冷拔無縫鋼管的生產方法有哪些呢

冷拔無縫鋼管的生產方法有很多種，下面小編來介紹幾個。熱軋冷拔無縫鋼管一般在自動軋管機組上生產。實心管坯經檢查並清除表面缺陷，截成所需長度，在管坯穿孔端端面上定心，然後送往加熱爐加熱，在穿孔機上穿孔。在穿孔同時不斷旋轉和前進，在軋輥和頂頭的作用下，管坯內部逐漸形成空腔，稱毛管。再送至自動軋管機上繼續軋制。最後經均整機均整壁厚，經定徑機定徑，達到規格要求。利用連續式軋管機組生產熱軋無縫鋼管是較先進的方法。
There are many ways to produce cold-drawn seamless steel tubes. Here are a few of them. Hot-rolled and cold-drawn seamless steel tubes are generally produced on automatic tube rolling透水地坪 mills. The solid billet is checked and cleared of surface defects, cut into the required length, centered on the end face of the billet perforation, then sent to the heating furnace for heating, and perforated on the perforator. Under the action of the roll and the top, a cavity is gradually formed inside the billet, which is called capillary. It is then sent to the automatic pipe mill to continue rolling. Finally, the wall thickness of the whole machine is equalized, and the sizing machine is used to calibrate the diameter, which meets the requirements of specifications. It is an advanced method to produce hot-rolled seamless steel pipe by continuous pipe rolling mill. 2、若欲獲得尺寸更小和質量更好的冷拔無縫鋼管，必須采用冷軋、冷拔或者兩者聯合的方法。冷軋通常在二輥式軋機上進行，鋼管在變斷面圓孔槽和不動的錐形頂頭所組成的环形孔型中軋制。冷拔通常在0.5～100T的單鏈式或雙鏈式冷拔機上進行。
2. In order to obtain seamless pipes with smaller size and better quality, cold rolling, cold drawing or combination of the two methods must be adopted. Cold rolling is usually carried out on a two-roll mill. Steel tubes are rolled in an annular pass consisting of a circular groove with variable cross-section and a fixed conical head. Cold drawing is usually carried out on single-chain or double-chain cold-drawing ma环氧地坪chines of 0.5-100T.
3、擠壓法即將加熱好的管坯放在密閉的擠壓圓筒內，穿孔棒與擠壓桿一起運動，使擠壓件從較小的模孔中擠出。此法可生產直徑較小的鋼管。
3. The extrusion method is to place the heated tube blank in a closed extrusion cylinder, and the perforating rod moves with the extrusion rod to extrude the extruded part from a smaller die hole. This method can produce steel pipes with smaller diameter.