Ịtụba n'ime ebe a na-ehulata ma ọ bụ na-agbatị agbatị ga-ebutekwa nsogbu mgbawa ọnụ n'oge nrụrụ nke picklingọkpọkọ enweghị nkebi.
0Cr15mm9Cu2nin na 0Cr17Mm6ni4Cu2N igwe anaghị agba nchara bụ 200 usoro austenitic igwe anaghị agba nchara, nke dị iche na omenala 200 usoro na 300 usoro austenitic.igwe anaghị agba nchara.Ụdị nke a200igwe anaghị agba nchara square tubena-adịkarị mfe n'ọnụ ọnụ cracks, elu cracks, Nsogbu nke ogbenye ịkpụzi àgwà nke ihu mmebi.N'ime mmepụta na-ekpo ọkụ na-ekpo ọkụ, ụdị nchara abụọ ahụ na-agbaso usoro ọkụ ọkụ 200, na ọkụ ọkụ na-achịkwa na 1215-1230C.Sistemụ ọkụ ya na-emejuputa ụdị kọmpụta nke abụọ “Rough Rolling Regulations” na “Mechaa Iwu Ntugharị”.800-1020C.Na-ekwu maka usoro mpịakọta ọkụ n'ezie nke pickling abụọọkpọkọ enweghị nkebi, chepụta usoro kpo oku na nrụrụ okpomọkụ nke usoro nnwale a, wee mee nnwale na-ekpo ọkụ na-ekpo ọkụ na-ekpo ọkụ na ngwaọrụ ule na-ekpo ọkụ nke anyị onwe anyị mere ma rụpụta ya.Ozi nke taa nke ọgbakọ ọkpọkọ square: iji AOD + LF refining usoro iji mepụta 0Cr15Mm9Cu2Nn na 0Cr17I6ni4Cu2N pickling na-abụghị vaskụla na-aga n'ihu nkedo ọjọọ na-aga n'ihu nkedo site vetikal ekwe na-aga n'ihu nkedo usoro, cross-section size nke na-aga n'ihu nkedo ọjọọ bụ 220m1260m.A na-egosi akụkụ nke oke % na tebụl.Microstructure nke shei ọjọọ dị na omimi dị iche iche nke 0Cr15m9Cu2Nn acid na-asachapụ nkedo na-aga n'ihu na-abụghị vaskụla, dị ka egosiri na ọnụ ọgụgụ ahụ, kwekọrọ na omimi nke shei ọjọọ nke nkedo.Mgbe ọnọdụ na-adịghị mma mere na ọnọdụ okpomọkụ nke nsọtụ nke nkedo agaghị ada n'ebe dị ala na-ekpo ọkụ.Microstructure na 15 na 25m.Ọdịdị nke microstructure na nha ọka nke 20g mmiri ọkụ na-ekpo ọkụ ga-abawanye na omimi nke shei slab.Mgbanwe, mana gosi ụfọdụ ihe dị iche.N'ime omimi shei d0m, microstructure bụ nke kachasị ụdị ụdị dendrite ọkpụkpụ, na oghere dendrite nke mbụ na nke abụọ dị obere.Na d5mm, ọ bụ nke kachasị usoro dendrite.
Oghere Dendrite buru ibu.Na d>15mn, dendrites dị ka irighiri, mana na d25m, ha bụ kristal cellular.The microstructure nke Cr17Im6ni4Cu2N square tube na-aga n'ihu nkedo slab na fig. 1 na-egosi na na-aga n'ihu nkedo ọjọọ shei bụ isi a dendrite Ọdịdị.Ọ bụ ezie na e nwere ụfọdụ ndịiche dị na dendrite morphology, usoro ya bụ tumadi mejupụtara a isi awọ austenite matrix, na nwa ferrite.Dịka tube square 0Cr15Mn9Cu2Nin, ka omimi nke shei na-abawanye, oghere dendrite nke mbụ na nke abụọ na-abawanye nke nta nke nta, na ọdịdị dendrite na-agbanwe site na ọkpụkpụ gaa na ikpuru., Plastic omume na usoro nke martensitic frasi mgbanwe na eyi na-eguzogide ọgwụ mejupụtara ígwè ọkpọkọ e experimentally enyocha, na austenite ọka size na ya austenite ọka ibu iwu, martensite orientation, frasi mgbanwe plasticity, Mmetụta nke nrụgide na morphology na n'ibu Njirimara. nke ọkpọkọ nchara mejupụtara na-eguzogide iyi.N'okpuru ọnọdụ okpomọkụ 1010 austenitization 15mir, mmalite okpomọkụ point s na njedebe okpomọkụ ㎡ nke martensitic mgbanwe na-abawanye na mmụba nke austenitization okpomọkụ, na paramita na frasi mgbanwe plastic nlereanya nke eyi na-eguzogide ihe mejupụtara ígwè ọkpọkọ mgbanwe na-abawanye na na-abawanye nha anya nrụgide.Mgbe austenitization okpomọkụ dị ala karịa 1050C, uto ọka na-egosi usoro uto nkịtị.Na mmụba nke austenitization oge, gburugburu ígwè s na-abawanye.-3500 thermal simulator, plastic omume nke wear-eguzogide mejupụtara ígwè ọkpọkọ n'oge martensitic mgbanwe usoro a experimentally enyocha ya, na austenite ọka size na ya austenite ọka iwu uto, na martensite Effects nke nghazi, usoro mgbanwe plasticity. nrụgide na morphology na n'ibu Njirimara nke eyi na-eguzogide ọgwụ mejupụtara ígwè ọkpọkọ.N'okpuru ọnọdụ nke 1010 austenitization maka nkeji 15, mmalite okpomọkụ ebe s na njedebe okpomọkụ ㎡ nke martensitic mgbanwe na-abawanye na mmụba nke austenitization okpomọkụ, na oke K na frasi mgbanwe plasticity nlereanya nke eyi na-eguzogide ihe mejupụtara ígwè ọkpọkọ na-abawanye na nhata nrụgide.Mgbe okpomọkụ austenitizing dị ala karịa 1050C, uto ọka na-egosi usoro uto nkịtị.Ka oge austenitizing na-abawanye, Ọ na-abawanye, na mgbanwe B-phase na-ekewa n'ime oke ọka.Nucleation na uto nke usoro na E nwere usoro abụọ nke nucleation na uto nke Widmanite a.usoro.Mgbe ọnụego jụrụ oyi na-abawanye site na 0.1C/s ruo 150C/s, usoro mgbanwe nke B+a na + na-abụkarị na Ti-55 alloy.Mkpụrụ ọka ndị dị na ọkpọkọ nchara mejupụtara na-eguzogide iyi ka nwere ike ịdịgidere otu na obere, na martensite Fine coherent complex carbides na-ebuli elu n'elu.N'iji microscope elektrọn nnyefe, nyocha eletrọn microscope, x-ray diffractometer na ụzọ electrochemical iji mụọ microstructure na njirimara electrochemical nke alloys nchara na-eguzogide ọgwụ na steeti dị iche iche dị ka steeti nkedo, steeti homogenized, na steeti ụgbọ ala, na nyocha elektrọn EPM The morphology na nhazi nke isi ihe dị na ọkpọkọ ígwè na-eguzogide iyi nke annealed na 150-300C ka a na-enyocha site na nyocha ụdị ike dị iche iche.
Oge nzipu: Mar-30-2023