7A04 alloy bụ usoro Al-Zn-Mg-Cu na-ekpo ọkụ na-ekpo ọkụ aerospace super-hard aluminum alloy, nke enwere ike ịgwọ ọkụ ma wusie ike. Edepụtara ihe mejupụtara ya na GB/T3190-2008, ọ dakọtara na alloy B95 nke Soviet Union na Russia na AlZnMgCu1 nke Germany. .5.3.4365 alloy bụ nhata, n'ihi na na 1944 na 95 Soviet Union si 95th factory nke ọma na-anwale-mepụtara a alloy ọkara emechara ngwaahịa, n'ihi ya aha B1957 alloy. Na XNUMX, China Northeast Light Alloy Co., Ltd. (mgbe ahụ Harbin Aluminum Processing Plant) mepụtara alloy a site n'enyemaka nke ndị ọkachamara Soviet. Alloy efere na extruded ihe.

Isi ihe dị na 7A04 alloy bụ na ike mkpụrụ ya Rpo.2 dị nso na ike nkwụsị nke Rm, plasticity ya dị ala, ọ na-enwekwa mmetụta nke nrụgide nrụgide, karịsịa mgbe a na-etinye ya n'ibu vibration na ugboro ugboro static ibu. Maka imewe, imepụta na mgbakọ nke akụkụ, ntinye nrụgide na ihe ndị ọzọ na-akpata nrụgide kwesịrị ka a zere dịka o kwere mee. 7A04 alloy abụghị okpomọkụ na-eguzogide ma ga-adị nro nke ọma ma ọ bụrụ na okpomọkụ na-arụ ọrụ dị elu karịa 125 ℃. Nguzogide corrosion corrosion nrụgide nke nnukwu 7A04 alloy workpieces na ntụgharị ntụgharị mkpụmkpụ (ST) dị ala.

Ngwakọta kemịkalụ nke 7A04 alloy (oke%): 0.50Si, 0.50Fe, (1.4-2.0) Cu, (0.20-0.6) Mn, (1.8-2.8) Mg, (0.1-0.25) Cr, (5.0 —-7.0) ) Zn, 0.10Ti, adịghị ọcha ndị ọzọ bụ 0.05 n'otu n'otu, ngụkọta bụ 0.10, ndị ọzọ bụ Al. Nkọwa maka ezughị ezu annealing nke 7A04 alloy ọkara emechara na etiti ngwaahịa efere, ibe, profaịlụ, Ogwe na ọkpọkọ (290-320) ℃ / (2-4) h, ikuku jụrụ; nkọwa maka annealing zuru ezu (390-430) ℃ / (0.5-1.5) h, ọkụ jụrụ ka ≤ 200 ℃ na okpomọkụ mbelata ọnụego nke ≤ 30 ℃ / h, ikuku jụrụ nke ọkụ, ma ọ bụ annealing na (320-380). ) ℃ maka (1-2) h. Iji meziwanye arụmọrụ nke ọkụ ọla, ụlọ ọrụ ahụ na-agbanyekarị na 400 ° C-420 Celsius maka awa 2, na-eme ka ọ dị jụụ ruo <150 ° C na ọnụego jụrụ oyi nke 30 ° C / h, wee kpoo ikuku. ọkụ.

The ngwọta ọgwụgwọ okpomọkụ nke a alloy bụ 465 ℃-475 ℃, quenched na mmiri na ụlọ okpomọkụ, na nyefe oge bụ mkpumkpu karịa 25s. Ụlọ ọrụ nhazi nke aluminom na-agbasokarị ọgwụgwọ ezubere iche maka ọgwụgwọ ngwọta na nkọwa ọgwụgwọ ịka nká dịka ngwaahịa dị iche iche na ngwaahịa dị iche iche si dị.

Ngwá ọrụ na-agbaze na nkedo na mmanụ ọkụ nke 7A04 alloy bụ otu ihe ahụ nke aluminom ndị ọzọ. Otú ọ dị, n'ihi nnukwu okpomọkụ na-agbaze ya na nnukwu ọdịiche dị na njupụta nke ihe ndị na-emepụta ihe na-emepụta ihe, nkewa na-adịkarị mfe ime n'oge agbaze, na ingot na-adịkarị mfe mgbawa, nkwụsị, na ngwọta. Ọ dị mfe ịnweta ikuku, a ga-emepụta ihe ndị ọzọ oxidized n'ime ingot. Iji belata ntụpọ ndị a, na mgbakwunye na ịchịkwa nke ọma ihe mejupụtara nke alloy, a ghaghị itinye nlebara anya na njikwa nke usoro ịgbaze na nkedo.

Okpomọkụ nkedo gburugburu gburugburu bụ 720℃—745℃, ikuku ingot nkedo okpomọkụ bụ 725℃—740℃; slab nkedo okpomọkụ bụ 685 ℃-745 ℃; Ingots buru ibu, ingots oghere na slabs kwesịrị ịtọ tupu nkedo, akụkụ ọnụ ụzọ ámá kwesịrị ịdị ọkụ mgbe nkedo gasịrị.

