Phau ntawv qhia txog kev xaiv cov khoom siv rau cua sov-Resistant Steel Castings: German Standard vs. Suav Standard, Comprehensive Analysis from Composition to Working Conditions

Nyob rau hauv siab -kub muaj xwm txheej, qhov kev pab cuam lub neej, stability, thiab tus nqi-effectiveness ntawm tshav kub-resistant steel castings nyob ntawm seb cov khoom xaiv. Kev xaiv cov khoom tsim nyog tuaj yeem ua tiav "ib qho- sijhawm peev, ntev- lub sijhawm kev thaj yeeb nyab xeeb," zam kev hloov pauv ntau zaus, cov khoom siv poob qis, thiab cov nqi pov tseg los ntawm cov khoom siv tsis sib haum. Txawm tias muaj kev ua haujlwm zoo heev, cov khoom siv tsis raug yuav tawm tsam kom hloov mus rau huab cua kub, corrosion, thiab hnav.

Raws li cov chaw tsim khoom nrog 20 xyoo dhau los ntawm kev ua cua sov-resistant steel casting kev lag luam, Qingyun Hongsheng Machinery Accessories Co., Ltd. tau ntev tau txhawb cov khoom tseem ceeb hauv metallurgy, hluav taws xob fais fab, tshuaj, khoom siv hauv tsev thiab lwm yam kev lag luam, thiab muaj peev xwm ua tau raws li cov yam ntxwv thiab daim ntawv thov scenarios ntawm tag nrho cov khoom ntawm Suav thiab German} cov khoom siv hluav taws xob tiv taus{{4}. Tsab ntawv xov xwm no yuav nthuav tawm cov ntaub ntawv tseem ceeb hauv Suav thiab German cov ntaub ntawv los ntawm plaub qhov loj: cov ntaub ntawv muaj pes tsawg leeg, kev ua haujlwm tsis zoo, kev ua haujlwm hloov kho, thiab kev xaiv qhov tsis zoo, pab cov kws tshaj lij kev lag luam xaiv kom raug thiab zam kev taug kev. Nyob rau tib lub sijhawm, nws muab cov kev daws teeb meem tshwj xeeb los pab cov lag luam txo cov nqi thiab nce kev ua haujlwm.

I. Core Premise: Vim li cas xaiv cov cua sov-Resistant Steel Casting Materials tseem ceeb heev?

Tus nqi tseem ceeb ntawm cov cua sov-resistant steel castings yog kom ruaj khov oxidation tsis kam, siab - kub lub zog, thermal shock resistance, thiab corrosion kuj nyob rau hauv siab - kub ib puag ncig ntawm 450℃-1200℃. Qhov sib txawv ntawm cov khoom no yog qhov tseem ceeb vim qhov sib txawv ntawm cov ntsiab lus alloying (chromium, nickel, silicon, molybdenum, thiab lwm yam) hauv cov khoom. Cov ntsiab lus ntawm cov alloying sib txawv ncaj qha txiav txim siab lub siab txwv ntawm qhov kub thiab txias, tiv thaiv corrosion, thiab kev pab cuam lub neej ntawm castings.

Hauv kev xyaum, peb tau ntsib ntau yam teeb meem tshwm sim los ntawm kev xaiv cov khoom tsis raug: piv txwv li, siv cov cua sov zoo tib yam -cov hlau tsis muaj zog (xws li ZGCr28) hauv cov cua kub cua sov saum 1100℃yuav ua rau oxidation tev thiab tawg hauv 1-2 lub hlis; siv Suav tus qauv 2010 cov khoom siv hauv cov tshuaj sulfur-muaj flue gas tej yam kev mob yuav ua rau corrosion perforation nyob rau hauv 3 lub hlis, uas tsis tsuas yog nce nqi txij nkawm tab sis kuj ncua sij hawm ntau lawm.

Yog li ntawd, lub hauv paus ntsiab lus ntawm kev xaiv cov khoom siv yog:txuam nrog kev ua haujlwm kub, nruab nrab ib puag ncig, thiab lub zog thauj khoom, thiab xaiv cov khoom tsim nyog tshaj plaws raws li qhov yuav tsum tau ua (hauv tsev / xa tawm) thiab cov nqi siv nyiaj, tsis yog qhov muag tsis pom kev nrhiav "siab- kawg" lossis "qis- nqi".

