ng>W6Mo5Cr4V2高速鋼ng> ng> ng> ng>ng>W6Mo5Cr4V2ng>為鎢鉬系通用高速鋼的代表鋼號。該鋼具有碳化物細小均勻、韌性高、熱塑性好等優點。由於資源與價格關系,許多國傢以W6Mo5Cr4V2鋼取代W18Cr4V而成為高速鋼的主要鋼號。W6Mo5Cr4V2高速鋼韌性、耐磨性、熱塑性均優W18Cr4V,而硬度、紅硬性、高溫硬度與W18Cr4V相當,因此W6Mo5Cr4V2高速鋼除用於制造各種類型一般工具外,還可制作大型及熱塑成型刀具。由於W6Mo5Cr4V2鋼強度高、耐磨性好,因而又可制作高負荷下耐磨損的零件,如冷擠壓模具等,但此時必須適當降低淬火溫度以滿足強度及韌性的要求。W6Mo5Cr4V2高速鋼易於氧化脫碳,在熱加工及熱處理時應加以註意。ng> ng> ng> ng>W6Mo5Cr4V2化學成分:ng> ng> ng>ng>碳 C :0.80~0.90(允許偏差:±0.01)ng> ng>矽 Si:0.20~0.45(允許偏差:±0.05)ng> ng>錳 Mn:0.15~0.40(允許偏差:+0.04)ng> ng>硫 S :≤0.030磷ng> ng>P :≤0.030 ng> ng>鉻 Cr:3.80~4.40(允許偏差:±0.05)ng> ng>鎳 Ni:允許殘餘含量≤0.30 ng> ng>銅 Cu:允許殘餘含量≤0.25ng> ng>釩 V :1.75~2.20(允許偏差:±0.05)ng> ng>鉬 Mo:4.50~5.50(允許偏差:尺寸≤6,±0.05;尺寸>6,±0.10) ng> ng>鎢 W :5.50~6.75(允許偏差:尺寸≤10,±0.10;尺寸>10,±0.20)ng> ng> ng> ng>ng>W6Mo5Cr4V2硬度:ng>ng> ng>交貨硬度:(其他加工方法)≤262HB; (退火)≤255HB。試樣熱處理制度及淬回火硬度:≥63HRC(箱式爐)、≥64HRC(鹽浴爐)ng> ng> ng> ng>ng>ng>W6Mo5Cr4V2ng>熱處理:ng>ng>ng>ng> ng>熱處理規范:淬[1]?火,730~840℃預熱,1210~1230℃(鹽浴爐)或1210~1230℃(箱式爐)加熱,油冷,540~560℃回火2次,每次2h。ng> ng> ng> ng>ng>ng>ng>W6Mo5Cr4V2ng>ng>ng>交貨狀態:ng> ng>熱軋、鍛制、冷拉鋼棒以退火狀態交貨,熱軋、鍛制鋼棒以退火+其他加工方法(剝皮、輕拉、磨光或拋光等)加工後交貨。ng> ng> ng> ng> ng> |