SAE4340 Steel Round Bar ASTM4340 Steel Rod
Atụmatụ
Ihe nke 4340 ígwè mmanya bụ alloy structural ígwè.Dakọtara na German DIN ígwè ọkwa 36CrNiMo4, French NF ọkọlọtọ 40NCD3, Japanese JIS ọkọlọtọ SNCM439, British BS ọkọlọtọ 816M40, American SAE/ASTM4340, American UNS ọkọlọtọ G43400, China Standard 40CrNiMoA.
A maara SAE4340 dị ka alloy structural steel ma ọ bụ nchara mejupụtara.Nchara ahụ nwere nickel n'etiti 1.65 na 2.00, nke nwere ike dị elu, ike siri ike, ike siri ike, na nkwụsi ike megide ikpo oke ọkụ.Otú ọ dị, ọ nwere mmetụta dị elu na ntụpọ ọcha na iwe ọkụ.Ọdịmma ọgụgụ na-adịghị mma, na-achọ ikpo ọkụ dị elu tupu ịgbado ọkụ, mgbakasị ahụ mgbakasị ahụ mgbe ịgbado ọkụ, na iji mgbe iwe ọkụ gasịrị.
Ọkọlọtọ: ASTM A29/A29M-2012 ma ọ bụ SAE J404
Nkọwapụta
| Carbon C | 0.38-0.43 |
| Silicon Si | 0.15-0.35 |
| Manganese Mn | 0.60-0.80 |
| Sulfur S | ≤ 0.030 |
| Phosphorus P | ≤ 0.025 |
| Chromium Cr | 0.60-0.90 |
| Nickel | 1.65-2.00 |
| Ọla kọpa Ku | ≤ 0.025 |
| Molybdenum Mo | 0.20-0.30 |
Ngwa igwe
| Ike tensile σ b (MPa) | ≥980 |
| Ike mpụta σ s (MPa) | ≥835 |
| Ọnụego ndọtị δ 5 (%) | ≥12 |
| Mbelata mpaghara ψ (%) | ≥55 |
| Mmetụta ike Akv (J) | ≥ 78 |
| Mmetụta ike ike α kv (J/cm2) | ≥98 |
Nkọwa ọgwụgwọ okpomọkụ
Emenyụ na 850 ℃, mmanụ mma;Iwe na 600 ℃, mmiri dị mma, mma mmanu mmanu.
Ngwa
A na-ejikarị emepụta akụkụ ndị dị mkpa na ike dị elu na ezigbo plasticity, yana maka ịmepụta akụkụ dị mkpa nwere ọrụ pụrụ iche chọrọ mgbe ọgwụgwọ nitrating gasịrị:
- Igwe igwe dị arọ nke nwere ogwe ibu dị elu
- Osisi wheel nwere dayameta karịrị 250mm
-Ogwe rotor nke helikopta
-Ogwe turbine, agụba, na ihe nnyefe dị elu nke injin turbojet
- Crankshaft fasteners, gia, wdg.
ngwugwu
1.By bundles, onye ọ bụla ngwugwu arọ n'okpuru 3 tọn, maka obere mpụtadayameta gburugburu mmanya, nke ọ bụla ùkwù nwere 4 - 8 ígwè ibe.
2.20 ụkwụ akpa nwere akụkụ, ogologo n'okpuru 6000mm
3.40 ụkwụ akpa nwere akụkụ, ogologo n'okpuru 12000mm
4.By nnukwu arịa, ụgwọ ibu dị ala site na nnukwu ibu, na nnukwuEnweghị ike ibuba nha dị arọ n'ime arịa nwere ike ibupu site na nnukwu ibu
ngwugwu
Ntụkwasị obi ịdị mma
1. Kwụsie ike dị ka achọrọ
2. Nlereanya: Nlereanya dị.
3. Nnwale: Nnwale ịgba nnu nnu / ule tensile / Eddy current / Chemical mejupụtara ule dị ka arịrịọ ndị ahịa si dị.
4. Akwụkwọ: IATF16949, ISO9001, SGS wdg.
5. EN 10204 3.1 Asambodo
