W el di ng T echn ol ogy V01．42N o．8A ug．2013英文标题、摘要及关键词I M A I N T O PI C S，A B ST R A C T S＆K E Y W oR D S
C ol d s pr ay t echnol ogy a nd i t s a ppl i ca t i on i n par t s r enew al and pr epar at i on of f unct i onal c oa t i ng
W A N G C un—zo吲”，Y A N G Sen2，M A B i嘭，FEN G Sheng-qi anf
(1．N i ngbo B r a nch of C hi na A ca de m y of O r dn ance Sci ence，N i ngbo315103，Zhej i ang pr o．，C hi na；2．School of M a t er i al Sci ence and Engi neeri ng，N anj i ng U ni ve r si t y of Sci ence and Technol ogy，N anj i ng310027，J i angsu pr o．，C hi na)P1—5
A bst r act：C om par ed w i t h t he t ec hni cal char act er i s t i cs of t he convent i ona l t her m al s pr a y，t he t ec hni cal char act er i s t i cs of col d spr ay w as i nt r oduce d．E m phas i s w as put o n t he m ec hani s m of col d
s pr ay and t he key t ec hnol ogi es of i t s t ec hni que．O n t hi s ba si s，t he r e sear ch devel opm ent s of t he part s r enew al and t he pr e par a t i on of f unct i onal coa t i ng
w i t h col d s pr ay w e r e de scr i bed．T he devel opm ent t r ends and appl i cat i on
pr ospec t
of col d spr ay w er e di scus sed．
K ey w ords：col d s pr ay，cr i t i c al vel oci t y，par t s r e ne w al，f unct i onal coa t i ng
A na l ys i s of l ow-t em per at ur e t oughness of w el ded j oi nt i n l ow-gr ade SA W H pi pe
L I Ji an。yi，W A N G Q i ng-guo，L I U Shu—l i ng，C H E N N a n，G U O Pan—gan g，C U I R un—xi ang，FU X ue—qi ang (C N PC B ohai E qui pm ent M anuf a ct ur i ng C o．，L t d．，Q i ngxi an062658，H ebe i pr o．，C hi na)P6—8
A bs t r act：The C harpy i m pa c t t est r e suhs of L290gr a de SA W H pi pe w el d and H A Z used i n l ocal gas pi pel i nes(s uch a s
B ei j i ng ci t y，H ebei pr o．)r ecent l y w e r e anal yzed．The r esul t s s how ed t hat w i t h t he i ncr e ase i n pi pe w al l t hi cknes s，t he w el d he at i nput i ncr e ase s，a nd t he w el d
C har py i m pact ener gy de cr e ase s．T he H A Z ha ve good C harpy i m pact t oughnes s．The hi ghe r ba s e m et al C ha r py i m pact ener gy，t he hi ghe r H A Z C har py i m pact ener gy，and t he gr eat e r di f f er ence bet w een t hem．
K ey w or ds：L290(X42)，w el de d j oi nt，l ow—t em per a t ur e t oughness，SA W H pi pe
St ud y on w el di ng t herm al s i m ul at i on of Q890s t eel
L I D eng-hu i l，L U O C hua n-z honf，G U J i an-j un2，L I凡-yo，谚，W EI J i n—shan3，W EN Ji u—ba l
(1．School of M at er i al s Sci ence and E ngi neer i ng，H enan U ni ver si t y of Sci ence and Technol ogy，Luoyang471003，
H e nan pr o．，C hi na；2．Zhe ngz hou C oal M i ni ng M ach i ner y G r ope C o．，L t d．，Z hengz hou450013，H enan
pro．，C hi na；3．I nst i t ut e f or St r uct ur al M a t er i al s，C ent r a l I r on&St eel R es ear ch I nst i t ut e，B ei j i ng100081，C hi na)P9一11
A bs t r act：T he si m ul at ed H A Z cont i nuous cool i ng t r ansf or m at i on cu r v e of t he Q890s t eel w as m apped us i ng t he t her m al si m ul at i on t ec hnol ogy．The c ar bon equi val e nt and t he m axi m um ha r dnes s of t he Q890s t eel H A Z w e r e
cal cul a t ed．T he r esul t s s how t hat t he s t eel
eas y t o be quenched has t he col d c r a ck
se nsi t i vi t y．
K ey w or ds：Q890st eel，t herm al si m ul at i on，col d c r a ck se nsi t i vi t y，SH—C CT cu r v e
St r uct ur e a nd pr op er t y of L F21a l um i num a l l oy／1C r l8N i9T i st ai nl es s s t eel br azed j oi nt by hi gh f r equency i nduct i on br azi ng
Y U A N B01，PE I Li che，l矿，L I N i耐，W E N Y ua n—hua2，Y A N Ji a-zhenl
(1．School of M anuf a ct ur i ng Sci ence and Engi neeri ng，Si chuan U ni ver s i t y，C hengdu610065，Si c huan pr o．，C hi n a；