Ogo na ọnụọgụ nke igwe anaghị agba nchara welded pipe
Igwe anaghị agba nchara welded ọkpọkọ, nke a na-akpọ ọkpọkọ welded maka mkpụmkpụ, bụ ọkpọkọ ígwè nke a na-ejikarị ígwè ma ọ bụ nchara nchara eme ihe mgbe ọ kpụchara ya ma guzobe site na unit wee nwụọ. Ọkpụkpụ ígwè welded nwere uru nke usoro mmepụta dị mfe, nrụpụta mmepụta dị elu, ọtụtụ ụdị na nkọwapụta na ntinye ego na-erughị ala, ma ike ya n'ozuzu ya dị ala karịa nke ọkpọkọ ígwè.
Ebe ọ bụ na 1930s, na ngwa ngwa mmepe nke elu-edu warara na-aga n'ihu Rolling mmepụta na ọganihu nke ịgbado ọkụ na nnyocha technology, na weld àgwà na-aga n'ihu mma, iche na nkọwa nke welded ígwè ọkpọkọ na-amụba, na enweghị nkebi ígwè ọkpọkọ nwere. edochiri n'ọtụtụ ebe, ọkachasị na ọkpọkọ akụrụngwa na-ekpo ọkụ, ọkpọkọ ihe eji achọ mma, ọkpọkọ mmiri na-adị ala na obere nrụgide, wdg.
Obere dayameta igwe anaghị agba nchara welded ọkpọkọ na-emepụta na-aga n'ihu na-akara. The thicker mgbidi ọkpụrụkpụ, ukwuu nke itinye ego nke unit na fusion akụrụngwa, na obere echekwa na bara uru ọ bụ. The thinner mgbidi ọkpụrụkpụ bụ, ala ntinye-mpụta ruru ga-abụ; Nke abuo, usoro nke ngwaahịa na-ekpebi uru na ọghọm ya. N'ozuzu, ọkpọkọ ígwè welded nwere oke nkenke, nha mgbidi edo edo, nchapụta elu dị elu n'ime na n'èzí ọkpọkọ (ncha elu nke ọkpọkọ ígwè nke a na-ekpebi ọkwa elu nke efere ígwè), na enwere ike ịha nha ya. Ya mere, ọ na-etinye akụ na ụba ya na ihe ịchọ mma ya na ntinye nke mmiri mmiri dị elu, nke ọkara na nke dị ala.
316L igwe anaghị agba nchara welded ọkpọkọ bụ isi ọkpọkọ, n'ihi ya, ọ nwekwara ọtụtụ dị mkpa na-egosi ike, gụnyere ọtụtụ akụkụ. Ihe ndị na-esonụ bụ banyere egosi ike nke 16L igwe anaghị agba nchara welded ọkpọkọ. Dị ka usoro ule dị iche iche na ngwa ngwa si dị, enwere ike kewaa isi ike n'ime brinell hardness, Rockwell hardness, Vickers hardness, shore hardness, microhardness na elu okpomọkụ ike. Brinell, Rockwell na Vickers siri ike na-ejikarị maka ọkpọkọ.
1.Brinell hardness (HB) pịa bọọlụ nchara ma ọ bụ bọọlụ cemented carbide nwere otu dayameta n'ime ihe nlele n'elu ya na ike nnwale akọwapụtara (f), wepụ ike nnwale ahụ mgbe oge ejidere akọwapụtara, tụọ dayameta indentation (L) na nlele. elu, na Brinell hardness uru bụ quotient enwetara site na nkerisi ule ike site indentation spherical elu ebe. Kwuru na HBS (bọọlụ ígwè), unit bụ n / mm2 (MPA), na ngụkọta usoro bụ dị ka ndị a: F - ule ike enwe n'ime elu nke 316L igwe anaghị agba nchara welded ọkpọkọ sample, N, D - dayameta nke ígwè bọl. maka ule, MMD - otu dayameta nke indentation, mm. Mkpebi siri ike nke Brinell bụ ihe ziri ezi ma bụrụ nke a pụrụ ịdabere na ya, mana n'ozuzu HBS dabara adaba maka ihe igwe dị n'okpuru 450N / mm2 (MPA), ọ bụghị maka ígwè siri ike ma ọ bụ 316L igwe anaghị agba nchara welded ọkpọkọ. Na 316L igwe anaghị agba nchara welded ọkpọkọ, Brinell siri ike bụ nke a na-ejikarị. A na-ejikarị dayameta ntinye aka D iji gosipụta ike nke ihe ahụ, nke nwere nghọta na adaba.
Dị ka ihe atụ, 120hbs10 / 1000130 na-egosi na Brinell hardness uru tụrụ site na iji a 10mm dayameta ígwè bọọlụ n'okpuru edinam 1000kgf (9.807kn) ule ike maka 30s bụ 120N / mm2 (MPA).
2.Rockwell hardness (HK) Rockwell hardness test, dị ka Brinell hardness test, bụ usoro ule indentation. Ihe dị iche bụ na ọ na-atụle omimi indentation, ya bụ, n'okpuru usoro nke mbụ Yong test Force (FO) na ngụkọta ule ike (f), pịa indenter (igwe igwe igwe ma ọ bụ bọọlụ nchara) n'ime ihe nlele ahụ, wepụ ya. ike ule bụ isi mgbe ịkọwapụta oge njide, wee gbakọọ uru ike siri ike site na mmụba omimi indentation atụpụtara (E). Uru ya bụ ọnụọgụ amaghị, akara hr nọchiri anya ya. The akpịrịkpa eji na-agụnye 9 akpịrịkpa dị ka a, B, C, D, e, F, G, h na K. The akpịrịkpa a na-ejikarị maka hardness ule nke 316L igwe anaghị agba nchara welded ọkpọkọ bụ n'ozuzu a, B na C, ntụgharị HRA. HRB na HRC. A na-agbakọ uru ike siri ike site na usoro a: mgbe a na-eji ọnụ ọgụgụ a na C maka ule, HR = 100-e. mgbe a na-eji ọnụ ọgụgụ B maka ule, HR = 130-e. na usoro, e -- residual indentation omimi increment, nke egosiri na nkeji nke 0.002mm, ya bụ, mgbe ntugharị axial nke indenter bụ otu unit (0.002mm), ọ bụ ihe dị ka ọnụ ọgụgụ nke hardness Rockwell. mgbanwe.
