Shandong Weichuan Hlau Khoom Co., Ltd.

Automobile precision ci raj Hoobkas

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Vim tias tsis muaj oxide txheej ntawm cov phab ntsa sab hauv thiab sab nrauv ntawm cov yeeb nkab yeeb nkab, tsis muaj qhov xau nyob rau hauv kev kub siab, siab precision, siab tiav, tsis deformation nyob rau hauv txias dabtsi yog khoov, flaring, flattening thiab tsis tawg, nws yog tsuas yog siv los tsim cov khoom. ntawm pneumatic los yog hydraulic Cheebtsam, xws li cua lub tog raj kheej los yog roj lub tog raj kheej, uas yuav ua tau seamless yeeb nkab los yog welded yeeb nkab.


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Precision ci raj yog ib hom high-precision steel tube khoom tom qab kos duab zoo los yog txias dov. Vim tias tsis muaj oxide txheej ntawm cov phab ntsa sab hauv thiab sab nrauv ntawm cov yeeb nkab yeeb nkab, tsis muaj qhov xau nyob rau hauv kev kub siab, siab precision, siab tiav, tsis deformation nyob rau hauv txias dabtsi yog khoov, flaring, flattening thiab tsis tawg, nws yog tsuas yog siv los tsim cov khoom. ntawm pneumatic los yog hydraulic Cheebtsam, xws li cua lub tog raj kheej los yog roj lub tog raj kheej, uas yuav ua tau seamless yeeb nkab los yog welded yeeb nkab. Cov tshuaj muaj pes tsawg leeg ntawm precision ci raj muaj xws li carbon C, silicon Si, manganese Mn, sulfur s, phosphorus P thiab chromium CR. Cov pa roj carbon zoo, ua tiav dov, tsis muaj oxidizing ci kev kho cua sov (NBK lub xeev), kev kuaj tsis muaj kev puas tsuaj, txhuam thiab kev kub siab ntxuav ntawm cov yeeb nkab hauv phab ntsa nrog cov cuab yeej tshwj xeeb, kev kho tshuaj tiv thaiv nrog cov roj antirust ntawm cov yeeb nkab steel, thiab kev kho plua plav nrog npog ntawm ob qhov kawg. Cov phab ntsa sab hauv thiab sab nrauv ntawm cov yeeb nkab steel yog cov siab precision thiab siab tiav. Tom qab kev kho cua sov, cov yeeb nkab steel tsis muaj oxide txheej thiab siab huv ntawm phab ntsa sab hauv. Cov yeeb nkab steel bears siab siab, tsis deform thaum lub caij txias khoov, thiab tsis muaj kab nrib pleb thaum flaring thiab flattening. Lub precision steel yeeb nkab tuaj yeem ua tiav rau ntau yam kev deformation thiab machining. Hlau yeeb nkab xim: dawb nrog ci, nrog siab metallic luster. Tsheb thiab cov khoom siv kho tshuab muaj cov kev xav tau siab rau qhov raug thiab ua tiav ntawm cov kav hlau steel. Precision steel yeeb nkab cov neeg siv tsis yog tsuas yog cov neeg siv nrog kev xav tau siab rau precision thiab tiav. Vim hais tias cov yeeb nkab ci ntsa iab muaj qhov ua tau zoo thiab kev ua siab ntev tuaj yeem tswj tau ntawm 2-8 xov hlau, ntau cov neeg siv machining tau maj mam hloov cov yeeb nkab steel hlau los yog cov hlau puag ncig rau hauv cov yeeb nkab zoo meej kom txuag tau zog, khoom siv thiab lub sij hawm poob.

Cov qauv martensite tau txais los ntawm quenching ntawm precision ci raj thiab tempered nyob rau hauv qhov kub ntawm 450 ~ 600 ℃; Los yog tom qab tempering ntawm 650 ℃, dhau los ntawm 350 ~ 600 ℃ ntawm qhov txias txias; Los yog tom qab tempering ntawm 650 ℃ thiab cua sov rau ib lub sij hawm ntev nyob rau hauv qhov kub ntawm 350 ~ 650 ℃, lub precision ci raj yuav tsim embrittlement. Yog hais tias lub embrittled 20 # precision steel raj yog reheated rau 650 ℃ thiab ces txias sai sai, lub toughness yuav rov qab. Yog li ntawd, nws tseem hu ua %26ldquo; Reversible temper brittleness%26rdquo; Lub brittleness ntawm kub tempering qhia qhov nce ntawm toughness brittleness transformation kub ntawm precision ci raj. Kub kub tempering brittleness. Qhov rhiab heev yog feem ntau txiav txim siab los ntawm qhov sib txawv ntawm qhov sib txawv ntawm qhov kub thiab txias ntawm qhov hloov pauv hauv lub xeev toughened thiab lub xeev brittle (% 26delta; T) los qhia. Qhov hnyav dua qhov brittleness ntawm qhov kub thiab txias tempering, qhov ntau dua qhov kev faib ua feem ntawm intergranular puas ntawm qhov tawg ntawm precision ci raj.

