1. Cov tawv nqaij sib txawv thiab xim, qhov chaw vuam
Ua rau 1: Cov khoom siv ntawm qhov chaw vuam sib txawv ntawm cov khoom qub.
Cov kev ntsuas sib xws: Siv cov vuam hlau uas zoo ib yam nrog cov khoom siv hauv paus, nyiam dua tshwj xeeb vuam hlau siv hauv steel mills; thib ob, pom cov khoom siv los ntawm cov khoom siv hauv paus; los yog siv universal vuam hlau.
Ua rau 2: Kev kho cua sov ntawm qhov chaw vuam sib txawv ntawm qhov chaw qub, thiab cov qauv hloov pauv.
Cov kev ntsuas sib xws: Tempering kev kho mob yog nqa tawm tom qab vuam los ua kom cov qauv nplej zoo ib yam; cov khoom tseem ceeb yog nruj me ntsis raws li steel cog cov txheej txheem vuam.
2. Kev tawg thiab deformation
Ua rau: Thaum cov khoom raug rau argon arc vuam, lawv nyob hauv zos overheated, ua rau muaj qhov sib txawv ntawm qhov sib txawv ntawm cov khoom thiab ua rau muaj kev ntxhov siab thermal; Tom qab vuam, thaj chaw uas nyob ib sab ntawm qhov chaw vuam tau dhau los ua quenching, thiab thaj chaw no nyuaj heev thiab nquag tawg.
Nco tseg:
1. Qhov loj dua qhov chaw vuam, qhov ntau dua qhov kev ntxhov siab sab hauv tsim.
2 Qhov siab dua cov pa roj carbon thiab alloying cov ntsiab lus, qhov phem dua qhov weldability. Yog tias nws tshaj 0.4%, preheating thiab tom qab cua sov yuav tsum tau.
3. Qhov siab dua qhov hardness ntawm ib feem, qhov ntau dua nws qhov kev ntxhov siab sab hauv thiab qhov yooj yim dua nws yog tawg.
4. Lub ntsej muag zoo nkauj, qhov yooj yim dua rau qhov tawg.
Cov kev ntsuas sib xws: Preheat tag nrho thiab ua tempering tom qab vuam.
Nco tseg:
Rau cov ntxig loj, txhawm rau kom tsis txhob muaj kev ntxhov siab los ntawm preheating (txawm tias tag nrho ib feem yog preheated, qhov kub ntawm qhov yog los ntawm sab nraud mus rau sab hauv, uas tseem tuaj yeem ua rau muaj kev ntxhov siab sab hauv), thaum preheating, ua kom sov ntawm qhov nruab nrab kub ib ntus ua ntej cua sov dua.
3. Xuab zeb qhov thiab qhov pores
Qhov laj thawj 1: Welder technical teeb meem, qhov khoob ntawm qhov sib txuas ntawm qhov sib txuas.
Cov kev ntsuas sib xws: Siv cov hlua vuam kom ntau li ntau tau; Ceev faj thiab ceev faj thaum vuam.
Ua rau 2: Thaum nitrided qhov chaw yog welded, nitrogen molecules vaporize thiab tsim pores vim cua sov.
Cov kev ntsuas sib xws: vuam ua ntej nitriding; Sib tov cov txheej nitride.
Qhov laj thawj 3: Muaj cov impurities ntawm qhov chaw vuam thiab cov pas nrig vuam tsis qhuav raws li qhov yuav tsum tau ua, ua rau cov roj tsim thaum lub sij hawm melting.
Cov kev ntsuas sib xws: Ua ntej vuam, cov roj, txheej, ua cov roj nplua nyeem thiab oxide zaj duab xis ntawm qhov chaw vuam yuav tsum raug tshem tawm; cov welding rods yuav tsum tau qhuav raws li xav tau.
4. Hardness txo thiab hauv zos annealing
Ua rau: Qhov kev hloov ntawm qhov kub thiab txias thaum lub sij hawm vuam ua rau kev kho cua sov ntawm cov khoom, uas ua rau muaj kev hloov pauv ntawm cov khoom ntawm cov khoom.
Kev ntsuas sib xws: Ua raws li cov txheej txheem vuam muab los ntawm tus neeg xa khoom steel.
5. Lwm cov lus qhia
Kev paub yooj yim ntawm kev kho cua sov steel: 1. Thaum cov hlau raug kev kho cua sov xws li nitriding lossis tag nrho cov preheating vuam, yuav tsum ceev faj kom tsis txhob kub siab tshaj qhov kub ntawm cov hlau ua ntej tawm hauv lub Hoobkas, txwv tsis pub lub hardness ntawm cov hlau yuav raug txo thiab deformation ntawm cov khoom yuav tshwm sim.
P20 zuag qhia tag nrho preheating pom zoo cov txheej txheem kev kho cua sov: preheat rau 350-450 degrees thiab tom qab ntawd weld, temper ntawm ib ncig ntawm 550 degrees (rau vuam ntawm cov pwm tseem ceeb, cov txheej txheem kho cua sov yuav tsum tau tswj nruj me ntsis raws li cov neeg tsim khoom pom zoo).
Txhawm rau tiv thaiv cov xuab zeb rov qab thaum lub sijhawm polishing tom qab vuam, lub vuam tsis zoo tuaj yeem siv los kuaj xyuas thawj zaug tom qab vuam. Cov chaw muaj teeb meem tuaj yeem raug khawb thiab tom qab ntawd welded kom tsis txhob rov qab xuab zeb qhov.
Vuam ntawm beryllium tooj liab: Beryllium tooj liab yog tshwj xeeb tshaj yog raug rau oxidation. Nws yuav tsum tau welded tam sim ntawd tom qab cov oxide zaj duab xis raug tshem tawm nrog ib tug ntse txhuam los yog sandblasting. Lub hardness ntawm qhov chaw welded thiab nws cov cheeb tsam ib puag ncig yuav txo qis. Yog hais tias qhov hardness txo yog tsis txaus, yuav tsum tau re-kub kho.
Post lub sij hawm: Jun-08-2025
