Haɗin Sinadari (%) | ||||||||
Karfe daraja | C | Si | Mn | P | S | Cr | Ni | Ku |
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 |
Ƙarfin Haɓaka σs /MPa (>=) | Ƙarfin ƙarfi σb /MPa (>=) | Tsawaitawa δ5 /% (>>) |
Ragewar yanki ψ/% (>=) |
Tasiri tsoma makamashi Aku2/J (>=) | Hardness HBS 100 /3000 max |
≧540 | ≧835 | ≧10 | ≧40 | ≧47 | ≦179 |
Daidai Da 20Cr Alloy Tsarin Karfe
Amurka | Jamus | China | Japan | Faransa | Ingila | Italiya | Poland | ISO | Austria | Sweden | Spain |
ASTM/AISI/UNS/SAE | DIN, WNr | GB | JIS | AFNOR | BS | UNI | PN | ISO | ONORM | SS | UNE |
5120 / G51200 | 20Cr4 / 1.7027 | 20Cr | Saukewa: SC420 | 18c3 | 527A20 | 20Cr4 |
Maganin zafi mai alaƙa
A hankali mai zafi zuwa 850 ℃ kuma ba da izinin isa lokaci, bari karfe ya zama mai zafi sosai, Sa'an nan kuma kwantar da hankali a cikin tanderun. Karfe na 20Cr zai sami MAX 250 HB (Taurin Brinell).
Da farko quenching mai zafi a hankali zuwa 880 ° C, sannan bayan isasshen ruwa a wannan yanayin zafi a cikin mai ko ruwa. Haushi da zaran kayan aikin sun kai zafin dakin. Na biyu quenching zafi zuwa 780-820 ° C, sa'an nan quenching a cikin mai ko ruwa.
Yi zafi zuwa 20 ° C, sannan sanyi a cikin ruwa ko mai. al'ada taurin kai 179HB Min.
Aikace-aikace
GB 20Cr karfe ana amfani dashi sosai don aikace-aikace iri-iri a cikin masana'antar kera motoci da injiniyoyi don masu riƙe kayan aiki da sauran abubuwan da aka gyara. Mafi yawa ana amfani da shi wajen kera buƙatun ya fi girma, tsananin lalacewa ta fuskar zuciya, ƙarƙashin sashe ƙarƙashin 30 mm ko ƙananan sassan carburized na hadaddun sifa da kaya (mai kashe mai), kamar: kayan watsawa, shaft gear, CAM, tsutsa, piston fil, clutch clutch, da dai sauransu; Domin zafi magani nakasawa da kuma high abrasion juriya sassa, ya zama high mita surface quenching bayan carburizing, kamar modules ne kasa da 3 na kaya, shaft, spline shaft, da dai sauransu Wannan karfe za a iya amfani da a cikin quenched da tempered jihar da kuma Ana amfani da shi wajen kera manyan da matsakaita a ƙarƙashin tasirin tasiri a cikin sassan aikinta, irin wannan ƙarfe kuma ana iya amfani da shi azaman ƙarancin ƙarancin ƙarfe na martensite karfe quenching, yana ƙara haɓaka ƙarfin amfanin ƙarfe da ƙarfin ƙarfi ya karu (kusan 1.5 ~ 1.7 sau). Aikace-aikace na yau da kullun kamar jikin bawul, famfo da kayan aiki, Shaft, babban nauyin dabaran, kusoshi, kusoshi mai kai biyu, gears, da sauransu.
Girman yau da kullun da Haƙuri
Karfe zagaye mashaya: Diamita Ø 5mm - 3000mm
Farantin karfe: kauri 5mm - 3000mm x Nisa 100mm - 3500mm
Karfe Hexagonal Bar: Hex 5mm - 105mm
Wasu 20Cr ba su ƙayyadadden girman ba, pls tuntuɓi kwararrun ƙungiyar tallace-tallacen mu.
Gudanarwa
GB 20Cr gami karfe zagaye mashaya da lebur sassan za a iya yanke zuwa girman da kuke bukata. 20Cr gami karfe ƙasa mashaya kuma za a iya kawota, samar da wani high quality kayan aiki karfe daidaici ƙasa kayan aiki karfe mashaya to your bukata tolerances. GB 20Cr karfe kuma ana samunsa azaman Ground Flat Stock / Gauge Plate, a cikin daidaitattun masu girma dabam da marasa inganci.