Cov teebmeem ntawm cov ntsiab lus ntawm qhov kub siab tempering brittleness hauv precision ci raj yog muab faib ua: (1) impurity ntsiab ua rau kub tempering brittleness ntawm precision ci raj, xws li phosphorus, tin, antimony, thiab lwm yam (2) Alloy ntsiab lus uas txhawb los yog qeeb. down lub brittleness ntawm kub tempering nyob rau hauv ntau hom thiab degrees. Chromium, manganese, nickel thiab silicon ua lub luag haujlwm txhawb nqa, thaum molybdenum, tungsten thiab titanium ua lub luag haujlwm qeeb. Carbon kuj plays lub luag haujlwm catalytic. General carbon precision ci raj tsis nkig rau kub tempering. Cov binary lossis multicomponent alloy steel uas muaj chromium, manganese, npib tsib xee thiab silicon yog qhov rhiab heev, thiab nws qhov rhiab heev txawv raws li hom thiab cov ntsiab lus ntawm cov ntsiab lus alloy.

Qhov rhiab heev ntawm cov qauv qub ntawm tempered precision ci raj rau qhov kub siab tempering brittleness ntawm cov hlau yog qhov sib txawv. Martensite high-temperature tempering qauv yog rhiab heev rau high-temperature tempering brittleness, bainite high-temperature tempering qauv yog qhov thib ob, thiab pearlite qauv yog qhov tsawg tshaj plaws.

Qhov tseem ceeb ntawm qhov kub thiab txias tempering brittleness ntawm precision ci raj feem ntau suav hais tias yog qhov tshwm sim ntawm kev sib cais ntawm impurity ntsiab xws li phosphorus, tin, antimony thiab arsenic nyob rau hauv thawj austenite grain ciam teb, ua rau grain ciam teb embrittlement. Cov ntsiab lus alloy xws li manganese, npib tsib xee thiab chromium yog sib cais nrog cov impurity saum toj no ntawm cov ciam teb, uas txhawb nqa cov khoom ntawm impurity thiab intensifies embrittlement. Ntawm qhov tsis sib xws, molybdenum muaj kev sib cuam tshuam nrog phosphorus thiab lwm yam impurity, uas tuaj yeem tsim cov nag lossis daus hauv cov siv lead ua thiab cuam tshuam cov qoob loo ciam teb ntawm phosphorus, uas tuaj yeem txo qhov brittleness ntawm kub tempering. Cov ntsiab lus tsis tshua muaj hauv ntiaj teb kuj muaj cov txiaj ntsig zoo ib yam li molybdenum. Titanium tuaj yeem txhawb nqa nag lossis daus ntawm phosphorus thiab lwm yam impurity nyob rau hauv cov siv lead ua, yog li ua kom tsis muaj zog ntawm cov qoob loo ciam teb ntawm impurity ntsiab thiab ua rau lub siab kub ntawm lub brittleness.

Cov kev ntsuas los txo qhov kub siab tempering brittleness ntawm precision ci raj yog raws li nram no: (1) tom qab kub kub tempering, roj txias los yog dej ceev ceev txias yog siv los inhibit qhov segregation ntawm impurity ntsiab ntawm lub grain ciam (2) Thaum lub molybdenum cov ntsiab lus nyob rau hauv cov hlau nce mus rau 0.7%, embrittlement nyiam ntawm high-temperature tempering yog heev txo. Tshaj li qhov kev txwv no, 20 # precision steel raj tsim tshwj xeeb carbides nplua nuj nyob rau hauv molybdenum, cov ntsiab lus molybdenum hauv matrix txo, thiab embrittlement nyiam ntawm precision ci raj nce (3) Txo 20 # cov ntsiab lus ntawm impurity ntsiab hauv precision steel yeeb nkab (4 ) Nws yog ib qho nyuaj rau tiv thaiv embrittlement ntawm qhov chaw ua hauj lwm nyob rau hauv high-temperature tempering embrittlement cheeb tsam rau lub sij hawm ntev los ntawm kev ntxiv molybdenum ib leeg. Tsuas yog los ntawm kev txo 20 # impurity cov ntsiab lus nyob rau hauv precision steel yeeb nkab, kev txhim kho purity ntawm precision ci yeeb nkab, ntxiv los ntawm kev sib xyaw alloying ntawm txhuas thiab cov ntsiab lus tsis tshua muaj hauv ntiaj teb, tuaj yeem tiv thaiv kev kub ntxhov siab.


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