A na-eji 7A04 alloy eme ihe iji rụpụta akụkụ arụrụ arụ ụgbọ elu: ogwe, eriri, nnukwu isi, skins, ọgịrịga, nkwonkwo, ọdịda. gia akụkụ, wdg The ọkara emecha ngwaahịa nwere ike inye bụ: efere, ibe, profaịlụ, ibe, Ogwe, ọkpọkọ, mgbidi panel, free na-arụ ọrụ wee nwụọ na-arụ ọrụs, wdg

Alloy nwere mmetụta uche dị elu yana ike ike ọgwụgwụ axial dị ala. Ngwa ahụ ga-ahọrọrịrị ọdịdị nke nhazi nhazi ahụ, họrọ ọdịdị ya na ntinye uche kachasị dị ala, na mgbanwe nke akụkụ akụkụ na akụkụ mgbanwe niile kwesịrị ịdị nro iji zere maka mgbanwe mberede na mbelata eccentricity, fillet radii niile kwesịrị ịdị nro. ịbụ ≥2mm. Zere ncha, abrasions na dents siri ike mgbe ị na-edozi akụkụ.

Maka nnukwu ngwaahịa emechara ọkara, ọkachasị nnukwu forgings na profaịlụ dị mgbagwoju anya, a ga-enyocha arụmọrụ transverse nke ọma, yana nnwale dị iche iche na-adịghị emebi emebi kwesịrị iji hụ na ntụpọ dị n'ime oke ikike. Nguzogide corrosion nke 7A04 alloy na steeti T4 erughị eru, yabụ achọrọ ịka nká. Nguzogide corrosion nke mpempe akwụkwọ alloy 7A04 na-eme agadi nke aluminom dabara na nke mpempe akwụkwọ alloy 2A12 nke aluminom. Nguzogide corrosion nke ngwaahịa extruded na obere akụkụ akụkụ obe yiri nke aluminom duralumin enweghị mkpuchi. Usoro ọgwụgwọ ịka nká nke 7A04 alloy nwere nguzogide nrụrụ corrosion a pụrụ ịdabere na ya. Anodizing na n'elu ịse ọgwụgwọ nwere ike n'ụzọ dị irè na-echebe extruded ihe. Kwuru.

7A04-T6 alloy mpempe akwụkwọ nwere mma na-agbanwe modulus nke 66GN/mm2 na 20°C, ihe extruded ihe nke 71GN/mm2, na a ụgbọelu mgbaji agbaji siri ike Kc nke 50.64MN / (m3/2). Ọdịdị nke ọkara na-aga n'ihu nkedo 7A04 alloy ingot gụnyere α-Al ngwọta siri ike, oge T (AlCuMgZn) na oge S (Al2CuMg), yana obere ego nke Mg2Si, AlFeMnSi na Al6 (FeMn). The Ọdịdị mgbe ọgwụgwọ ọgwụgwọ bụ α S Mgbe ịka nká na 100 ℃-140 ℃, Ọdịdị na-aghọ α S MgZn2 T agba.

7A04 alloy nwere ike mebie site oyi ma ọ bụ okpomọkụ. Ọnụego nrụrụ na-ekpo ọkụ nke ingot bụ ihe na-erughị ma ọ bụ hà nhata 60%, na oke nrụrụ nke ihe ahụ mebiri emebi nwere ike iru 80%. Enwere ike ịmepụta forgings ndị nwere ọdịdị dị mgbagwoju anya, na okpomọkụ a na-eme ya bụ 380 ° C-430 ° C. Mgbe eme thermal mgbazi na akụkụ ma ọ bụ ọkara emechara ngwaahịa, ebu okpomọkụ bụ 130 ℃ ± 15 ℃, na okpomọkụ nke akụkụ onwe ya bụ 130 ℃ ± 10 ℃ ma ọ bụ 150 ℃ ± 10 ℃. Oge njide na 130 ℃ ± 10 ℃ bụ 10h-12h. Oge njide maka kpo oku na 150 ℃ ± 10 ℃ bụ 7h.

Ọnọdụ ọkọnọ nke mgbidi mgbidi extruded bụ T6, enwere ike idozi ya na steeti a, a ga-ekpochakwa ya ọkụ na steeti ọhụrụ menyụọ. The otu-ogbo ịka nká nkọwapụta bụ 140 ℃ / 16h; abụọ-ogbo ịka nká na 120 ℃ / 3h 160 ℃ / 3h nwere ike nweta ezi keukwu arụmọrụ. 7A04 alloy nwere ezigbo ntụpọ ịgbado ọkụ arụmọrụ na machinability.

Njikọ na akụkọ a ： 7A04 Alloy - Mpụta Ike dị nso na ike tensile

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