Kuv puas tuaj yeem siv 7018 rau Hardfacing?

Hardfacing yog txheej txheem ntawm kev tso cov khoom siv-tiv taus, corrosion-resistant lossis high-kub-resistant coings rau ntawm vuam thev naus laus zis. Nws yog dav siv nyob rau hauv tsuas Machinery, cov khoom siv xis mas, metallurgical chais thiab lwm thaj teb. Tsis ntev los no, cov neeg siv tau sau cov lus nug ntawm "seb E $ 708 vuam pas nrig tuaj yeem siv rau hardfacing vuam". Kab lus no ua ke cov ntaub ntawv tshawb fawb txog kev lag luam nrog kev xyaum muaj kev lag luam los ua kev ntsuas ntawm qhov teeb meem no.

E7018 yog cov tshuaj loj qis hom vuam pas nrig, paub txog nws lub zog kub, tawg, thiab yog txuas ntxiv rau cov qauv hluav taws xob (xws li txuas hniav thiab vaj tse). Nws cov yam ntxwv tseem ceeb muaj xws li:

• Tshuaj lom neeg tshuaj: muaj 5.4% manganese (mn), tsuas yog hlau (fe) raws li alloy.
• Cov cuab yeej kho tshuab: tensile zog 510-590 mpa mpa}} mpa mpa} mpa, elongation 24% {3}}%.

• Cov Txheej Txheem Vuam: Tsuas yog txhawb nqa luv luv-Circuit Cock hloov hom, haum rau lub vuam ncaj thiab ntsug vuam

Txawm li cas los xij, cov ntsiab lus tseem ceeb ntawm Hardfacing vuam yog qhov kev ua tau zoo (feem ntau xav tau hrbides (uas yuav tsum tau carbides (xws li CR7C3, xws li CREIT) lossis MARSENSITURE qauv. Lub hardness ntawm 7018 vuam pas nrig (txog 29.5 HB tom qab vuam) yog ntau li Edzcracing vuam cov pas nrig, uas tuaj yeem ncav cuag hrc 55-56).

• Hardfacing yuav tsum muaj cov pa roj carbon ntau thiab cov roj chromium ntau (xws li CR13, cr 20-35%) los ua cov carbides. 7018 cov hluav taws xob tsis muaj cov ntsiab lus zoo li no thiab tsis tuaj yeem tsim kom muaj txiaj ntsig txaus hnav kauj ruam (xws li CR7C3).
• Txawm hais tias lub manganese cov ntsiab lus ntawm 7018 tuaj yeem txhim kho kev nruj, manganese oxides (mNO, mn3o4) yog yooj yim nkig ntawm cov kub, txo cov kev coj tsis kam.

• Hardfacing requires controlling the dilution rate (base material melting ratio) to maintain coating performance. 7018 electrodes are mostly used for deep penetration welding, and the dilution rate is high (>20%), uas yuav ua rau tsis muaj zog ntawm cov txheej cladding.
• Tshwj xeeb Hardfacing vuam cov ntaub ntawv (xws li cov xov hlau-flux)

• Kev kho kho mob ib ntus: 7018 tuaj yeem siv rau kev kho kev kub ntxhov nrog cov coj qis qis (xws li hnav me me hnav steel qauv), tab sis lub neej lub neej luv.
• Tsis muaj feem xyuam rau cov xwm txheej siab: rau ntu xws li Mininess Rauj thiab cov av nkos cov ntaub ntawv uas muaj siv carbide nyuaj yuav tsum tau siv.

• CR13 stainless hlau vuam hlau: tom qab ntxiv mo thiab ni, lub hardness ntawm lub surfacing txheej nce mus txog hrc {1}} {kub hnav tsis kam yog txhim kho los ntawm 30%.
• Fe raws li flux-cored vuam hlau: muaj cr 20-35}}}}}}}} lub sij hawm ntawm cov khoom siv hauv paus.
• Cobalt-based alloy (stellite 12): Lub hardness mus txog 700 hV tom qab laser surfacing, uas yog tsim nyog rau siab-ua swb chaw nyob.

Yog tias 7018 xav tau siv ib ntus, nws raug pom zoo:

• Tom qab-tshav kub kho: tempering thaum {1}}} degree tuaj yeem nce kev tawv me me.
• Ntau txheej surfacing: txo qhov kev cuam tshuam ntawm cov dilutionion, tab sis cov interlayer kub yuav tsum tau tswj kom tiv thaiv kom tsis txhob tawg.

• Muab qhov tseem ceeb rau cov ntaub ntawv vuam tshwj xeeb: HYDCRCMO VUAM HLAU, thiab lwm yam.
• Cov txheej txheem optimization: Siv submerged arc vuam los yog laser kev sib tw, tswj cov lus qhia thaum tshav kub los txo cov khoom siv hluav taws xob kom txo tau cov dilution.
• Kev tiv thaiv kev nyab xeeb: 7018 vuam pas nrig muaj cov manganese, thiab cov cua yuav tsum muaj zog siv thaum lub sijhawm vuam tsis txhob kis rau manganese fumes.

Txawm hais tias e 7018 vuam pas nrig ua tau zoo nyob rau hauv vuam, lawv muaj pes tsawg leeg thiab kev ua tau nyuaj kom tau raws li lub siab hardness thiab kev coj ua ntawm cov hardfacing. Hauv kev kho kev lag luam, nws raug nquahu kom siv cov ntaub ntawv vuam tshwj xeeb uas muaj cov txheej txheem carbide (KB)