Kedu ihe bụ HSS?

Nchara dị elu (HSS) bụ ọkọlọtọ maka ngwaọrụ ịkpụ igwe kemgbe afọ 1830.

Igwe ọkụ dị elu (HSS) bụ igwe eji arụ ọrụ nke nwere ike siri ike, akwa mkpuchi mkpuchi na oke okpomọkụ. A na-akpọkwa ya ígwè dị nkọ, nke pụtara na ọ nwere ike isi ike ma nọgide na-adị nkọ ọbụna mgbe a jụrụ oyi na ikuku n'oge a na-emenyụ ya.

Nchara dị elu nwere pasentị dị elu nke carbon na ọla ndị ọzọ. N'iburu n'uche na ihe mejupụtara ahụ bụ njirimara kachasị mkpa nke ígwè dị elu, HSS nwere tungsten, molybdenum, chromium, vanadium, cobalt, na ihe ndị ọzọ na-emepụta carbide na ngụkọta nke ihe dịka 10 ruo 25% nke ihe ndị na-emepụta ihe. Ngwakọta ndị a na-enye HSS nke ọma ịkpụcha ihe na akụrụngwa dị ka eyi nguzogide. Na steeti emenyụchara, ígwè, chromium, s    ome tungsten, yana nnukwu carbon n'ụdị nchara na-agba ọsọ na-adị nnukwu carbide siri ike nke nwere ike imeziwanye nguzogide igwe ahụ.

Tụkwasị na nke ahụ, a maara HSS na ọ nwere nnukwu ike ọkụ. Nke a bụ n'ihi na tungsten na-agbaze na matriks. Ike siri ike nke ígwè dị elu nwere ike iru ogo 650. Tungsten, molybdenum, chromium, vanadium, cobalt, na carbide ndị ọzọ nwere ihe ndị na-enyere aka ịnọgide na-esi ike dị elu na mbelata okpomọkụ (ihe dịka 500 ° C).

Tụnyere HSS na ígwè ọrụ carbon nwere ike ịma nke nwere ike siri ike na ọnụ ụlọ mgbe emenyụchara ya na iwe ọkụ na obere okpomọkụ. Ma mgbe okpomọkụ dị elu karịa 200 Celsius, ike nke ígwè ngwá ọrụ carbon ga-ada nke ọma. Ọzọkwa, ike nke ígwè ngwá ọrụ carbon na 500 Celsius ga-adaba n'ogo yiri nke ahụ nke ala annealed ya, nke pụtara na ike ya ịkpụ ígwè na-efunahụ kpamkpam. Ihe omume a na-egbochi iji ígwè ngwá ọrụ carbon na-egbutu ngwaọrụ. Igwe ọkụ na-agba ọsọ na-eme ka isi ihe adịghị ike nke ígwè ọrụ carbon n'ihi ịdị mma ha na-ekpo ọkụ.

Carbide cimented dị elu karịa HSS n'ọtụtụ ọnọdụ. Ọ bụrụ na ị nwere mmasị na ngwaahịa tungsten carbide ma chọọ ozi ndị ọzọ na nkọwa, ị nwere ike ịkpọtụrụ anyị site na ekwentị ma ọ bụ mail n'aka ekpe ma ọ bụ zipu ozi US na ala nke ibe. Anyị na-atụ anya ajụjụ gị.