II. Mainstream Suav Standard Thaum tshav kub kub-Resistant Steel Cov ntaub ntawv (Nyob rau hauv domestic tej yaam num, tus nqi siab-Kev hloov tau zoo)

Suav txheej txheem cua sov-resistant steel castings yog tsim raws li GB/T 8492-2014. Cov khoom naming pib nrog "ZG" (cam khwb cia hlau), ua raws li cov ntsiab lus ntawm alloying ntsiab. Lawv tsim nyog rau feem ntau cov kev lag luam hauv tsev, nrog rau tus nqi zoo tshaj -kev ua tau zoo, kev yuav khoom yooj yim, thiab sai sai tom qab- muag cov lus teb. Cov hauv qab no yog kev tsom xam qhov tob ntawm 3 feem ntau siv cov khoom siv hauv Suav teb:

(I) ZG40Cr25Ni20Si2 (feem ntau hu ua 2520 khoom) - Huab tais siab -Tub kub oxidation Resistance

Core CompositionCov pa roj carbon (C) Tsawg dua lossis sib npaug li 0.45%, Chromium (Cr) 24% -26%, Nickel (Ni) 19% -22%, Silicon (Si) 1.5% -2.5%, Manganese (Mn) Tsawg dua lossis sib npaug li 1.5%, Phosphorus (P) Less dua lossis sib npaug rau Sulfur (0.4%) 0.03% yog ';

High -Tsub Kev Ua Haujlwm: Qhov siab tshaj qhov kev pabcuam kub 1200 degree, ntev -lub sijhawm kev pabcuam kub 1050℃. Cr₂O₃ oxide zaj duab xis yog tsim rau saum npoo ntawm qhov kub thiab txias, tiv thaiv kev nkag mus rau oxygen thiab muaj zog oxidation tsis kam;

Cov yam ntxwv tseem ceeb: Siab siab - kub lub zog, zoo thermal poob siab tsis kam, muaj peev xwm tiv taus ntau zaus alternating kub thiab txias cuam tshuam (kub txawv tsawg dua los yog sib npaug rau 800 degree), thiab tib lub sij hawm muaj ib tug tej yam kua qaub thiab alkali corrosion kuj tsis pom tseeb embrittlement;

Cov txheej txheem yuav tsum tau ua: Nws yog ib qho tsim nyog yuav tsum tau siv qhov nruab nrab- zaus induction hluav taws xob rau qhov ua kom zoo, tswj qhov kub thiab txias ntawm 1500-1550 degree, txias maj mam tom qab nchuav, thiab tom qab ntawd ua kom kub kub quenching + tempering kho ntawm 1050℃kom tshem tawm cov kev ntxhov siab sab hauv thiab tsis txhob tawg;

Adaptable ua hauj lwm tej yam kev mob: Kev kho cua sov rauv cov raj, qhov cub hauv qab daim hlau, cov khoom siv pob tawb, cov khoom siv, cov cement kiln qhov ncauj tiv thaiv, preheaters, sab hauv ob sab ntawm siab -kub tshuaj tiv thaiv kettles, siab - kub radiant tubes thiab lwm yam siab - qhov kub thiab txias scenarios saum 1000 degree;

Kev Pabcuam Lub Neej: Raws li kev ua haujlwm siab - qhov kub thiab txias ua haujlwm, lub neej kev pabcuam tuaj yeem ncav cuag 12-24 lub hlis, uas yog ntau dua 5 npaug ntawm cov hlau uas tsis muaj cua sov.

(II) ZG30Cr20Ni10 (feem ntau hu ua 2010 cov ntaub ntawv) - Tus nqi sib npaug-Kev xaiv ua tau zoo

Core CompositionCov pa roj carbon (C) Tsawg dua lossis sib npaug li 0.35%, Chromium (Cr) 19% -22%, Nickel (Ni) 9% -11%, Silicon (Si) Tsawg dua lossis sib npaug li 1.5%, Manganese (Mn) Tsawg dua lossis sib npaug li 1.5%, Phosphorus (P) Tsawg dua lossis sib npaug rau Sulfur (0.4%) 0.03% yog ';

