Alloy Contents o ka Papa Moly Chrome
ʻO ka papa moly Chrome ma lalo o ka ASTM A387 i nā māka serveral i loaʻa nā ʻokoʻa like ʻole e like me lalo, ʻo Gr 11, 22, 5, 9 a me 91 nā māka hoʻohana maʻamau.
Ma waho aʻe o 21L, 22L a me 91, loaʻa kēlā me kēia papa i ʻelua papa o nā pae ikaika tensile e like me ka wehewehe ʻana i nā papa koi tensile. ʻO ka papa 21L a me 22L wale nō ka Papa 1, a ʻo ka Papa 91 wale nō ka Papa2.
Papa | Maʻiʻo Chromium Nominal, % | Nominal Molybdenum Content, % |
2 | 0.50 | 0.50 |
12 | 1.00 | 0.50 |
11 | 1.25 | 0.50 |
22, 22L | 2.25 | 1.00 |
21, 21L | 3.00 | 1.00 |
5 | 5.00 | 0.50 |
9 | 9.00 | 1.00 |
91 | 9.00 | 1.00 |
Nā Kūlana i kuhikuhi ʻia no ka ASTM A387 Alloy Steel Plate ASTM
A20/A20M: Nā koi maʻamau no nā pā ipu kaomi.
A370: Hōʻike hoʻāʻo no nā waiwai mechanical o ke kila
A435/A435M: No ka nānā ʻana i ka ultrasonic beam pololei o nā papa kila.
A577/A577M: No ka ʻike ʻana i nā kuʻekuʻe kani ultrasonic i nā papa kila.
A578/A578M: No ka nānā ʻana i ka beam UT pololei o nā papa kila i ʻōwili ʻia i nā noi kūikawā.
A1017/A1017M: ʻO ka kikoʻī no nā pā pahu kaomi o ke kila kila, chromium-molybdenum-tungsten.
Hōʻike AWS
A5.5/A5.5M: Haʻahaʻa hao hao electrodes no ka pale metala arc kuʻihao.
A5.23/A5.23M: Haʻahaʻa alloy kila electrodes no fulxes no submerged arc kuʻihao.
A5.28/A5.28M: No ke kinoea pale arc wiliwili.
A5.29/A5.29M: No ka hoʻoheheʻe ʻia ʻana o ka flux cored arc.
Hoʻomaʻamaʻa wela no A387 Chrom Moly Alloy Steel Plate
E pepehi ʻia ʻo Chrome moly alloy steel plate ma lalo o ASTM A387 i ke kila, me ka thermally mālama ʻia e ka annealing, normarlizing a me ka hoʻoulu ʻana. A i ʻole inā ʻae ʻia e ka mea kūʻai aku, e hoʻomaʻamaʻa wikiwiki ʻia mai ka wela austenitizing ma o ka puhi ʻana i ka ea a i ʻole ka hoʻopau ʻana i ka wai, a ukali ʻia e ka hoʻomaʻamaʻa ʻana, ʻo nā mahana wela haʻahaʻa loa e like me ka papa ma lalo:
Papa | Mahana, °F [°C] |
2, 12 a me 11 | 1150 [620] |
22, 22L, 21, 21L a me 9 | 1250 [675] |
5 | 1300 [705] |
E mālama ʻia nā pā kila kila ma ka papa 91 ma o ka hoʻomaʻamaʻa ʻana a me ka hoʻomaʻamaʻa ʻana a i ʻole ka hoʻolili ʻana i ka ea a i ʻole ka hoʻopau ʻana i ka wai, a ukali ʻia e ka hoʻomaʻamaʻa. Pono e hoʻopaʻa ʻia nā papa papa 91 ma 1900 a 1975°F [1040 a 1080°C] a e hoʻomāmā ʻia ma 1350 a 1470°F [730 a 800°C]
ʻO ka papa 5, 9, 21, 21L, 22, 22L, a me 91 mau papa i kauoha ʻia me ka mālama ʻole ʻana i ka wela e ka papa ma luna, e hoʻopau ʻia i loko o ke kūlana hoʻomaha a i hoʻopili ʻia paha.