Daim ntawv thov thiab thermite sib tov pes tsawg leeg

Aids rau kev siv technology tshiab dab nyob rau hauv kev tsim kho thiab feem ntau raus cov kev siv cov tshuaj tebchaw. Cov no muaj xws thermite sib tov, thiab uas muaj ib tug plurality ntawm formulations. Raws li ib tug tshwm sim ntawm kev siv xws compositions neeg siv tau txais los yog muaj zog cua sov los (nyob rau hauv vuam), los yog cov nyhuv ntawm ib tug av mechanism (nyob rau hauv pyrotechnic caws nplaum tshuab). Cov khoom xyaw rau thermite sib tov mas sawv cev los ntawm hlau ntsiab, tab sis muaj lwm yam tshuaj Cheebtsam. Lub caij nyoog muaj pes tsawg leeg ntawm sib tov yog txiav txim los ntawm tej yam kev mob ntawm kev siv thiab cov nyhuv ua li cas. Tog twg los txoj kev, zus tau tej cov ntsaum kab-rwg yog ua thiab tsis yog ib qho kws muaj txuj nyob rau hauv lub tsev.

Tom qab thiab muaj pes tsawg leeg

Tshuaj ntsaum kab-rwg yog ib pab pawg neeg monopropellant nyob rau hauv niaj hnub proportions muaj combustible Cheebtsam thiab oxidant. Lub specifics ntawm no sib tov thiab txiav txim seb nws muaj peev xwm mus zes txawm tsis muaj kev nkag rau saum huab cua. Tus yam ntxwv thiab thaj chaw ntawm lub thermite sib tov yog tso cai rau muab tso rau nws nyob rau hauv txoj kab nrog Bickford fuse thiab hmoov. Homogenous compositions tej zaum yuav manufactured nyob rau hauv ib tug gaseous daim ntawv. Rau lub hom phiaj no, ib tug haum ua ke ntawm cov roj thiab cov pa. Tej yam muaj xws li ntau dua uas yuav tsum tau rau lub lag luam thiab cov txij nkawm, txij li thaum lawv muaj ib tug txiav txim uas yuav muaj tawg.

daim ntawv thov

Nyob ntawm seb cov yam tshwm sim thiab pab tej yam kev mob ntawm kab-rwg yuav muab zog xws li thermal tej yam thiab ib tug pyrotechnic nyhuv. Pyrotechnic compositions yuav siv tau raws li teeb pom kev zoo txhais tau tias thiab nyob rau hauv qhov siv thiab ua lub teeb liab teeb. Tab sis lub ntsiab kev coj ntawm cov tswv yim siv ntawm kab-rwg - yog Vuam. Cov uas ua los ntawm tshav kub tebchaw txawv zog thiab durability.

Cov kev khiav hauj lwm hauv paus ntsiab lus ntawm cov thermite sib tov thaum lub sij hawm tsim ntawm stitches yog yaj muaj pes tsawg leeg ntawm hlau Cheebtsam, thiab cov uas muaj ib tug ruaj khov anti-corrosive compound. Tab sis nws yog ib qho tseem ceeb los xav txog tias privarochnaya system yuav tsum tau rau thermal vuam rau pipelines, muab tsis tau tsuas yog ib tug tooj liab termosmes tab sis crucible zoo nrog tiv cav tseb.

tsoos muaj pes tsawg leeg

Nyob rau hauv ib tug classic sawv cev ntawm cov tshuaj tus kab npaug - ib tug sib tov ntawm finely faib cov khoom xyaw hlau oxide thiab txhuas. Tej formulations yog feem ntau nyob rau hauv coob nyob rau hauv lub tsev ua hauj lwm (feem ntau Vuam) thiab kev lag luam. Qhov no yog vim hais tias qhov ua kom sib tov los ntawm igniting nrog kub taub hau thiab lub active kub tso tawm. Txawm tias hlau thermite sib tov yog feem ntau hu ua ferrumnaya, txhuas plays ib tug tseem ceeb luag hauj lwm nyob rau hauv nws cov kev txiav txim. Nyob rau hauv kev, aluminothermy txheej txheem txiav txim seb tus efficiency kev tshua uas vuam yog tau steelwork.

pyrotechnic muaj pes tsawg leeg

Lub hauv paus ntawm xws formulations yog tseem roj thiab ib tug oxidant, tab sis nyob rau hauv ib tug ntau daim ntawv. Rau Cheebtsam siv muaj xws li poov tshuaj chlorate (ib thooj ntawm cov muaj pes tsawg leeg), strontium carbonate (hais txog ib tug peb lub hlis twg) thiab leej faj colorant nplaim taws. Oxidant muaj nuj nqi ua poov tshuaj chlorate, thiab cov leej faj ua raws li ib tug roj caij. Nyob rau hauv tus txheej txheem ntawm combustion ntawm lub pyrotechnic thermite sib tov thiab nquag generates tshav kub, thiab tsub kom kub: pa luam yeeb compositions muab pua pua ntawm cov degrees, thiab teeb pom kev zoo mus txog 3000 ° C. Feem ntau, pyrotechnical sib tov yog siv rau cov thermal los, lawv kuj mob siab heev combustion yog nrog los ntawm tsim ntawm ib tug nplaim taws.

tooj liab sib tov

Kab-rwg, uas yog tam sim no nyob rau hauv muaj pes tsawg leeg tooj liab oxide, feem ntau yog txhob txwm manufactured rau txij nkawm ua hauj lwm nyob rau hauv lub vuam ntawm steel pipelines. High luag hauj lwm tsim cov pob qij txha ua nws tsim nyog los ua rau kom qhov ntim ntawm lub thermal zog tso. Vim li no, tooj liab thermite sib tov muaj ferrosilicon es tsis txhob ferromanganese, uas muaj tsis yog li ntawd siab ib melting point. Nyob rau hauv lub tiav lawm daim ntawv ntawm nyob tus yeees ntawm xws li ib tug sib tov muaj:

• tooj liab oxide - 70%;
• tooj liab hmoov - 12%;
• txhuas - 10%;
• ferrosilicon (los yog Ferro) - 8%.

