Number：

103B_ME1_010

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Name：

Titles：

Author：

王衍展、曾憲中、鄭澤明

Y.C. Wang，S.C. Tzeng，T.M. Jeng

Paper name：

汽車用鋼板點銲方法研究

Study spot welding method of automobile steel sheets

Name of activity：

中華機械工程學會第三十一屆全國學術研討會論文集

Keywords：冷軋鋼板、鍍層、點銲

Cold rolled steel，Coating，Spot welding

Abstract：

將鍍層鋼板與無鍍層冷軋鋼板利用銲核強度測試(TSS & CTS)以ZIS Z3136、Z3137的規範進行實驗以了解鍍層種類、鍍層與鋼板厚度對銲接性能的影響，結果發現鍍鋅銲板點銲時由於鋅先熔化，並產生鋅環，從而使試樣真實的接觸面積擴大，為得到同樣尺寸的熔核，銲接電流要比無鍍層鋼板的大。在其他參數相同而鋼板厚度不同時，則銲接電流隨板厚的增加而升高。普統冷軋鋼板銲核強度值(TSS & CTS)

均大於鋅鐵合金熱鍍鋅板。最後將獲得之銲核強度曲線可轉換為銲核破裂趨勢圖，作為銲核品質與銲接製成設計之評估依據。

The coated steel cold-rolled steel coated with non-nuclear use weld strength test(TSS & CTS)to JIS Z3136，Z3137’s specifications for experiments to understand influence of coating type，thickness of coating and steel sheets on the properties of spot welding. When found galvanized sheet spot as a result，the real contact area was increased and the current density was decreased. The welding current for the galvanized steel was higher than that of cold rolled steel without zinc coating in order to obtain the same diameter of nugget. With the increase of thickness for steel sheets while the other conditions are the same，the welding current will increase. Ordinary cold-rolled steel weld nugget intensity value(TSS & CTS)are greater than the zinc alloy hot dip galvanized sheet. Finally，the weld nugget intensity curve obtained can be converted to weld nugget of rupture trends，as assessed weld nugget quality and process design basis.