It is difficult to control the wall thickness of straight seam steel pipe. At present, the methods to improve the wall thickness accuracy of black jacket direct buried straight seam steel pipe manufacturers are generally as follows:

　　1. 管子將被加熱

　　1. The pipe will be heated

　　熱量被加熱到平均水平，以防止溫度波動(dòng)。起飛和降落溫度穩(wěn)定時(shí)，升降溫度不得超過(guò)30度。

　　The heat is heated to an average level to prevent temperature fluctuations. When the takeoff and landing temperatures are stable, the maximum lifting temperature shall not exceed 30 ℃.

　　2. 磨機(jī)主軸

　　2. Mill spindle

　　厚壁管和實(shí)心坯料的平均壁厚顯著降低了芯軸彎曲變形的可能性，可以有效提高壁厚的精度。

　　The average wall thickness of thick walled tube and solid billet significantly reduces the possibility of mandrel bending deformation and can effectively improve the accuracy of wall thickness.

　　3.心軸精度

　　3. Spindle accuracy

　　加工精度控制在0.1mm±外芯，芯棒直線度偏差不超過(guò)5mm。在焊接過(guò)程中，在兩個(gè)芯棒之間放置一個(gè)定徑銷(xiāo)，以避免焊接總線性引線的偏差。

　　The machining accuracy shall be controlled within 0.1mm ± outer core, and the straightness deviation of mandrel shall not exceed 5mm. During the welding process, a sizing pin is placed between the two mandrels to avoid the deviation of the welding bus lead.

　　4. 的工藝

　　4. Perfect technology

　　確定校直輥裝置是否到位，調(diào)整相應(yīng)的芯輥在中間，打開(kāi)相同的開(kāi)孔角度和尺寸，在軋制線上通過(guò)軋制芯的中間。

　　Determine whether the straightening roll device is in place, adjust the corresponding core roll in the middle, open the same opening angle and size, and pass through the middle of the rolling core on the rolling line.

　　5. 調(diào)整卷

　　5. Adjustment volume

　　完善的工藝是避免減薄和壁厚超過(guò)狀態(tài)控制極限，提高壁厚精度。

　　The perfect technology is to avoid the center thinning and the wall thickness exceeding the state control limit, and to improve the wall thickness accuracy.

　　6. 穿孔芯棒

　　6. Perforated mandrel

　　沖頭直徑一般選擇Φ108 mm - 114 mmΦ,25毫米或更高的厚度要求,厚壁管壁厚度是常見(jiàn)的。

　　Generally, the punch diameter is Φ 108 mm - 114 mm Φ, and the thickness of 25 mm or higher is required. Thick wall pipe wall thickness is common.

　　7. 滾動(dòng)中間行

　　7. Scroll middle row

　　確保沖床線與帶孔臺(tái)車(chē)線一致，防止“上滾”或“下滾”，使加工過(guò)程中毛坯受到平均力的影響。穿刺過(guò)程。

　　Ensure that the center line of punch is consistent with the center line of the trolley with holes to prevent "up rolling" or "down rolling", so that the rough is affected by the average force during the processing. Puncture process.

　　8. 滾動(dòng)物品

　　8. Rolling items

　　頭、導(dǎo)軌、滾子等滾動(dòng)物體的磨損應(yīng)實(shí)時(shí)變化。

　　The wear of head, guide rail, roller and other rolling objects shall change in real time.

　　9. 壓路機(jī)

　　9. Roller

　　滾動(dòng)距離必須在滾動(dòng)線的中間。在鉆進(jìn)和軋制過(guò)程中，確保導(dǎo)輥與軋輥之間的距離等于上輥與下輥之間的距離。

　　The rolling distance must be in the middle of the rolling line. During drilling and rolling, ensure that the distance between the guide roll and the roll is equal to the distance between the upper roll and the lower roll.

　　以上是黑夾克直埋式直縫鋼管廠家為大家介紹的相關(guān)內(nèi)容，想要了解更多內(nèi)容，歡迎訪問(wèn)網(wǎng)站：http://www.qndr49.cn

　　The above is the relevant content introduced by the manufacturer of black jacket direct buried straight seam steel pipe. For more information, please visit the website: http://www.qndr49.cn