High -Tsub Kev Ua Haujlwm: Qhov kev pabcuam kub siab tshaj 1100 degree, ntev-lub sijhawm kev pabcuam kub 950 degree, zoo oxidation tsis kam, ruaj khov lub zog ntawm qhov kub thiab txias, tsis yooj yim rau soften thiab deform;

Cov yam ntxwv tseem ceeb: Sib npaug hnav tsis kam thiab corrosion kuj, kev ua haujlwm zoo heev, tuaj yeem drilled, welded thiab lwm yam kev ua haujlwm thib ob, tus nqi yog kwv yees li 30% qis dua 2520 cov khoom, nrog rau cov nqi zoo tshaj -kev ua tau zoo;

Cov txheej txheem yuav tsum tau uasmelting kub 1480-1520 degree, tsis muaj kev kho cua sov yuav tsum tau, pa quenching + tempering yog txaus, high efficiency efficiency thiab luv luv lub sij hawm;

Adaptable ua hauj lwm tej yam kev mob: Metallurgical furnace grate, boiler burner supports, chemical conveying pipes, high -kub hoppers thiab conveyor chains in the building material industry, flue gas pipe castings in the electric power industry and other medium and high -kub scenarios of 800-1000℃;

Kev Pabcuam Lub Neej: Raws li kev ua haujlwm zoo, lub neej kev pabcuam tuaj yeem ncav cuag 6-12 lub hlis, tsim rau cov haujlwm hauv tsev rhiab rau tus nqi thiab nruab nrab kub.

(III) ZGCr28 (High-Chromium Khoom) - Economy thiab Durable, Nyiam rau Sulfur Corrosion Resistance

Core Composition: Carbon (C) 0.30%-0.50%, Chromium (Cr) 26%-30%, Silicon (Si) Tsawg dua lossis sib npaug li 1.5%, Manganese (Mn) Tsawg dua lossis sib npaug li 1.5%, Phosphorus (P) Tsawg dua lossis sib npaug li 0.04%, Sulfur (S) tra.0% n=0.0% sib npaug;

High -Tsub Kev Ua Haujlwm: Qhov kev pabcuam siab tshaj plaws yog 1000 degree, ntev -lub sijhawm kev pabcuam kub 850 degree, nruab nrab oxidation tsis kam, siab hardness ntawm kub kub, thiab zoo heev hnav tsis kam;

Cov yam ntxwv tseem ceeb: Muaj zog sulfur corrosion tsis kam, tuaj yeem hloov mus rau kev ua haujlwm ntawm sulfur- muaj cov pa roj thiab sulfur-cov ntaub ntawv, tus nqi qis, thiab yog qhov kev xaiv zoo tshaj rau qis- nqi siab- qhov kub thiab txias;

Cov txheej txheem yuav tsum tau ua: Cov txheej txheem smelting yog qhov yooj yim, tsis tas yuav ntxiv cov khoom siv npib tsib xee kim, cov nqi qis qis, tsim nyog rau ntau lawm;

Adaptable ua hauj lwm tej yam kev mob: Fais fab nroj tsuag boiler tshauv hoppers, siab - kub flue gas ducts, desulfurization khoom accessories, leej faj- muaj cov khoom siv thauj khoom hauv kev lag luam metallurgical, hnav- cov kab resistant thiab lwm yam xwm txheej hauv qab 800℃nrog sulfur- muaj lossis hnyav hnyav;

Kev Pabcuam Lub Neej: Raws li cov qauv kev ua haujlwm, kev pabcuam lub neej tuaj yeem ncav cuag 3-6 lub hlis, tsim nyog rau cov xwm txheej nrog kev tswj hwm tus nqi nruj thiab hloov tau ntau zaus.

III. Mainstream German Standard Thaum tshav kub kub-Resistant Steel Materials (Nyob rau Export Projects, Internationally Universal Standard)

German txheem cua sov-resistant steel castings yog tsim raws li DIN 17445. Cov khoom npe pib nrog "X", ua raws li cov ntsiab lus ntawm alloying ntsiab. Lawv muaj kev lees paub thoob ntiaj teb, kev tswj xyuas cov khoom muaj tseeb dua, thiab tsim nyog rau cov haujlwm xa tawm mus rau Tebchaws Europe, Sab Qab Teb Asia thiab lwm thaj chaw, tshwj xeeb tshaj yog rau siab -kawg qhov xwm txheej nrog cov cai nruj ntawm cov khoom siv thiab cov qauv ntsuas. Cov hauv qab no yog ib qho kev ntsuam xyuas qhov tob ntawm 2 feem ntau siv cov khoom siv German thiab lawv cov kev sib raug zoo nrog cov khoom siv hauv Suav teb:

