Cov kev cai ntawm kev tso cai muaj nyob thiab kho thaj tsam ntawm qhov tsis xws luag ntawm tooj liab alloy castings
A1 Rau qhov tsis xws luag ntawm castings uas tsis tau teev nyob rau hauv kev nthuav dav hauv cov duab kos, cov ntaub ntawv kev lag luam lossis cov ntawv cog lus, txawm tias lawv tuaj yeem kho lossis xa ncaj qha los ntawm lub Hoobkas tuaj yeem txiav txim siab raws li qhov tau teev tseg hauv cov cai no.
A2 Kev nkag mus tsis zoo xws li cov kab nrib pleb thiab kaw txias tsis tso cai rau saum npoo ntawm castings.
A3 Tsuav qhov zoo li qhov zoo thiab cov kev xav tau siv tsis cuam tshuam, qhov tsis xws luag hauv cov kab hauv qab no tau tso cai muaj nyob thiab tuaj yeem xa ncaj qha los ntawm lub Hoobkas.
A3.1 Txhua yam tsis xws luag uas tuaj yeem raug tshem tawm tom qab ua tiav tau tso cai rau saum npoo ntawm cov casting los ua machined.
A3.2 Oxidized inclusion defects ntawm qhov tsis-machined nto ntawm lub casting raug tso cai muaj nyob yog tias qhov tob tsis tshaj qhov qis tshaj ntawm cov phab ntsa thickness thiab qhov chaw tsis tshaj 10% ntawm qhov chaw.
A3.3 Rau qhov tsis xws luag, raws li kev ua haujlwm sib txawv ntawm ntau qhov chaw ntawm castings, nto ntawm castings muab faib ua plaub theem abcd. Cov qib yuav tsum tau qhia los ntawm tus neeg yuav khoom hauv cov duab kos lossis cov ntaub ntawv qhia. Yog tias cov tog neeg xav tau tsis qhia txog qib, tus neeg muag khoom tuaj yeem txiav txim siab qib raws li Table A, thiab txiav txim siab qhov kev tso cai ntawm qhov tsis xws luag ntawm txhua qib raws li Table A2 thiab Table A3 los txiav txim seb puas tso cai rau kev xa khoom. ncaj qha los ntawm lub Hoobkas. Cov chaw tsis siv tshuab tuaj yeem kho raws li Chav Kawm D. A3.3.1 Qhov tob ntawm ib lub qhov tsis xws luag yuav tsum raug raws li cov cai hauv qab no:
A3.3.1.1 Qhov tob ntawm ib lub qhov tso cai rau ntawm qhov chaw uas tsis yog tshuab yuav tsum tsis pub tshaj 25 hli.
A3.3.1.2 Qhov tob ntawm ib lub qhov tso cai kom muaj nyob rau ntawm qhov chaw ua tiav yuav tsum tsis txhob ntau tshaj 1.5 hli, thiab yuav tsum tsis pub tshaj 1/3 ntawm phab ntsa thickness ntawm qhov chaw: nws yuav tsum tsis pub tshaj 1/4 ntawm lub phab ntsa thickness ntawm lub installation ntug.
A3.3.2 Qhov tob ntawm pawg qhov tsis xws luag yuav tsum ua raws li cov cai hauv qab no.
A3.3.2.1 Qhov sib koom ua ke tsis raug tso cai rau ntawm Chav Kawm A.
A3.3.2.2 Qhov tob ntawm pawg qhov ntawm qhov chaw B yuav tsum tsis txhob siab tshaj 0 hli, thiab yuav tsum tsis pub tshaj 1/4 ntawm qhov tuab ntawm qhov chaw ntawd.
A3.3.2.3 Qhov tob ntawm pawg C ntawm qhov chaw yuav tsum tsis txhob siab tshaj 1.5 hli, thiab yuav tsum tsis pub tshaj 1/4 ntawm qhov tuab ntawm qhov chaw ntawd.
A3.3.2.4 Qhov tob ntawm pawg qhov nyob rau ntawm chav kawm D yuav tsum tsis txhob ntau tshaj 20 hli thiab yuav tsum tsis txhob ntau tshaj 1/3 ntawm thickness ntawm qhov chaw.
A3.4 Castings uas tau tso cai kom muaj qhov tsis xws luag ntawm ib lub qhov thiab pawg ntawm lub qhov yuav tsum tsis txhob muaj qhov tsis xws luag ntawm qhov sib luag ntawm qhov rov qab ntawm tib seem.
A4 casting nto tiav
A4.1 Qhov tsis xws luag ntawm castings tuaj yeem raug tshem tawm los ntawm kev sib tsoo, tab sis qhov ntev ntev tom qab kev sib tsoo yuav tsum ua raws li qhov yuav tsum tau ua.
A4.2 Tshwj tsis yog rau cov kev cai tshwj xeeb, yog tias muaj qhov tsis xws luag ntau tshaj li cov teev hauv Table A2, kev kho yuav raug tso cai. Qhov chaw kho, tus naj npawb ntawm kev kho, thiab kho qhov tob yuav tsum ua raws li cov lus qhia A4.
A4.3 Cov kev kho qhov tsis xws luag yuav tsum yog hauv av du yam tsis muaj kev cuam tshuam rau cov tsos thiab kev siv ib txwm. Yuav tsum tsis muaj kab nrib pleb ntawm qhov chaw ntawm qhov kho qhov casting.
A4.4 Tshwj tsis yog txwv tsis pub teev nyob rau hauv cov duab kos thiab kev pom zoo, cov txheej txheem kho tuaj yeem txiav txim siab los ntawm cov chaw tsim khoom. Cov chaw tsim khoom yuav tsum xyuas kom meej qhov zoo ntawm kev kho.
A4.5 Copper kua lossis tooj liab vuam rods ntawm cov khoom qub lossis cov khoom zoo sib xws yuav tsum tau siv los kho. Yog tias tus neeg yuav khoom pom zoo, vuam raug tso cai siv los kho.
A4.6 Casting defects nyob rau hauv cov xwm txheej hauv qab no tsis raug tso cai los kho:
ib. Lub siab-cov kabmob lossis cov khoom sib khi hauv kev sib cuag nrog cov khoom tawg, tawg lossis cov tshuaj lom heev;
b. Threaded qhov chaw uas muaj kev ntxhov siab tseem ceeb;
c. Cov khoom uas tsis raug tso cai kho raws li daim duab kos lossis kev pom zoo;
d. Lwm yam kev kho uas cuam tshuam rau qhov zoo ntawm qhov zoo lossis kev ua haujlwm.
Lus Cim: Qhov txoj kab uas hla thiab qhov tob ntawm qhov ntawm qhov tsis siv tshuab yuav tsum tsis txhob ntau tshaj 1.0mm, thiab lub qhov ntawm qhov chaw yuav tsum muaj txoj kab uas hla tsawg dua 0.5mm thiab qhov tob tsawg dua 1.mm.
Tsis suav tias yog qhov tsis xws luag.
Lus Cim: Qhov txoj kab uas hla thiab qhov tob ntawm qhov ntawm qhov tsis siv lub tshuab tsis ntau dua 1. hauv qhov tob.
Tsis suav tias yog qhov tsis xws luag.
Lus Cim: 1. Qhov chaw kho vuam yog hais txog thaj tsam tom qab nthuav dav. 2. Cov cheeb tsam uas muaj qhov chaw kho vuam tsawg dua 2cm² tsis suav nrog tus lej ntawm kev kho vuam.
