Vuam siv txoj kev thiab ceev faj electrodes Hardfacing: 1, tus electrode yuav tsis muab kub, nyiaj, tooj, txhuas casting hlau clear surfacing. 2, no electrode surfacing vuam txheej tau machining, zauv los yog kev sib tsoo log li. muaj. Tej roj tsuas txiav tau muaj ib lub cav txiav. 3, ua ntej yuav vuam weldment tshem xeb, roj thiab lwm yam kev impurities. Xws li tej yam kuj vuam daim tau cua sov rwb thaiv tsev. 4, txhob siv ib feem me me no luv-arc vuam, kom tsis txhob kub txog alloying hais. 5, siab alloy vuam hlau ntawv yuav muaj txuj kev ncau ntau surfacing, surfacing feem ntau yog 1-3 khaubncaws sab nraud povtseg. 6, thaum tej txheej vuam, kub vuam lawm one-time zoo tshaj kub rau txoj kab hmoov rwb thaiv tsev, puas kuj tsis tu ncua, yuav ua rau kom nws ua tej yam hauj. 7, rov yav tom ntej yog lub vuam, tus vuam yuav muaj welded yuav pib sib tsoo uas txheej cam thawj txoj hauj lwm tiav, thiab ib tug lawm maj vuam yog dua li ib weldment, vim txheej cam kom ntxiv tseem cia nrog thiab qhov ceev cua kub thiab txias ceev yuav zam tau los ua tus tu phenomenon. 8, xws li vuam noo, ham txheej ntawm ib nrab Chu stomatal tam sim no, ces koj yuav tau saib kom qhuav saum 500 ℃ 1-2 xuab moos kev siv electrode yog ib qho zoo. Surfacing rau ntawm ntug hauv workpiece qhov chaw los yog yuav qha txheej coj, kuj corrosion, kub kuj vuam ntawv txheej hlau. Mus kho thiab ua kom txoj hauj lwm ntawm ib sab, lub meej pem siv cov ntaub ntawv, txhim kho kev kawm tshuaj, txo nqi thiab muaj teeb meem loj economic nyiaj.
Surfacing ua hauj lwm thiab tus mob uas ua hauj lwm yuav nyuab heev, yuav tsum tau xaiv raws li yuav tsum sib txawv ntawm txoj kev electrodes thaum vuam. Txawv lub workpiece thiab vuam electrodes rau lub txawv vuam dab, thiaj li yuav tau welding lub ntsiab fee.
Cracking surfacing tsimnyog ntau qhov teeb meem no, tiv thaiv cracking lub ntsiab tswvyim yog:
1, preheat, interpass kub tswj, cua txias tom qab vuam qeeb.
2, kev nyuaj siab kev kho cua sov nyem tom qab vuam.
3, tej txheej surfacing tsis txhob cracking thaum siv tsawg hydrogen vuam electrodes.
4, yog tsim nyog, surfacing txoj kev hloov ntawm overlay thiab puag hlau (tsawg tshaj, cov siab toughness electrodes).
Cracking lub workpiece thiab weld hlau qha cov txheej, yog ib tug tib neeg txoj kev sib raug ntawm cov alloying hais, kom kub preheat yog feem ntau raws li electrodes siv los laij cov nqi tshaj cov.
Cov mis mos tshaj yog raws li nram no:
Ceq = C + 1 / 6Mn + 1 / 24Si + 1 / 5Cr + 1 / 4Mo + 1 / 15Ni
Qhov xwm qauv yog tsim rau cov uas tsis muaj, nruab nrab, thiab siab thiab hlau uas tsis muaj alloy.
Pa roj carbon tshaj (%) preheating kub cov tshaj (%) preheating kub saum ≤0.40 100 ℃ ≤0.70 250 ℃ ntau tshaj li ≤0.50 150 ℃ saum ≤0.80 300 ℃ ≤0.60 200 ℃ ntau tshaj li ≤0.90 350 ℃
Hlau loj manganese thiab austenitic stainless hlau, txhob muaj sij hawm sov tuaj. Hlau siab alloy preheat kub siab tshaj 400 ℃.
Surfacing nyhuv zej ham hardness txheej, kuj coj thiab zog kuj kub, cov qib kawm uas rau yam nram qab no:
1 vuam tam sim no lub cev me, arc ntev. Tam sim no, arc ntev, alloying hais thiab easy hlawv, rau qhov cuag, paaj alloying hais txoj kev hloov.
2 preheat qhov kub thiab txias, txias qeeb mob seb kev surfacing txheej.
3 ib co welding hlau kub kho yam mob txawv hardness.
Hardness thiab tshuaj muaj pes tsawg leeg surfacing txheej hais txog peb lossis ntau tshaj ntawm xov surfacing qhov tseem ceeb tshaj plaws yog xaiv tau tus qauv zoo, nyob ntawm lub chaw ua hauj lwm cheeb tsam thiab qhov yuav tsum tau xaiv ib tug tswv txawv hardfacing vuam vuam
Vuam electrodes siv
Txheem tiav GB984-2001
Surfacing rau ntawm ntug hauv workpiece qhov chaw los yog yuav qha txheej coj, kuj corrosion, kub kuj vuam ntawv txheej hlau. Yuav kho thiab txhim kho lub neej muab kev pab ntawm qhov chaw, kev siv ntaub ntawv, meej pem zoo productivity
Yam khoom ntawv, txo nqi tau qhov nyiaj pab economic.
Surfacing ua hauj lwm thiab tus mob uas ua hauj lwm yuav nyuab heev, yuav tsum tau xaiv raws li yuav tsum sib txawv ntawm txoj kev electrodes thaum vuam. Txawv lub workpiece thiab vuam electrodes rau lub txawv vuam dab, thiaj li yuav tau ib heap fee
Vuam tau.
Cracking surfacing tsimnyog ntau qhov teeb meem no, tiv thaiv cracking lub ntsiab tswvyim yog:
1, preheat, interpass kub tswj, cua txias tom qab vuam qeeb.
2, kev nyuaj siab kev kho cua sov nyem tom qab vuam.
3, tej txheej surfacing tsis txhob cracking thaum siv tsawg hydrogen vuam electrodes.
4, yog tsim nyog, surfacing txoj kev hloov ntawm overlay thiab puag hlau (tsawg tshaj, cov siab toughness electrodes).
Cracking lub workpiece thiab weld hlau qha cov txheej, yog ib tug tib neeg txoj kev sib raug ntawm cov alloying hais, kom kub preheat yog feem ntau raws li electrodes siv los laij cov nqi tshaj cov.
Cov mis mos tshaj yog raws li nram no:
Ceq = C + 1 / 6Mn + 1 / 24Si + 1 / 5Cr + 1 / 4Mo + 1 / 15Ni
Qhov xwm qauv yog tsim rau cov uas tsis muaj, nruab nrab, thiab siab thiab hlau uas tsis muaj alloy.