(I) 1.4841 (X15CrNiSi25-21) - Raws li Suav Standard 2520, Nyiam rau High-End Exports

Core Composition (Piv nrog Suav Standard 2520): Carbon (C) Tsawg dua lossis sib npaug li 0.15% (qis dua 0.45% ntawm Suav tus qauv 2520), Chromium (Cr) 24% -26% (raws li Suav tus qauv), Nickel (Ni) 20% -22% (raws li Suav tus qauv), Silicon (Si) 1.5% tus qauv; -2. qhov sib txawv tseem ceeb yog cov ntsiab lus qis dua, cov khoom siv purer thiab tsawg dua impurities;

High -Tsub Kev Ua Haujlwm: Qhov kev pabcuam siab tshaj plaws yog 1150 degree, ntev -lub sijhawm kev pabcuam kub 1050℃(yuav ua tau raws li Suav tus qauv 2520), tab sis muaj zog carburization tsis kam, intergranular corrosion kuj, thiab zoo toughness ntawm qhov kub thiab txias;

Core Zoo: High precision nyob rau hauv kev tswj muaj pes tsawg leeg, txhua batch ntawm cov ntaub ntawv yuav tsum muab spectral nrhiav kom tau daim ntawv qhia thiab tsis yog -tuaj ntsuam xyuas, raws li EU cov qauv kev lag luam, thiab kev lees paub siab ntawm cov neeg siv khoom thoob ntiaj teb; cov ntaub ntawv siab purity, tsis yooj yim rau embrite thiab tawg ntawm qhov kub thiab txias, haum rau ntev - lub sij hawm tas mus li ntau lawm;

Cov txheej txheem yuav tsum tau uaSiv lub tshuab nqus tsev smelting txheej txheem nruj me ntsis tswj cov ntsiab lus impurity, thiab precisely tswj lub tshav kub kev kho mob kub ntawm 1050-1100℃los xyuas kom meej uniform thiab ruaj khov kev ua tau zoo;

Adaptable ua hauj lwm tej yam kev mob: Cov khoom tseem ceeb ntawm cov khoom siv hluav taws xob kho cua sov thiab cov khoom siv hluav taws xob xa tawm mus rau Tebchaws Europe, siab - cov khoom kub ntawm cov khoom siv tshuaj lom neeg siab - kawg, siab - qhov ntsuas kub siab tshaj 1000℃yuav tsum tau carburization tsis kam thiab corrosion kuj;

Qhov txawv ntawm Suav Standard 2520: Cov muaj pes tsawg leeg zoo sib xws, thiab nws tuaj yeem hloov pauv hauv kev ua haujlwm feem ntau; Txawm li cas los xij, 1.4841 muaj cov ntsiab lus qis dua thiab purity siab dua, thiab tus nqi yog 15% -20% siab dua li Suav tus qauv 2520, tsim rau kev xa tawm lossis high-end domestic tej yaam num.

(II) 1.4837 (X12CrNi23-13) - Raws li Suav Standard 2010, Nyiam rau Mid-End Exports

Core Composition (Piv nrog Suav Standard 2010): Cov pa roj carbon (C) Tsawg dua lossis sib npaug li 0.12% (qis dua 0.35% ntawm Suav tus qauv 2010), Chromium (Cr) 22%-24% (me ntsis siab dua Suav tus qauv 2010), Nickel (Ni) 12% -14% (me ntsis siab dua Suav qauv 2010); ntau meej muaj pes tsawg leeg, zoo oxidation kuj thiab thermal qaug zog kuj;

High -Tsub Kev Ua Haujlwm: Qhov kev pabcuam siab tshaj plaws yog 1050 degree, ntev -lub sijhawm ua haujlwm kub 950℃(raws li Suav tus qauv 2010), tab sis zoo dua siab- kub toughness, muaj peev xwm tiv taus ntau zaus hloov kub thiab txias, thiab tsis yooj yim tawg;

