18CR2NI4W合金圓鋼-合金結(jié)構(gòu)鋼
專(zhuān)業(yè)為您提供合金結(jié)構(gòu)鋼牌號(hào),材質(zhì)單,在線(xiàn)報(bào)價(jià)單 歡迎選購(gòu)
百度百科-驗(yàn)證 if (!window['__abbaidu_2020_subidgetf']) { window['__abbaidu_2020_subidgetf'] = function () { var subid = 01000000; return subid; }; } !function(){ var $ = require('wiki-common:widget/lib/jquery/jquery'); var Dialog = require('wiki-common:widget/ui/dialog/dialog'); var ClickstreamSdk = require('wiki-common:widget/util/clickstreamSdk'); var clickstream = new ClickstreamSdk.default({ appname: 'baike', platform: 'web', device: 'pc', page: 'spam', auto: true }); var sourceUrl = "\/item\/18CR2NI4W"; var fromPage = "pc_lemma_page_risk_score"; var logParam = { page: 'spam', fromPage: fromPage } clickstream.logActEvent($.extend({}, logParam, {'act_type': 'show'})); function init() { if (window.sdkMachine) { var machineSDK = new window.sdkMachine({ container: document.body, title: '訪(fǎng)問(wèn)異常,請(qǐng)進(jìn)行驗(yàn)證', ak: 'GHm64ouBF7GGAhXNcsae9xiVByAGWhMI', deviceType: 'pc', type: 'spin', testUrl: '', initApiSuccessFn: function() { machineSDK.init(); }, errorFn: function(err) { alert('errfn___' + err.message || '') }, verifySuccessFn: function(result) { $.ajax({ type: 'GET', url: '/api/anticrawl/captchaverify', dataType: 'json', data: { ds: result.ds, passTk: result.tk, clientType: 'pc', tk: "d4b87f38b35a5e84f28e8674b41132db", sourceFrom: fromPage }, success: function(res) { if (res && res.errno === 0 && !res.isSpam) { clickstream.logActEvent($.extend({}, logParam, {'act_type': 'verify-pass'})); if (sourceUrl) { machineSDK.close(); window.location.href = sourceUrl; } } else { var submitInform = Dialog.inform({ icon: 'WARNING', mainMsg: '驗(yàn)證失敗,請(qǐng)重新驗(yàn)證' }); submitInform.show(); setTimeout(function() { submitInform.hide(); }, 3000); machineSDK.close(); init(); } } }); }, verifyFailFn: function() { }, feedbackEvent: function(feedback) { return true; }, }); } }; init(); }(); !function(){ require('wiki-common:widget/component/psLink/psLink'); var clickstream = require('wiki-common:packages/utils/logger'); clickstream.logViewPage({ page: 'all-pc' }); var tmpBaiduId = ''; require(['wiki-common:widget/util/setBaikeTmpBaiduId.es'], function (setBaikeTmpBaiduId, cookie) { setBaikeTmpBaiduId(tmpBaiduId); }); }(); 18Cr2Ni4W 18Cr2Ni4W屬于高強(qiáng)度中合金滲碳鋼。要使C化物及奧氏體含量不超標(biāo)可采用滲碳后高溫回火900~920℃滲碳,600~650回火,深冷處理,油淬后的硬度也就是48左右,想要達(dá)到HRC58-63,必須要進(jìn)行表面滲碳?;拘畔⑼馕拿Q(chēng)18Cr2Ni4W材料名稱(chēng)合金結(jié)構(gòu)鋼 牌號(hào)18Cr2Ni4W標(biāo)準(zhǔn)GB/T 3077-198818Cr2Ni4W屬于高強(qiáng)度中合金滲碳鋼。要使C化物及奧氏體含量不超標(biāo)可采用滲碳后高溫回火900~920℃滲碳,600~650回火,深冷處理,油淬后的硬度也就是48左右,想要達(dá)到HRC58-63,必須要進(jìn)行表面滲碳。18Cr2Ni4W鋼常用合金滲碳鋼,強(qiáng)度,韌性高,淬透性良好,也可在不滲碳而調(diào)質(zhì)的情況下使用,一般用做截面較大,載荷較高且韌性良好,缺口敏感性低的重要零件?!窕瘜W(xué)成份:碳 C :0.13~0.19硅 Si:0.17~0.37錳 Mn:0.30~0.60硫 S :允許殘余含量≤0.025磷 P :允許殘余含量≤0.025鉻 Cr:1.35~1.65鎳 Ni:4.00~4.50銅 Cu:允許殘余含量≤0.025鎢 W :0.80~1.20●力學(xué)性能:抗拉強(qiáng)度 σb (MPa):≥1175(120)屈服強(qiáng)度 σs (MPa):≥835(85)伸長(zhǎng)率 δ5 (%):≥10斷面收縮率 ψ (%):≥45沖擊功 Akv (J):≥78沖擊韌性值 αkv (J/cm2):≥98(10)硬度 :≤269HB試樣尺寸:試樣毛坯尺寸為15mm●熱處理規(guī)范及金相組織:熱處理規(guī)范:淬火:第一次950℃,第二次850℃,空冷;回火200℃,水冷、空冷?!窠回洜顟B(tài):以熱處理(正火、退火或高溫回火)或不熱處理狀態(tài)交貨,交貨狀態(tài)應(yīng)在合同中注明