今天山（shān）東無縫鋼管廠（chǎng）來和大家介紹一下無縫鋼管的生產（chǎn）方法：

  Today, as an introduction to shandong seamless tube mill and seamless steel tube production methods:

  a、擠（jǐ）壓法（fǎ）即將加熱好的管坯放在密閉的擠壓圓筒內，穿孔棒與擠壓杆一起（qǐ）運動（dòng），使擠壓件從較小的模孔中擠出。此法可生產直徑較小的無縫鋼管。

  A, extrusion method is a good heating tube billet are put in airtight extrusion cylinder, perforated rods and extrusion, extrusion from smaller extrusion die.This method can produce small diameter seamless steel tube.

  b、若（ruò）欲獲得尺寸更小和質量更好的無縫鋼管，必須采用冷軋、冷拔或者兩者聯合的方法。冷軋通常在（zài）二輥式軋機上進行，鋼管在變斷麵圓（yuán）孔槽和不動的錐形頂（dǐng）頭所組成的環（huán）形孔型中軋製。冷拔通常在0.5～100T的單鏈式或雙鏈式冷拔機上進行。

  B, if you would get a smaller size and better quality seamless steel tubes, must adopt the method of cold rolling, cold drawing or both combined.Cold rolling is usually conducted on two-high rolling mill, steel pipe in variable cross section round hole groove and motionless conical head of rolling in the annular groove.Cold drawing usually in 0.5 ~ 100 t single or double chain chain cold drawing machine.

  c、熱軋（zhá）無（wú）縫鋼管一般在（zài）自動軋管機組（zǔ）上生產（chǎn）。實心管（guǎn）坯經（jīng）檢查並清除表麵缺陷，截成所需長度，在管坯穿孔端端（duān）麵上定心，然後（hòu）送往加（jiā）熱（rè）爐加熱（rè），在穿孔機上穿（chuān）孔。在穿孔同時不斷旋（xuán）轉和前進，在（zài）軋輥和頂頭（tóu）的作（zuò）用下，管坯內部逐漸形成空腔，稱毛管。再送至自動軋管（guǎn）機上繼續（xù）軋製。最後經（jīng）均整機（jī）均整壁厚，經定徑機定徑，達到規格要求（qiú）。利用連（lián）續式軋管機組生產熱軋無縫鋼管是較先進的方法。

  C, hot-rolled seamless steel tubes in automatic pipe mill production unit.Solid billet through inspection and clear the surface defects, cut into the required length, centering on the tube billet perforation end face, and then sent to a heating furnace, punched on the punch.In perforated revolve and progress at the same time, under the action of roll and head, tube billet internal cavity formed gradually, according to the capillary.Then sent to automatically continue rolling mill.Finally approved by reeling mill all the whole wall thickness, the sizing sizing machine, to meet the specification requirements.Hot rolled seamless steel tube production by continuous rolling pipe unit is a more advanced method.