420J1 420J2 igwe anaghị agba nchara warara
Nkọwa dị mkpirikpi:
420J1 na 420J2 igwe anaghị agba nchara ibe bụ abụọ nkịtị ụdị igwe anaghị agba nchara ihe na nke martensitic igwe anaghị agba nchara usoro. Ha nwere ụfọdụ ọdịiche dị na kemikal mejupụtara na njirimara. Nke a bụ nkọwa nkenke nke ọ bụla:
1. 420J1 igwe anaghị agba nchara: 420J1 bụ obere carbon igwe anaghị agba nchara na elu ike na ike. Ngwakọta kemịkalụ ya na-agụnyekarị 0.16-0.25% carbon, ihe dịka 1% chromium, na obere molybdenum. 420J1 na-enye ezigbo nguzogide corrosion, ịrụ ọrụ ịkpụ, na ihe ndị na-egweri. A na-ejikarị ya eme mma, ngwa ịwa ahụ, akụkụ igwe, na ụfọdụ ngwa na-adịghị eyi.
2. 420J2 igwe anaghị agba nchara warara: 420J2 bụ a ọkara-carbon igwe anaghị agba nchara na elu ike ike na-eyi na-eguzogide. Ngwakọta kemịkalụ ya na-enwekarị ihe dịka 0.26-0.35% carbon na ihe dịka 1% chromium. 420J2 nwere ọdịnaya carbon dị elu ma e jiri ya tụnyere 420J1, na-eme ka ike sie ike na ịrụ ọrụ ịkpụ. A na-ejikarị ya eme ihe maka imepụta mma, agụba, ngwa ịwa ahụ, isi iyi, na akụkụ ụfọdụ igwe.
| Nkọwa nke 420J1 420J2igwe anaghị agba nchara ibe: |
| Nkọwapụta | ASTM A240 / ASME SA240 |
| Ọkwa | 321,321H,420J1, 420J2 430, 439, 441, 444 |
| Obosara | 8-600 mm |
| Ọkpụrụkpụ | 0.09-6.0mm |
| Nkà na ụzụ | Na-ekpo ọkụ na-ekpo ọkụ, oyi na-atụ |
| Elu | 2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror |
| Ụdị | Ihe mkpuchi, foils, Rolls, Strip, Flat, wdg. |
| Ndidi | +/-0.005-+/-0.3mm |
| Igwe anaghị agba nchara420J1 420J2Mpempe akwụkwọ nhata akara ule |
| Ọkọlọtọ | Ọrụ NR. | UNS | EN | BS | AFNOR | SIS | JIS | AISI |
| SS 420J1 | 1.4021 | S42010 | X20Cr13 | 420S29 | Z20C13 | 2303 | SUS420J1 | 420L |
| SS 420J2 | 1.4028 | S42000 | X20Cr13 | 420S37 | Z20C13 | 2304 | SUS420J2 | 420M |
| Njirimara chemical nke SS 420J1 / 420J2 Strips: |
| Ọkwa | C | Si | Mn | P | S | Cr |
| 420J1 | 0.16-0.25 kacha | 1.0 kacha | 1.0 kacha | 0.04 kacha | 0.03 kacha | 12.00-14.00 |
| 420J2 | 0.26-0.40 kacha | 1.0 kacha | 1.0 kacha | 0.04 kacha | 0.03 kacha | 12.00-14.00 |
| Njirimara akụrụngwa nke ibe SS 420J1/420J2: |
| Rm – ike tensile (MPa) (+QT) | 650-950 |
| Rp0.2 0.2% ike ihe akaebe (MPa) (+QT) | 450-600 |
| KV – Mmetụta ike (J) longitud., (+QT) | +20°20-25 |
| A – Min. elongation na mgbaji (%) (+QT) | 10-12 |
| Isi ike nke Vickers (HV): (+A) | 190-240 |
| Vickers ike ike (HV): (+QT) | 480-520 |
| Isi ike brinell (HB): (+A)) | 230 |
| Nkwenye nke eriri 420J1/420J2: |
| Ọkpụrụkpụ mm | Nkịtị ziri ezi mm | Oke ziri ezi mm |
| ≥0.01- <0.03 | ±0.002 | - |
| ≥0.03- <0.05 | ±0.003 | - |
| ≥0.05- <0.10 | ±0.006 | ±0.004 |
| ≥0.10- <0.25 | ±0.010 | ±0.006 |
| ≥0.25- <0.40 | ±0.014 | ±0.008 |
| ≥0.40- <0.60 | ±0.020 | ±0.010 |
| ≥0.60- <0.80 | ±0.025 | ±0.015 |
| ≥0.80- <1.0 | ±0.030 | ±0.020 |
| ≥1.0- <1.25 | ±0.040 | ±0.025 |
| ≥1.25- <1.50 | ±0.050 | ±0.030 |
| Ihe kpatara ịhọrọ anyị: |
1. Ị nwere ike nweta ihe zuru oke dịka ihe ị chọrọ na ọ dịkarịa ala ọnụahịa.
2. Anyị na-enyekwa Reworks, FOB, CFR, CIF, na ọnụ ụzọ nnyefe ọnụ ụzọ. Anyị na-atụ aro ka ịme azụmahịa maka mbupu nke ga-adị oke ọnụ ahịa.
3. Ihe anyị na-enye bụ nkwenye kpamkpam, site na akwụkwọ nyocha nke akụrụngwa ruo na nkwupụta akụkụ ikpeazụ. (Akụkọ ga-egosi na achọrọ)
4. e kwere nkwa inye nzaghachi n'ime awa 24 (na-abụkarị n'otu elekere)
5. Ị nwere ike nweta ngwaahịa ọzọ, igwe ihe nnyefe na ibelata n'ichepụta oge.
6. Anyị raara onwe anyị nye ndị ahịa anyị kpamkpam. Ọ bụrụ na ọ gaghị ekwe omume imezu ihe ị chọrọ mgbe ị nyochachara nhọrọ niile, anyị agaghị eduhie gị site n'ịkwe nkwa ụgha nke ga-eme ka ndị ahịa nwee mmekọrịta dị mma.
| Nkwenye ịdịmma nke SAKY STEEL (gụnyere ma mbibi na nke anaghị emebi emebi) |
1. Nleba anya akụkụ
2. Mechanical nyochaa dị ka tensile, elongation na mbenata nke ebe.
3. Mmetụta mmetụta
4. Nyocha nyocha nke kemịkalụ
5. Nnwale ike ike
6. Nnwale nchedo pitting
7. Nnwale penetrant
8. Nnwale corrosion intergranular
9. Nnwale siri ike
10. Metallography nnwale nnwale
| Nkwakọ ngwaahịa |
1. Nkwakọ ngwaahịa dị ezigbo mkpa karịsịa n'ihe gbasara mbupu mba ofesi nke mbupu na-agafe na ọwa dị iche iche iji ruo ebe kachasị elu, yabụ anyị na-etinye nchegbu pụrụ iche gbasara nkwakọ ngwaahịa.
2. Saky ígwè si mkpọ anyị ngwongwo n'ọtụtụ ụzọ dabere na ngwaahịa. Anyị na-akwakọ ngwaahịa anyị n'ọtụtụ ụzọ, dị ka,