No thaum lawv tseem hais pab txoj kev zoo thiab kev cia siab ntawm lub vuam ua hauj lwm los ntawm nce lub ntim uas tau faib rau thermal zog nyob rau hauv tus txheej txheem ntawm qhuav.

thermite mem hluav

Los ntawm kub qhia xaum xim muaj pes tsawg leeg yuav rov qab ua tej yam hauv daim ntawv qhia sib tov, tab sis nws cov ntsiab feature yog lub cylindrical zoo, nyob rau hauv lub txhaws yog active: qaum combustion thiab cov Cheebtsam. Nws yog muab tso rau hauv lub crucible zoo, ua los ntawm tshav kub-resistant graphite. Qaum xaus tso tawm nyob rau hauv ib tug tshwj xeeb qhib ntawm lub hau, txuas ib feem ntawm lub thermite sib tov lub tog raj kheej thiab tiv cav tseb txhais tau tias nyob rau hauv daim ntawv ntawm qhov yuam kev.

Lub combustion txheej txheem ntawm cov vuam caij thermal kom yuav tshwm sim sib tov nias rau hauv tus xaum. Yog li termosmesi burnup ua rau lub fact tias cov rhuab hlau raj nrog sau oplavitsya nto thiab ntaub ntawv ib tug muaj zog daim ntawv cog lus. Qhov zoo xws li kub qhia xaum xim ob lub ntsiab lus. Firstly, muaj yog tsis muaj yuav tsum tau npaj ib tug tshwj xeeb nyob qhov twg yuam kev. Ob, txoj kev ua rau sib tov nws tus kheej nyob rau hauv lub tiav lawm proportions muab tsis nws cia thiab tsheb thauj mus los.

Tus kab npaug tus kheej ob txhais tes

nyob rau hauv tsev rau manufacturing yooj yim thermite formulations yuav tsum tau ob tug cov khoom xyaw - steel slag thiab lub txhuas hlau. Lawv yuav tsum coj nyob rau hauv pyrophoric (auv) daim ntawv - nyob rau hauv lub xeev no rau yam khoom uas zoo li ib tug zoo hmoov av. Nyob ntawm seb, nyob rau hauv dab tsi muaj nqi yuav tau txais thermite nrog lawv txhais tes, thiab npaj tshwj xeeb tais diav - ib tug txog ntsha ua los ntawm txhuas yuav siv tau tom qab tag nrho cov kev npaj ua hauj lwm los yog hlau.

Los ntawm hnyav proportions ntawm cov khoom xyaw yog raws li nram no: 4 qhov chaw ntawm txhuas mus rau lub koob thib 3 teev fractions. Lub Cheebtsam yog kom huv si tov. Tom ntej no yuav tsis muaj kev tsim txom nyob rau hauv muab ib tug sib tov ntawm magnesium (umber permanganic acid), uas yuav ua tau cov nuj nqi ntawm ib lub hauv paus. Nws muaj peev xwm ntxiv mus rau lub nqi tsis ntau tshaj 20% ntawm tag nrho cov luj ntawm hlau sib txuas. Lub formulation no ces do dua.

Raws li koj tau pom, cov lus teb rau lo lus nug ntawm yuav ua li cas yuav ua rau thermite, yog yooj yim heev. Tab sis nws yog ib qho tseem ceeb los mus muab rau thiab tus qauv ntawm nws daim ntawv thov. Qhov kawg muaj pes tsawg leeg yuav muab tso nyob rau hauv ib tug txog ntsha. Cov sib tov yog meej nyob rau ntawd lub compact yog compacted thiab yog khi rau cais dej. Tom qab no yuav tsum tau ua oblong qhov rau magnesium daim kab xev uas nkag mus rau rau hauv lub khob rau ib ob peb centimeters. Mus qhib muaj pes tsawg leeg yog txaus los mus zes rau daim kab xev match.

Daim ntawv qhia nrum tus kab npaug

Qhov no yog ib tug ntawm cov yooj yim tshaj plaws nyob rau hauv qhov kev npaj ntawm ntau. Nws yuav manufactured thiab tsim mus rau hauv tej thawv. Yuav kom ib tug sib tov ntawm txawv nrum koom yam tsawg kawg nkaus faib, tab sis es tsis txhob tso zis rau tseem slag ntev mas ya raws. Cam khwb cia thermite lawv txhais tes yog ua los ntawm cov nram qab no Cheebtsam: hlau oxide (feem 3), gypsum (2 qhov chaw), txhuas hmoov nyob rau hauv ib tug sib tov ntawm ntxhib thiab zoo hlau. Tag nrho cov Cheebtsam yog tov, thiab ces dej yog ntxiv mus soften lub plaster. Cov uas ua loj yog molded, thiab nyob rau hauv daim ntawv no nws yog tsim nyog los tawm ib nrab ib teev. Cov sib tov twb dua lawm ua tus sau nrog dej thiab khaws cia rau kom qhuav rau ib lub lim tiam. Thaum uas lub sij hawm kis tau, dua li nyob rau hauv lub hnub ib zaug dua qhuav li, thiab ces tho ib lub qhov rau activating xwb.