畢業(yè)論文--汽車焊接技術現狀及發(fā)展趨勢

1、汽車焊接技術現狀及發(fā)展趨勢姓 名： 名： 何 詩 玉 學 號： 號： 06399018 06399018 專 業(yè)： 業(yè)： 焊接技術及自動化 焊接技術及自動化 班 級： 級： 材料 材料 0631 0631 指導教師： 指導教師： 葛 柏 青 2008 年 12 月 3 日摘 要： 要：焊接是現代機械制造業(yè)中一種必要的工藝方法，

2、在汽車制造中得 到廣泛的應用。汽車的發(fā)動機、變速箱、車橋、車架、車身、車廂六大總成都離不開焊接技術的應用。在汽車零部件的制造中，點焊、凸焊、縫焊、滾點 （凸）焊、焊條電弧焊、CO2 氣體保護焊、氬弧焊、氣焊、釬焊、摩擦焊、電子束焊和激光焊等各種焊接方法中，由于點焊、氣體保護焊、釬焊具有生產量 大，自動化程度高，高速、低耗、焊接變形小、易操作的特點，所以對汽車車身薄板覆蓋零部件特別適合，因此，在汽車生產中應用最多。在投資費用中點焊約占 7

3、5%，其它焊接方法只占 25%。關鍵詞 關鍵詞：點焊、凸焊、縫焊、滾點（凸）焊、焊條電弧焊、CO2 氣體保護焊、氬弧焊、氣焊、釬焊、摩擦焊、電子束焊和激光焊。生產量大、自動化程度高、高速、低耗、焊接變 形小、易操作。English abstract:The welding is in the modern machine-building industry one essential technique, obtains the wid

4、espread application in the automobile manufacture. Automobile's engine, the gear box, Che Qiao, the frame, the automobile body, the compartment six big total Chengdu cannot leave the bonding technique the applicatio

5、n. In the automobile spare part's manufacture, the spot welding, welds, the seam to weld, rolls (raised) to weld, the welding rod arc welding, the CO2 shielded welding, the argon arc welding, the gas welding, the bra

6、ze welding, the friction welding, the electron beam welding and the laser raised welds and so on each welding method, because the spot welding, the shielded welding, the braze welding have the productivity to be big, t

7、he automaticity is high, high speed, the low consumption, the welding deformation small, easy to operate characteristic, therefore to automobile body thin steel plate cover spare part especially qualify, therefore, appli

8、es many in the automobile production. The spot welding approximately composes 75% in the investment expenses, other welding method only accounts for 25%.Key word: The spot welding, welds, the seam to weld, rolls (raised

9、) to weld, the welding rod arc welding, the CO2 shielded welding, the argon arc welding, the gas welding, the braze welding, the friction welding, the electron beam welding and the laser raised welds. The productivity