?2-2 ????????? Fusion Welding and Brazing Welding - PowerPoint PPT Presentation

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?2-2 ????????? Fusion Welding and Brazing Welding

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2-2 Fusion Welding and Brazing Welding (Electric Arc) Base Metal ... – PowerPoint PPT presentation

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Title: ?2-2 ????????? Fusion Welding and Brazing Welding


1
?2-2 ?????????Fusion Welding and Brazing Welding
  • ???????
  • ??(Electric Arc)??,??????(Base Metal)???(Covered
    Electrod)
  • ??(Droplet)??????
  • ??(Fused Bath)?????????
  • ??(Coating)?????,????(Slag),?????
  • ???????,????????

2
1. ????
  • ???????
  • ???????
  • ???Negative Polarity Zone??????????36
  • ???Anode Region????????????43
  • ???Arc Colume????21???

3
2.??????
4
(1)???????
  • ??
  • ????????,
  • ?????????????????
  • ??
  • ???????,?????????,???????????????
  • ?????????,?????????????
  • ??????????,?????????????????

5
??????
6
(2) ????
  • ???????????????,?????????,?????,?????,????,????,?
    ??????,???????,???????,????????

7
  • ???????????????
  • ????????????????(?SiO2,MnO2?)
  • ????????????????(?CaO?)???(CaF2)???????????????,?
    ??????????????,??????????

8
(3)???????
  • ??????????????????
  • ????,???????E???????

9
(No Transcript)
10
  • ???????????????????
  • ??????????????,????,???????????????,?????????
    ??????????? ?J422?J507?.

11
(No Transcript)
12
(No Transcript)
13
(4)?????
  • ????????????????????
  • ???? ??????????????,?16Mn?sb?520MPa,???J506?J50
    7 ?.
  • ??????????(????????)????? ?
    ,?????????,?????????.

14
  • ????????????
  • ??????????????????.
  • ??????????.
  • ????????????
  • ?????????
  • ???????,???????????,?????????

15
?? 1????????????? 2????????????????? E4303,
E5015, J422, J507
16
????? Submerged Arc Welding
  • ??????????
  • ??
  • ???????????
  • ??????
  • ????????????????,????,?????????????

17
2. ???????????
  • ????

18
??????
19
(No Transcript)
20
3. ?????????
  • ????,???????
  • ??????
  • ??????
  • ???????????????????????,??????????,???????????????
    ??????
  • ?????3mm????????
  • ????Al?Ti????????????
  • ????????????

21
??????? Gas Shielded Arc Welding
  • ????????????????????????
  • ???????????
  • ??????
  • ??????

22
1. ???????
  • (1)?????????
  • ??????????????????
  • Ar???,????????,???????????????,?????
  • He???????,????,????,????

23
  • ?????(TIG? )
  • ???????
  • ?????
  • ????????,????
  • ?????? (MIG?)
  • ?????
  • ???,?????,????,?????

24
(2)???????
  • ?????,?????????????
  • ????? ,???????????????????????,??????

25
2. CO2?Carbon-Dioxide Arc Welding
  • ????

26
  • ??????????
  • ?????
  • ??????,????,CO2???????

27
?????
  • ??????????????????????????????

28
?????
29
?????
30
?????
31
????
  • ????
  • ?????????
  • ?????????????

32
1.???Brazing
  • ??????450????
  • ???????,?????
  • ????????????????????,???????????

33
2.???Soldering
  • ??????450????
  • ???????,?????
  • ????????????

34
??????????????
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