25Cr2MoVA inopisa yakakungurutswa simbi pepa

① Iwo manhamba maviri ekutanga kwenhamba yesimbi anoratidza kabhoni yesimbi, inoratidzwa mugumi-zviuru zveavhareji kabhoni yemukati, senge 40Cr, 25Cr2MoVA alloy chubhu.
②Iyo huru yealloying element musimbi, kunze kweiyo yega microalloying element, inowanzo ratidzwa mune mashoma muzana. Kana iyo yepakati alloy yemukati iri pasi pe1.5%, kazhinji chete chiratidzo chechinhu chinoratidzwa munhamba yesimbi, uye zvirimo hazvina kuratidzwa. Zvisinei, mumamiriro ezvinhu anokosha, zviri nyore kukonzera kuvhiringidzika, uye nhamba "1" inogonawo kuiswa mushure mechiratidzo chechinhu, senge nhamba yesimbi "12CrMoV" uye "12Cr1MoV", yekare ine chromium ye 0.4-0.6. %, iyo yekupedzisira ine chromium ye 0.9-1.2%, uye mamwe ese akafanana. Kana avhareji yemukati yealloying element iri ≥1.5%, ≥2.5%, ≥3.5%..., zvirimo zvinofanirwa kuratidzwa mushure mechiratidzo chechinhu, chinogona kuratidzwa se2, 3, 4 ... etc. Semuenzaniso , 18Cr2Ni4WA.
③ Alloying zvinhu zvakaita sevanadium V, titanium Ti, aruminiyamu AL, boron B, uye isingawanzo pasi RE musimbi zvese zvine microalloying zvinhu. Kunyange zvazvo zvirimo zvakaderera zvikuru, zvinofanira kuramba zvichimakwa munhamba yesimbi. Semuenzaniso, mu20MnVB simbi. Vanadium ndeye 0.07-0.12%, uye boron ndeye 0.001-0.005%.
④Simbi yepamusoro-giredhi yepamusoro inofanirwa kuwedzera "A" pakupera kwenhamba yesimbi kuti isiyanise kubva kune yakajairwa yemhando yepamusoro simbi.
⑤ Special chinangwa alloy structural simbi, nhamba yesimbi inotaridzwa (kana yakashongedzwa) ine chiratidzo chinomiririra chinangwa chesimbi. Semuenzaniso, 30CrMnSi simbi yakakosha yeriveting screws, iyo nhamba yesimbi inoratidzirwa seML30CrMnSi.
Alloy pombi uye mapaipi asina musono ane hukama uye akasiyana, uye haafanire kuvhiringidzika.
Alloy pipe inotsanangurwa nesimbi pombi maererano nekugadzirwa kwezvinhu (kureva, zvinhu), sezvinoreva zita, pombi yakagadzirwa nealloy; nepo pombi isina musono inotsanangurwa nepombi yesimbi zvinoenderana nemaitiro ekugadzira (isina musono uye isina musono), mutsauko kubva kune isina musono pombi mapombi eSeam, anosanganisira akatwasuka musono akaiswa pombi uye mapaipi anotenderera.

	Muumbi weKemikari (%)
Steel Giredhi	C	Si	Mn	V		Cr	Mo
25Cr2MoVA	0.22～0.29	0.17～0.37	0.40～0.70	0.15～0.30		1.50～1.8	0.25～0.35

Mechanical properties

Goho simba σs/MPa (>=)	Kusimba simba σb/MPa (>=)	Elongation δ5/% (>=)	Kuderedzwa kwe nzvimbo ψ/% (>=)
≧785	≧930	≧14	≧55

【Kurapa Kupisa】
Kudzima tembiricha yekudziya (℃): 900; inotonhorera: mafuta
Kupisa kupisa tembiricha (℃): 640; coolant: isina chinhu

Isu tinogona kugadzira iyo 25Cr2MoVA ine zvinotevera zvinongedzo:

Round bar simbi: 1mm kusvika 3000mm

Simbi-yakaumbwa simbi: 1mm kusvika 2000mm

Plate simbi: 0.1mm kusvika 2500mm

Upamhi: 10mm kusvika 2500mm

Lenth: Tinogona kupa chero lenth zvichienderana nezvinodiwa nemutengi.

Kugadzira: Mashaft ane mativi/pombi/machubhu/slugs/donuts/cubes/mamwe maumbirwo

Tubings: OD: φ6-219 mm, nekukora kwemadziro kubva pa1-35 mm.

Zvinhu zvakapera: hot forging/hot rolling + annealing/normalizing + tempering/kudzima + kudzikama/chero mamiriro anoenderana nezvinodiwa nemutengi.

Mamiriro epamusoro: akayereswa (kupedza kushanda kunopisa)/pasi/machini akakasharara/machini akanaka/zvichienderana nezvinodiwa nemutengi.

Mafuro ekugadzira metallurgical: electrode arc + LF/VD/VOD/ESR/Vacuum consumable electrode.

Ultrasonic inspection: 100% ultrasonic inspection kune chero kusakwana kana zvichibva pane zvinodiwa nemutengiYakanaka sevhisi yemarudzi ese emaindasitiri, ine zvakanakira matekinoroji, zvishandiso uye mutengo.

Isu tinokushandirai nekuvimbika kwedu, kuperera, uye nehunyanzvi.