Cov txheej txheem rau melting titanium rods thiab titanium alloy pas nrig cov ntaub ntawv
Titanium alloy smelting txoj kev: lub tshuab nqus tsev consumable hluav taws xob arc rauv smelting txoj kev (hu ua VAR txoj kev), non-consumable nqus arc rauv smelting txoj kev (Jianni NC txoj kev), txias hearth smelting txoj kev (hu ua CHM txoj kev), txias lauj kaub smelting txoj kev ((hu ua CCM method), electroslag melting method (hu ua ESR method).
1. Nqus khoom siv hluav taws xob arc rauv melting txoj kev (hu ua VAR txoj kev)
Nrog rau txoj kev loj hlob ntawm lub tshuab nqus tsev thiab kev siv computers, VAR txoj kev tau dhau los ua kev lag luam loj hlob sai rau titanium. Feem ntau ntawm cov titanium niaj hnub no thiab nws cov alloy ingots yog tsim los ntawm txoj kev no. Cov yam ntxwv tseem ceeb ntawm VAR txoj kev yog kev siv hluav taws xob tsawg, siab melting ceev thiab zoo zoo rov ua dua tshiab. Lub ingot melted los ntawm VAR txoj kev muaj cov qauv siv lead ua zoo thiab cov tshuaj lom neeg muaj pes tsawg leeg.
Cov yam ntxwv tshwj xeeb thiab qhov zoo ntawm cov khoom siv VAR niaj hnub no:
(1) Tag nrho coaxial zog input, uas txhais tau hais tias ua tiav coaxiality thoob plaws hauv qhov siab ntawm lub cub tawg, yog hu ua coaxial fais fab mov, uas txo qhov tshwm sim ntawm kev sib cais;
(2) Kev ntsuas hluav taws xob hauv lub crucible tuaj yeem raug kho kom zoo nyob rau hauv X-axis / Y-axis kev taw qhia.
(3) Nws muaj qhov tseeb electrode qhov hnyav kom ua tiav qhov nrawm nrawm. Nws tsis tsuas yog ua kom lub melting zoo, tab sis kuj xyuas kom meej lub repeatability thiab sib xws ntawm txhua melting.
(4) Flexibility, uas yog, ib lub cub tawg tuaj yeem tsim ntau hom ingots thiab nce qhov loj ntawm ingots, uas tuaj yeem txhim kho cov khoom tsim tau zoo.
(5) Nws muaj kev lag luam zoo.
Txoj kev "coaxial fais fab mov" tuaj yeem zam kev sib nqus tawm los ntawm qhov tsis sib npaug ntawm cov khoom siv tam sim no ntawm lub crucible, tsis muaj zog lossis tshem tawm cov kev cuam tshuam tsis zoo ntawm cov khoom sib nqus ntawm cov khoom smelting, thiab txhim kho cov khoom siv hluav taws xob, yog li tau txais cov khoom siv ruaj khov.
Niaj hnub no VAR cov cub tawg tuaj yeem smelt loj ingots nrog txoj kab uas hla ntawm 1.5m thiab qhov hnyav ntawm 32t. Muaj teeb meem kev daws teeb meem: ua ntej, txoj kev npaj electrode. Txoj kev npaj electrode yog cumbersome heev. Ib qho xovxwm kim yog yuav tsum tau yaj daim txhuam cev titanium thiab master alloy. Thiab cov khoom seem rov qab los yog nias rau hauv cov khoom siv hluav taws xob lossis ib qho hluav taws xob me me. Ib qho electrode kuj yuav tsum tau welded rau hauv cov khoom siv hluav taws xob. Nyob rau tib lub sijhawm, txhawm rau kom ntseeg tau qhov sib xws ntawm cov khoom siv hluav taws xob, nws tseem yuav tsum tau teeb tsa cov ntaub, hnyav, sib tov, thiab lwm yam. Qhov thib ob, muaj qee zaus metallurgical tsis xws luag xws li kev sib cais, xws li kev sib cais sib cais thiab kev sib cais sib cais. Qhov qub yog tshwm sim los ntawm qhov tsis sib xws ntawm cov khoom impurity los yog cov ntsiab lus alloying nyob rau hauv cov electrode, uas solidifies ua ntej qhov kev faib yuav sib npaug thaum smelting; qhov tom kawg yog tshwm sim los ntawm qee zaus kev qhia txog kev sib koom ua ke siab (HDI) thiab qis-density inclusions (HDI) rau hauv cov khoom siv raw lossis cov txheej txheem. LDI), cov inclusions no tsis tuaj yeem yaj tag nrho thaum lub sij hawm smelting txheej txheem, uas ua rau muaj teeb meem loj heev inclusions thiab lwm yam metallurgical tsis xws luag.
2. Non-consumable nqus hluav taws xob arc rauv melting txoj kev (Jianmi NC txoj kev)
Tam sim no, dej-txias tooj liab electrodes tau hloov tungsten-thorium titanium electrodes los yog graphite electrodes nyob rau hauv thawj theem ntawm kev lag luam titanium, daws cov teeb meem ntawm kev lag luam muaj kuab paug, ua rau NC txoj kev yog ib txoj kev tseem ceeb rau smelting titanium thiab titanium titanium. Ob peb tons ntawm NC Lub cub tawg tau ua haujlwm hauv Tebchaws Europe thiab Tebchaws Meskas.
Qhov zoo ntawm NC txoj kev smelting yog:
(1) Cov txheej txheem ntawm nias electrodes thiab vuam electrodes tuaj yeem raug tshem tawm;
(2) Nws tuaj yeem ua rau arc nyob ntawm cov khoom siv rau lub sijhawm ntev, yog li txhim kho qhov sib xws ntawm cov khoom sib xyaw;
(3) Cov khoom siv raw ntawm cov duab sib txawv thiab qhov ntau thiab tsawg tuaj yeem siv tau, thiab 100% cov khoom seem tuaj yeem raug ntxiv thaum lub sij hawm smelting kom paub txog titanium recycling. Raws li ib zaug smelting, NC txoj kev yog qhov zoo heev los ntawm qhov kev xav ntawm kev txhim kho tus nqi rov qab ntawm cov khoom seem thiab txo cov nqi. Feem ntau, NC furnaces thiab VAR furnaces yog siv ua ke los muab kev ua si tag nrho rau lawv qhov zoo.
3. Cold hearth melting method (CHM txoj kev luv luv)
Metallurgical inclusion defects nyob rau hauv titanium thiab titanium alloy ingots tshwm sim los ntawm raw khoom paug thiab txawv txav txheej txheem smelting ib txwm cuam tshuam rau daim ntawv thov ntawm titanium thiab titanium alloy nyob rau hauv lub aerospace teb. Txhawm rau tshem tawm cov khoom siv hlau sib xyaw hauv titanium alloy aircraft cav rotating qhov chaw, txias hearth smelting tshuab tau los ua. Qhov loj tshaj plaws ntawm CHM txoj kev yog kev sib cais ntawm melting, refining thiab solidification txheej txheem, uas yog, molten nqi nkag mus rau hauv lub txias hearth thiab yog thawj melted, ces nkag mus rau lub refining cheeb tsam ntawm lub txias hearth rau refining, thiab thaum kawg solidifies rau hauv ingots. hauv thaj tsam crystallization.