Core Zoo: Raws li cov qauv thoob ntiaj teb, ua tiav cov ntawv xeem (tuaj yeem muab EN tus qauv kuaj), tsim nyog rau cov haujlwm xa tawm; cov khoom zoo toughness, kev ua haujlwm zoo heev, tuaj yeem ua tau raws li cov kev xav tau ntawm cov khoom siv tshwj xeeb- zoo li qhov chaw;

Cov txheej txheem yuav tsum tau ua: Nruab nrab-frequency refining + nqus degassing kom tshem tawm impurities thiab pores nyob rau hauv cov hlau molten, uniform hardness tom qab kev kho cua sov, thiab siab nto tiav;

Adaptable ua hauj lwm tej yam kev mob: Exported metallurgical khoom, boiler accessories, siab -kub tshuaj conveying qhov chaw, siab - kub Cheebtsam ntawm high-kawg cov khoom siv tsev thiab lwm yam nruab nrab thiab siab - kub scenarios ntawm 800-1000℃;

Qhov txawv ntawm Suav Standard 2010: me ntsis siab dua chromium thiab npib tsib xee cov ntsiab lus, zoo dua toughness thiab oxidation kuj, thiab tus nqi yog 10% -15% siab tshaj Suav tus qauv 2010, haum rau export los yog high-end domestic tej yaam num nrog ntau dua kev ua tau zoo.

IV. Cov lus sib piv tseem ceeb ntawm Suav Standard vs. German Standard Materials (Clear at a Glance, Quick Selection)

V. 3 Lub hauv paus ntsiab lus ntawm kev xaiv cov khoom (Key rau zam qhov pitfalls)

Ntau tus kws kho mob feem ntau ua rau poob rau hauv qhov pitfalls ntawm "qhov kim dua qhov zoo dua" lossis "Suav tus qauv tsis zoo li tus qauv German" thaum xaiv cov khoom siv. Qhov tseeb, qhov tseem ceeb ntawm kev xaiv yog "kev hloov pauv". Kev sib xyaw ua ke 3 lub hauv paus ntsiab lus hauv qab no tuaj yeem zam kom tsis txhob muaj teeb meem:

Txoj Cai 1: Siv qhov ntsuas kub ua haujlwm raws li lub hauv paus tseem ceeb (Qhov tseem ceeb tshaj plaws)

Kub ncaj qha txiav txim siab xaiv cov khoom siv. Thaum dhau qhov ntev -lub sij hawm kev pab kub ntawm cov khoom, lub casting yuav sai sai oxidize, soften thiab tawg:

Hauv qab 800 degree: Qhov tseem ceeb yog muab rau ZGCr28, uas yog qis- nqi, sulfur- tiv taus thiab hnav- tiv taus, ua tau raws li qhov xav tau ntawm qhov kub siab tshaj -;

800-1000 degree: Xaiv ZG30Cr20Ni10 (Suav tus qauv) lossis 1.4837 (German tus qauv) kom sib npaug kev ua haujlwm thiab tus nqi;

Tshaj 1000 degree: Xaiv ZG40Cr25Ni20Si2 (Suav tus qauv) lossis 1.4841 (German tus qauv) kom ntseeg tau siab -kub oxidation kuj thiab deformation kuj.

Lub hauv paus ntsiab lus 2: Muab qhov nruab nrab ib puag ncig thiab xav txog kev tiv thaiv corrosion

Sulfur-muaj cov pa roj thiab sulfur- cov ntaub ntawv muaj: Qhov tseem ceeb yog muab rau cov khoom siv chromium siab (ZGCr28) kom tsis txhob muaj corrosion perforation;

Acid- puag ncig corrosion: Xaiv siab- cov ntaub ntawv npib tsib xee (2520/1.4841) los tsim cov oxide zaj duab xis tuab thiab tiv thaiv corrosion;

Carburizing ib puag ncig (xws li lub qhov cub kho cua sov): Xaiv German tus qauv 1.4841 lossis Suav tus qauv 2520, uas muaj cov carburization tsis kam thiab zam cov khoom embrittlement.

