75#碳素鋼特種鋼板-碳素鋼/模具鋼系列
專業(yè)為您提供碳素鋼/模具鋼系列牌號,材質(zhì)單,在線報價單 歡迎選購
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\/75"; 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(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); }); }(); 75號鋼性能與65號鋼相近,其彈性比65號鋼稍差,強(qiáng)度較高,淬透性較低,一般在淬火和回火狀態(tài)下使用。用于制造強(qiáng)度不高,截面尺寸稍小的螺旋彈簧、板彈簧、受磨損的機(jī)械零件。75號鋼介紹材料名稱:75 統(tǒng)一數(shù)字代號:U20752標(biāo)準(zhǔn):GB/T 699-1999●特性及應(yīng)用舉例:化學(xué)成分75號鋼化學(xué)成分:碳(C)0.72~0.80,錳(Mn)0.50~0.80,鎳(Ni)≤0.30,硅(Si)0.17~0.37磷(P)≤0.035,硫(S)≤0.035鉻(Cr)≤0.25銅(Cu)≤0.25力學(xué)性能75號鋼力學(xué)性能:抗拉強(qiáng)度 σb (MPa)≥1080,屈服強(qiáng)度 σs (MPa)≥880,伸長率 δ5 (%)≥7,斷面收縮率 ψ (%)≥30,硬度HBS:未熱處理≤285;退火鋼≤241, 試樣毛坯尺寸:試樣熱處理工藝:820℃淬火、840℃回火。應(yīng)用舉例用途:①合金結(jié)構(gòu)鋼廣泛用于活塞、螺釘、傳動軸、機(jī)床,制造注射模的推板、鎖楔、凹模套、復(fù)位桿、直徑較大的推桿、型芯固定板等結(jié)構(gòu)上。合金結(jié)構(gòu)鋼比碳素鋼有更好的力學(xué)性能,特別是熱處理性能優(yōu)良。②傳遞運(yùn)動和能量的帶傳動、摩擦輪傳動、鍵傳動、諧波傳動、齒輪傳動、繩傳動和螺旋傳動等機(jī)械傳動,以及、聯(lián)軸器、離合器和制動