2024 Tus sau: Beatrice Philips | [email protected]. Kawg hloov kho: 2024-01-18 12:13
Cov txiv ntseej tuaj yeem pom nyob hauv ntau qhov chaw, los ntawm cov menyuam tsim qauv mus rau cov txheej txheem nyuaj tshaj plaws. Lawv tuaj yeem muaj ntau hom ntawv, tab sis txhua tus ua raws tib txoj cai. Hauv kab lus no, peb yuav hais txog qee qhov nuances ntawm lawv cov khoom lag luam thiab daim ntawv lo.
Cov chav kawm twg muaj?
Cov chav kawm muaj zog rau cov txiv ntoo tau pom zoo hauv GOST 1759.5-87, uas tam sim no tsis cuam tshuam. Tab sis nws cov lus sib piv yog tus txheej txheem thoob ntiaj teb ISO 898-2-80, nws nyob ntawm nws uas cov tuam txhab thoob plaws ntiaj teb tau coj. Cov ntaub ntawv no siv rau txhua qhov ntsuas qhov tshwj tsis yog cov ntsia hlau:
- nrog cov yam ntxwv tshwj xeeb (ua haujlwm hauv qhov kub txias - 50 thiab +300 degrees Celsius, nrog kev tiv thaiv siab rau cov txheej txheem xeb);
- ntsuas tus kheej thiab xauv hom.
Raws li tus txheej txheem no, txiv ntoo tau muab faib ua ob pawg
- Nrog txoj kab uas hla 0.5 txog 0.8 hli. Cov khoom lag luam no hu ua "qis" thiab ua haujlwm hauv qhov chaw uas tsis xav tau lub siab. Yeej, lawv tiv thaiv tiv thaiv xoob cov txiv ntoo uas muaj qhov siab ntau dua 0.8 txoj kab uas hla. Yog li ntawd, lawv tau tsim los ntawm cov qib qis-qib hlau. Txog cov khoom lag luam, tsuas muaj ob chav kawm muaj zog (04 thiab 05), thiab lawv tau xaiv los ntawm ob tus lej. Qhov twg thawj zaug hais tias cov khoom no tsis tuav lub zog thauj khoom, thiab qhov thib ob qhia txog ib puas ntawm kev siv zog uas cov xov tuaj yeem tawg.
- Nrog txoj kab uas hla ntawm 0, 8 thiab ntau dua. Lawv tuaj yeem yog qhov siab ib txwm, siab thiab tshwj xeeb tshaj yog siab (feem Н≈0, 8d; 1, 2d thiab 1, 5d). Fasteners saum 0.8 txoj kab uas hla tau xaiv los ntawm ib tus lej, uas qhia txog qib siab tshaj plaws ntawm kev ntseeg tau ntawm cov ntsia liaj qhov rooj uas cov txiv ntoo tuaj yeem txuas nrog. Nyob rau hauv tag nrho, muaj xya chav kawm muaj zog rau cov txiv ntoo ntawm pab pawg siab - qhov no yog 4; tsib; 6; yim; cuaj; 10 thiab 12.
Cov ntaub ntawv teev tseg qhia txog cov cai rau xaiv cov txiv ntseej txhawm rau txhawm rau txhawm rau txhawm rau ntsuas qib. Piv txwv li, nrog chav kawm 5 txiv ntoo, nws raug nquahu kom siv ntu ntu qis dua lossis sib npaug rau M16 (4.6; 3.6; 4.8), tsawg dua lossis sib npaug rau M48 (5.8 thiab 5.6). Tab sis hauv kev coj ua, nws raug qhia kom hloov cov khoom lag luam nrog qib qis ntawm lub zog nrog qib siab dua.
Cov cim thiab cov cim
Txhua lub txiv ntoo muaj cov npe siv, nws qhia cov kws tshaj lij cov ntaub ntawv yooj yim txog cov khoom. Tsis tas li, lawv tau cim nrog cov ntaub ntawv hais txog qhov ntsuas thiab cov khoom ntawm kho vajtse.
Lub cim tau muab faib ua peb hom:
- puv - txhua qhov ntsuas tau qhia;
- luv luv - tsis muaj cov yam ntxwv tseem ceeb tau piav qhia;
- yooj yim dua - tsuas yog cov ntaub ntawv tseem ceeb tshaj plaws.
Lub npe suav nrog cov ntaub ntawv hauv qab no:
- hom khawm ris;
- qhov tseeb thiab qib zog;
- saib;
- kauj ruam;
- xov taub;
- txheej tuab;
- kev teev cov txheej txheem raws li qhov khoom tau tsim.
Ib qho ntxiv, cov txiv ntoo tau cim los pab txheeb xyuas tus khawm ris. Nws tau siv rau lub ntsej muag kawg thiab, qee zaum, rau sab. Nws muaj cov ntaub ntawv hais txog chav kawm muaj zog thiab cov cim khoom lag luam.
Cov txiv ntseej nrog txoj kab uas hla tsawg dua 6 hli lossis nrog qib kev nyab xeeb qis tshaj (4) tsis tau cim.
Cov ntawv sau tau thov los ntawm txoj kev nkag mus tob rau saum npoo nrog lub tshuab tshwj xeeb tsis siv neeg . Cov ntaub ntawv hais txog cov chaw tsim khoom tau qhia hauv txhua kis, txawm tias tsis muaj chav kawm muaj zog. Ua tiav cov ntaub ntawv tuaj yeem tau los ntawm kev tshuaj xyuas cov peev txheej. Piv txwv, cov ntaub ntawv rau cov txiv ntoo muaj zog tuaj yeem nrhiav tau hauv GOST R 52645-2006. Los yog hauv GOST 5927-70 rau cov neeg ib txwm muaj.