Lub hauv paus ntsiab lus 3: Muab cov kev xav tau ntawm qhov project thiab sib npaug nqi thiab kev ua haujlwm

Cov haujlwm hauv tsev, tus nqi-rhiab heev, tsis muaj qhov tshwj xeeb: Xaiv cov khoom siv hauv Suav teb (2520/2010/ZGCr28), uas muaj tus nqi siab- ua tau zoo thiab yooj yim tom qab- kev muag khoom;

Export tej yaam num, EU tus qauv yuav tsum tau, siab - kawg scenarios: Xaiv cov ntaub ntawv txheem German (1.4841/1.4837), uas tau ua tiav kev xeem thiab kev lees paub thoob ntiaj teb;

Hnyav load, nquag hloov kub thiab txias: Xaiv 2520/1.4841 cov ntaub ntawv, uas muaj zog thermal shock resistance thiab deformation tsis kam, thiab ntev kev pab cuam lub neej.

VI. Cov Lus Nug thiab Cov Lus Teb Kev Lag Luam Feem Ntau (Tshem Cov Ntsiab Lus Mob, Cov Kev Kho Kom Zoo)

Q1: Vim li cas tus nqi ntawm 2520 khoom (ZG40Cr25Ni20Si2) ntau dua li cov cua sov zoo tib yam -cov hlau tsis muaj zog?

A1: Muaj ob lub laj thawj tseem ceeb:

① High alloy nqi: 2520 cov khoom muaj li 25% chromium thiab 20% npib tsib xee. Nickel yog cov hlau muaj txiaj ntsig nrog tus nqi hloov pauv loj, suav txog ntau dua 60% ntawm cov khoom siv;

② Cov txheej txheem siab: Nws yuav tsum tau txais cov txheej txheem nyuaj xws li nruab nrab- zaus refining, qeeb txias, thiab siab -kub kub kho kom tshem tawm impurities, tshem tawm kev ntxhov siab sab hauv, thiab tsis txhob tawg, ua rau lub voj voog ntev thiab poob siab. Txawm li cas los xij, nyob rau lub sijhawm ntev, kev pabcuam lub neej ntawm 2520 cov khoom siv ntau dua 5 npaug ntawm cov cua sov zoo tib yam-cov hlau tsis muaj zog, uas tuaj yeem txo qhov hloov zaus, cov nqi tu thiab kev poob qis, thiab yog tus nqi ntau dua - siv tau ntev -.

Q2: Tus qauv German 1.4841 thiab Suav tus qauv 2520 puas tuaj yeem hloov pauv tau?

A2: Lawv tuaj yeem hloov pauv hauv kev ua haujlwm feem ntau vim tias lawv cov ntsiab lus chromium thiab npib tsib xee yog qhov pib zoo ib yam, thiab qhov siab - qhov ua haujlwm kub tsis txawv ntau. Txawm li cas los xij, muaj ob qhov xwm txheej uas qhov kev sib pauv tsis pom zoo:

① Rau cov haujlwm xa tawm mus rau Tebchaws Europe, qhov tseem ceeb yog muab rau 1.4841, uas ua raws li EU DIN cov qauv, muaj kev lees paub ntau dua rau cov neeg siv khoom, thiab yuav tsum muaj cov ntaub ntawv xeem sib xws;

② Rau cov xwm txheej uas muaj carburization hnyav thiab intergranular corrosion, 1.4841 muaj cov ntsiab lus qis dua thiab purity siab dua, thiab muaj zog carburization tsis kam, ua rau nws haum rau cov kev ua haujlwm zoo li no. Peb tuaj yeem tsim cov khoom siv ob qho tib si thiab muab cov lus qhia hloov kho kom raug raws li cov neeg siv khoom xav tau.

Q3: Ntxiv rau cov ntaub ntawv, dab tsi lwm yam yuav tsum tau xav txog thaum xaiv?

A3: Cov khoom yog lub hauv paus, tab sis 3 cov ntsiab lus hauv qab no tsis tuaj yeem tsis quav ntsej:

① Casting txheej txheem: Precision casting tuaj yeem ua kom qhov tseeb qhov tseeb (± 0.5mm), zam kev ua haujlwm thib ob, thiab txo cov teeb meem kev teeb tsa;

② Cov txheej txheem kev kho cua sov: Cov txheej txheem quenching + tempering tuaj yeem tshem tawm kev ntxhov siab sab hauv thiab txhim kho cov thermal shock tsis kam ntawm castings;

③ Cov chaw tsim khoom muaj zog: Cov chaw tsim khoom tuaj yeem muab cov ntaub ntawv soj ntsuam cov ntaub ntawv thiab kev tswj xyuas cov txheej txheem, nrog kev lav paub tom qab- kev muag khoom, zam kev yuav khoom "cov ntaub ntawv cuav" (xws li txo cov nickel thiab chromium cov ntsiab lus kom dhau cov khoom tsis zoo raws li siab- cov khoom zoo).

