Halabuurka Kiimikada (%) | ||||||||
Heerka Birta | C | Si | Mn | P | S | Cr | Ni | Cu |
20Cr | 0.18~0.24 | 0.17~0.37 | 0.50~0.80 | ≤0.035 | ≤0.035 | 0.70~1.00 | ≤0.030 | ≤0.30 |
Awood soo saarista σs /MPa (>=) | Xoog xajin σb /MPa (>=) | Dheeraynta δ5 /% (>>) |
Dhimista aagga ψ /% (>=) |
Saamaynta tamarta nuugista Aku2 /J (>=) | Hardness HBS 100 /3000 max |
≧540 | ≧835 | ≧10 | ≧40 | ≧47 | ≦179 |
U dhiganta 20Cr Alloy Structure Steel
USA | Jarmalka | Shiinaha | Japan | Faransiiska | England | Talyaaniga | Poland | ISO | Awstariya | Iswiidhan | Isbayn |
ASTM/AISI/UNS/SAE | DIN,WNr | GB | JIS | AFNOR | BS | UNI | PN | ISO | ONORM | SS | UNE |
5120 / G51200 | 20Cr4 / 1.7027 | 20Cr | SCr420 | 18C3 | 527A20 | 20Cr4 |
Daaweynta kulaylka La Xiriira
Si tartiib ah u kuleyl ilaa 850 ℃ una ogolow waqtiyo ku filan, u ogolow birta in si fiican loo kululeeyo, Kadibna si tartiib ah ugu qabooji foornada. Birta aluminiumka ah ee 20Cr waxay heli doontaa MAX 250 HB ( hardness Brinell )
Marka hore si tartiib ah u demin ilaa 880 ° C, Ka dib marka la qooyay ku filan heerkulkan demin saliid ama biyo. Xanaaqo isla marka qalabku gaaro heerkulka qolka. Kuleylka labaad ee deminta ilaa 780-820 ° C, ka dibna ku daminaya saliid ama biyo.
Kuleyl ilaa 20C, ka dibna ku qabooji biyo ama saliid. adkaanta dhalmada caadiga ah 179HB Min.
Codsiyada
GB 20Cr steel waxaa si weyn loogu isticmaalaa codsiyo kala duwan oo lagu isticmaalo warshadaha baabuurta iyo injineernimada ee qalabka haysta iyo qaybaha kale ee sida. Inta badan loo isticmaalo soo saarista baahida ayaa ka sareysa, xoojinta xirashada dusha sare ee wadnaha, oo hoos timaada qaybta 30 mm ama qaybo yaryar oo carburized ah oo qaabka adag iyo culeyska (saliida deminta), sida: qalabka gudbinta, usheeda dhexe, CAM, dirxi, piston biin, xajin cidiyaha, iwm; Wixii qallafsanaanta daawaynta kulaylka iyo qaybo caabbinta abrasion sare, waa in ay ahaataa deminta soo noqnoqda sare ee dusha sare ka dib markii carburizing, sida modules waa ka yar 3 ee marsho, usheeda dhexe, usheeda dhexe spline, iwm steel Tani waxaa loo isticmaali karaa in la demiyo iyo gobolka dabcay iyo loo isticmaalo wax soo saarka ee waaweyn iyo kuwa dhexdhexaad ah hoos load saamayn in qaybaha shaqada iyada, noocan oo kale ah birta sidoo kale loo isticmaali karaa sida a demin birta martensite carbon hooseeyo, sii kordhinta xoogga dhalidda birta iyo xoog adkaysi kordhay (qiyaastii 1.5 ~ 1.7 jeer). Codsiyada caadiga ah sida mashiinnada waalka, bambooyinka iyo qalabyada, Shaft, culeyska sare ee taayirrada, boolal, boolal laba madax leh, gears, iwm
Cabbirka joogtada ah iyo Dulqaadashada
Bir wareeg ah: Dhexroor Ø 5mm - 3000mm
Saxanka birta: dhumucdiisuna waa 5mm - 3000mm x ballac 100mm - 3500mm
Birta laba geesoodka ah: Hex 5mm - 105mm
Kuwa kale 20Cr ma aysan cayimin cabbirkooda, pls la xidhiidh kooxdayada iibka ah ee khibradda u leh.
Habaynta
GB 20Cr daawaha birta wareegsan ee birta ah iyo qaybo siman ayaa lagu gooyn karaa cabbirradaada loo baahan yahay. 20Cr daawaha birta dhulka ee birta ah sidoo kale waa la keeni karaa, iyadoo la siinayo qalab tayo sare leh birta saxda ah ee birta birta ah ee dulqaadkaaga loo baahan yahay. GB 20Cr steel waxa kale oo loo heli karaa sida Ground Flat Stock / Gauge Plate, cabbirro caadi ah iyo kuwo aan caadi ahayn.