Kev tsim khoom siv tshuab
Hauv lub ntiaj teb niaj hnub no, ntau lub thev naus laus zis tau siv nrog kev pab ntawm cov txiv ntoo uas tau tsim. Qee qhov ntawm lawv tau siv los tsim cov khoom ntim loj nrog qhov tsawg kawg ntawm seem thiab cov khoom siv tau zoo . Cov txheej txheem yuav siv qhov chaw yam tsis muaj kev koom nrog tib neeg, hauv hom tsis siv neeg. Txoj hauv kev tseem ceeb rau kev tsim cov txiv ntoo hauv qhov ntau yog txias thim thiab kub forging.
Txias txias
Nws yog qhov thev naus laus zis thev naus laus zis zoo uas tso cai tsim cov fasteners hauv qhov ntau nrog qhov poob me me tsis pub ntau dua 7% ntawm tag nrho cov khoom lag luam. Cov tshuab siv tshuab tshwj xeeb tso cai rau koj kom tau txais txog 400 yam khoom hauv ib feeb.
Cov theem ntawm kev tsim cov hlua txuas siv cov thev naus laus zis txias
- Cov tuav tau npaj los ntawm hom hlau uas xav tau . Ua ntej ua, lawv tau ntxuav ntawm xeb lossis tso nyiaj txawv teb chaws. Tom qab ntawd phosphates thiab cov kua nplaum tshwj xeeb tau thov rau lawv.
- Slicing . Cov nplaim hlau tau muab tso rau hauv cov txheej txheem tshwj xeeb thiab txiav ua tej daim.
- Qhov seem ntawm cov txiv ntoo raug txiav tawm nrog cov txav txav txav tau .
- Stamping . Tom qab txhua qhov kev hloov pauv yav dhau los, qhov khoob raug xa mus rau lub tshuab stamping hydraulic, qhov uas lawv zoo li tus thiab lub qhov yog xuas nrig ntaus.
- Theem kawg . Txiav xov hauv qhov. Qhov haujlwm no yog ua tiav ntawm lub tshuab txiav txiv ntoo tshwj xeeb.
Tom qab ua tiav txoj haujlwm, qee cov txiv ntoo los ntawm pawg yuav tsum tau tshuaj xyuas kom ua raws li cov kev ntsuas ua ntej. Cov no yog qhov ntev, xov thiab qhov siab tshaj plaws uas cov khoom tuaj yeem tiv taus. Rau kev tsim khoom kho vajtse siv cov thev naus laus zis no, siv qee yam hlau, npaj rau kev thim nyiaj txias.
Kub forging
Tshuab txiv ntseej kub kuj tseem muaj ntau heev. Cov khoom siv raw rau kev tsim khoom kho vajtse hauv txoj hauv kev no tseem yog cov pas hlau, txiav rau hauv daim ntawm qhov xav tau ntev.
Cov theem tseem ceeb ntawm kev tsim khoom yog raws li hauv qab no
- Kub . Cov pas uas tau ntxuav thiab npaj tau muab rhaub kom kub txog 1200 degrees Celsius kom lawv dhau los ua yas.
- Stamping . Ib qho tshwj xeeb hydraulic xovxwm daim ntawv hexagonal blanks thiab punches lub qhov hauv lawv.
- Xov txiav . Cov khoom tau txias, cov xov tau siv sab hauv lub qhov. Rau qhov no, cov pas nrig tig zoo li cov kais dej tau siv. Txhawm rau pab cov txheej txheem thiab tiv thaiv kev hnav nrawm thaum txiav, cov tshuab roj tau muab rau cov khoom.
- Hardening . Yog tias cov khoom xav tau lub zog ntxiv, lawv tau tawv. Txhawm rau ua qhov no, lawv tau rov ua kom sov dua li qhov kub ntawm 870 degrees Celsius, ua kom txias ntawm kev kub ceev thiab raus rau hauv roj li 5 feeb. Cov kev ua no ua rau cov hlau ua kom tawv tawv, tab sis nws ua nkig. Txhawm rau tshem tawm qhov tsis muaj zog, thaum tswj lub zog, kho vajtse raug khaws cia hauv qhov cub li ib teev ntawm qhov kub (800-870 degrees).
Tom qab ua tiav tag nrho cov txheej txheem, cov txiv ntoo raug tshuaj xyuas ntawm lub rooj tshwj xeeb kom ua raws li lub zog xav tau. Tom qab kuaj xyuas, yog tias kho vajtse dhau nws, lawv tau ntim thiab xa mus rau lub tsev rau khoom . Cov chaw tsim khoom tseem muaj cov cuab yeej siv qub uas xav tau kev kho thiab kho ua haujlwm. Rau kev tsim cov fasteners rau cov cuab yeej zoo li no, tig thiab milling tshuab tau siv. Txawm li cas los xij, cov haujlwm zoo li no tau tsim los ntawm kev tsim khoom qis heev, kev siv cov ntaub ntawv ntau heev. Tab sis lawv xav tau hauv txhua qhov xwm txheej, thiab yog li ntawd, rau cov khoom me me ntawm cov khawm nrawm, cov thev naus laus zis no tseem muaj feem cuam tshuam.
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