Ke kumu o ka vulcanization lapaʻau:
Ke hoʻohana ʻia ka vulcanization e like me nā mea anti-friction i nā huahana metallurgy pauka, ʻo nā bearings i hoʻokumu ʻia i ka aila i hoʻohana nui ʻia.Sintered aila-impregnated bearings (me ka graphite maʻiʻo o 1% -4%) i maʻalahi ka hana hana a me ka haʻahaʻa kumu kūʻai.I ka hihia o PV<18-25 kg·m/cm 2·sec, hiki iā ia ke hoʻololi i ke keleawe, babbitt alloy a me nā mea anti-friction ʻē aʻe.Eia nō naʻe, ma lalo o nā kūlana hana koʻikoʻi, e like me ke kiʻekiʻe o ka sliding wikiwiki ma ka friction surface a me ka ukana nui, e emi koke ke kūpaʻa a me ke ola o nā ʻāpana sintered.I mea e hoʻomaikaʻi ai i ka hana anti-friction o ka porous iron-based anti-friction parts, hoʻemi i ka coefficient o friction, a hoʻonui i ka mahana hana e hoʻonui ai i kāna hoʻohana ʻana, ʻo ka mālama vulcanization kahi ala kūpono e hoʻolaha.
Loaʻa i ka Sulfur a me ka hapa nui o nā sulfide kekahi mau waiwai lubricating.ʻO ka hao sulfide he lubricant paʻa maikaʻi, ʻoi aku ka maikaʻi ma lalo o nā kūlana friction maloʻo, ʻoi aku ka maikaʻi o ka hiki ʻana o ka hao sulfide.
ʻO nā huahana hoʻoheheʻe hao me ka hoʻohana ʻana i kāna pores capillary hiki ke hoʻopili ʻia me ka nui o ka sulfur.Ma hope o ka hoʻomehana ʻana, hiki i ka sulfur a me ka hao ma ka ʻili o nā pores ke hoʻohua i ka sulfide hao, i hoʻohele like ʻia i loko o ka huahana a pāʻani i ka lubrication maikaʻi ma ka ʻili friction A hiki ke hoʻomaikaʻi i ka hana ʻoki.Ma hope o ka vulcanization, ʻoluʻolu loa ka friction a me ka ʻoki ʻana i nā ʻili o nā huahana.
Ma hope o ka vulcanized ka hao sintered porous, ʻo ka hana koʻikoʻi ka loaʻa ʻana o nā waiwai friction maloʻo maikaʻi.He mea ʻoluʻolu ia ma lalo o nā kūlana hana ʻole o ka aila (ʻo ia hoʻi, ʻaʻole ʻae ʻia ka aila a ʻaʻole ʻaila ʻia), a maikaʻi ke kūʻē ʻana i ka hopu ʻana a hōʻemi i ke ʻano o ka gnawing shaft.Eia kekahi, ʻokoʻa nā ʻano friction o kēia mea mai nā mea anti-friction maʻamau.ʻO ka mea maʻamau, i ka piʻi ʻana o ke kaomi kikoʻī, ʻaʻole loli nui ka friction coefficient.Ke ʻoi aku ka nui o ke kaomi kikoʻī ma mua o kekahi waiwai, piʻi nui ka friction coefficient.Eia naʻe, ke emi iho nei ka heluna friction o ka hao sintered porous ma hope o ka hoʻomaʻamaʻa vulcanization me ka piʻi ʻana o kāna kaomi kikoʻī i kahi pae kaomi kikoʻī nui.He mea waiwai kēia o nā mea anti-friction.
Hiki ke hana malū ma lalo o 250°C ka mea i hoʻopaʻa ʻia i ka hao ma ka ʻaila-impregnated bearing ma hope o ka vulcanization.
Kaʻina Vulcanization:
He mea maʻalahi ke kaʻina hana o ka vulcanization a ʻaʻole pono i nā lako kūikawā.Penei ke kaʻina hana: e hoʻokomo i ka sulfur i loko o ka ipu hao a me ka wela a heheʻe.Ke hoʻomalu ʻia ka mahana ma 120-130 ℃, ʻoi aku ka maikaʻi o ka wai o ka sulfur i kēia manawa.Inā kiʻekiʻe loa ka mahana, ʻAʻole kūpono i ka impregnation.ʻO ka huahana sintered e hoʻopiliʻia e hoʻomaʻemaʻeʻia i ka 100-150 ° C, a laila e hoʻokomoʻia ka huahana i loko o ka hopena sulfur hoʻoheheʻeʻia no 3-20 mau minuke, a hoʻokomoʻia ka huahana i hoʻopauʻoleʻia no 25-30 mau minuke.Ma muli o ka mānoanoa o ka huahana, ka mānoanoa o ka pā a me ka nui o ka ho'okomo 'ana no ka ho'oholo 'ana i ka manawa kaiapuni.ʻOi aku ka liʻiliʻi o ka manawa hoʻoinu no ka haʻahaʻa haʻahaʻa a me ka mānoanoa pā lahilahi;kaʻina ʻēkoʻa.Ma hope o ka leaching, lawe ʻia ka huahana, a hoʻokahe ʻia ke koena sulfur.ʻO ka hope, e hoʻokomo i ka huahana impregnated i loko o ka umu, e pale iā ia me ka hydrogen a i ʻole ka lanahu, a hoʻomehana iā 700-720 ° C no 0.5 a 1 hola.I kēia manawa, hana ka sulfur i hoʻokomo ʻia me ka hao e hana i ka hao sulfide.No nā huahana me ka mānoanoa o 6 a 6.2 g/cm3, ʻo ka nui o ka sulfur ma kahi o 35 a 4% (pākēneka kaumaha).ʻO ka hoʻomoʻa ʻana a me ka hoʻomoʻa ʻana, ʻo ia ka hana ʻana i ka sulfur i loko o nā pores o ka ʻāpana i hao sulfide.
ʻO ka huahana sintered ma hope o ka vulcanization hiki ke mālama ʻia me ka ʻaila immersion a me ka hoʻopau ʻana.
Nā laʻana hoʻohana no ka mālama ʻana i ka vulcanization:
1. Hoʻokomo ʻia nā lima lima wili palaoa ma nā ʻaoʻao ʻelua o nā ʻōwili ʻelua, ʻehā mau pūʻulu.ʻO ke kaomi o ka ʻōwili he 280 kg, a ʻo ka wikiwiki he 700-1000 rpm (P=10 kg/cm2, V=2 m/sec).Ua lubricated ka pahu keleawe mua me ka maʻa aila.I kēia manawa ua hoʻololi ʻia e ka porous sintered iron me ka nui o 5.8 g/cm3 a me S maʻiʻo o 6.8%.Hiki ke ho'ohana 'ia ka mea ho'oma'ama'a mua ma kahi o ka mea ho'oma'ama'a mua.E hoʻokuʻu wale i kahi mau kulu o ka aila ma mua o ka hoʻokele a hana mau no 40 mau hola.Ma kahi o 40°C wale nō ka mahana o ka lima.;ʻO ka wili ʻana i 12,000 kg o ka palaoa, ke hana mau nei ka bushing.
2. ʻO ka roller cone drill he mea hana koʻikoʻi no ka wili ʻaila.Aia ka lima sliding shaft ma luna o ka ʻaila drill, aia ma lalo o ke kaomi nui (P=500 kgf/cm2, ka wikiwiki V=0.15m/sec.), a aia nā haʻalulu ikaika a me nā haʻalulu.
Ka manawa hoʻouna: Iulai-12-2021