| Kuumbwa Kwemakemikari |
| Steel Giredhi |
C |
Si |
Mn |
P |
S |
Cr |
Mo |
Cu |
| 35CrMo |
0.38～0.45% |
0.17～0.37% |
0.50～0.80% |
≤0.035% |
≤0.035% |
0.90～1.20% |
0.15～0.25% |
≤0.30% |
Mechanical properties
| Goho simba σs/MPa (>=) |
Kusimba simba σb/MPa (>=) |
Elongation
δ5/% (>=) |
Kuderedzwa kwe
nzvimbo ψ/% (>=) |
Impact inotora simba Aku2/J (>=) |
Kuoma HBS
100/3000 max |
| ≥930(95) |
≥1080(110) |
≥12 |
≥45 |
≥78(8) |
≤217HB |
Kuti uwedzere hupenyu hwekufa kune dzinopfuura 800,000 dzinofa nguva, iyo pre-yakaomeswa simbi inogona kuomeswa nekudzima uye yakaderera tembiricha tempering. Paunenge uchidzima, preheat pa500-600 ℃ kwemaawa 2-4, uye wozoichengeta pa850-880 ℃ kweimwe nguva (inenge maawa maviri), wozoisa mumafuta uye inotonhorera kusvika 50-100 ℃ uye kutonhora kwemhepo, kuoma kunogona kusvika makumi mashanu mushure mekudzima -52HRC, kuitira kudzivirira kutsemuka, 200 ℃ yakaderera tembiricha tempering kurapwa kunofanira kuitwa nekukurumidza. Mushure mekupisa, kuoma kunogona kuchengetedzwa pamusoro pe48HRC.
42CrMo Steel Heat Treatment
Annealing
Kupinda mu760±10℃, muchoto kutonhora kusvika 400℃ ipapo kutonhora kwemhepo.
Normalizing
Normalizing mu760±10℃, kutonhora kwemhepo mushure mekubuda muchoto.
Zvinyorwa Nezve Kudzima uye Kupisa Kurapa
Inofanirwa kuterera kune tembiricha yemvura inotonhorera. Uye unofanirwa kuve nechokwadi kuti hapana kusvibiswa kwemafuta kana kumwe kusvibiswa. Kana zvisina kudaro, kuoma kwesimbi kuchave kusina kukwana kana kunze kwechiyero.
Kudzima uye kupisa kwebillet simbi zvinhu pasina kugadzirisa, zvino ichawana isina-uniform kuomarara. Saka kugadzirisa kwekugadzira kana kugaya kunodiwa pamberi peQ+T.
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