A400 chav kawm fittings: yam ntxwv, daim ntawv thov

2024 Tus sau: Howard Calhoun | [email protected]. Kawg hloov kho: 2023-12-17 10:28

Kev xaiv dav ntawm ntau yam khoom siv hlau tso cai tsis tsuas yog txhawm rau txhim kho cov qauv mus rau qib uas xav tau, yog li tsim cov tsev txhim khu kev qha, tab sis kuj cuam tshuam rau cov txheej txheem ntawm kev txhim kho txhua yam khoom, ua kom nws nce ntau zaus.

Cov yam ntxwv tseem ceeb ntawm fittings

Nws tsim nyog pib cov npe ntawm cov yam ntxwv ntawm A400 chav kawm fittings nrog qhov tseeb tias nws tseem yog feem ntau hu ua los ntawm cov cim qub A3. Tig rau nws cov khoom, nws yog ib qho tseem ceeb kom paub qee qhov sib txawv yooj yim. Thawj ntawm cov no yog nws qhov chaw. Lub ribbed nto ntawm qhov kev txhawb nqa no cuam tshuam rau nws tus nqi, nce nws. Qhov no yog vim qhov tseeb tias nws yog qhov nyuaj dua los tsim corrugated reinforcement siv dov hlau dua du. Tab sis nws yuav tsum to taub tias adhesion rau pob zeb ntawm xws li cov khoom yog siab dua. Tsis tas li ntawd, vim nws qhov chaw, A400 chav kawm rebar tuaj yeem ua tiav ob qho tib si hauv kev tsim cov pob zeb ua kom muaj zog rau cov qab nthab thiab rau cov hauv paus hauv qhov chaw tsim kho.

Kev txiav txim siab thiab kab kab

A400 yog dab tsi ntawm fittings? Txhawm rau teb cov lus nug no, nws yuav txaus los txiav txim siab nwsnpe. Tsab ntawv A nyob rau hauv lub cim qhia tias cov khoom hlau yog kub dov los yog thermomechanically hardened rebar. Tus lej 400 qhia tias lub zog ntawm cov khoom no yog 400 N / mm 2.

Nws yog ib qho tseem ceeb kom nkag siab tias ib qho ntawm cov yam ntxwv tseem ceeb ntawm kev txhawb nqa yuav yog nws txoj kab uas hla. Lawm, qhov ntsuas no yuav txawv. GOST raws li tus naj npawb 5781-82 tsim kev tso tawm cov khoom nrog lub cheeb ntawm 6 mus rau 40 hli. Hauv kev tsim khoom, nws raug tso cai siv cov qib steel xws li 35GS thiab 25G2S. Yog tias nyob rau hauv kev tsim cov khoom siv ntxiv xws li cov khoom siv raw li 32G2Rps steel, ces txoj kab uas hla ntawm cov khoom kawg tuaj yeem yog 6 hli thiab tsis ntau tshaj 22 hli. Vim yog qhov loj ntawm cov khoom siv, nrog rau cov khoom kawg, uas yog, kev txhawb nqa, xaiv cov chav kawm tsim nyog rau kev tsim kho ntawm ib qho khoom yuav tsis yog qhov teeb meem loj. Cov chav kawm twg ntawm kev txhawb nqa A400 xaiv rau kev tsim kho ntawm cov khoom? Nws yog qhov zoo tshaj los tso siab rau cov lus pom zoo ntawm cov kws tshaj lij hauv qhov no.

Kev xaiv kab

Ntau tus neeg uas tsis paub txog cov hauv paus ntawm kev tsim kho thiab cov khoom siv tsis zoo yuav ua rau qis qis rau qee yam khoom. Thaum xaiv cov khoom no, txoj kab uas hla yog qhov taw qhia tseem ceeb tshaj plaws ntawm elasticity. Qhov siab dua tus lej ntawm tus yam ntxwv no, qhov ntau dua qhov kev txhawb nqa tuaj yeem tiv taus thiab rov qab mus rau nws daim ntawv qub ua ntej nws khoov lossis tawg.

Muaj lwm yam tseem ceeb uas feem ntau ntsib thaum yuav. Txoj kab uas hla ntawm A400 chav kawm rebar tsis sib haum rau qhov uas tau teev tseg hauv phau ntawv teev npe, piv txwv li. Ntawm no nws tseem ceeb heev kom paub tias yog tias koj ntsuas qhov ntsuas no nrog lub caliper nyob rau hauv qhov chaw ntawm tav, ces nws yuav ntau dua, thiab yog tias nyob rau hauv ib qho chaw du, ces tsawg dua. Txij li qhov saum npoo yog corrugated, nws tsis tuaj yeem muaj ib qho taw qhia raws li qhov ntev. Vim li no, tus lej tus yam ntxwv ntawm qhov ntsuas no yog txiav txim los ntawm tus lej lej. Tsis tas li ntawd, txawm tias nyob rau hauv lub xeev cov ntaub ntawv nws tau qhia tias corrugated reinforcement yuav muaj qhov sib txawv me ntsis ntawm txoj kab uas hla ntawm qhov tau tshaj tawm, tab sis nyob rau hauv cov xwm txheej tias qhov no tsis cuam tshuam rau lub peev xwm ntawm txhua txoj kev.

