Paʻa kila pale ʻaʻahu

ʻO nā pā kila kūʻokoʻa ʻaʻahu me ka pā hao kalapona haʻahaʻa a me kahi ʻāpana pale ʻaʻahu ʻole, me ka ʻāpana pale ʻaʻahu ʻaʻahu ma ke ʻano he 1/3 a 1/2 o ka nui o ka mānoanoa. I ka wā o ka hana ʻana, hāʻawi ka mea kumu i nā waiwai piha e like me ka ikaika, ka paʻakikī, a me ka ductility e kūʻē i nā ikaika o waho, ʻoiai ke hāʻawi ʻia ka pale ʻaʻahu paʻa i ka lole i kūpono i nā kūlana hana kikoʻī.

Hoʻopaʻa metala ʻia ke ʻano paʻa paʻa a me ka mea kumu. Me ka hoʻohana ʻana i nā mea hana kūikawā a me kahi kaʻina hana kuʻi ʻana, paʻakikī kiʻekiʻe, pale ponoʻī i ka uea hoʻoheheʻe ʻia i ka mea kumu. Hiki i ka papa hoʻohui ke hoʻokahi, ʻelua, a i ʻole nā ​​papa he nui. Ma muli o ke ʻano like ʻole o ka alloy shrinkage ratio, ulu ʻia nā māwae transverse like ʻole i ka wā o ka lamination, kahi hōʻailona o nā pā kila pale.

Hoʻokumu mua ʻia ka papa hoʻopaʻa paʻa i ka chromium alloy, me nā mea hoʻohui like ʻole e like me ka manganese, molybdenum, niobium, a me ka nickel i hoʻohui ʻia. ʻO nā carbide i loko o ka hoʻolālā metallographic he fibrous, me nā fibers e kū pono ana i ka ʻili. Hiki ke hiki i ka microhardness carbide ma luna o HV 1700-2000, a hiki i ka paʻakikī o ka honua ke hiki i ka HRC 58-62. Paʻa loa nā carbide Alloy i nā mahana kiʻekiʻe, e mālama ana i ka paʻakikī kiʻekiʻe a me ke kūpaʻa oxidation maikaʻi loa, e ʻae ai i ka hana holoʻokoʻa i loko o nā mahana a hiki i 500 ° C.

Hiki ke ʻike ʻia ka papa ʻaʻahu i nā hiʻohiʻona haiki (2.5-3.5mm) a ākea paha (8-12mm), a me nā hiʻohiʻona curved (S a me W). Hoʻokumu mua ʻia me nā chromium alloys, loaʻa i kēia mau ʻāpana he manganese, molybdenum, niobium, nickel, a me ka boron. Hoʻokaʻawale ʻia nā carbide ma kahi ʻano fibrous i ka hoʻolālā metallographic, me nā fibers e holo pololei ana i ka ʻili. Me kahi carbide maʻiʻo o 40-60%, hiki i ka microhardness ke piʻi ma luna o HV1700, a hiki i ka paʻakikī o ka ʻili ke hiki i ka HRC58-62. Hoʻokaʻawale nui ʻia nā papa kila pale lole i ʻekolu mau ʻāpana: ke kumu nui, ka hopena a me ka pale wela kiʻekiʻe. Hiki ke liʻiliʻi ka mānoanoa a pau o nā pā kila e like me ka 5.5 (2.5+3) a me ka mānoanoa o 30 (15+15) mm. Hiki ke ʻōwili ʻia nā pā kila a ʻaʻahu i loko o nā paipu pale ʻaʻahu me ka liʻiliʻi o ke anawaena o DN200, a hiki ke hana ʻia i nā kuʻekuʻe wāwae ʻaʻahu, nā lole pale a me nā mea hōʻemi pale pale.