Txoj kev vuam zoo tshaj plaws rau titanium thiab titanium alloys yog tungsten electrode inert gas shielded welding thiab molten electrode inert gas shielded vuam, sib sau ua ke hu ua argon arc vuam. Cov khoom siv vuam tseem ceeb siv yog titanium thiab titanium alloy vuam hlau, argon roj thiab tungsten electrodes.
1. Titanium thiab titanium alloy vuam hlau rau marine engineering
Qhov sib xyaw ntawm titanium thiab titanium alloy argon arc vuam hlau yuav tsum zoo ib yam li cov hlau puag, uas yog, cov xaim xaim feem ntau yuav tsum tau ua los ntawm cov ntaub ntawv homogeneous. Txhawm rau txhim kho cov yas ntawm qhov sib koom ua ke, vuam hlau nrog qis alloying degree dua li lub hauv paus hlau tuaj yeem siv. Piv txwv li, TAI vuam hlau tuaj yeem siv thaum vuam TA2. Cov ntsiab lus impurity ntawm vuam hlau yuav tsum qis dua li ntawm lub hauv paus hlau. Titanium vuam hlau yog nkag rau hauv lub tshuab nqus tsev annealed, thiab qhov saum npoo yuav tsum tsis muaj qhov tsis xws li cov tawv nqaij kub hnyiab, tawg, oxidation, metallic lossis non-metallic inclusions, thiab lwm yam.
2. Kev tiv thaiv roj argon thiab cov kev cai
Inert gas tiv thaiv yog yuav tsum tau thaum titanium alloy vuam, thiab argon, ammonia los yog argon-ammonia tov roj yuav siv tau raws li cov shielding roj. Peb lub teb chaws feem ntau tsuas yog siv cov roj argon los tiv thaiv cov roj, yog li nws yog hu ua argon arc vuam.
Argon roj rau vuam titanium thiab titanium alloys yog thawj-qib argon roj. Cov kev cai rau kev siv roj argon rau vuam yog ua raws li cov qauv hauv tebchaws GB/T4842-2006 thiab GB/T10624-1995. Cov kev cai tseem ceeb rau argon yog: purity, argon 99.99%; ya raws<0.002mg/L; relative humidity not greater than 5%; the residual pressure value retained in the argon cylinder should not be less than 0.2MPa.
Yog tias qhov purity ntawm argon roj tsis tsim nyog, nws txhais tau hais tias muaj ntau dhau impurities xws li oxygen, nitrogen thiab hydrogen. Cov pa oxygen thiab nitrogen yuav yaj mus rau hauv lub pas dej welding thiab ua rau cov hlau welded nkig. Cov hydrogen ntau dhau yuav ua rau cov khoom siv vuam porosity tsis xws luag, thiab lwm yam impurities yuav txo qhov tawg ntev ntawm vuam arc.
Lub purity ntawm xenon tuaj yeem txheeb xyuas tau yooj yim los ntawm kev soj ntsuam cov xim ntawm cov vuam. Txoj kev tshwj xeeb yog thawj zaug siv lub tungsten electrode los ignite lub arc ntawm titanium phaj thiab ua kom nws ruaj khov. Thaum ib cheeb tsam melting yog tsim rau ntawm titanium phaj, tam sim ntawd tua lub arc. (Argon gas tseem ntws nyob rau lub sijhawm no) los soj ntsuam. Yog tias qhov sib koom ua ke qhia pom cov xim dawb, nws txhais tau hais tias qhov purity ntawm argon roj yog siab. Koj tuaj yeem soj ntsuam cov xim ntawm cov tungsten cua sov los txiav txim qhov degree ntawm argon roj. Yog hais tias cov tungsten cua sov xaim qhia cov xim oxidized nyob rau hauv kev tiv thaiv ntawm argon roj tom qab cua sov, uas yog, nws tsis yog silvery dawb, ces qhov no qhia tau hais tias cov roj nyob rau hauv lub raj mis no tsis ntshiab txaus.
