya)(ya)管(guan)(guan)(guan)(guan)間隙(xi)控(kong)制在1~3mm，并使(shi)焊口兩端齊平。如間隙(xi)過大(da)(da)，則造成(cheng)鄰(lin)近效應減少，渦流熱量不足(zu)，精(jing)(jing)(jing)(jing)(jing)軋(ya)(ya)管(guan)(guan)(guan)(guan)晶間接合(he)不良而產生未熔合(he)或開裂。如間隙(xi)過小則造成(cheng)鄰(lin)近效應增(zeng)大(da)(da)，精(jing)(jing)(jing)(jing)(jing)軋(ya)(ya)管(guan)(guan)(guan)(guan)熱量過大(da)(da)，造成(cheng)精(jing)(jing)(jing)(jing)(jing)軋(ya)(ya)管(guan)(guan)(guan)(guan)燒(shao)損;或者(zhe)精(jing)(jing)(jing)(jing)(jing)軋(ya)(ya)管(guan)(guan)(guan)(guan)經擠壓、滾壓后形(xing)成(cheng)深(shen)坑，影響(xiang)精(jing)(jing)(jing)(jing)(jing)軋(ya)(ya)管(guan)(guan)(guan)(guan)表面質量。
精(jing)(jing)(jing)軋(ya)(ya)(ya)管(guan)(guan)(guan)溫(wen)度(du)主要受高頻(pin)渦流(liu)(liu)熱功率的(de)(de)影(ying)(ying)響，根(gen)據公式(shi)可知(zhi)，高頻(pin)渦流(liu)(liu)熱功率主要受電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)頻(pin)率的(de)(de)影(ying)(ying)響，渦流(liu)(liu)熱功率與(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)激(ji)勵頻(pin)率的(de)(de)平方(fang)(fang)成(cheng)正(zheng)(zheng)比(bi);而(er)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)激(ji)勵頻(pin)率又受激(ji)勵電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)和電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)感的(de)(de)影(ying)(ying)響。激(ji)勵頻(pin)率公式(shi)為：f=1/[2π式(shi)中：f-激(ji)勵頻(pin)率;C-激(ji)勵回路(lu)中的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)=電(dian)(dian)(dian)(dian)(dian)(dian)(dian)量(liang)/電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya);L-激(ji)勵回路(lu)中的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)感，電(dian)(dian)(dian)(dian)(dian)(dian)(dian)感=磁通量(liang)/電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)上式(shi)可知(zhi)，激(ji)勵頻(pin)率與(yu)激(ji)勵回路(lu)中的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)感平方(fang)(fang)根(gen)成(cheng)反比(bi)、或者(zhe)與(yu)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)的(de)(de)平方(fang)(fang)根(gen)成(cheng)正(zheng)(zheng)比(bi)，只要改變回路(lu)中的(de)(de)電(dian)(dian)(dian)(dian)(dian)(dian)(dian)容(rong)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)感或電(dian)(dian)(dian)(dian)(dian)(dian)(dian)壓(ya)、電(dian)(dian)(dian)(dian)(dian)(dian)(dian)流(liu)(liu)即可改變激(ji)勵頻(pin)率的(de)(de)大小，從而(er)達(da)到(dao)控制(zhi)精(jing)(jing)(jing)軋(ya)(ya)(ya)管(guan)(guan)(guan)溫(wen)度(du)的(de)(de)目(mu)的(de)(de)。對(dui)于低碳鋼，精(jing)(jing)(jing)軋(ya)(ya)(ya)管(guan)(guan)(guan)溫(wen)度(du)控制(zhi)在1250~1460℃，可滿足管(guan)(guan)(guan)壁(bi)厚3~5mm焊透要求(qiu)。另外，精(jing)(jing)(jing)軋(ya)(ya)(ya)管(guan)(guan)(guan)溫(wen)度(du)亦(yi)可通過調節精(jing)(jing)(jing)軋(ya)(ya)(ya)管(guan)(guan)(guan)速度(du)來實現。
機械生產中轎車、機械配件、精密儀器等用對鋼管的精度、光潔度有很高請求的機械。如今的45#精軋管用戶不僅對精度請求高、一起對光潔度請求也很高，因精細亮光無縫鋼管精度高，公差能保持在2--8絲，所以很多機械加工用戶為了節約工、料、時的損耗，用料將由無縫鋼管或許圓鋼正漸漸的轉變為精細亮光無縫鋼管.
精密小口徑光亮管冷卻注意事項：小口徑精軋管的過冷奧氏體非常穩定,具有很髙的淬透性,即使空冷也能得到馬氏體組織,但空冷則會造成刀具外表的氧化,并有可能析出共析碳化物,因此盡可能的不采用空冷。 對于較大和復雜的不銹鋼管,為減少變形和開裂,淬火時可進行預冷處理,但應控制時間,一般根據不銹鋼管的形狀等控制在幾秒到幾十秒,前提是不能析出二次碳化物而降低刀具的硬度和紅硬性等,冷拔無縫鋼管另外不允許發生腐蝕麻點等。 分級淬火溫度應不超過650°C,以防止大棚鋼管發生珠光體的小口徑吹氧管廠轉變和析出碳化物。小口徑精密光亮管廠 考慮到下貝氏體的轉變溫度為320~250°C,其轉變快的溫度在260~30CTC,因此生產中采260~280°C等溫2~4h由于等溫淬火后的剩余精軋管奧氏體溫度較多而且穩定,故應進行四次回火。
無縫鋼管主要特點是無焊接縫，可承受較大的壓力。產品可以是很粗糙的鑄態或冷撥件，一般表面多為黑色，黑色為鋼管進行普通退火時產生的氧化皮。精軋管是近幾年出現的無縫鋼管的衍生產品，主要是內孔、外壁尺寸有嚴格的公差及粗糙度要求。冷拔(軋)精軋管的特點：外徑更小, 少外徑可以做到4mm 左右。精度高可做小批量生產，小公差可以達到 0.03mm 左右。冷拔（軋）成品精度高，表面質 量好，有很好的表面光潔度，有的可以達到鏡面要求。鋼管橫面積更復雜，可以做出各種特殊形狀，如六角形，梯形，U型......鋼管性能更優越，金屬比較至密, 鋼管強度升高，能承受更大的壓強及機械力。高精度冷拔精軋管是一種新型高技術節能產品。近年來，采用本項技術生產的精軋管已廣泛地應用于國內液壓、氣動缸，煤炭井下支架(支柱)，石油泵管，千斤頂等制造領域。高精度冷拔精軋管的推廣應用對節約鋼材，提高加工工效，節約能源，減少液壓缸、氣缸加工設備投資有重要意義。
產品各類型號的【20CrMo無縫鋼管】規格齊全，可(ke)根據用戶需求開發、設計；
工藝標準化【20CrMo無縫(feng)鋼管(guan)】生產流程，高度機械化、自動化作業，精良制作制造高品質【20CrMo無縫鋼管】產品。
材料【20CrMo無縫(feng)鋼管(guan)】原材料產(chan)(chan)品均選用國內(nei)優質產(chan)(chan)品，保證所配套的設備售后無憂。
管理實行ISO9001質(zhi)量管(guan)理體系，標準化生產管(guan)理促企業發展。
技術實行嚴格的四道關質量檢驗，實行【20CrMo無縫鋼管】行業生產標準：
