Zvakanakira kutonhora zvakaumbwa zvakasarudzika
Yakatonhora yakaumbwa simbi inogadzirwa nekukotama uye kuumba masheya mashitsi kana marangi pamhepo tembiricha isina kushandiswa kwekupisa. Maitiro acho anogadzira yakasimba, yakanyanya kusimba zvinhu pane simbi inopisa. Icho chibato chinotonhora ichi chinopa akati wandei zvakanakira kana akabatanidzwa pamwechete kuti vagadzire zvikamu zvekugadzira.
Standard | Giredhi reSimbi | Chemical Composition | Tensile Properties | Charpy Impact bvunzo uye kudonhedza uremu kubvira bvunzo | ||||||||||||||
C | Si | Mn | P | S | V | Nb | Ti | Cev4) (%) | RT0.5 MPA Yakuru Simba | RM MPA Tenseile Simba | Rt0.5 / rm | (L0 = 5.65 × s0) elongation a% | ||||||
Max | Max | Max | Max | Max | Max | Max | Max | Zvimwe | Max | min | Max | min | Max | Max | min | |||
L245MB | 0.22 | 0.45 | 1.2 | 0.025 | 0.15 | 0.05 | 0.05 | 0.04 | 1) | 0.4 | 245 | 450 | 415 | 760 | 0.93 | 22 | Charpy Impact bvunzo: kukanganisa kunongedza simba remuviri uye weld seam ichaedzwa sezvinodiwa mumwero wekutanga. Kuti uwane ruzivo, ona iyo yekutanga standard. Drop uremu kubvira bvunzo: Inesarudzo yekuzviratidza nzvimbo | |
GB / T9711-2011 (PSL2) | L290MB | 0.22 | 0.45 | 1.3 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | 1) | 0.4 | 290 | 495 | 415 | 21 | |||
L320MB | 0.22 | 0.45 | 1.3 | 0.025 | 0.015 | 0.05 | 0.05 | 0.04 | 1) | 0.41 | 320 | 500 | 430 | 21 | ||||
L360MB | 0.22 | 0.45 | 1.4 | 0.025 | 0.015 | 1) | 0.41 | 360 | 530 | 460 | 20 | |||||||
L390MB | 0.22 | 0.45 | 1.4 | 0.025 | 0.15 | 1) | 0.41 | 390 | 545 | 490 | 20 | |||||||
L4111MB | 0.12 | 0.45 | 1.6 | 0.025 | 0.015 | 1) 2) 3 | 0.42 | 415 | 565 | 520 | 18 | |||||||
L450MB | 0.12 | 0.45 | 1.6 | 0.025 | 0.015 | 1) 2) 3 | 0.43 | 450 | 600 | 535 | 18 | |||||||
L485MB | 0.12 | 0.45 | 1.7 | 0.025 | 0.015 | 1) 2) 3 | 0.43 | 485 | 635 | 570 | 18 | |||||||
L555MB | 0.12 | 0.45 | 1.85 | 0.025 | 0.015 | 1) 2) 3 | Kutaurirana | 555 | 705 | 625 | 825 | 0.95 | 18 | |||||
ONA: | ||||||||||||||||||
1) 0.015 ≤ Altot <0,060; n ± 0.012; Ai-n ≥ 2-1; CU × 0.30; CR ≤ 0.30; mo ≤ 0.130 | ||||||||||||||||||
2) v + nb + ti ≤ 0,015% | ||||||||||||||||||
3) Kune ese mamakisi eganda, mo anga ≤ 0.35%, pasi pechibvumirano. | ||||||||||||||||||
MN Cr + mo + v Cu + ni4) CEV = C + 6 + 5 + 5 |
Chimwe chezvakanakisa zvakanakira zvekutonhora akaumbwa akaumbwa Simbi ndiyo yakakwirira kwazvo simba-kune-uremu chiyero. Izvi zvinoreva kuti inopa simba repamusoro apo kuve rakareruka, zvichiita kuti zvive nyore kubata nekutakura panguva yekuvaka. Pamusoro pezvo, simba rakanyanya rekutonhora-rakaumbwa simbi rinogonesa uye rakanyatsogadzira marefu anowedzera nzvimbo uye kuderedza kushandiswa kwezvinhu.
Chimwe chinhu chakakosha chekutonhora-chakaumbwa chakarongeka simbi ndeyekufanana kwayo uye kusawirirana. Maitiro ekutonhora ekuumba anovimbisa kuti iyo Simbi inochengetedza michero inoenderana nemidziyo yese, zvichikonzera kufungidzira uye kwakavimbika kuita. Uku kuenderana kwakakosha kuti uone kutendeka kwechimiro uye kuchengetedzeka kwekuvakwa kwekupedzisira.

Kuwedzera kune simba uye kusimba, kutonhora kwakaumbwa kwakarongedzwa simbi inopa simba rakanyanya kukura uye kunyatsojeka. Maitiro ekutonhora ekuumba anobvumira kuti tigare tolerances uye anoumbwa kuumbwa, anoverengera zvikamu zvekumira zvinokwana pamwe chete zvisina musoro panguva yegungano. Iyi mwero wekunyatso tsoropodza kuzadzisa yakakwirira-mhando, inoratidzika inonakidza chigadzirwa.
Pamusoro pezvo, kutonhora kwakaumbwa kwakarongedzwa simbi yemhando yepamusoro uye kunogona kugadziriswa kusangana nezvakanyanya basa zvinodiwa. Inogona kuve yakaumbwa nyore nyore uye yakaumbwa mune dzakasiyana-siyana dzinopokana uye kugadziriswa, kubvumira kusikwa kwezvinhu zvakaoma zvemari. Izvi zvinowananisa zvinoita kuti zviite zvakakodzera kune dzakasiyana siyana dzekushandisa kubva pakuvakwa kwekugara kune zvivakwa zveindasitiri.
Iko kushandiswa kwekutonhora kwakaumbwa simbi yemhando yemhando zvakare kunoitawo kuti zviitwe zviito zvekuvaka. Yayo yakaremara midziyo inoderedza mutoro wakawanda pane hwaro uye rutsigiro rwechimiro, zvichikonzera mune zvinogona kubhenekodha mari uye mabhenefiti emunharaunda. Pamusoro pezvo, kudzokorora kwesimbi kunoita kuti isarudzo yemamiriro ekunze yemabasa ekuvaka.
Mukupfupikisa, kutonhora kwakaumbwa kwakarongedzwa simbi yemhando inopa zvakawanda zvinobatsira izvo zvinoita sarudzo inokwezva yemapurojekiti ekuvaka. Simba rayo rakakwirira-kurema ratio, kuwirirana, kunyatsoitika, kuenderana uye kusimba uye kwekutsigira kunoita kuti ive chinhu chakakosha chekugadzira nzvimbo dzakasimba, dzakashanda. Sezvo indasitiri yekuvaka ichiramba ichishanduka, kutonhora kwakaumbwa simbi yemhando yekuumbwa kuchaita basa rakakosha mukuumba zvivakwa uye zvivakwa zveramangwana.