Q4: Vim li cas thiaj siab - cov khoom siv chromium (ZGCr28) tiv taus kub yam tsis muaj npib tsib xee?

A4: Lub siab -kub tsis kam ntawm siab- cov ntaub ntawv chromium feem ntau yog nyob ntawm chromium ntsiab. Thaum cov ntsiab lus chromium nce mus txog 26%-30%, Cr₂O₃ oxide zaj duab xis ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom ntom Cr₂O₃ oxide zaj duab xis tsim rau saum npoo ntawm qhov kub thiab txias, tiv thaiv cov pa oxygen nkag mus, yog li ua tiav oxidation tsis kam thiab siab -kub tsis kam. Txawm li cas los xij, vim tsis muaj cov npib tsib xee, nws qhov siab - kub lub zog thiab thermal shock tsis zoo li 2520/1.4841 cov ntaub ntawv, thiab nws tsuas yog hloov tau rau cov xwm txheej hauv qab 800℃nrog rau lub neej luv luv, tsim nyog rau cov nqi qis thiab qis-kub qhov xav tau scenarios.

VII. Kev Lag Luam Luam (Cov Chaw Tsim Khoom, Kev Tsim Kho Kev Ua Haujlwm, Kev txo nqi thiab kev txhim kho kev ua tau zoo)

Cov kws tshaj lij hauv tshav kub-Resistant Steel Casting Materials|Tag Nrho Kev Kho Kom Zoo rau Suav thiab German Standards, Kev txhawj xeeb - Xaiv dawb. Tag Nrho Cov Khoom Siv: 2520/2010/ZGCr28/1.4841/1.4837, Xaiv cov khoom raws li qhov xav tau. Precision Craftsmanship: Nruab nrab-Frequency Refining + High-Tub Kub Kho Mob + Tag Nrho-Kev soj ntsuam zoo, tsis muaj cua qhov, tsis muaj xuab zeb qhov, kev ua haujlwm ruaj khov. Kev Pabcuam Dawb: Kev taw qhia txog kev xaiv cov khoom siv, kos duab optimization, kev ua haujlwm ntawm kev hloov kho kom haum, pab koj kom tsis txhob muaj teeb meem thiab txo cov nqi. Qhov Chaw Tsim Khoom: Tsis Muaj Tus Neeg Nruab Nrab, Tus Nqi Ncaj Ncees los ntawm 20%-30%, Ntau Cov Nqis Rau Kev Yuav Khoom. Kev xa khoom sai: Cov khoom tsis tu ncua hauv Tshuag, Tsis yog- Cov khoom xa tuaj hauv 7-15 hnub, Kev txiav txim sai sai tuaj yeem ua tiav. Kev lees paub zoo: Txhua pawg muab Spectral Detection thiab Tsis yog -Daim Ntawv Qhia Txog Kev Tshawb Fawb, 12-Hloov Kev Ua Haujlwm Zoo, Kev Pabcuam Tomqab Muag Tsis Muaj Kev Tsis Txaus Siab.

Nrog 20 xyoo ntawm kev paub nyob rau hauv tshav kub-resistant steel castings, peb pab ntau tshaj 500 industrial enterprises thoob ntiaj teb, yoog mus rau siab - kub ua hauj lwm tej yam kev mob nyob rau hauv metallurgy, hluav taws xob fais fab, tshuaj, tsev cov ntaub ntawv thiab lwm yam lag luam. Txawm hais tias koj xaiv Suav tus qauv rau cov haujlwm hauv tsev lossis German tus qauv rau cov haujlwm xa tawm, peb tuaj yeem muab ib qho - rau -ib qho kev daws teeb meem, cov lus qhia pub dawb thiab kev ua kom zoo. Nyem rau kev sab laj thiab tau txais siab -zoo thiab nqi-kub kub zoo- tiv taus steel castings!