文章信息/Info

Title:

Effect of Forming Size on Sectional Deformation of Wave Stamping of 3003Al��-H14 Micro Channel Flat Tube

文章編號:

1674-3962(2024)03-0265-08

作者:

程傳峰; 金明; 王項如; 朱英霞; 程一峰; 盤朝奉; 王園

1. 安徽新富新能源科技股份有限公司，安徽 安慶 246001 2. 安徽環新集團股份有限公司，安徽 安慶 246001 3. 江蘇大學機械工程學院，江蘇 鎮江 212013 4. 江蘇大學 汽車工程研究院， 江蘇 鎮江 212013

Author(s):

CHENG Chuanfeng;  JIN Ming;  WANG Xiangru;  ZHU Yingxia;  CHENG Yifeng;  PAN Chaofeng;  WANG Yuan

1. ANHUI XMAX New Energy Technology Co., Ltd., Anqing 246001, China 2. ANHUI ARN GROUP Co., Ltd., Anqing 246001, China 3. School of Mechanical Engineering, Jiangsu University, Zhenjiang 212013,China 4. Automotive Engineering Research Institute, Jiangsu University, Zhenjiang 212013, China

關鍵詞:

微小通道管; 沖壓; 薄壁件; 成形尺寸; 截面變形

Keywords:

micro-channel tube;  stamping;  thin-walled parts;  forming dimensions;  cross�瞫ectional deformation

分類號:

TG386

DOI:

10.7502/j.issn.1674-3962.202111005

文獻標志碼:

A

摘要:

薄壁微小通道波形扁管是建設新能源汽車鋰電池組恒溫系統的絕佳材料，成形尺寸是影響其沖壓成形截面變形的關鍵因素。建立了實驗驗證的3003Al-H14微小通道薄壁扁管的波形沖壓�不貜椨邢拊�模型。基于所建模型，研究了截面高度、管坯壁厚、內外面相對彎曲半徑縮放系數等成形尺寸，對截面變形率和平均截面變形率的作用規律。研究發現：① 橫截面上邊緣孔的截面變形率通常較大，其余孔的截面變形率相對較小且大小一致；縱截面上孔的截面變形率呈現波峰波谷高、中間段低的分布特點。② 扁管的截面變形率隨著截面高度增大而增大，當截面高度超過4 mm時，扁管內的筋顯著彎折，橫截面塌陷嚴重。③ 扁管的平均截面變形率隨著壁厚增大呈指數函數下降；當壁厚等于0.1 mm時，所有截面都畸變嚴重，而當壁厚超過0.3 mm時，最大截面畸變率下降至24.71%。④ 內外面相對彎曲半徑的縮放系數越大，則內外面的實際彎曲程度越小，平均截面變形率也越小。研究成果對薄壁微小通道波形扁管的精確成形具有科學意義和工程價值。

Abstract:

The thin-walled flat tube with microchannels is an essential component for the construction of the constant temperature system in lithium-ion battery packs for new energy vehicles. The dimensions used in forming this component are critical factors that influence the deformation of the stamped section. An experimentally verified finite element model has been developed for the waveform stamping-springback of 3003Al-H14 thin-walled flat tubes with microchannels. This model was used to investigate the impact of forming dimensions such as section height, tube blank wall thickness, and relative bending radius scaling factors of the inner and outer surfaces on the section deformation ratio and average section deformation ratio. The research findings are as follows: ① The section deformation ratio of the holes at the upper edge of the cross-section is generally larger, while the deformation ratio of the remaining holes is relatively small and consistent in size. The section deformation ratio of the holes on the longitudinal section exhibits a distribution pattern with high peaks and valleys and low values in the middle section. ② The section deformation ratio of the flat tube increases with the increase in section height. When the section height exceeds 4 mm, the ribs inside the flat tube significantly bend, leading to severe collapse of the cross-section. ③ The average section deformation ratio of the flat tube decreases exponentially with increasing wall thickness. When the wall thickness equals 0.1 mm, all sections exhibit severe distortion, while when the wall thickness exceeds 0.3 mm, the maximum section distortion ratio decreases to 24.71%. ④ A larger scaling factor of the relative bending radius of the inner and outer surfaces results in a smaller actual bending degree of these surfaces and a smaller average section deformation ratio. This study has scientific significance and engineering value for the precise forming of thin�瞱alled microchannel waveform flat tubes.