Txoj kab uas hla ntawm kev khaws cia thiab kev thauj mus los

Nws yog ib qho tseem ceeb kom nkag siab tias cov yam ntxwv ntawm cov pas nrig, lossis lawv txoj kab uas hla, yuav cuam tshuam rau txoj kev khaws thiab thauj khoom. Piv txwv li, corrugated reinforcement nrog ib txoj kab uas hla tsawg dua 12 hli tuaj yeem thauj tau los ntawm winding rau hauv coils. Txoj kev no muaj ntau yam zoo. Ua ntej, txoj kev thauj mus los nws tus kheej yog yooj yim, thiab nws kuj yooj yim dua los khaws nws. Thib ob, cia hauv coils tso cai rau koj kom tsis txhob muaj qhov tsis xws luag xws li khoov ntawm qhov cuab lub zog hauv txhua qhov chaw, uas yuav cuam tshuam rau lub zog ntawm cov khoom.

Class A400 rebar, uas muaj txoj kab uas hla loj dua, tuaj yeem thauj tau hauv daim ntawv uas nws yog, uas yog, hauv cov pas nrig. Qhov no yog qhov ua tau vim qhov tseeb tias nws twb nyuaj heev rau khoov lossis tsis khoov cov hlau tuab, thiab qhov tshwm sim ntawm qhov khoov me me tsis txaus ntshai.

Yuav ua li cas armature A400 lossis A3?

Tam sim no yuavfittings, ntau tus neeg tau ntsib nrog cov teeb meem xws li cov cim sib txawv. Feem ntau qhov teeb meem no tshwm sim nrog A400 thiab A3. Ntau tus neeg xav tias qhov txawv yog dab tsi yog tias cov khoom no muaj qhov zoo ib yam, tib txoj kev tsim khoom thiab cov khoom siv raw los ntawm lawv tau tsim, nrog rau cov yam ntxwv ntawm kev ua tau zoo. Nws yuav tsum raug sau tseg tias tus nqi ib tuj ntawm rebar yog tib yam. Lo lus teb rau lo lus nug no yooj yim heev. Nws yog tib yam armature. Qhov txawv tsuas yog tias lub npe A3 suav hais tias yog classic, tab sis hom A400 tau tshwm sim tsis ntev los no. Ntawm no peb tuaj yeem ntxiv tias S400 cim kuj pom. Qhov no yog tib yam ntawm cov khoom, lub Scope tau tseem zoo ib yam li txhua yam. Nws tsuas yog tias lub npe no yog ua raws li kev faib khoom sib txawv ntawm cov khoom.

xov xwm tshwj xeeb

Regular type A3 lossis A400 rebar yog siv hauv kev tsim vaj tsev ib txwm muaj. Txawm li cas los xij, muaj qee yam tshwj xeeb ntawm cov khoom siv uas tseem siv tau, tab sis ntau zaus tsawg dua.

• AT400. Qhov no subspecies ntawm ib tug hlau pas nrig yog characterized los ntawm lub fact tias nws undergoes tshav kub kev kho mob, thaum lub sij hawm cov kev hloov tshwm sim nrog crystalline qauv ntawm daim phiaj. Ua tsaug rau cov nyhuv no, nws muaj peev xwm ua tau kom muaj zog nce ntxiv hauv lub zog ntawm cov khoom yam tsis tau nce nws txoj kab uas hla.
• A400C. Hom no txawv ntawm qhov seem nyob rau hauv uas nws tuaj yeem welded ua ke. Feem ntau, qhov kev txhawb nqa yog txuas rau ib leeg siv ib lub xov hlau tshwj xeeb, yog tias tsim nyog los tsim qee hom thav duab lossis ib qho qauv. Yooj yim rods ntawmvuam yuav kub heev ntawm cov pob qij txha. Thiab lawv, raws li koj paub, yog thawj zaug muab slack nyob rau hauv ib qho tseem ceeb loads, txij li thaum lub siv lead ua lattice ntawm cov khoom, uas yog lub luag hauj lwm rau lub zog, puas thaum lub sij hawm vuam. A400C yog tsim nyob rau hauv xws li ib txoj kev uas nws tsis muaj xws li ib tug drawback, thiab nws muaj peev xwm txuas tau ob leeg nrog hlau thiab vuam.
• A400K. Tshwj xeeb corrosion-resistant fittings uas muaj ib tug tshwj xeeb daim ntawv thov profile. Feem ntau yog siv rau kev ua haujlwm xws li choj lub hauv paus, thiab lwm yam.

