Kev sib raug zoo ntawm Alloy Steel Forging txheej txheem thiab Hardness

Alloy steel forging txheej txheem cuam tshuam qhov hardness ntawm cov khoom kawg, yog ib qho tseem ceeb hauv kev txiav txim siab kev ua tau zoo thiab kav ntev ntawm cov khoom. Alloy steels, tsim los ntawm hlau thiab lwm yam khoom xws li chromium, molybdenum, los yog npib tsib xee, nthuav tawm cov khoom siv kho kom zoo dua qub piv rau cov hlau. Cov txheej txheem forging, nrog rau kev deformation ntawm cov hlau siv compressive zog, plays lub luag haujlwm tseem ceeb hauv kev kho cov khoom no, tshwj xeeb tshaj yog hardness.

Forging Techniques thiab lawv cuam tshuam rau Hardness

1. Kub Forging: Cov txheej txheem no suav nrog cov cua sov ntawm cov hlau hlau kom kub siab tshaj nws qhov chaw recrystallization, feem ntau ntawm 1,100 ° C thiab 1,200 ° C. Qhov kub siab txo cov hlau viscosity, tso cai rau kom yooj yim deformation. Kub forging txhawb nqa cov qauv ua kom zoo dua qub, txhim kho cov hlau cov khoom siv kho tshuab, suav nrog hardness. Txawm li cas los xij, qhov kawg hardness nyob ntawm tus nqi txias tom qab thiab kev kho cua sov siv. Kev ua kom txias nrawm tuaj yeem ua rau muaj zog ntxiv vim qhov tsim ntawm martensite, thaum lub sijhawm txias qeeb yuav ua rau cov khoom tsis muaj zog, tsis tshua muaj zog.

2. Txias Forging: Nyob rau hauv sib piv rau kub forging, txias forging yog ua nyob rau hauv los yog ze ntawm chav tsev kub. Cov txheej txheem no nce lub zog thiab hardness ntawm cov khoom los ntawm strain hardening los yog ua hauj lwm hardening. Txias forging yog qhov zoo rau kev tsim cov qhov ntev thiab qhov chaw siab, tab sis nws raug txwv los ntawm cov hlau ductility ntawm qhov kub thiab txias. Lub hardness tiav los ntawm txias forging yog cuam tshuam los ntawm cov degree ntawm strain thov thiab cov alloy muaj pes tsawg leeg. Kev kho cua sov tom qab forging feem ntau tsim nyog kom ua tiav qhov xav tau hardness qib thiab txo cov kev ntxhov siab seem.

3. Isothermal Forging: Cov txheej txheem qib siab no suav nrog kev sib tsoo ntawm qhov kub thiab txias uas tseem nyob tas li thoob plaws hauv cov txheej txheem, feem ntau nyob ze ntawm qhov kawg ntawm cov hlau ua haujlwm kub. Isothermal forging txo qhov kub thiab txias gradients thiab pab kom ua tiav cov qauv microstructure, uas tuaj yeem txhim kho hardness thiab tag nrho cov khoom siv ntawm cov hlau alloy. Cov txheej txheem no tshwj xeeb tshaj yog muaj txiaj ntsig zoo rau cov ntawv thov kev ua haujlwm siab uas xav tau cov hardness meej meej.

Kev kho cua sov thiab nws lub luag haujlwm

Txoj kev forging ib leeg tsis txiav txim siab qhov kawg hardness ntawm alloy steel. Kev kho cua sov, suav nrog annealing, quenching, thiab tempering, yog qhov tseem ceeb hauv kev ua tiav cov qib hardness tshwj xeeb. Piv txwv li:

- Annealing: Qhov kev kho cua sov no suav nrog cua sov cov hlau mus rau qhov kub thiab txias thiab maj mam txias. Annealing txo hardness tab sis txhim kho ductility thiab toughness.

- quenching: ceev cua txias los ntawm qhov kub siab, feem ntau hauv dej los yog roj, hloov cov hlau lub microstructure mus rau martensite, uas ua rau muaj zog hardness.

- Tempering: Tom qab quenching, tempering yuav reheating cov hlau mus rau qhov kub thiab txias los kho cov hardness thiab txo cov kev ntxhov siab sab hauv. Cov txheej txheem no sib npaug hardness thiab toughness.

Xaus

Kev sib raug zoo ntawm alloy steel forging txheej txheem thiab hardness yog intricate thiab multifaceted. Kub forging, txias forging, thiab isothermal forging txhua qhov cuam tshuam rau hardness txawv, thiab qhov kawg hardness kuj cuam tshuam los ntawm kev kho cua sov tom ntej. Kev nkag siab txog cov kev sib cuam tshuam no tso cai rau cov kws tshaj lij los txhim kho cov txheej txheem forging kom ua tiav qhov xav tau hardness thiab tag nrho kev ua tau zoo ntawm cov hlau alloy hlau. Kev tsim kho kom zoo forging thiab cov tswv yim kho cua sov kom ntseeg tau tias cov khoom siv hlau alloy ua tau raws li qhov xav tau ntawm ntau yam kev siv, los ntawm cov khoom siv tsheb mus rau qhov chaw aerospace.