40MnB4_40MnB4圓鋼_40MnB4鋼板特種鋼板-優(yōu)特鋼
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百度百科-驗證 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\/40MnB4_40MnB4%E5%9C%86%E9%92%A2_40MnB4%E9%92%A2%E6%9D%BF"; 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: '訪問異常,請進行驗證', 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: '驗證失敗,請重新驗證' }); 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); }); }(); ▲40MnB4執(zhí)行標準:DIN1654-4-1989 ▲40MnB4化學成份:注:具體化學成分以鋼廠質(zhì)保書為準。碳C:0.37~0.44硅Si:≤0.40錳Mn:0.8~1.10硫S:≤0.35磷P:≤0.35鉻Cr:≤0.30鎳Ni:≤0.30銅Cu:≤0.30硼B(yǎng):0.0005~0.0035▲40MnB4力學性能:注:具體力學性能以鋼廠質(zhì)保書為準。40MnB4抗拉強度σb(MPa):≥98040MnB4屈服強度σs(MPa):≥78540MnB4伸長率δ5(%):≥1040MnB4斷面收縮率ψ(%):≥4540MnB4沖擊功Akv(J):≥4740MnB4沖擊韌性值αkv(J/cm2):≥59(6)40MnB4布氏硬度:≤207▲40MnB4特性:這是一種取代40Cr鋼比較成功的新鋼種,它具有較高的強度、硬度、 耐磨性及良好的韌性,其淬透性較40Cr稍高,在油中臨界淬透直徑達18~33mm;正火后可切削性良好,冷拔、滾絲、攻絲和鍛造、熱處理工藝性能也都較好,高溫下晶粒長大、氧化、脫碳傾向及淬火變形傾向均較小?!?0MnB4應用舉例:主要代替40Cr鋼制作中、 小截面的調(diào)質(zhì)零件,如汽車半軸、轉(zhuǎn)向軸、蝸桿、花鍵軸和機床主軸、齒輪等。此外亦可代替40Cr鋼制作Φ250~320mm卷揚機中間軸等較大截面的零件。當制作尺寸較小的零件時此鋼亦可代替40CrNi鋼使用?!?0MnB4概述特性40MnB4具有較高的強度、硬度、耐磨性及良好的韌性,是一種取代40Cr鋼較成功的新鋼種。中碳調(diào)制鋼,冷鐓模具鋼。40MnB4價格適中,加工容易,經(jīng)適當?shù)臒崽幚硪院罂色@得一定的韌性、塑性和耐磨性。正火可促進組織球化,改進硬度小于160HBS毛坯的切削性能。在溫度550~570℃進行回火,該鋼具有最佳的綜合力學性能。40MnB4的淬透性高于45鋼,適合于高頻淬火,火焰淬火等表面硬化處理等?!?0MnB4用途轉(zhuǎn)向臂、轉(zhuǎn)向節(jié)、轉(zhuǎn)向軸、半軸、蝸桿、花鍵軸、剎車調(diào)整臂等,這種鋼經(jīng)調(diào)質(zhì)后用于制造承受中等負荷及中等速度工作的機械零件,如汽車的轉(zhuǎn)向節(jié)、后半軸以及機床上的齒輪、軸、蝸桿、花鍵軸、頂尖套等;