高頻電阻焊接製程改善之研究

Study on improvement of HF-ERW processes

林於品(Yu-Pin Lin)

指導教授 ： 李正國

共同指導教授 ： 譚安宏

健行科技大學/工程學院/機械工程系碩士班/碩士(2019年)

摘要

本論文研究電阻焊(Electric Resistance Welding，ERW)鋼管製程中有焊疤及焊珠現象發生後，變更製程參數減少焊疤及焊珠現象後對於鋼管的機械性質影響及金相流線角度影響的變化有何改變，使用田口分析法中，四變數三水準進行製程改善之研究。四變數為：材料、功率、線圈位置及擠壓量(SQ)四種變化。三水準為:標準、過大及過小三種水準，將製程改變後的鋼管成品，進行機械性質及金相微顯影角度進行研究。
實驗中使用鋼帶皆為中國鋼鐵生產之鋼帶，材質分別為SAE1010、SAE1015及T-1三種不同材質，相同厚度及寬度。經過日本製ERW製管機，在生產過程中不停車狀態下進行鋼鐵材料成分變更、功率大小、感應線圈位置前後變化及擠壓量(SQ)的改變。用四變數三水準進行L9田口分析進行研究。研究機械性質的抗拉強度、降伏強度及伸長率的變異。再由此結果來進行分析。
實驗結果發現藉由機械性質分析包括抗拉強度、降伏強度及伸長率，因鋼鐵材質變異改變影響最大，線圈位置、功率、擠壓量(SQ)的改變對於機械性質的影響不大。金相流線角度因鋼鐵材質、功率大小、擠壓量大小的改變對於金相流線角度的改變都有影響，需要再做金相確認避免不良管產生。

關鍵字

ERW ； 焊珠 ； 焊疤 ； 田口分析法 ； 機械性質 ； 感應線圈 ； 擠壓量(SQ)

並列摘要

In this paper, after the occurrence of weld defects and beading in the process of ERW steel pipe, the process parameters are changed to reduce the influence of the weld bead and the bead phenomenon on the mechanical properties of the steel pipe and the change of the influence of the metallographic flow line angle. In the law, four variables and three levels are used to study the improvement of the process. The four variables are: material, power, coil position and extrusion (SQ). The three standards are: standard, oversized and undersized. The finished steel pipe after the process is changed, and the mechanical properties and metallographic micro-developing angle are studied.
The steel strips used in the experiment are steel strips produced by China Steel. The materials are SAE1010, SAE1015 and T-1, respectively, with the same thickness and width. After the ERW pipe making machine made in Japan, the composition of the steel material, the power level, the change of the position of the induction coil, and the amount of extrusion (SQ) are changed without stopping during the production process. The L9 field analysis was carried out with four variables and three levels. Study the variation of tensile strength, lodging strength and elongation of mechanical properties. The result is then analyzed.
The experimental results show that the mechanical properties include tensile strength, lodging strength and elongation. The change of steel material variation has the greatest influence. The change of coil position, power and extrusion quantity (SQ) has little effect on the mechanical properties. The metallographic flow line angle has an influence on the change of the metallographic flow line angle due to the change of steel material, power size and extrusion quantity. It is necessary to confirm the metallographic phase to avoid the occurrence of bad tube.

並列關鍵字

ERW ； welding beads ； welding ； Taguchi analysis method ； mechanical properties ； induction coil ； extrusion volume (SQ)

參考文獻

(1) 電阻焊接管(ERW)的市場調查 Electric Resistance Welded(ERW)Pipes and Tubes

出版商:Global Industry Analysts,Inc 出版日期:2019/05/01。

(2) 宋志強; 孟強; 屈德強; 中海油(天津)管道工程技術有限公司ERW感應焊管焊縫質量的影響因素分析 Inevestigation of Factors Influencing Seam Quality of ERW Indction Welded Pipe.天津. 300452鋼管;西元2012年04期(2012/07/04)，P37-41 。

(3) 陸明和，畢洪運 <寶鋼技術> 2006年度第三期第23-26頁 ERW直縫焊管焊縫形態與金相檢驗評價 。

(4) 管材雜誌2002年06月Electric resistance welding at a glance 作者: GERALD WEIMER，RAY CAGGANELLO 。