Impurities in composition

Nws yog ib qho tseem ceeb uas yuav tsum nco ntsoov tias qee tus yam ntxwv ntawm A400 fittings nrog 12 hli txoj kab uas hla los yog lwm yam nyob ntawm impurities. Nws yog ib qho tseem ceeb kom nkag siab txog ntawm no tias impurities muaj nyob rau hauv ob qho tib si nyob rau hauv cov khoom ntawm cov khoom tshwj xeeb ntawm fittings thiab nyob rau hauv ib tug dog dig sawv daws yuav. Cov khoom siv feem ntau yog carbon, silicon, manganese, chromium, tooj liab, aluminium, npib tsib xee, sulfur thiab phosphorus.

Tau kawg, feem ntau ntawm cov khoom ntxiv no, uas yog ib feem ntawm cov pas nrig, yog qhov tsawg heev. Yog hais tias peb tham txog tus naj npawb ntawm cov coefficients, ces lawv nyob rau hauv lub cheeb tsam ntawm pua pua, thiab ib co nyob rau hauv cheeb tsam ntawm txhiab ntawm ib feem pua. Cov ntsiab lus ntau ntawm cov impurities no yog tsim los ntawm GOST, thiab kev ua txhaum me ntsis ntawm cov khoom muaj nyob rau hauv cov ntaub ntawv yuav pom tam sim ntawd los ntawm qhov tsis zoo ntawm cov khoom tiav.

Profile sib txawv

Txuas ntxiv mus tham txog cov yam ntxwv ntawm kev txhawb nqa, nws yog ib qho tseem ceeb kom nco ntsoov tias lawv muaj qhov sib txawv. Hauv lwm lo lus, lawv muaj qhov profile sib txawvtav. Yuav ua crescent lossis nplhaib profile. Qhov no yog ib qho tseem ceeb heev, txij li qhov kev siv ntawm cov khoom kuj nyob ntawm nws. Lwm qhov nthuav parameter yog qhov hnyav ntawm A400 rebar. Nyob ntawm txoj kab uas hla, nws txawv ntawm 0.25 mus rau yuav luag 40 kg (hauv ib 'meter' ntawm reinforcing bar).

Lub nplhaib txhawb nqa profile feem ntau yog siv yog tias tsim nyog los tsim kom muaj cov qauv muaj zog uas yuav muaj ntau cov khoom ua vaj tse. Hom kab no nyob rau hauv cov khoom no muaj peev xwm muab kev ruaj ntseg adhesion ntawm hlau rau pob zeb, thiab kuj yog haum rau kev txhawb zog.

Cov kab mob zoo li tus kab mob feem ntau yog siv los ntawm cov kws kho mob tshwj xeeb yog tias nws yog ib qho tseem ceeb kom muab lub zog ntau dua rau cov khoom tiav ua ntej tawg. Nws yog ib qho tsim nyog ntxiv tias tsis ntev los no tau muaj cov khoom lag luam uas muaj kev sib xyaw ua ke ntawm qhov profile, uas yog qhov zoo hauv adhesion rau pob zeb, thiab tseem muab kev tiv thaiv kev ruaj ntseg tiv thaiv tearing.

Cov khoom tiav tiav

Tus nqi ntawm rebar ib tuj yog raws li cov khoom siv rau kev tsim khoom. Cov hlau tshwj xeeb yuav raug nqi ntau dua. Qhov pheej yig tshaj hom kev txhawb nqa yuav yog tus pas nrig nrog txoj kab uas hla ntawm 8 hli. Tus nqi rau ib tug yuav yog 40 rubles. Ib tuj yuav suav nrog txog 193 daim, uas txhais tau hais tias tus nqi yuav yog li 40,000 rubles.

Raws li tau hais ua ntej, qhov tsawg kawg nkaus txoj kab uas hla ntawm tus pas nrig yog 6 hli, thiab qhov siab tshaj plaws yog 40 hli. Cov khoom tiav tuaj yeem yog los ntawm 6 mus rau 12 qhov ntev. Nws tseem yog ib qho tseem ceeb uas yuav tau ntxiv tias muaj xws li ib tug parameter li curvature ntawm tus pas nrig. Qhov no parameter rau fittings A400 yog tso cai tsis pub tshaj 0.6% ntawmrod ntev. Nws tseem tsim nyog sau cia tias cov khoom tuab tsawg yog qhov txhab rau hauv lub cev, thaum cov tuab tuab tsuas yog khaws cia nyias thiab zoo li lub pas hlau ntev.