厚壁方管是制造和日常生活主要的一種方管的種類，它在管材中歸屬于較為牢固和結實的一種主要的板材。厚壁方管在使用中也是會碰到彎曲形變的這種情況的，濟南方管的彎曲度如何避免，要從下面的一些方法做好預防：

Thick walled square tube is a kind of square tube mainly used in manufacturing and daily life. It belongs to a kind of main plate which is relatively solid and solid. The thick wall square pipe will also encounter bending deformation in use. How to avoid bending of Jinan square pipe, the following measures should be taken to prevent it:

(1)選用先外噴后內噴的逐層冷拔加工工藝。因為厚壁方管的內灑水是以厚壁方管的一端流入另一端，厚壁方管在兩邊的冷拔速率不一樣，從而造成厚壁方管彎曲。可選用先開展外灑水冷拔，促使厚壁方管表面生變化，再用內灑水開展降溫的辦法，防止厚壁方管彎曲變形，內灑水比外噴頭的延遲時間可延長2～10s。

(1) The layer by layer cold drawing process of external spraying followed by internal spraying is selected. Because the inner watering of the thick wall square tube flows from one end of the thick wall square tube to the other end, the cold drawing rate of the thick wall square tube on both sides is different, resulting in the bending of the thick wall square tube. The external watering and cold drawing can be carried out first to promote the change of the surface of the thick wall square pipe, and then the internal watering can be used to carry out the cooling to prevent the bending and deformation of the thick wall square pipe. The delay time of the internal watering can be extended by 2~10s compared with the external sprinkler.

(2)降低厚壁方管在轉動輪上的懸出端長度。根據有效的轉動，合理的布局及厚壁方管長短操縱，將厚壁方管頂端懸出量操縱在≤600mm，可合理減少熱處理時的向心力，減少厚壁方管彎曲度。

(2) Reduce the length of the overhanging end of the thick wall square tube on the rotating wheel. According to effective rotation, reasonable layout and length control of thick wall square tube, the overhang of the top of thick wall square tube is controlled at ≤ 600mm, which can reasonably reduce the centripetal force during heat treatment and reduce the bending of thick wall square tube.

(3)對操縱轉動輪轉速比進行調整。

(3) Adjust the steering wheel speed ratio.

(4)操縱轉動輪核心。轉動輪核心誤差對厚壁方管的熱處理時彎曲度有比較大影響。經科學研究，轉動輪核心偏差應調節在0～5mm。

(4) Manipulate the turning wheel core. The core error of the rotating wheel has a great influence on the bending of thick walled square tubes during heat treatment. Through scientific research, the core deviation of the rotating wheel should be adjusted within 0~5mm.

(5)操縱內外灑水量及勻稱性。油氣井管熱處理制冷選用外表層制冷加內徑向噴涌方法，外灑水量要均勻，內灑水量及內噴頭的對中度合理也是厚壁方管水淬時影響彎曲度的關鍵要素。

(5) Control the internal and external spraying water volume and uniformity. Oil and gas well pipe heat treatment refrigeration adopts the method of external layer refrigeration and internal diameter spraying. The external spraying water volume should be uniform. The reasonable alignment of internal spraying water volume and internal nozzle is also the key factor affecting the bending degree of thick walled square pipe during water quenching.

碰到厚壁方管的彎曲和形變的情況，如果是可以矯正的話，那么厚壁方管是可以再次使用的，否則的話厚壁方管會很大程度上影響使用。更多相關注意事項就來我們網站http://m.liondatech.com進行咨詢。

In case of bending and deformation of the thick walled square tube, if it can be corrected, the thick walled square tube can be used again, otherwise, the use of the thick walled square tube will be greatly affected. More relevant precautions come to our website http://m.liondatech.com Consult.