Qhov tseem ceeb ntawm precision khib kub kho rau cov yeeb nkab txiav tshuab

Qhov tseem ceeb ntawm precision khib kub kho rau cov yeeb nkab txiav tshuab

Tag nrho lub cev ntawm cov yeeb nkab txiav tshuab yog ua los ntawm cov hlau, yog li qee txoj haujlwm ntawm lub tshuab txiav tsis siv neeg yuav tsum tau annealed thaum lub sijhawm tsim khoom. Annealing ntawm hlau yog ib txoj kev kho cua sov uas ua kom cov hlau ua kom sov rau qhov kub thiab txias uas ua rau lossis hloov ib nrab, thiab maj mam txias nws los ntawm kev rwb thaiv tsev thiab rwb thaiv tsev. Yooj yim muab tso, annealing yog hais txog cua sov hlau rau ib qho kub thiab rwb thaiv tsev rau ib lub sij hawm, ces maj mam txias nws, uas yog hu ua annealing.

Lub hom phiaj ntawm annealing yog los daws cov teeb meem ntawm cov txheej txheem, txhim kho cov txheej txheem kom homogenize muaj pes tsawg leeg thiab ua kom zoo dua cov siv lead ua, txhim kho lub cev ntawm cov hlau, thiab txo cov kev ntxhov siab sab hauv; Nyob rau tib lub sijhawm, nws tuaj yeem txo lub zog, txhim kho cov yas deformation thiab ductility, thiab txhim kho nti ntau lawm thiab ua cov yam ntxwv. Yog li ntawd, annealing tsis yog tsuas yog kom zoo dua tshem tawm thiab txhim kho cov txheej txheem tsis xws luag thiab thermal stress tshuav los ntawm cov txheej txheem dhau los, tab sis kuj npaj ua ntej rau cov txheej txheem tom ntej. Yog li ntawd, annealing belongs rau cov khoom ua tiav cov khoom siv hluav taws xob ua kom sov, tseem hu ua kev kho cua sov ua ntej.

Vim tias cov tshuab plasma yog ib yam khoom siv thawj zaug, tsis tas yuav mus dhau ntau cov txheej txheem nyuaj ntws. Tsuas yog ib qho taw qhia tau lees paub, thiab cov khoom siv tsis ua haujlwm tsawg, uas tsis tuaj yeem ncua cov neeg siv khoom thiab txhim kho cov khoom tsim tau.

Kev kho cua sov saum npoo ntawm iav racks tuaj yeem muab faib ua pawg hauv qab no raws li kev siv tshuab.

1. Kev kho cua sov saum npoo yog txheej txheem ntawm cov cua kub ceev ntawm cov hlau nrum kom siab dua qhov kub ntawm Curie, tab sis ua ntej cov cua sov xa mus rau hauv cov tub ntxhais, nws yuav txias sai heev. Qhov no tso cai rau cov txheej txheej saum npoo kom quenched hauv cov qauv austenitic yam tsis muaj kev hloov pauv sab hauv, ua tiav lub hom phiaj ntawm qhov tawv tawv tsis muaj kev hloov pauv ntawm cov tub ntxhais. Haum rau cov pa roj carbon tsawg.

2. Organic chemical thermal kho yog hais txog cov txheej txheem kev kho cua sov uas cov molecules ntawm cov tshuaj molecule yog infiltrated rau hauv txheej txheej ntawm lub workpiece raws li lawv muaj peev xwm kis tau ntawm qhov kub thiab txias, thiaj li yuav hloov cov muaj pes tsawg leeg thiab cov qauv ntawm cov nto. txheej ntawm lub workpiece thiab ua tiav ib qho tshwj xeeb kev npaj thiab cov yam ntxwv ntawm txheej txheej ntawm hlau. Raws li ntau hom infiltrating cov ntsiab lus, kev kho cua sov ntawm cov organic tuaj yeem muab faib ua plaub txoj hauv kev: nitriding, high-frequency quenching, cyanide, thiab hlau infiltration material method.

High zaus quenching: tseem hu ua nitriding, yog tag nrho cov txheej txheem ntawm nitrogen atoms infiltrating saum npoo ntawm hlau. Nws qhov tseem ceeb yog txhawm rau txhim kho lub zog thiab hnav tsis kam ntawm txheej txheej, nrog rau kev txhim kho nws txoj kev qaug zog thiab kev tiv thaiv corrosion. Tam sim no, cov txheej txheem quenching siab yog siv hauv kev tsim khoom thiab kev tsim khoom.

Nitriding: Nitriding yog tag nrho cov txheej txheem ntawm instigating oxygen atoms nkag mus rau hauv txheej txheej hlau. Nws kuj tseem tso siab rau cov pa roj carbon steel workpieces nrog cov txheej txheej ntawm cov pa roj carbon nruab nrab, thiab los ntawm kev kho cua sov thiab kub kub quenching, txheej txheej ntawm lub workpiece muaj siab toughness thiab hnav tsis kam, thaum lub hauv paus tseem ceeb ntawm lub workpiece tseem tuav lub ductility thiab yas deformation ntawm high carbon steel.

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