Nā ʻano o nā noho carbide

ʻO nā noho tungsten carbide, ʻo ia nā mea hoʻopaʻa paʻa o nā ʻōnaehana valve, noho i kahi kūlana koʻikoʻi i ka ʻoihana ʻoihana ma muli o kā lākou mau hiʻohiʻona hana. Me kāna ʻano mea ʻokoʻa, tungsten carbide, hōʻike ka noho i ka lōʻihi a me ka hoʻololi ʻana, e lilo ia i koho mua no nā noi ʻoihana.

ʻO ka mea mua, ʻike ʻia nā noho tungsten carbide no ko lākou paʻakikī kiʻekiʻe a me ke kūpaʻa ʻana. I ke kaomi kiʻekiʻe, kiʻekiʻe-wikiwiki kahe ʻana o ka media, paʻakikī pinepine nā mea noho kuʻuna i ka pale ʻana i ka wā lōʻihi a me ka ʻaʻahu ʻana, ʻoiai hiki i ka tungsten carbide ke pale maikaʻi i ka erosion o kēia mau kūlana koʻikoʻi ma muli o kāna mau waiwai kino maikaʻi. He mea maikaʻi kēia i nā noho carbide ma ke ʻano o ka hoʻonui ʻana i ke ola valve a me ka hōʻemi ʻana i nā kumukūʻai mālama.

ʻO ka lua, ʻo ka pale ʻana i ka corrosion kahi mea koʻikoʻi o ka noho carbide. I loko o ka kemika, ka aila a me nā ʻoihana ʻē aʻe, ʻo ke kahe e kahe ana i ka pipeline he mea ʻino loa ia, kahi e kau ai i mua i nā koi kiʻekiʻe loa no ka mea noho valve. Me kona kūpaʻa kemika maikaʻi loa, hiki i ka tungsten carbide ke hana paʻa no ka manawa lōʻihi i kēia mau wahi paʻakikī me ka ʻole o ka corrosion a me ka pōʻino, e hōʻoia ana i ka palekana a me ka hilinaʻi o ka ʻōnaehana valve.

Eia kekahi, he kū'ē maikaʻi ka noho carbide i nā wela kiʻekiʻe. I loko o nā kaʻina hana ʻoihana he nui, hiki ke piʻi nui ka mahana o ka waena, kahi e hoʻohālikelike ai i ka pale wela o ka mea noho. Me kona helu hoʻoheheʻe kiʻekiʻe a me ke kūpaʻa wela kiʻekiʻe, hiki i ka carbide cemented ke mālama i ka hana paʻa i ke kaiapuni kiʻekiʻe, me ka ʻole o ka deformation a me ka haki ʻana, e hōʻoia ana i ka hana maʻamau o ka valve ma lalo o nā kūlana hana kiʻekiʻe.